FMF Minerals Gallery

Morganite, Minas Gerais, Southeast Region, Brazil Size 105 x 93 x 45 mm (Author: olelukoe)

Morganite, Minas
Size 105 x 93 x

Morganite, Peech, Konar (Kunar; Konarh; Konarha; Nuristan) Province, Afghanistan Spc. Num. - B-007 Size 140 x 50 x 72 mm (Author: olelukoe)

Morganite, Peech
Spc. Num. - B-00

Morganite, Konar (Kunar; Konarh; Konarha; Nuristan) Province, Afghanistan Size 70 x 65 x 60 mm (Author: olelukoe)

Morganite, Konar
Size 70 x 65 x

Morinite, Wavellite
Silver Coin Mine, Valmy, Iron Point District, Humboldt County, Nevada, USA
FOV = 1.9 mm (Author: Doug)

Morinite, Wavellite
Silver Coi

Moschellandsbergite H. Ungemach’s label (Author: Roger Warin)

Moschellandsbergite H. Ungemach&rs

Moschellandsbergite Landsberg (Moschellandsberg), Alsenz-Obermoschel, Palatinate, Rhineland-Palatinate, Germany 5 mm A 5 mm group of crystallized Moschellandsbergite associated with Cinnabar, from old classic locale. (Author: Simone Citon)

Moschellandsbergite Landsberg (Mos

Moschellandsbergite Mexico 7 mm exceptional crystals (Author: Roger Warin)

Moschellandsbergite Mexico 7 mm e

Moschellandsbergite Mexico rear side same specimen (Author: Roger Warin)

Moschellandsbergite Mexico rear si

Moschellandsbergite
Landsberg (Moschellandsberg), Alsenz-Obermoschel, Palatinate/Pfalz, Rhineland-Palatinate/Rheinland-Pfalz, Germany
4,0 x 6,0 x 2,5 cm (Author: MIM Museum)

Moschellandsbergite
Landsberg

Moschellandsbergite
Landsberg (Moschellandsberg), Alsenz-Obermoschel, Palatinate/Pfalz, Rhineland-Palatinate/Rheinland-Pfalz, Germany
54mm (Author: Gail)

Moschellandsbergite
Landsberg

Moschellandsbergite
Landsberg (Moschellandsberg), Alsenz-Obermoschel, Palatinate/Pfalz, Rhineland-Palatinate/Rheinland-Pfalz, Germany
7.5 x 4 x 3.5 cm / main crystal: 1.6 cm (Author: MIM Museum)

Moschellandsbergite
Landsberg

Moschellandsbergite
Landsberg (Moschellandsberg), Alsenz-Obermoschel, Palatinate/Pfalz, Rhineland-Palatinate/Rheinland-Pfalz, Germany
7.5 x 4 x 3.5 cm / main crystal: 1.6 cm (Author: MIM Museum)

Moschellandsbergite
Landsberg

Hvalfjörður, Capital Region, Iceland
(Author: Bergur_E_Sigurdarson)

Most likely Chabazite, this was on

Mostly drusy small crystals on matrix. (Author: Pierre Joubert)

Mostly drusy small crystals on mat

Mostly prehnite and friends. All Westfield, Massachusetts, USA Field of view 12"x12’x24". (Author: vic rzonca)

Mostly prehnite a
All Westfield, Ma

Motramite on and in calcite. Tsumeb, Namibia 61 x 45 x 30 mm Same as above. (Author: Pierre Joubert)

Motramite on and in calcite. Tsume

Motramite on and in calcite. Tsumeb, Namibia 61 x 45 x 30 mm Same as above. (Author: Pierre Joubert)

Motramite on and in calcite. Tsume

Motramite on and in calcite. Tsumeb, Namibia 61 x 45 x 30 mm (Author: Pierre Joubert)

Motramite on and in calcite. Tsume

Mottanaite-(Ce)
Cavalluccio Mountain, Campagnano di Roma, Metropolitan City of Rome Capital, Lazio, Italy
X c. 1 mm (Author: Volkmar Stingl)

Mottanaite-(Ce)
Cavalluccio Mo

Mottanaite-(Ce)
Cavalluccio Mountain, Campagnano di Roma, Metropolitan City of Rome Capital, Lazio, Italy
3 x 2 cm (Author: Volkmar Stingl)

Mottanaite-(Ce)
Cavalluccio Mo

Mottramite Ojuela Mine, Level 35, Mapimi, Durango, Mexico 3.8 x 5.2 cm. Dark green, botryoidal mottramite on limonitic matrix from the find in 2011. (Author: crosstimber)

Mottramite Ojuela Mine, Level 35,

Mottramite Ojuela Mine, Mapimí, Durango, Mexico. 11 cms. (Author: javmex2)

Mottramite Ojuela Mine, Mapimí, Du

Mottramite Ojuela Mine, Mapimí, Durango, Mexico 9.8 x 5.0 cm (Author: Don Lum)

Mottramite Ojuela Mine, Mapimí, Du

Mottramite Ojuela Mine, Mapimí, Durango, Mexico 9.8 x 5.0 cm (Author: Don Lum)

Mottramite Ojuela Mine, Mapimí, Du

Mottramite Tsumeb Mine, Tsumeb, Namibia 4.5 x 7.3 cm. Arborescent olive-green mottramite on flattened rhombs of colorless calcite, some of which have reddish tints due to included hematite. (Author: crosstimber)

Mottramite Tsumeb Mine, Tsumeb, Na

Mottramite Tsumeb, Namibia 3 cm (Author: Herman van Dennebroek)

Mottramite Tsumeb, Namibia 3 cm

Mottramite Tsumeb, Namibia 37 x 30 x 20 mm Same as above. (Author: Pierre Joubert)

Mottramite Tsumeb, Namibia 37 x 30

Mottramite Tsumeb, Namibia 37 x 30 x 20 mm Same as above. (Author: Pierre Joubert)

Mottramite Tsumeb, Namibia 37 x 30

Mottramite Tsumeb, Namibia 37 x 30 x 20 mm (Author: Pierre Joubert)

Mottramite Tsumeb, Namibia 37 x 30

Mottramite and Cerussite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
51mm x 32mm x 25mm (Author: Heimo Hellwig)

Mottramite and Cerussite
Tsume

Mottramite and Mimetite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
150mm x 80mm x 60mm (Author: Heimo Hellwig)

Mottramite and Mimetite
Tsumeb

Mottramite and Mimetite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
150mm x 80mm x 60mm (Author: Heimo Hellwig)

Mottramite and Mimetite
Tsumeb

Mottramite and Mimetite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
150mm x 80mm x 60mm (Author: Heimo Hellwig)

Mottramite and Mimetite
Tsumeb

Mottramite covered calcite. Tsumeb, Namibia Calcite crystal is 1 cm Just on the edges of the calcite the Mottramite is crystalised in small tree forms (Author: Herman van Dennebroek)

Mottramite covered calcite. Tsume

Mottramite on Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
21mm x 35mm x 32mm (Author: Heimo Hellwig)

Mottramite on Calcite
Tsumeb M

Mottramite on Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
54mm x 30mm x 38mm (Author: Heimo Hellwig)

Mottramite on Calcite
Tsumeb M

Mottramite on Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
54mm x 30mm x 38mm (Author: Heimo Hellwig)

