-
Nice marcasite cluster (3 cm, undamaged) in marl from the Kleeberg quarry, Lengerich near Osnabrück, Westphalia. (Author: Andreas Gerstenberg)
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Nice marcasite piece with some brown baryte on. Rather old find from Zobes, Voigtland, Saxony. About 6,5 cm in width. (Author: Andreas Gerstenberg)
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Nice mini clusters..these tend to have smokey or ammy phantoms in them and they sit real well on a shelf or desk-uncleaned (Author: Jason)
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Nice piece...glad to have it on a base. (Author: Gail)
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Nice polished pastel agate from the classic location Wendelsheim near Alzey, Rhineland-Palatinate. Sample 6 cm. (Author: Andreas Gerstenberg)
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Nice rainbow fluorite (polished) from Hermine mine, Wölsendorf, Bavaria. (Author: Andreas Gerstenberg)
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Nice schorl crystals (3,5 cm) with muscovite from the Papiermühle granite gravel pit near Selb, Fichtelgebirge, Bavaria. (Author: Andreas Gerstenberg)
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Nice yellow tetrahedrons of the rare beryllium silicate helvite from the type locality, Unverhofft Glück mine near Antonsthal, Erzgebirge, Saxony. Sitting with some diopsite and sphalerite on calcite. The largest tetrahedron measures a little more than 3 mm. (Author: Andreas Gerstenberg)
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Nice, new trowel. (Author: vic rzonca)
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Nickeline
Cala Mines - Cala - Huelva - Andalusia - Spain
6,9 x 3,8 cm
Aggregate of crystals; 1,2 cm. Found in 2001. (Author: DAni)
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Nickeline
Eisleben, Mansfeld Basin, Saxony-Anhalt/Sachsen-Anhalt, Germany
2 mm (Author: Rewitzer Christian) -
Nickelskutterudite (chloanthite)
Weißer Hirsch Mine, Schneeberg District, Erzgebirgskreis, Saxony/Sachsen, Germany
7 x 5 cm (Author: Andreas Gerstenberg) -
Nifontovite, 6 cm across group. Rey y Reina Mine, Charcas, San Luis Potosi, Mexico.
Big brother to the one my daughter won the Lidstrom Trophy with at Tucson in 2009 (Author: Peter Megaw)
-
Nifontovite, 7 cm single crystal, Rey y Reina Mine, Charcas, San Luis Potosi, Mexico.
Inclusions are bakerite and calcite (Author: Peter Megaw)
-
Nifontovite
Charcas
San Luis Potosi
Mexico
2,2cm (Author: parfaitelumiere)
-
Niobokupletskite
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
FOV = 2mm (Author: Doug) -
Niveolanite
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
FOV = 4.0 mm (Author: Doug) -
Nontronit (St. Andreasberg).JPG (Author: Andreas Gerstenberg)
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Nontronite (variety Ca-rich Nontronite)
Can Súria Quarry (Guixeres Quarry), Maçanet de la Selva, Comarca La Selva, Gerona / Girona, Catalonia / Catalunya, Spain
FOV 7 mm (Author: Firmo Espinar) -
Nontronite (variety Ca-rich Nontronite)
Can Súria Quarry (Guixeres Quarry), Maçanet de la Selva, Comarca La Selva, Gerona / Girona, Catalonia / Catalunya, Spain
FOV 7 mm (Author: Firmo Espinar) -
Nontronite (variety Ca-rich Nontronite)
Can Súria Quarry (Guixeres Quarry), Maçanet de la Selva, Comarca La Selva, Gerona / Girona, Catalonia / Catalunya, Spain
FOV 8 mm (Author: Firmo Espinar) -
Nontronite
Can Súria Quarry (Guixeres Quarry), Maçanet de la Selva, Comarca La Selva, Gerona / Girona, Catalonia / Catalunya, Spain
FOV 23mm (Author: Firmo Espinar) -
Nontronite
Can Súria Quarry (Guixeres Quarry), Maçanet de la Selva, Comarca La Selva, Gerona / Girona, Catalonia / Catalunya, Spain
50mm x 46mm x 40mm (Author: Firmo Espinar) -
Norbergite and Spinel on Calcite
Oak-saung-taung, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region (Mandalay Division), Myanmar (Burma)
Specimen size: 9.3 × 8.4 × 4.3 cm (Author: Jordi Fabre) -
Norbergite, Diopside SW UV
Rhein Property, Amity NY USA
15 cm (Author: Glenn Rhein)
-
Nordstrandite
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
FOV=2mm (Author: Doug)
-
Normandite
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
FOV = 2mm (Author: Doug) -
north geronimo mine La Paz AZ.jpg (Author: d_hawtho)