Mottramite on Calcite
Tsumeb M

Mottramite on quartz matrix Level 35, América Poniente? or Lugar San Juan Poniente, Mina Ojuela, Mapimi, Durango, Mexico 9 x 8 x 8 cm Same specimen than above but trimmed a little. (Author: Jean Sendero)

Mottramite on quartz matrix Level

Mottramite ps. wulfenite
Total Wreck Mine, Cienega Creek, The Narrows, Empire District, Empire Mountains, Pima County, Arizona, USA
2.6 x 3.0 cm (Author: crosstimber)

Mottramite ps. wulfenite
Total

Mottramite stalactie Level 35? or Lugar San Juan Poniente, Mina Ojuela, Mapimi, Durango, Mexico 14 x 9 x 8 After a bit of trimming and cleaning, it should look like a beauty. Tallest stalactite is 2.5 cm in height. (Author: Jean Sendero)

Mottramite stalactie Level 35? or

Mottramite with wulfenite Level 35? or Lugar San Juan Poniente, Mina Ojuela, Mapimi, Durango, Mexico 14 x 9 x 8 Backside of the specimen photographed above. Shows two nice dipyramidal yellow wulfenites sticking out of the limonitic matrix. (Author: Jean Sendero)

Mottramite with wulfenite Level 35

Mottramite, Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
60 x 33 mm (Author: Sante Celiberti)

Mottramite, Calcite
Tsumeb Min

Mottramite, Malachite, Azurite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
70x50mm (Author: Heimo Hellwig)

Mottramite, Malachite, Azurite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibi

Mottramite, Malachite, Azurite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
70x50mm (Author: Heimo Hellwig)

Mottramite, Malachite, Azurite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibi

Mottramite, Malachite, Azurite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
70x50mm (Author: Heimo Hellwig)

Mottramite, Malachite, Azurite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibi

Mottramite, Malachite, Azurite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
70x50mm (Author: Heimo Hellwig)

Mottramite, Malachite, Azurite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibi

Mottramite, Vanadinite
Shelby Mine, White Hills, Cerbat Mountains, Gold Basin District, Mohave County, Arizona, USA
FOV = 3.2 mm (Author: Doug)

Mottramite, Vanadinite
Shelby

Mottramite, Vanadinite
Ford Mine, Tucson Wash, Mammoth, Mammoth District, Pinal County, Arizona, USA
FOV = 1.2 mm (Author: Doug)

Mottramite, Vanadinite
Ford Mi

Mottramite, Wulfenite
Ojuela Mine, Mapimí, Municipio Mapimí, Durango, Mexico
100 X 55 X 50 mm (Author: Robert Seitz)

Mottramite, Wulfenite
Ojuela M

Mottramite. Ojuela Mine, Mun de Mapimi, Durango, Mexico. FOV 20 x 20 mm (Author: nurbo)

Mottramite. Ojuela Mine, Mun de Ma

Mottramite. Ojuela Mine, Mun de Mapimi, Durango, Mexico. FOV 20 x 15 mm approx (Author: nurbo)

Mottramite. Ojuela Mine, Mun de Ma

Mottramite. Ojuela Mine, Mun de Mapimi, Durango, Mexico. 55 x 40 mm (Author: nurbo)

Mottramite. Ojuela Mine, Mun de Ma

Mottramite
Ojuela Mine, level 35, Mapimí, Municipio Mapimí, Durango, Mexico
4.4 x 6.0 cm (Author: crosstimber)

Mottramite
Ojuela Mine, level

Mottramite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
73mm x 105mm x 92mm (Author: Heimo Hellwig)

Mottramite
Tsumeb Mine, Tsumeb

Mottramite
Ford Mine, Tucson Wash, Mammoth, Mammoth District, Pinal County, Arizona, USA
FOV = 3.4 mm (Author: Doug)

Mottramite
Ford Mine, Tucson W

Mottramite
Last Chance Mine, Washougal River, Washougal District, Skamania County, Washington, USA
FOV = 1.3 mm (Author: Doug)

Mottramite
Last Chance Mine, W

Motukoreaite
Stradner Kogel, Wilhelmsdorf, Gleichenberger, Bad Gleichenberg, Südoststeiermark, Styria/Steiermark, Austria
2,5 x 1,2 cm (Author: Volkmar Stingl)

Motukoreaite
Stradner Kogel, W

Motukoreaite
Stradner Kogel, Wilhelmsdorf, Gleichenberger, Bad Gleichenberg, Südoststeiermark, Styria/Steiermark, Austria
2,5 x 1,2 cm (Author: Volkmar Stingl)

Motukoreaite
Stradner Kogel, W

Moved mostly by hand. It can be fussy business. (Author: vic rzonca)

Moved mostly by hand. It can be fu

Moved mostly by hand. We do have mechanical advantage. (Author: vic rzonca)

Moved mostly by hand. We do have m

moving along... (Author: Gail)

moving along...

Mr Gauche. His son currently has the mining rights on Blesberg and Swartberg mines. (Author: Pierre Joubert)

Mr Gauche. His son currently has

Mrazekite
Senhora da Assunção Mine, Aldeia Nova, Ferreira de Aves, Sátão, Viseu District, Portugal
FOV 1.5 mm (Author: Cesar M. Salvan)

Mrazekite
Senhora da Assunçã

MUCKING, LOADING AND CRUSHING OF BLASTED ORE The mining process at Milpillas began with the cut-and-fill mining method, ideal for steeply dipping ore bodies. After drilling and blasting, fragmented Copper ore within the underground stopes was scooped up using Load-Haul-Dump (LHD) vehicles, as seen in Photo A. These vehicles efficiently scooped up the broken ore, or “muck,” from the stope floor. These highly maneuverable LHDs transported the muck over short distances to designated ore passes. These vertical or inclined shafts utilized gravity to move the ore to lower levels of the mine. From there, the muck was transferred to underground crushers for initial size reduction, as seen in Photo B. Crushing was a fundamental initial processing stage. Large run-of-mine ore, some exceeding a meter in size, first underwent primary crushing in powerful gyratory crushers (Photo C), reducing the ore to a manageable size, typically a few centimeters. Subsequently, secondary and sometimes tertiary crushing stages further decreased the particle size. This meticulous size reduction was crucial for liberating valuable Copper minerals from waste rock and preparing the ore for subsequent grinding and leaching processes, maximizing extraction efficiency. At Milpillas, the mine utilized a Metso Superior MKIII gyratory crusher (Photo C) as its primary crushing unit. During its lifetime, the crusher underwent several optimization phases to increase the lifespan of wear-prone components, dramatically reducing maintenance downtime from six months to two years. This enhancement led to lower production costs and improved personnel safety. It is interesting to note that the “ball” of the “gyrator” as seen in Photo C was nearly 1.5 meters in diameter, so the whole crusher unit was huge! After crushing, the ore was transferred onto conveyor belts (Photo D), which transported it to the surface via a hoist shaft, where it then entered the leaching process. As each horizontal slice of ore was mucked out, the void created was immediately backfilled with a cemented waste material. This backfilling provided vital ground support and created a stable working platform for the subsequent mining cycle of the next slice above, thereby ensuring a continuous and safe mining environment. Original photos courtesy of Enrique Jimenez (Author: silvia)