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Not even frequent is bismuthinite from Altenberg, Erzgebirge, Saxony. The pic shows a 1 x 1 cm needle aggregate on fluorite and quartz from the Römer Shaft, dating from the 1950s. (Author: Andreas Gerstenberg)
-
Not long after starting to dig. (Author: Pierre Joubert)
-
Not much to look at, really. (Author: vic rzonca)
-
Not so bad topaz crystal, that nested in a matrix of lepidolite crystals, from Virgem da Lapa, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil
Size 105 x 70 x 60 mm (Author: olelukoe)
-
Not so easy ;) (Author: ploum)
-
Not the ’Famous Grouse’ - this is the infamous ptarmigan! Brown in summer and white in winter, this fine fellow appears to be in full breeding plumage. I think that’s why he was standing his ground - you don’t normally get this close to them, even with a zoom lens. (Author: Mike Wood)
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Not the last day on the bench, but close. Was that a snow flake Don? (Author: vic rzonca)
-
Now it is my turn at the pocket. (Author: Pierre Joubert)
-
Nut clearing. (Author: vic rzonca)
-
nvnvnv.JPG (Author: Pierre Joubert)
-
O,O,O wow and this....! (Author: h.abbasi)
-
Obidian Picture one, Origin Unknown
7.7cm x 4.9cm x 3.1cm (Author: Screenname)
-
Oblique view, crossed-eye stereo pair (Author: Gerhard Niklasch)
-
Obsidian Picture two, Origin Unknown
7.7cm x 4.9cm x 3.1cm (Author: Screenname)
-
Oco agates
(Author: Kelly Jean)
-
Octahedral Fluorite crystals with well defined edges and faces. Pointe Kurz (3600 m altitude) Haute-Savoie, France. Main crystal size is 2.1 x 1.5 cm.
Specimen & Photo: Fabre Minerals (Author: Joan Rosell)
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Octahedral Fluorite on Albite matrix with Smoky Quartz. (2001) Pointe Kurz (3600 m altitude) Haute-Savoie, France. Size 19x 15.5 x 9 cm.
Specimen & Photo: Fabre Minerals (Author: Joan Rosell)
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Octahedral Fluorite with Dolomite and Quartz
Shangbao Mine, Leiyang, Hengyang Prefecture, Hunan Province, China
Specimen size: 11.3 × 9.5 × 9.2 cm / main crystal (Author: Jordi Fabre)Octahedral Fluorite with Dolomite and Quartz
Shangbao Mine, Leiyang, Hengyang Prefecture, Hunan -
Octahedral green Fluorite. O.T.E. Prospect, Grant County, New Mexico, USA. The "digger" is a friend of mine. About 13 cm. (Author: Darren)
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Octahedral Pyrite; Huanzala Mine, Huallanca dist., Huanaco, Peru.
Specimen dimensions 60 x 38 x 24mm, xx to 31mm (edge), weight 98g. GN’s collection id 09PEP-001.
Stereo pair, taken in direct sunlight. (Author: Gerhard Niklasch)
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Octahedral Pyrite; Huanzala Mine, Huallanca dist., Huanaco, Peru.
Specimen dimensions 60 x 38 x 24mm, xx to 31mm (edge), weight 98g. GN’s collection id 09PEP-001.
Stereo pair, taken in direct sunlight. (Author: Gerhard Niklasch)
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Octahedral Pyrite; Huanzala Mine, Huallanca dist., Huanaco, Peru.
Specimen dimensions 60 x 38 x 24mm, xx to 31mm (edge), weight 98g. GN’s collection id 09PEP-001.
Taken in direct sunlight. (Author: Gerhard Niklasch)
-
Octahedral Pyrite; Huanzala Mine, Huallanca dist., Huanaco, Peru.
Specimen dimensions 60 x 38 x 24mm, xx to 31mm (edge), weight 98g. GN’s collection id 09PEP-001.
Taken in direct sunlight. (Author: Gerhard Niklasch)
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Offretite
Fittà , Soave, Verona Province, Veneto, Italy
1.32 mm geode with some Offretite acycular crystals under ball formation (Author: Matteo_Chinellato)
-
Offretite
Fittà , Soave, Verona Province, Veneto, Italy
1.45 mm area with several Offretite crystal under ball formation (Author: Matteo_Chinellato)
-
Offretite
Scagno Mt., Case Nori, Montorso Vicentino, Vicenza province, Veneto, Italy
Nice group of 2 mm Offrétite tufts (Author: Matteo_Chinellato)
-
Offset at the fault line of the Holyoke range. (Author: vic rzonca)
-
Oh my... (Author: Gail)
-
Oisgill Bay, Isle of Skye, Scotland
The north end of Oisgill bay. An Ceannaich is the cliff around the corner. The cliffs are 600 feet (190m) high and scary / awe-inspiring !
Photo taken Easter 2013. (Author: Mike Wood)
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Okaruso mine flourite crystal cluster-namibia-73g.jpg (Author: Anton Potgieter)
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Okenite
Kandivali Quarry, Malad, Mumbai District, Maharashtra, India
17.4 x 29.8 cm.
An elongated cavity in black basalt lined with white spheres of acicular okenite, prismatic white laumontite, and hemispheres of white gyrolite. (Author: crosstimber)
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Okenite
Khnadivali Quarry, Mumbai, Maharashtra, India
1mm x Sub mm (Author: Mark Ost)
-
Okenite
Khnadivali Quarry, Mumbai, Maharashtra, India
1mm diameter (Author: Mark Ost)
-
Okenite
Poonah, Maharashtra, India
8x6x5 cm (Author: B&A)
-
Okenite, Gyrolite, Quartz
Malad Quarry, Malad, Mumbai (Bombay), Mumbai District, Maharashtra, India
18.0 x 13.5 cm (Author: am mizunaka) -
Okenite, Gyrolite
Nashik District (Nasik), Maharashtra, India
11 x 10 cm (Author: Volkmar Stingl) -
Okenite, Prehnite, Apophyllite, Gyrolite
Mumbai (Bombay), Mumbai District (Bombay District), Maharashtra, India
6.3 x 4 cm (Author: xdxucn)
-
Okenite, Prehnite, Apophyllite, Gyrolite
Mumbai (Bombay), Mumbai District (Bombay District), Maharashtra, India
6.3 x 4 cm (Author: xdxucn)
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Okenite, Stilbite
Valea Arsului, Brad, Transylvania, Romania
FOV 45 mm
An active quarry close to the old gold mines of Brad yield nice and unusual Zeolite minerals in Dacite (Author: Gerhard Brandstetter)
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Okenite
Malad Quarry, Malad, Mumbai (Bombay), Mumbai District, Maharashtra, India
Detail (Author: Firmo Espinar) -
Okenite
Malad Quarry, Malad, Mumbai (Bombay), Mumbai District, Maharashtra, India
Detail (Author: Firmo Espinar) -
Okenite
Malad Quarry, Malad, Mumbai (Bombay), Mumbai District, Maharashtra, India
97mm x 63mm x 26mm (Author: Firmo Espinar) -
Okenite
Malad Quarry, Malad, Mumbai (Bombay), Mumbai District, Maharashtra, India
97mm x 63mm x 26mm (Author: Firmo Espinar) -
Okenite
Bombay Quarry, Mumbai Suburban District, Maharashtra, India
90 mm x 40 mm x 10 mm (Author: Dany Mabillard) -
okoruso-2-1.jpg (Author: Montanpark)
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Old french label, former Leonhard collection. (Author: Andreas Gerstenberg)
-
Old hematite specimen from Tilkerode, Harz mtns. (famous for selenide minerals). 52 mm in width. (Author: Andreas Gerstenberg)
-
Old label (around 1900) (Author: Andreas Gerstenberg)
-
Old label of a Moschellandsberg cinnabar. About 1880. (Author: Andreas Gerstenberg)
-
Old label Stephanite Bräunsdorf (Author: Andreas Gerstenberg)
-
Old labels of calcite (Author: Roger Warin)
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old shaft in Peña del Hierro (Nerva, Huelva, Spain). The origin of the famous river Tinto is in the vicinity...All this zone is famous because the Astrobiology work performed here. The zone has been considered a "Mars analog" on Earth and the study of extremophile organisms received a lot of attention here. (Author: Cesar M. Salvan)
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Old vial with rounded pyrope crystals ("Bohemian Garnet") from Zöblitz, Erzgebirge, Saxony, a famous pyrope locality. (Author: Andreas Gerstenberg)
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Old-style ANSP-label (Author: Andreas Gerstenberg)
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Older austinite find...most sold as smithsonite. Piece is 10 cm across (Author: Peter Megaw)
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Olivenite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion, AttikÃ, Greece
fov 3 mm (Author: ploum)
-
Olivenite
Christiana mine, Laurion, Attika, Greece
fov 1.5 mm (Author: ploum)
-
Olivenite
Ibiajara, Bahia, Brazil
3.9 x 5.8 cm.