MUCKING, LOADING AND CRUSHING OF B

Mullite
Caspar Quarry, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate/Rheinland-Pfalz, Germany
FOV appr. 4 mm (Author: Rob Schnerr)

Mullite
Caspar Quarry, Bellerb

Multiple specimens (Author: Kharv)

Multiple specimens

Murdochite and Ferrinatrite
La Compañía Mine, Caracoles, Sierra Gorda District, Tocopilla Province, Antofagasta Region, Chile
fov 0.60 mm (Author: ploum)

Murdochite and Ferrinatrite
La

Murdochite on Quartz
La Compañía Mine, Caracoles, Sierra Gorda District, Tocopilla Province, Antofagasta Region, Chile
fov 0.60 mm (Author: ploum)

Murdochite on Quartz
La Compa�

Murdochite, Mimetite
Quo Vadis Mine, Henderson, Alunite District, Clark County, Nevada, USA
FOV = 1.2 mm (Author: Doug)

Murdochite, Mimetite
Quo Vadis

Murmanite Peninsula Kola, (probably the Lovozero Massif), Russia FoV= 4 x 3 cm; crystal: 1,5 x 0,5 cm MURMAINTE is a titanium and niobium containing sorosilicate, closely related in composition and structure with Epistolite and Vuonnemite, both of which are already pictured above in the this string. On fresh surfaces the he color is more pinkish than here. I would like to highlight the lustre of this mineral, subtle and difficult to describe, mindat calls it “greasy, pearly” other sources use the wording “silverlike”. Altogether this is a good reminder of the diversity of lustres in the mineral kingdom that we should experience directly and not only through the limited expressions for lustre in language. As for the genesis, Murmanite belongs to a category of minerals that are not crystallized from melts or solutions, but form exclusively by transformation of other phases. (Khomyakov library(.)iem(.)ac(.)ru(/)exper(/)v10_1(/)49(.)pdf) (Author: kakov)

Murmanite Peninsula Kola, (probabl

Murray Mine Stibnite with "sugarcube" Barite personally collected by Casey Jones (large cabinet). Size: 20.5 cm (Author: GneissWare)

Murray Mine Stibnite with "su

Musca domestica (not a mineral) fov 0.62 mm (Author: ploum)

Musca domestica (not a mineral)

Musca domestica (not a mineral) fov 1.72 mm (Author: ploum)

Musca domestica (not a mineral)

Muscovite Aldea Velho Mine, Conselheiro Pena, Minas Gerais, Brazil 9.3 x 12.6 cm. Intergrown silvery pseudo-hexagonal muscovite crystals with gemmy pinkish areas. Dark green hexagonal prisms of fluorapatite to 0.6 cm are scattered about on the surfaces of the muscovite. (Author: crosstimber)

Muscovite Aldea Velho Mine, Consel

Muscovite Branchville Quarry, Branchville, Fairfield Co., Connecticut, USA 5.0 x 7.1 cm Lamellar, rounded muscovite in a quartz and albite matrix. This form of muscovite is sometimes known as "ball peen mica" for obvious reasons. (Author: crosstimber)

Muscovite Branchville Quarry, Bran

Muscovite Khargulook, near Sabsar, Skardu District, Gilgit-Baltistan, Pakistan 8.1 x 9.2 cm. Fan-shaped group of silvery muscovite crystals to 5.0 cm on edge with platy white cleavelandite crystals. (Author: crosstimber)

Muscovite Khargulook, near Sabsar,

Muscovite Linopolis, Minas Gerais, Brazil 9.0 x 9.5 cm. Intergrown books of golden-yellow muscovite crystals to 2 cm. (Author: crosstimber)

Muscovite Linopolis, Minas Gerais,

Muscovite Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada FOV=4mm (Author: Doug)

Muscovite Poudrette quarry (Demix

Muscovite Rodinha Mine, Itinga, Minas Gerais, Brazil 5.0 x 8.6 cm. Golden yellow crystals of “star muscovite” covering a matrix of white albite. Collected in 2012. (Author: crosstimber)

Muscovite Rodinha Mine, Itinga, Mi

Muscovite Ze Pinto prospect, Conselheiro Pena, Minas Gerais, Brazil 5.3 x 6.3 cm. Intergrown rosettes of sharp silvery pseudohexagonal muscovite crystals. This locality and the Aldea Velho Mine may be the same place, or very close by. (Author: crosstimber)

Muscovite Ze Pinto prospect, Conse

Muscovite #1.jpg (Author: Bruce Sevier)

Muscovite #1.jpg

Muscovite #1A.jpg (Author: Bruce Sevier)

Muscovite #1A.jpg

Muscovite #1B.jpg (Author: Bruce Sevier)

Muscovite #1B.jpg

Muscovite #1C.jpg (Author: Bruce Sevier)

Muscovite #1C.jpg

Muscovite #1D.jpg (Author: Bruce Sevier)

Muscovite #1D.jpg

Muscovite #1E.jpg (Author: Bruce Sevier)

Muscovite #1E.jpg

Muscovite #1F.jpg (Author: Bruce Sevier)

Muscovite #1F.jpg

Muscovite #1G.jpg (Author: Bruce Sevier)

Muscovite #1G.jpg

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, Colombia
55x32x11mm (Author: Fiebre Verde)

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, C

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, Colombia
55x32x11mm (Author: Fiebre Verde)

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, C

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, Colombia
55x32x11mm (Author: Fiebre Verde)

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, C

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, Colombia
55x32x11mm (Author: Fiebre Verde)

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, C

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, Colombia
55x32x11mm (Author: Fiebre Verde)

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, C

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, Colombia
55x32x11mm (Author: Fiebre Verde)

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, C

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, Colombia
55x32x11mm (Author: Fiebre Verde)

Muscovite (variety fuchsite), Pyrite
Highway Pauna-San Pablo de Borbur road works ("Highway Mine"), Municipio Pauna, Western Emerald Belt, Boyacá Department, C

Muscovite - Quartz
Switzerland
60 mm x 40 mm x 30 mm (Author: Dany Mabillard)

Muscovite - Quartz
Switzerland

Muscovite after Andalusite (variety pinite)
Lüsens Valley, Sellrain Valley/Sellraintal, Innsbruck-Land District, North Tyrol, Tyrol/Tirol, Austria
8,5 x 7,5 cm (Author: Volkmar Stingl)

Muscovite after Andalusite (variety pinite)
Lüsens Valley, Sellrain Valley/Sellraintal, Innsbruck-Land District, North Tyrol, Tyrol/

Muscovite after Tourmaline
Sapo Mine, Ferruginha, Conselheiro Pena, Vale do Rio Doce, Minas Gerais, Brazil
82 mm x 37 mm x 35 mm (Author: Don Lum)

Muscovite after Tourmaline
Sap

Muscovite and Albite
Minas Gerais, Brazil
18 x 10 x 34 cm / main crystal: 12.5 cm (Author: MIM Museum)

Muscovite and Albite
Minas Ger

Muscovite and Quartz
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
16 cm x 14 cm x 8 cm (Author: silvia)