Slender green olivenite crystals to 1 cm in length coated with micro-spheres of cornwallite and malachite on a gossanous matrix. From a new find in 2006. (Author: crosstimber)
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Olivenite
Laurion, Greece
FOV 10 mm (Author: ploum)
-
Olivenite
Serpieri Mine, Kamariza Mines, Agios Konstantinos, Lavrion, AttikÃ, Greece
fov 3.5 mm (Author: ploum)
-
Olivenite and Agardite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 2.0 mm (Author: ploum) -
Olivenite and Agardite
Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
fov 1.1 mm (Author: ploum) -
Olivenite and azurite
Christiana Mine, Laurion, Greece
fov 9 mm (Author: ploum)
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Olivenite and Azurite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 3 mm (Author: ploum) -
Olivenite and Azurite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 8.0 mm (Author: ploum) -
Olivenite and Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
28mm x 21mm x 16mm (Author: Heimo Hellwig) -
Olivenite and conichalcite
fov 3 mm
(Author: ploum)
-
Olivenite and Conichalcite
fov 5.3 mm
(Author: ploum)
-
Olivenite and conichalcite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 2 mm (Author: ploum) -
Olivenite and Conichalcite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 1.8 mm (Author: ploum) -
Olivenite and Conichalcite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 1.6 mm (Author: ploum) -
Olivenite and Conichalcite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 1.8 mm (Author: ploum) -
Olivenite and Conichalcite
Hilarion Mine, Hilarion area, Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 1.8 mm (Author: ploum) -
Olivenite and Conichalcite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 1.8 mm (Author: ploum) -
Olivenite and Cornwallite
Ibiajara District, Rio do Pires, Bahia, Northeast Region, Brazil
fov 2.2 mm (Author: ploum) -
Olivenite and Cornwallite
Ibiajara District, Rio do Pires, Bahia, Northeast Region, Brazil
fov 2.2 mm (Author: ploum) -
Olivenite and Cornwallite
Ibiajara District, Rio do Pires, Bahia, Northeast Region, Brazil
fov 2.6 mm (Author: ploum) -
Olivenite and Cornwallite
Ibiajara District, Rio do Pires, Bahia, Northeast Region, Brazil
fov 2.6 mm (Author: ploum) -
Olivenite and Cornwallite
Ibiajara District, Rio do Pires, Bahia, Northeast Region, Brazil
fov 2.6 mm (Author: ploum) -
Olivenite and Quartz
Serpieri Mine, Kamariza Mines, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 2.2 mm (Author: ploum) -
Olivenite and Quartz
Serpieri Mine, Kamariza Mines, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 2.2 mm (Author: ploum) -
Olivenite and Quartz
Serpieri Mine, Kamariza Mines, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 2.2 mm (Author: ploum) -
Olivenite and Quartz
Cornwall, England / United Kingdom
(Author: Jordi Fabre) -
Olivenite from Clara Mine, Black Forest, Germany.
Field of view: 1.6 mm (Author: Rewitzer Christian)
-
Olivenite from Cocotas Mines, Tijola, Granada, Spain.
Field of view: 3.2 mm (Author: Rewitzer Christian)
-
Olivenite on Conichalcite
Hilarion Mine, Hilarion area, Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 1.8 mm (Author: ploum) -
Olivenite with azurite
Christiana mine, Laurion, Greece
fov 4 mm (Author: ploum)
-
Olivenite with conichalcite
Christiana mine, Laurion, Greece
fov 4 mm (Author: ploum)
-
Olivenite with conichalcite
Christiana mine, Laurion, Greece
fov 4mm (Author: ploum)
-
Olivenite with conichalcite and azurite
Christiana mine, Laurion, Greece
fov 4 mm (Author: ploum)
-
Olivenite with malachite
Christiana mine, Laurion, Greece
fov 4 mm (Author: ploum)
-
Olivenite xls
Tsumeb, Namibia
Size: Small Cabinet
Specimen: William Pinch Collection
Photo: Jeff Scovil & The RRUFF Project (Author: Pinch Bill)
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Olivenite, azurite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion, AttikÃ, Greece
3 mm (Author: ploum)
-
Olivenite, azurite and conichalcite
Christiana mine, Laurion, Greece
fov 9 mm (Author: ploum)
-
Olivenite, Cornwallite
Gold Hill Mine, Gold Hill, Gold Hill District, Tooele County, Utah, USA
FOV = 3.5 mm (Author: Doug) -
Olivenite, quartz, calcite
Clara Mine, Wolfach, Black Forest, BW, Germany
fov 3mm (Author: ploum)
-
Olivenite, quartz, calcite
Clara Mine, Wolfach, Black Forest, BW, Germany
fov 3 mm (Author: ploum)
-
Olivenite
Clara Mine, Wolfach, Black Forest, Germany
fov 3 mm (Author: ploum)
-
Olivenite
Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
fov 1.7 mm (Author: ploum) -
Olivenite
Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
fov 1.7 mm (Author: ploum) -
Olivenite
Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
fov 1.5 mm (Author: ploum) -
Olivenite
Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
fov 1.5 mm (Author: ploum) -
Olivenite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 2.6 mm (Author: ploum) -
Olivenite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 2.6 mm (Author: ploum) -
Olivenite
MarÃa Josefa Mine, Rodalquilar, NÃjar, Comarca Metropolitana de AlmerÃa, AlmerÃa, Andalusia, Spain
FOV 7 mm (Author: Firmo Espinar) -
Olivenite
Serpieri Mine, Kamariza Mines, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
fov 5.5 mm (Author: ploum) -
Olivenite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
34mm x 21mm x 25mm (Author: Heimo Hellwig) -
Olivenite
Majuba Hill Mine, Antelope District, Pershing County, Nevada, USA
FOV = 3.4 mm (Author: Doug) -
Olivenite
Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
FOV = 3.4 mm (Author: Doug) -
Olivenite
Burrus Mine, Pyramid District, Washoe County, Nevada, USA
FOV = 1.7 mm (Author: Doug) -
Olivenite
Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
fov 2.1 mm (Author: ploum) -
Olivenite
Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
fov 1.8 mm (Author: ploum) -
Olivenite
Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
fov 1.55 mm (Author: ploum) -
Olivenite
Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
fov 2.3 mm (Author: ploum) -
Olivenite
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora, Mexico
Crystal size: 1.2 × 0.2 cm (Author: Jordi Fabre) -
Olivenite
Majuba Hill Mine, Antelope District, Pershing County, Nevada, USA
5.5 x 3.2 x 2.0 cm (Author: Michael Shaw) -
Olivenite
Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikà (Attica) Prefecture, Greece
3,5 x 3,5 cm (Author: Volkmar Stingl) -
Olivenite
Clara Mine, Rankach Valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
1,5 x 1,3 cm (Author: Volkmar Stingl) -
Olivenite
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora, Mexico
2.0 x 1.3 cm (Author: Michael Shaw) -
olivin.jpg (Author: Tobi)
-
Olivine Group (variety peridot)
Pyaung Gaung mine, Bernardmyo village, north of Mogok, Burma (Myanmar).
17 mm. (Author: Ru Smith)
-
Olivine Group (variety peridot)
Pyaung Gaung mine, Bernardmyo village, north of Mogok, Burma (Myanmar).
15 mm. (Author: Ru Smith)
-
Olivine Group (variety peridot)
Pyaung Gaung mine, Bernardmyo village, north of Mogok, Burma (Myanmar).
22 mm long. (Author: Ru Smith)
-
Olivine series, Forsterite var.Peridot with Calcite; Sapat Gali (Soppat), Kohistan, Pakistan.
50x35x33mm, 56g. GN’s collection id 09PKOcm01.
Taken in direct sunlight. Stereo pair. (Author: Gerhard Niklasch)
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Olivine series, Forsterite var.Peridot with Calcite; Sapat Gali (Soppat), Kohistan, Pakistan.
50x35x33mm, 56g. GN’s collection id 09PKOcm01.
Taken in direct sunlight. Stereo pair. (Author: Gerhard Niklasch)
-
Olivine series, Forsterite var.Peridot with Calcite; Sapat Gali (Soppat), Kohistan, Pakistan.
50x35x33mm, 56g. GN’s collection id 09PKOcm01.
Taken in direct sunlight. (Author: Gerhard Niklasch)
-
Olivine series, Forsterite var.Peridot with Calcite; Sapat Gali (Soppat), Kohistan, Pakistan.
50x35x33mm, 56g. GN’s collection id 09PKOcm01.
Taken in direct sunlight. (Author: Gerhard Niklasch)
-
Olivine, var. peridot, St John’s Island, Egypt, 2 x 1.1 x 0.6 cm (Author: Jim)
-
Ollisdal Geo, Duirinish, Isle of Skye, Scotland, UK
Photo (courtesy of D.I Green) of me trying to get across the steep bit. I retreated as I was in danger of getting wet and it was a long walk back to the car ! Photo taken same day as the previous stilbite specimen was collected in May 1996. (Author: Mike Wood)
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Olmiite
N’Chwaning II Mine, Kuruman, N. Cape Prov., South Africa
4.0 x 6.0 cm
Drusy, colorless calcite with a 1.9 cm group of lustrous, peach-colored olmiite and small white spherical masses of oyelite. (Author: crosstimber)
-
Olmiite
N’Chwaning Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa
2.5 x 2.4 cm (Author: Don Lum)
-
Olmiite
N’Chwaning Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa
2.5 x 2.4 cm (Author: Don Lum)
-
Olmiite with Bultfonteinite
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
100 x 40 x 20 mm (Author: Rob Schnerr) -
Olmiite with Bultfonteinite
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
100 x 40 x 20 mm (Author: Rob Schnerr) -
Olmiite with Bultfonteinite
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
100 x 40 x 20 mm (Author: Rob Schnerr) -
Olmiite, Calcite
N’Chwaning II Mine, Kalahari Manganese Fields, South Africa
4.2 x 3.3 cm (Author: Don Lum)
-
Olmiite, Calcite
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
30mm x 30mm x 20mm (Author: Don Lum) -
Olmiite
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
1.8 x 2.0 cm (Author: crosstimber) -
Olmiite
N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
4.1 cm (Author: Nunzio) -
Olmiite
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
3.6 x 4.7 cm (Author: crosstimber) -
Olmiite
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
5.1 x 3.7 cm (Author: am mizunaka) -
Olmiite
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
11.5 x 7.5 cm (Author: am mizunaka) -
Olmiite
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
40 x 33 mm (Author: Sante Celiberti) -
Olmiite
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province, South Africa
26 x 23 x 21 mm (Author: TamaHiguchi) -
Olshanskyite and Roweite
Shijiangshan Mine, Shijiangshan village, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region, China
5.4 x 4.1 cm (Author: Michael Shaw) -
Olshanskyite with Andradite, Wurtzite and Galena
Shijiangshan Mine, Shijiangshan village, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region, China
103 x 100 x 57 mm (Author: GneissWare) -
Olshanskyite with Andradite, Wurtzite and Galena
Shijiangshan Mine, Shijiangshan village, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region, China
103 x 100 x 57 mm (Author: GneissWare) -
Olshanskyite with Roweite and Andradite
Shijiangshan Mine, Shijiangshan village, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region, China
Specimen size: 7.5 × 4.6 × 3.4 cm (Author: Jordi Fabre) -
olshanskyite xrd.jpg (Author: Cesar M. Salvan)
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Olshanskyite
Shijiangshan Mine, Shijiangshan village, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region, China
FOV 1.5 cm (Author: Cesar M. Salvan) -