Muscovite and Quartz
Minas da

Muscovite book specimen 12 cm in length, 2 cm thick. Woodlawn Quarry, Wilmington, Delaware, USA Another self-collected specimen from the Woodlawn Quarry, Wilmington, DE. This is a typical glinting pegmatite from this site composed of muscovite, white plagioclase, and quartz. Occasionally these pegmatites feature almandine as an accessory mineral. (Author: Jordi Fabre)

Muscovite book sp
Woodlawn Quarry,

Muscovite book specimen 1 (other side) (Author: Turbo)

Muscovite book specimen 1 (other s

Muscovite book specimen 1: 12 cm in length, 2 cm thick, Wilmington, DE (Author: Turbo)

Muscovite book specimen 1: 12 cm

Muscovite book specimen 2: 11 cm in length, 1 cm thick, Wilmington, DE (Author: Turbo)

Muscovite book specimen 2: 11 cm i

Muscovite ps. after tourmaline Sapo Mine, Conselheiro Pena, Minas Gerais, Brazil 5.3 x 6.6 cm. Intergrown books of silvery muscovite crystals replacing a tourmaline crystal. The trigonal tourmaline x-section is distinctly visible when viewed from the top. Collected in 2010. (Author: crosstimber)

Muscovite ps. after tourmaline Sap

Muscovite, Albite (variety pericline)
Floitengrund, Ziller Valley (Zillertal), North Tyrol, Tyrol/Tirol, Austria
3 x 2,5 cm (Author: Volkmar Stingl)

Muscovite, Albite (variety pericline)
Floitengrund, Ziller Valley (Zillertal), North Tyrol, Tyrol/Tirol,

Muscovite, Aquamarine
Chumar Bakhoor, Hunza Valley, Nagar District, Gilgit-Baltistan (Northern Areas), Pakistan
Specimen size 13 cm, beryl crystal 2,5 x 3 cm, lar (Author: Tobi)

Muscovite, Aquamarine
Chumar B

Muscovite, Quartz, Chlorite
Beura Quarries, Beura-Cardezza, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
121 x 72 mm (Author: Sante Celiberti)

Muscovite, Quartz, Chlorite
Be

Muscovite, Quartz, Chlorite
Beura Quarries, Beura-Cardezza, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
121 x 72 mm (Author: Sante Celiberti)

Muscovite, Quartz, Chlorite
Be

Muscovite, Quartz
Keystone, Keystone District, Pennington County, South Dakota, USA
64 mm x 61 mm x 54 mm (Author: Don Lum)

Muscovite, Quartz
Keystone, Ke

Muscovite, Siderite, Arsenopyrite, Marcasite 7.3 × 6.9 × 3.8 cm (Author: Michael Shaw)

Muscovite, Siderite, Arsenopyrite, Marcasite

Muscovite/Cassiterite combo, Mt Xuebaoding, China. (Author: Samuel)

Muscovite/Cassiterite combo, Mt Xu

Muscovite: Teofilo Otoni, Minas Gerais, Brazil (2 1/4" x 2" x 1 1/2") (Author: Bruce Sevier)

Muscovite: Teo

Muscovite
Mas Sever Quarry, Massabè (Mas Ceber), Sils, Comarca La Selva, Gerona / Girona, Catalonia / Catalunya, Spain
5 cm width. (Author: Joan R.)

Muscovite
Mas Sever Quarry, Ma

Muscovite
Sabsar, Indus Valley, Baltistan District, Gilgit-Baltistan (Northern Areas), Pakistan
8.0 x 9.0 cm (Author: crosstimber)

Muscovite
Sabsar, Indus Valley

Muscovite
Nello Teer Crabtree Creek Quarry, Raleigh, Wake County, North Carolina, USA
5.0 x 8.2 cm (Author: crosstimber)

Muscovite
Nello Teer Crabtree

Muscovite
Fillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA
4.0 x 6.0 cm (Author: crosstimber)

Muscovite
Fillow Quarry, Branc

Muscovite
Hiddenite, Alexander County, North Carolina, USA
1.9 x 2.0 cm (Author: crosstimber)

Muscovite
Hiddenite, Alexander

Muscovite
Floitengrund, Ziller Valley (Zillertal), North Tyrol, Tyrol/Tirol, Austria
4,5 x 4,5 cm (Author: Volkmar Stingl)

Muscovite
Floitengrund, Ziller

Muscovite
Mamona pegmatite, Araçuaí, Vale do Jequitinhonha, Minas Gerais, Brazil
9.5 x 8 x 11 cm / main crystal: 9.5 cm (Author: MIM Museum)

Muscovite
Mamona pegmatite, Ar

Muscovite
Reynolds Mine, Springfield, Sullivan County, New Hampshire, USA
2.4 x 5.5 x 7.9 cm (Author: Michael Shaw)

Muscovite
Reynolds Mine, Sprin

Mushistonite on Kesterite on Cassiterite
Mount Xuebaoding, Pingwu, Mianyang Prefecture, Sichuan Province, China
73 x 50 x 40 mm (Author: GneissWare)

Mushistonite on Kesterite on Cassiterite
Mount Xuebaoding, Pingwu, Mianyang Prefecture, Sichuan Prov

Mushroom in a garden mason.JPG (Author: h.abbasi)

Mushroom in a garden mason.JPG

Muzo mining district, Western Emerald Belt, Boyacá Department, Colombia
(Author: Fiebre Verde)

Muzo.JPG

My 8 cm Navidad Creedite - been looking for one for awhile and this stood out - bought at the 2011 Deming, NM show. (Author: Darren)

My 8 cm Navidad Creedite - been lo

My beloved little car in the distance. (Author: Pierre Joubert)

My beloved little car in the dista

My best find at this location was this crystal. Joe was there when I uncovered the fissure containing it. It was quickly apparent that something good was going to come out of this fissure when while extracting the quartz it suddenly became glassy. It was as if the quartz exploded into crystals in a zone within the fissure. The sunlight now directly overhead reflected shiny faces on the nearly black quartz as it lay half buried in the ground. I saw one edge of the crystal above and knew immediately it was going to be killer. After quickly brushing the dirt off and holding it up in the sun Joe and I stared in awe. "Damn!", Joe exclaimed. This was a huge burst of motivation for us. Exhausted and drenched in sweat in the burning sun we suddenly found a second wind knowing that the surrounding area must contain more goodies. Joe exemplified this by promptly finding another fissure six feet away in which he extracted two or three nice crystals and some facet grade smoky quartz material. (Author: Scott LaBorde)

My best find at this location was

My best pocket, the one on the right, and the crystals found in it. (Author: John S. White)

My best pocket, the one on the rig

My camp site next to a small stream. (Author: Pierre Joubert)

My camp site next to a small strea

My camp site. (Author: Pierre Joubert)

My camp site.

My candidate for the finest gypsum crystal to come out of Naica. This sits in an exhibit case in the mine office and is flawless (Author: Peter Megaw)

My candidate for the finest gypsum

My chum for scale. (Author: vic rzonca)

My chum for scale.