Olshanskyite
Shijiangshan Mine, Shijiangshan village, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region, China
FOV 1.5 cm (Author: Cesar M. Salvan) -
Olshanskyite
Shijiangshan Mine, Shijiangshan village, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region, China
FOV 1.5 cm (Author: Cesar M. Salvan) -
Olshanskyite
Shijiangshan Mine, Shijiangshan village, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region, China
FOV 1.5 cm (Author: Cesar M. Salvan) -
Olshanskyite
Shijiangshan Mine, Shijiangshan village, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region, China
3,5 x 3 cm (Author: Volkmar Stingl) -
Olshanskyite
Shijiangshan Mine, Shijiangshan village, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region, China
3,5 x 3 cm (Author: Volkmar Stingl) -
olv01.jpg (Author: Tobi)
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olvXL1.jpg (Author: Tobi)
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olvXL2.jpg (Author: Tobi)
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olvXL3.jpg (Author: Tobi)
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Omphacite
Silberbach, Hof, Bavaria, Germany
sample width: 5 cm
Old material with intergrown pyrope crystals. Ex Bergakademie Freiberg. Type locality. (Author: Andreas Gerstenberg)
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Omphacite
Bric Vert, Quincinetto, Metropolitan City of Turin Province, Piedmont (Piemonte), Italy
92 x 73 mm (Author: Sante Celiberti) -
Omphacite
Bric Vert, Quincinetto, Metropolitan City of Turin Province, Piedmont (Piemonte), Italy
92 x 73 mm (Author: Sante Celiberti) -
On a base of cubic Fluorite of honey yellow color, very bright and partially covered by little crystals of Barite, grows the Calcite crystals, doubly terminated and with dominant very acute scalenohedron faces.
Moscona Mine (Author: Joan Rosell)
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On a matrix of cleavelandite stands a stunning prismatic, peach coloured topaz measuring 28mm x 29mm and 40mm tall. from Pakistan, Northern Areas, Skardu, Yunu, Shigar Valley
Size 100 x 50 x 58 mm (Author: olelukoe)
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On my way back to my bivi place, crossing the Lairig Ghru for the second time. At least the cloud has gone, revealing a much greener vista, looking south down the valley where the river Dee flows. (Author: Mike Wood)
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On my way home on a remote farm road. (Author: Pierre Joubert)
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On my way up. (Author: Pierre Joubert)
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On occasion I have been known to build gardens and this stuff came in by the truckload so I used it everywhere. The slabs I cut this from are from India. Im not 100% on what it is, I thought maybe Manganese? (Author: nurbo)
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On our way to dig for crystals, we encounter scenery like this. (Author: Pierre Joubert)
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On the other side is a vug with a couple of Aragonites to 0.9 cm in it. (Author: nurbo)
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On the road back home; mountain scenery somewhere just outside Worcester(not UK but SA) (Author: Pierre Joubert)
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ON THE ROAD TO THE MILPILLAS MINE
LOCATION
The Milpillas Copper Mine, also known as La Parreña Mine, is located in the Santa Cruz Municipality of Sonora. Sonora is a large state located in northwestern Mexico. It borders the U.S. states of Arizona and New Mexico to the north, the Mexican states of Baja California to the west, Chihuahua to the east, and Sinaloa to the south. Its western edge lies along the Gulf of California (Sea of Cortez). Much of the state is covered by the Sonoran Desert.
The Milpillas Copper Mine is located approximately 40 kilometers (25 miles) south of the US-Mexico border, positioning it as an integral part of a larger, cross-border mining region deeply connected to Arizona’s long-standing mining industry. Specifically, it lies about 60 kilometers (37 miles) southwest of Bisbee, Arizona, a town renowned for its Copper mining history. Tucson, a significant city in Southern Arizona, is roughly 188 kilometers (117 miles) to the north-northwest.