My chum stands on the sandstone level that marks the bottom of the crystal bearing strata. The bathtub is thirty feet up from here. (Author: vic rzonca)

My chum stands on the sandstone le

My favorite chinese cinnabar 4,5cm (Author: parfaitelumiere)

My favorite chinese cinnabar 4,5cm

My favorite minaret quartz (Author: John S. White)

My favorite minaret quartz

My Favourite crystal a Petalite (not phenakite) from Mogok, measures 20 x 4mm (Author: nurbo)

My Favourite crystal a Petalite (n

My final resting place before the last stretch; a steep descent. (Author: Pierre Joubert)

My final resting place before the

My first amethyst Unknown 3,5 x 3 cm. (Author: Anísio Cláudio)

My first amethyst
Unknown

My first Fluorite. This octahedral Fluorite comes from Zarembo Island, which is near Wrangel, in Southeast Alaska. I had to go there one day, in 1980, to fix a broken helicopter and our customer, a geologist, gave me this piece. The crystals are very pale light green, practically colorless on drusy Quartz, and average 1/4" (6mm) the specimen is about 4" x 2 1/2" x 1 1/4" (10.1cm x 6.4cm x 3.2cm) (Author: Jim Prentiss)

My first Fluorite. This octahedral

My first Malachite. I have to agree with Jordi on the sacredness of leaving a mineral in its natural form. This is not what I had ordered, the dealer was helping. Still it has the habit I am most enamored with, and kids think its pretty. It is 5" x 3 1/2 x 2" (12.7cm x 8.9cm x 5.1cm) (Author: Jim Prentiss)

My first Malachite. I have to agre

My little Red Cloud Mine toenail wulfenite. Like the one below, just came back to me in a trade with the guy I had sold it to, was glad to get it for $3 a few years ago!!! And am happy to have it back! (Author: Darren)

My little Red Cloud Mine toenail w

My love for dogs in one picture: Me playing with some of the puppies from my parents’ last litter in 2017 (Author: Tobi)

My love for dogs in one picture: M

My mat cutter and workspace, the trusty ole kitchen counter. (Author: Gail)

My mat cutter and workspace, the t

My small 4 cm Cavansite, bought from David Garske a few months ago. (Author: Darren)

My small 4 cm Cavansite, bought fr

My very primitive, yet effective ’home studio’. (Author: Pierre Joubert)

My very primitive, yet effective &

My whole back porch full of crystal and crystals plates..mostly smokey’s but some will be ammy’s and a few of the larger plates tend to have a light purple color in some of them (Author: Jason)

My whole back porch full of crysta

Myargyrite San Genaro Mine, Castrovirreyna District, Castrovirreyna Province, Huancavelica Department, Peru 3,5x3x1,5 cm Well crystallized, gray metallic Myargyrite, associated with reddish Pyrargyrite, from a classic peruan Silver mine. (Author: Simone Citon)

Myargyrite San Genaro Mine, Castro

Mylonitized Calcite and Willemite Franklin, New Jersey, USA 6x3 cm (Author: LennyL)

Mylonitized Calcite and Willemite

Myself and Colin set off to climb Aiguille du Moine. The climbing is steep and airy, but relatively easy. Colin was refreshed by his luxurious night’s sleep in the hut and was way out in front - you can see him working his way leftwards along some sloping ledges. Actually I think at that point he waited for me ’cos a rope was required... (Author: Mike Wood)

Myself and Colin set off to climb

N’Chwaning Rhodochrosite (Author: Gail)

N’Chwaning Rhodochrosite

N/A (Author: Forrestblyth)

N/A

NA 10cm (Author: Forrestblyth)

NA

NA (Author: Forrestblyth)

NA

NA (Author: Forrestblyth)

NA

NA (Author: Forrestblyth)

NA

NA (Author: Forrestblyth)

NA

NA
Northumberland, England / United Kingdom
(Author: Forrestblyth)

NA
Northumberland, England / U

Nadorite Langban, Värmland, Sweden fov 2.5 mm (Author: Rewitzer Christian)

Nadorite
Langban, Värmland

Nagyagite Sacarîmb ( Nagyág), Deva, Hunedoara Co., Romania Up to 1 cm crystal cluster Very rare "rose" of Nagyagite, associated with Rhodochrosite and Quartz, from old collection. (Author: Simone Citon)

Nagyagite Sacarîmb ( Nagyág), Deva

Nagyagite Sacarîmb (Nagyág), Deva, Hunedoara Co., Romania 6x5x3 cm Large sheets of Nagyagite in Rhodochrosite matrix, from old collection. (Author: Simone Citon)

Nagyagite Sacarîmb (Nagyág), Deva,

Nagyagite with Quartz
Sacarîmb (Nagyág), Deva, Hunedoara, Romania
12,0 x 7,5 x 3,5 cm (Author: MIM Museum)

Nagyagite with Quartz
Sacarîm

Nagyagite, Rhodochrosite Sacarîmb (ex Nagyág), Deva, Hunedoara Co., Romania 7x6x4 cm Exclusive, very rare and uncommon sample, with many complete, large (up to 2 cm ) Nagyagite crystals preserved by the encrusting Rhodochrosite and Quartz. Usually large crystals of Nagyagite are broken, because it is very tender and fragile. From very old collection (late 1700-first 1800). (Author: Simone Citon)

Nagyagite, Rhodochrosite Sacarîmb

Nagyagite
Sacarîmb (Nagyág), Deva, Hunedoara, Romania
10,0 x 5,5 x 3,0 cm (Author: MIM Museum)

Nagyagite
Sacarîmb (Nagyág),

Naica Anidrite Chihuahua Mexico. size 11cm (Author: javmex2)

Naica Anidrite Chihuahua Mexico. s

Naica Chihuahua Mexico. anidrithe, calcite. (Author: javmex2)

Naica Chihuahua M
anidrithe, calcit

Naica Chihuahua Mexico. This piece is a group of calcite of 7.5 cm with spinel twinned fluorite crystals of 1cm some smaller and others larger, the largest measuring 1.5cm Year:2007 (Author: javmex2)

Naica Chihuahua M
This piece is a g

Naica fluorite.jpg (Author: Tracy)

Naica fluorite.jpg

Naica Mine, Naica, Municipio Saucillo, Chihuahua, Mexico
15 cm (Author: Peter Megaw)

Naica Mining Company Prospectus

Naica octahedron 10 cm on an axis (Author: Peter Megaw)

Naica octahedron 10 cm on an axis

Naica spinel twinned fluorite...with large enhydro. 8 cm across (Author: Peter Megaw)

Naica spinel twinned fluorite...wi

Naica trap mod.jpg (Author: Peter Megaw)

Naica trap mod.jpg

naicfluo_angle90.jpg (Author: Tobi)

naicfluo_angle90.jpg

Nakauriite
Lobminggraben, St Stefan ob Leoben, Leoben, Styria/Steiermark, Austria
2,5 x 1,5 cm (Author: Volkmar Stingl)

Nakauriite
Lobminggraben, St S

Nambulite, Gypsum Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia 1.0 x 1.0 x 0.7 cm ex Chris Stefano Partial tabular pink-red translucent crystal of nambulite on gypsum. (Author: Don Lum)

Nambulite, Gypsum Kombat Mine, Kom

Nambulite, Gypsum Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia 1.0 x 1.0 x 0.7 cm ex Chris Stefano Partial tabular pink-red translucent crystal of nambulite on gypsum. (Author: Don Lum)