Closer to home, the Milpillas mine is situated about 20 kilometers northwest of Cananea, a significant Mexican mining center with a population of 30,000. Cananea’s economy heavily relies on the large Buena Vista del Cobre mine. The closest settlement to the Milpillas Mine (La Parreña) is the small village of Milpillas, with just over 170 residents. Other nearby communities, such as Cuitaca and Vicente Guerrero, underscore the area’s rural and mining-focused character. Access to the Milpillas site from Cananea involves navigating a mix of paved, secondary, and unpaved mining roads.
BRIEF HISTORY
The Milpillas Mine in Sonora, Mexico, discovered in 1978, faced an uphill battle for development. For decades, it lay dormant, hampered by low Copper prices and significant geological hurdles, most notably being buried beneath 250 meters of water-saturated alluvium. However, extensive exploration efforts by Minera Cuicuilco and Industrias Peñoles between the 1980s and 2001 ultimately confirmed substantial high-grade Copper reserves.
Underground mining operations for Copper finally began in 2006. Milpillas quickly gained fame not just for its Copper, but also for its world-class mineral specimens, particularly the striking "electric blue" Azurite crystals, Malachite, and Cuprite found in its supergene enrichment zones. Despite its geological riches, operations were indefinitely suspended in 2020 due to high costs and falling Copper prices. Fortunately, mining activities resumed in June 2022 and are ongoing.
Geological Setting and Mineralization
The Milpillas mine is discreetly situated within the Cuitaca Graben, a prominent north-south trending extensional basin within Sonora’s Basin and Range province. The valuable Copper deposit was initially concealed beneath younger layers of Tertiary gravels and Quaternary alluvium. The underlying geology primarily consists of volcaniclastic rocks from the Laramide Mesa Formation and older Jurassic Henrietta Formation, which have been intruded by monzonitic to quartz monzonitic porphyry stocks. High-grade supergene enrichment, a process that generated the mine’s renowned Azurite, Malachite, and other secondary Copper minerals, occurred within these host rocks at depths ranging from 150 to 750 meters below the surface.
Climate, Flora, and Fauna
Milpillas experiences Sonora’s characteristic arid to semi-arid climate, set within a Basin and Range topography of alternating mountain ranges and expansive valleys. While higher elevations near Cananea support scattered pine-oak forests, Milpillas’ immediate vicinity is a typical desert environment at lower elevations. The flora is well-adapted to drought, including various cacti (such as nopal and barrel cactus), mesquite trees, creosote bush, and resilient desert grasses and shrubs. The fauna, equally suited to these conditions, includes coyotes, diverse rodents, and numerous reptile species, such as snakes and lizards. (Author: silvia)
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On the way back home, Riana took this picture while I was driving. (Author: Pierre Joubert)
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On the way back. (Author: Pierre Joubert)
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On the way back. (Author: Pierre Joubert)
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Once on the glacier (Mer de Glace) it is several kilometres walk to some more ladders, to get off the glacier and up the path to the Courvercle Hut below the Aiguille du Moine. The glacier is ’dry’ this low down at this time of year so is mostly easy to walk on - you can see the objective dangers (crevasses) and avoid them. A refreshing cold breeze blows down the valley, otherwise it would be hot under the summer sun.
Photo scanned from slide. (Author: Mike Wood)
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One day at the mine, blue sky, breezy, and sunshine. (Author: vic rzonca)
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One half of my mineral display.
Cabinet is 80cm x 50cm.