Nambulite, Gypsum Kombat Mine, Kom

Nambulite, Gypsum Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia 1.0 x 1.0 x 0.7 cm ex Chris Stefano Partial tabular pink-red translucent crystal of nambulite on gypsum. (Author: Don Lum)

Nambulite, Gypsum Kombat Mine, Kom

Nambulite
Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia
57mm x 34mm x 24mm (Author: Don Lum)

Nambulite
Kombat Mine, Kombat,

Nambulite
Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia
57mm x 34mm x 24mm (Author: Don Lum)

Nambulite
Kombat Mine, Kombat,

Nambulite
Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia
57mm x 34mm x 24mm (Author: Don Lum)

Nambulite
Kombat Mine, Kombat,

Nambulite
Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia
57mm x 34mm x 24mm (Author: Don Lum)

Nambulite
Kombat Mine, Kombat,

Nambulite
Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia
57mm x 34mm x 24mm (Author: Don Lum)

Nambulite
Kombat Mine, Kombat,

Nambulite
Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia
57mm x 34mm x 24mm (Author: Don Lum)

Nambulite
Kombat Mine, Kombat,

Nambulite
Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia
57 mm x 34 mm x 24 mm (Author: Don Lum)

Nambulite
Kombat Mine, Kombat,

Namibia.jpg (Author: Tobi)

Namibia.jpg

Namibia.JPG (Author: Tobi)

Namibia.JPG

Narsarsukite Island of Igdlutalik, Narsaq, South Greenland FoV: 2,5 x 2 cm GENERAL info about the mineral: * Narsarsukite is a titanium containing chain silicate known currently from around 20 alkaline localities worldwide. * General formula is Na2(Ti,Fe)Si4O11 - may contain F and OH * Tetragonal crystal forms, mostly plates * NOTE: Neptunite has almost identical formula but different crystal structure; it has monoclinic crystals. * The type locality is Narsarsuk (xxx complex) from where the mineral was described by the Swedish mineralogist Flink in 19O1. My previous photo of Narsarsukite from Ilímaussaq show a more typical aspect of the mineral, i.e. yellow plates. The following is information about the PARTICULAR Igdlutalik Narsarsukite on this photo (source in the end): The SITE : * Igdlutalik is NOT inside, rather 12 km west of the Ilimaussaq complex. (and 45 km west of the type locality Narsarsuk) * Narsarsukite occurs at the island within a dyke of peralkaline trachyte. * The dyke was found during the 1 : 2o ooo reconnaissance mapping of the Julianehaab area by the Greenland Geological Survey. * It is some 20 m wide and the outcrop can be traced not more than 50 m along the length of the dyke. The CRYSTALS of Igdlutalik Narsarsukite: * Short prisms (around twice as long as they are broad) unlike most narsarsukite from other locations that have tabular habits. * Forms {1oo} and {oo1} are dominant * The unique GREEN color here is probably due to aegirine inclusions. (the mineral itself is normally yellow) COMPOSITION - particularities: * The Igdlutalik narsarsukite has a distinctly high Ti/Fe ratio compared with those from Ilimaussaq and Narssarssuk; in this respect it most closely resembles the Sweet Grass, Montana narsarsukites (Stewart, 1959). * Niobium is a significant minor component FORMATION: * All known occurrences of narsarsukite are in silica-oversaturated environments in close association with alkaline intrusive rocks that have crystallized at relative low pressures. * Stewart (1959) pointed out that the requisite conditions for narsarsukite growth may be obtained where emanations from alkaline magmas react with siliceous wallrocks. * Growth of narsarsukite, according to Stewart (I959), requires an excess of silica, high partial pressure of oxygen, and all abundance of Ti and Na. Stewart considered that at lower oxygen pressure neptunite, Na2FeTiSi4O12, would be generated. However, Rajasekaran (I966) demonstrated the apparently stable coexistence of narsarsukite and neptunite at St. Hilalre, Quebec. SOURCE OF INFORMATION - most of the above is directly extracted from: UPTON et. al. : Narsarsukite - a new occurrence in peralkaline trachyte, south Greenland Mineralogical Magazine, Sept 1976, Vol. 40 PP. 737-46 www.minersoc.org/pages/Archive-MM/Volume_40/40-315-737.pdf‎ (giving all the references I have left in the above extracts) on Mindat: * Igdlutalik, the locality : http://www.mindat.org/loc-23311.html (by the way it is the type locality for Emeleusite) * Narsarsukite crystals from the same dyke http://www.mindat.org/locentry-156911.html (Author: kakov)

Narsarsukite Island of Igdlutalik,

Narsarsukite Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada FOV=5mm (Author: Doug)

Narsarsukite Poudrette quarry (Dem

Narsarsukite, Manganoan Pectolite (black) Kangerdluarsuk, Ilímaussaq Intrusive Complex, Narsaq, Greenland FoV: 2,5 x 2 cm GENERAL about the mineral: * Narsarsukite is a titanium containing chain silicate known currently from around 20 alkaline localities worldwide. * General formula is Na2(Ti,Fe)Si4O11 - may contain F and OH * Tetragonal, seen mostly as tabular crystals, parallel to {oo1}. * NOTE: Neptunite has almost identical formula but different crystal structure; it has monoclinic crystals. * usually the color is YELLOW * The type locality is the Narsarsuk pegmatite from where the mineral was described by the Swedish mineralogist Flink in 19O1. Ilímaussaq Narsarsukite: * First described from the Ilímaussaq complex by the Russian mineralogist Semenov in 1969 * Occurs in a quartz-bearing contact zone between naujaite and alkaline granite * This environment is in accordance with: * "Requisite conditions for narsarsukite growth may be obtained where emanations from alkaline magmas react with siliceous wallrocks" (Stewart (1959), quoted in UPTON et. al. 1977) * The piece on this photo is from Kangerdluarsuk; where we are near the southern border of the Complex. Turkestanite: There are brown prisms (not very much darker than the narsarsukite) in the piece that is turkestanite (pointed out by a trustworthy source who had the piece in his hands). Not very well visible on this view, but there is the squared cross section of a crystal approx in the middle, above the left corner of the long narsarsukite plate. Other day I will try take and load close ups where it is better seen. * "Ilimaussaq turkestanite forms up to a few millimeter large, brown or brownish-orange, idiomorphic, simple prismatic crystals; associated minerals are microcline, albite, augite, aegirine, quartz eudialyte and narsarsukite." (PETERSEN et.al 1999) refs: * STEWART 1959. Narsarsukite from Sage Creek, Sweet Grass Hills, Montana. Amer. Min. 44, 265-73. (as quoted in: UPTON et. al. : Narsarsukite - a new occurrence in peralkaline trachyte, south Greenland - Mineralogical Magazine, Sept 1976, Vol. 40 PP. 737-46 www.minersoc.org/pages/Archive-MM/Volume_40/40-315-737.pdf‎) * PETERSEN et.al: Turkestanite from the Ilímaussaq alkaline complex, South Greenland Neues Jarhrbuch für Mineralogie - Monatshefte, issue: 9, 1999, pp: 424 - 432 (I did not manage to get the entire article, above sentence is quoted from the abstract) (Author: kakov)