Six (2W) LED (4100K) strips. (Author: Mike Wood)
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One more for the guys who toiled on the square set and single jack. (Author: vic rzonca)
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One of about 3 pockets that I found on the day. (Author: Pierre Joubert)
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One of my amethists from the railroad (it was a present from Joan Carles, the photo is not good, it was made by me, sorry :( , it has 2cm width) (Author: Sergio)
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One of my collecting chums with a large calcite boat. (Author: vic rzonca)
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One of my favorites. 2 dark red / cranberry tourmalines on lepidolite matrix. Both of these have gemmy tops, and perfect terminations. The smaller xtal has one repair. This piece is from Xanda Mine, Virgem de Lapa, Minas Gerias Brazil. Dimensions are 8.9 x 5.1 x 5 cm and weight is 105 grams. One picture is in the case with backlight. (Author: VRigatti)
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One of my favourite wild flowers; a vine with beautiful flowers. (Author: Pierre Joubert)
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One of my favourites, I call this the "Lighthouse". (Author: Gail)
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One of my showcases of Tuscan minerals, about to collapse. (Author: Sante Celiberti)
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One of my showcases of world-wide minerals. Specimens don’t make their figure because of the overcrowding. (Author: Sante Celiberti)
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One of our 2 RPS’s (royal pavement specials), Yogi (reminding one of Yogi bear, with his short ear stubs), who was rescued about ten years ago, from a squatter camp after both his ears had been cut off. He is a very happy dog and just as addicted to the mountains, just like us. (Author: Pierre Joubert)
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One of the areas where I dug. (Author: Pierre Joubert)
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One of the cleaned specimens; sorry no size. (Author: Pierre Joubert)
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One of the excelent photos of Christian Rewitzer. An Anatase from Adra, AlmerÃa, Spain. (Author: Rewitzer Christian)
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One of the glass shelfs of the Tsumeb collection. More pictures in the next post (Author: Herman van Dennebroek)
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One of the many small butterflies of the Western Cape mountains. (Author: Pierre Joubert)
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One of the nicer specimens of the find of Rhodochrosites and Kentrolites from Rivet Quarry, Peyrebrune, France. (Author: Jordi Fabre)
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One of the railroad new outcrops. Left: medium to coarse grained leucogranite which has yielded crystallized minerals. Lower right: Miocene arkoses. Upper right: Miocene basalt lava flows, without mineralogical interest. (Author: davidsoler)
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One of the shelves in the Waddell Case, north wall. (Author: Ed Huskinson)
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One of the smaller crystals (~ 15 mm) that shows how the duftite is intergrown with the calcite. (Author: Tobi)
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One of the specimens I removed. (Author: Pierre Joubert)
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One of the specimens I removed. (Author: Pierre Joubert)
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One of the specimens I removed. (Author: Pierre Joubert)
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One of the specimens she removed. (Author: Pierre Joubert)
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One of the steepest parts of the road in the distance. Here is where we leave the valley floor. (Author: John S. White)
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One of the work areas. The larger pocket zone is low on the face, but many smaller, 10 cm. holes are above. The floor of the bench is the bottom of the formation and is barren. (Author: vic rzonca)
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One of these wonderful Chalcopyrites with Siderite
Specimen Size: 12.5 × 6.9 × 5.3 cm.
Main crystal size: 1 × 0.9 cm.
Locality: Hezhang County, Bijie Prefecture, Guangxi, China
Mined in 2012 (Author: Jordi Fabre)
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One of twenty large boulders (Author: Glenn Rhein)
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One side of amethyst I acquired while there. It is 6.5 cm across. (Author: John S. White)
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One we found last weekend with very small green facet grade on the right side..not enough to cut anything..(we didn’t find much this day as we were trying some sample digging) (Author: Jason)
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Oneillite
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
FOV = 4mm (Author: Doug) -
Onoratoite
Le Cetine Mine, Chiusdino, Siena, Tuscany, Italy
fov 1.5 mm (Author: Rewitzer Christian)
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Opal
Erongo Mountain, Namibia
2cm x 1cm x .2cm
Opal (UV light) (Author: Mark Ost)
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Opal
Erongo Mountain, Namibia
2cm x 1cm x .2 cm
Opal (indirect sunlight) (Author: Mark Ost)
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Opal
Erongo Mountain, Namibia
2cm x 1 cm x .2 cm
Opal (tungsten light) (Author: Mark Ost)
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Opal
Fornaccia, Fornovolasco, Vergemoli, Apuan Alps, Lucca Province, Tuscany, Italy
6.84 mm blue-light Opal concrections (Author: Matteo_Chinellato)
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Opal
Koroit, Queensland, Australia
6.8 x 4.1 cm and 6.2 x 2.8 cm (Author: Don Lum)
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Opal
Koroit, Queensland, Australia
6.8 x 4.1 cm and 6.2 x 2.8 cm (Author: Don Lum)
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Opal
Koroit, Queensland, Australia
6.8 x 4.1 cm and 6.2 x 2.8 cm (Author: Don Lum)
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Opal
Koroit, Queensland, Australia
6.8 x 4.1 cm and 6.2 x 2.8 cm (Author: Don Lum)
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Opal
Queensland, Australia
15 x 6.3 x 5 cm (Author: Don Lum)
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Opal
Queensland, Australia
15 x 6.3 x 5 cm (Author: Don Lum)
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Opal
Queensland, Australia
15 x 6.3 x 5 cm
Cutting boulder opal can be really messy with the ironstone turning to mud under the grinding wheels. (Author: Don Lum)
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Opal
Queensland, Australia
15 x 6.3 x 5 cm (Author: Don Lum)
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Opal
Queensland, Australia
15 x 6.3 x 5 cm
ex-Bill Rudner.
Way back when, a person could stop by Chris Wright’s place in Hot Springs and go through a bin with boulder opal rough. It was sold by the pound. That was okay because about 99.99% of it was ironstone matrix. I suspect that possibly as many as a dozen people have high-graded it before it got to the bin but every now and again Chris would put back a piece for that special person. Unfortunately, more often than not, I was usually not that person. (Author: Don Lum)
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