Narsarsukite, Manganoan Pectolite

Narsarsukite
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
5 x 3.5 x 4.5 cm / main crystal: 2.2 cm (Author: MIM Museum)

Narsarsukite
Poudrette Quarry,

Natanite and rhodochrisite Main Silicate Orebody, Potosi Mine, Santa Eulalia, Chihuahua, Mexico FOV 1 cm Cluster of 2 mm yellow-orange natanite crystals with rhodochrosite (Author: Peter Megaw)

Natanite and rhodochrisite Main Si

Native Bismuth Keeley-Frontier Mine, Silver Centre, Ontario, Canada 16.5x12x1.5 cm A cut and polished slab of gabbro showing native bismuth filling joint fractures. (Author: Joseph D'Oliveira)

Native Bismuth
Keeley-Frontier M

Native Copper (dodecahedral and wire copper)
Osceola Mine, Osceola, Houghton County, Michigan, USA
97 mm x 52 mm (Author: Don Lum)

Native Copper (dodecahedral and wire copper)
Osceola Mine, Osceola, Houghton County

Native Copper (Spinel Twin, Cubic Crystals)
Phoenix Mine, Phoenix, Keweenaw County, Michigan, USA
22 mm x 18 mm (Author: Don Lum)

Native Copper (Spinel Twin, Cubic Crystals)
Phoenix Mine, Phoenix, Keweenaw County,

Native Copper (variety spinel twin)
Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Australia
43 mm x 27 mm x 12 mm (Author: Don Lum)

Native Copper (variety spinel twin)
Rocklands Mine, Cloncurry, Cloncurry Shire, Queensland, Aus

Native Copper Crystals Copper Creek Mine, Batchawana Bay, Sault Ste Marie, Ontario, Canada 7x5x3.5 cm (Author: Joseph D'Oliveira)

Native Copper Cry
Copper Creek Mine

Native Copper with Cuprite. Red Dome Mine, Chillagoe, Herberton District, Queensland, Australia. 10 x 8 x 6 cm. (Author: Samuel)

Native Copper with Cuprite. Red Do

Native Copper, Burra Burra Mine, Burra, Mt Lofty Ranges, South Australia, Australia.9 x 7 x 6 cm (Author: Samuel)

Native Copper, Burra Burra Mine, B

Native Copper, Red Dome Mine, Chillagoe, Herberton District, Queensland, Australia. 10 x 5 x 2 cm. (Author: Samuel)

Native Copper, Red Dome Mine, Chil

Native Copper. Red Dome Mine, Chillagoe, Herberton District, Queensland, Australia. 6 x 4 x 4 cm. (Author: Samuel)

Native Copper. Red Dome Mine, Chil

Native Copper. Red Dome Mine, Chillagoe, Herberton District, Queensland, Australia. 6 x 4 x 4 cm. (Author: Samuel)

Native Copper. Red Dome Mine, Chil

Native Copper
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico
10 cm x 5 cm x 2 cm (Author: silvia)

Native Copper
Milpillas Mine,

Native Copper
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora, Mexico
10 cm x 5 cm x 2 cm (Author: silvia)

Native Copper
Milpillas Mine,

Native Copper
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona, USA
32 mm x 20 mm (Author: Don Lum)

Native Copper
Ray Mines, Scott

Native Copper
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona, USA
71 mm x 17 mm (Author: Don Lum)

Native Copper
Ray Mines, Scott

Native Copper
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
56 mm x 12 mm (Author: Don Lum)

Native Copper
White Pine Mine,

Native Gold, Sphalerite, Quartz
Timmins Mine, Township, Timmins area, Cochrane District, Ontario, Canada
26 mm x 15 mm x 15 mm (Author: Don Lum)

Native Gold, Sphalerite, Quartz
Timmins Mine, Township, Timmins area, Cochrane District, Ontario, Cana

Native Gold
Mockingbird Mine, Colorado area, Whitlock District, Mother Lode Belt, Mariposa County, California, USA
30 mm x 21 mm (Author: Don Lum)

Native Gold
Mockingbird Mine,

Native Gold
Santa Elena de Uairén, Gran Sabana, Bolívar State, Venezuela
23 mm x 13 mm (Author: Don Lum)

Native Gold
Santa Elena de Uai

Native Gold
Santa Elena de Uairén, Gran Sabana, Bolívar State, Venezuela
18 mm x 11 mm (Author: Don Lum)

Native Gold
Santa Elena de Uai

Native Gold
Placer County, California, USA
22 mm x 20 mm x 15 mm (Author: Don Lum)

Native Gold
Placer County, Cal

Native Gold
Tiglit, Assa-Zag Province, Guelmim-Oued Noun Region, Morocco
9 mm x 5.5 mm (Author: Don Lum)

Native Gold
Tiglit, Assa-Zag P

Native lead as flat balls with minor blue caledonite in quartz from Churfürst Ernst mine, Bönkhausen, Sauerland, Westphalia. Picture width 5 mm. (Author: Andreas Gerstenberg)

Native lead as flat balls with min

Native Leaf Silver Langis Mine, New Liskeard, Ontario, Canada 10x2x.3 cm Nice slender leaf of native silver weighing 84 grms. (Author: Joseph D'Oliveira)

Native Leaf Silve
Langis Mine, New

Native platinum is quite rare in Germany. The picture shows a 1,8 mm nugget from Kolbersbach, Drachselsried, Bavaria. (Author: Andreas Gerstenberg)

Native platinum is quite rare in G

Native silver Huantajalla mine, in the southeast of Uchucchacua area, Oyon, Lima, Peru 77 mm high x 45 mm wide (wire lenght >44 mm) Close-up view (Author: Carles Millan)

Native silver Huantajalla mine, in

Native silver Huantajalla mine, in the southeast of Uchucchacua area, Oyon, Lima, Peru 77 mm high x 45 mm wide (wire lenght >44 mm) (Author: Carles Millan)

Native silver Huantajalla mine, in

Native silver Isle of Skye, Scotland 11mm across This is the silver nugget I found in the stream, the first time I was there. Actually I haven’t had it tested yet, but it is so distinctive, it just has to be. Doesn’t it? (Author: Mike Wood)

Native silver Isle of Skye, Scotla

Native Silver Pöhla-Tellerhäuser Mine, Pöhla, Schwarzenberg District, Erzgebirge, Saxony, Germany (Author: xdxucn)

Native Silver Pöhla-Tellerhäuser M

Native silver crystals (herring bone) covered with safflorite Langis Mine, New Liskeard, Ontario, Canada 7x4x5 cm Etched silver crystals with safflorite coating. (Author: Joseph D'Oliveira)

Native silver cry
Langis Mine, New

Native silver crystals with a safflorite coating Langis Mine, New Liskeard, Ontario, Canada 6x4.5x2 cm This crystal was etched using acid to expose the herring bone silver crystals. As with most of these specimens, a thin coating of safflorite is attached to the silver. (Author: Joseph D'Oliveira)

Native silver cry
Langis Mine, New

Native silver crystals with a safflorite coating Mensilvo Mine, Cobalt, Ontario, Canada 7.5x7x1 cm A nice cluster of silver crystals on a leaf of native silver. Some of the crystals have a thin coating of safflorite. The specimen weighs 179 grams. (Author: Joseph D'Oliveira)

Native silver cry
Mensilvo Mine, Co

Native silver in and on Calcite with acanthite 3cm Mexico. (Author: parfaitelumiere)

Native silver in
3cm

Native Silver in Bornite Coleman Mine, Levack, Ontario, Canada 12 x 4.5 x 3 cm Native silver in bornite from Sudbury is typically formed in thin sheets along joint contacts within bornite veins. These high copper veins are found in the foot wall rocks away from the nickel ore bodies that are commonly mined here. (Author: Joseph D'Oliveira)

Native Silver in
Coleman Mine, Lev

Native Silver in Arsenic, Pöhla. Saxony, GER, Picture width is approx. 8 cm (Author: Montanpark)

Native Silver in Arsenic, Pöhla. S

Native silver on safflorite Langis Mine, New Liskeard, Ontario, Canada 9x5x1 cm Native silver on safflorite, if you look closely, you will see striations on the silver from the lower left to the upper right. These striations are slickensides and are formed as a result of movement in the fault where the silver was forming. (Author: Joseph D'Oliveira)

Native silver on
Langis Mine, New

Native Silver on Arsenic Pöhla - Erzgebirge 6.5 x 5 x 3.5 cm (Author: Joseph D'Oliveira)

Native Silver on
Pöhla - Erzgebirg

Native Silver on Arsenic Pöhla - Erzgebirge 6.5 x 5 x 3.5 (Author: Joseph D'Oliveira)

Native Silver on
Pöhla - Erzgebirg

Native Silver on Calcite Kongsberg Silver Mining District, Flesberg, Buskerud, Norway 5.7 x 2.9 x 2.2 cm "The Cobra" (Author: Don Lum)

Native Silver on Calcite Kongsberg

Native Silver, Elizabeth Hill Mine, Near Karratha, West Pilbara, Western Australia, Australia. 11 x 6 x 3 cm (Author: Samuel)

Native Silver, Elizabeth Hill Mine

Native Silver, Imiter, Morocco, FOV approx. 3.5 cm (Author: Montanpark)

Native Silver, Imiter, Morocco, FO

Native Silver Hi-Ho Mine, Cobalt, Ontario, Canada 12 x 8 x 1.5 cm (Author: Joseph D'Oliveira)

Native Silver
Hi-Ho Mine, Cobal

Native Silver
Pöhla-Tellerhäuser Mine, Pöhla, Schwarzenberg District, Erzgebirgskreis, Saxony/Sachsen, Germany
42 mm x 38 mm (Author: Don Lum)

Native Silver
Pöhla-Tellerhä

Native Silver
Keweenaw County, Michigan, USA
19.5 mm x 13 mm (Author: Don Lum)

Native Silver
Keweenaw County,

Native Sulphur, El Desierto Mine, Cerro Picoloro, Daniel Campos Province, Potosi Department, Bolivia. S8, 10 x 7 x 7cm (Author: Samuel)

Native Sulphur, El Desierto Mine,

Natrojarosite
Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikí (Attica) Prefecture, Greece
FOV = 2.0 mm (Author: Doug)

Natrojarosite
Kamariza Mines,

Natrolemoynite
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
FOV = 4mm (Author: Doug)

Natrolemoynite
Poudrette Quarr

Natrolite Hohentwiel, Singen, Baden-Württemberg, Germany. 4 x 3 cm Very well crystallized material from the type locality. (Author: Andreas Gerstenberg)

Natrolite Hohentwiel, Singen, Bade

Natrolite Hurricane Cliffs, New Harmony, Washington Co., Utah, USA FOV 3 cm (Author: crosstimber)

Natrolite Hurricane Cliffs, New Ha

Natrolite Millington Quarry, Bernards Township, Somerset County, New Jersey, USA 7.6 x 7 cm Natrolite spheres to 1.5 cm on scoria (Author: Frank Imbriacco)

Natrolite Millington Quarry, Berna

Natrolite Mont Saint-Hilaire, Monteregie, Quebec, Canada 5.6 x 6.9 cm. Radiating groups of dull prismatic colorless natrolite associated with acicular black aegirine. The back side is covered with platy polylithionite pictured in the next photo. (Author: crosstimber)

Natrolite Mont Saint-Hilaire, Mont

Natrolite Oisgill Bay, Isle of Skye, Scotland, UK 10cm x 8cm x 4cm Radiating aggregates of natrolite crystals. This was found in a gully around the corner at the north end of Oisgill Bay - on the map this spot is called ’An Ceannaich’. This specimen has been analysed. I went back to the same spot recently and could not find a trace of it; I think it had been buried by rockfall. My recollection is that the natrolite was formed in a vein in the back of the gully. Self-collected 1995. (Author: Mike Wood)

Natrolite Oisgill Bay, Isle of Sky

Natrolite Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada FOV=4mm (Author: Doug)

Natrolite Poudrette quarry (Demix

Natrolite San Agustin Del Valle Fertil, San Juan Prov., Argentina 4.6 x 7.6 x 10.2 cm. Colorless acicular crystals of natrolite to 3.5 cm with reddish-brown iron oxide inclusions. Collected in Summer 2004. (Author: crosstimber)

Natrolite San Agustin Del Valle Fe

Natrolite Sgurr nam Fiadh, Isle of Skye, Scotland, UK 8cm x 4cm x 3cm Crystals of Natrolite found in a very large gas cavity in a weathered boulder. The greenish background (altered basalt) is distinctive and Prof. M.F.Heddle in his famous book ’Mineralogy of Scotland’ (1901) describes Scolecite from this locality on a similar coloured background. But this stuff is definitely Natrolite, it was tested via Alan Dyer in 2002. A mystery perhaps? Self-collected 1994. (Author: Mike Wood)

Natrolite Sgurr nam Fiadh, Isle of

Natrolite Snake (Laurel Hill), New Jersey, USA 1 cm (Author: John Medici)

Natrolite Snake (Laurel Hill), New

Natrolite Upper New Street Quarry, Paterson, New Jersey, USA 6 cm. (Author: Gary Moldovany)

Natrolite Upper New Street Quarry,

Natrolite Yeola, Nasik District, Maharashtra, India 7.3 x 9.8 cm. Divergent sprays of transparent prismatic natrolite associated with small pseudocubic crystals of apophyllite-(KF) on brown basalt. Recovered from a well dig in Sept. 2011. (Author: crosstimber)

Natrolite Yeola, Nasik District, M

Natrolite (?) / Mesolite (?), Heulandite-Ca
Hvalfjörður, Capital Region, Iceland
29x48x26mm (Author: Bergur_E_Sigurdarson)

Natrolite (?) / Mesolite (?), Heulandite-Ca
Hvalfjörður, Capital R

Natrolite (?), Stilbite
Hvalfjörður, Capital Region, Iceland
63x38x34mm (Author: Bergur_E_Sigurdarson)

Natrolite (?), Stilbite
Hvalfj

Natrolite + Analcime Oisgill Bay, Isle of Skye, Scotland, UK 10mm crystals Natrolite crystals to 10mm on small analcime crystals in a gas cavity in basalt lava. This material has been analysed. Self-collected 2004. (Author: Mike Wood)

Natrolite + Analcime Oisgill Bay,