-
Dolomite and Quartz
Shangbao Mine, Leiyang, Hengyang Prefecture, Hunan Province, China
85 X 70 mm (Author: Manuel Mesa)Dolomite and Quartz
Shangbao M -
Dolomite and Smithsonite
Montdardier, Le Vigan, Gard Department, Occitanie, France
fov 2.2 mm (Author: ploum)Dolomite and Smithsonite
Montd -
Dolomite on Fluorite
Moscona Mine, El Llano, SolĂs, Corvera de Asturias, Comarca AvilĂ©s, Principality of Asturias (Asturias), Spain
58x35x23 mm (Author: steven calamuci)Dolomite on Fluorite
Moscona M -
Dolomite on Fluorite
Moscona Mine, El Llano, SolĂs, Corvera de Asturias, Comarca AvilĂ©s, Principality of Asturias (Asturias), Spain
Detail (Author: Firmo Espinar)Dolomite on Fluorite
Moscona M -
Dolomite on Fluorite
Moscona Mine, El Llano, SolĂs, Corvera de Asturias, Comarca AvilĂ©s, Principality of Asturias (Asturias), Spain
13 x 15 x 5 cm (Author: Firmo Espinar)Dolomite on Fluorite
Moscona M -
Dolomite on Fluorite
Moscona Mine, El Llano, SolĂs, Corvera de Asturias, Comarca AvilĂ©s, Principality of Asturias (Asturias), Spain
13 x 15 x 5 cm (Author: Firmo Espinar)Dolomite on Fluorite
Moscona M -
Dolomite on Fluorite
Yongping Mine, Yongping, Yanshan, Shangrao Prefecture, Jiangxi Province, China
FoV ca. 1,5 x 2 cm (Author: Volkmar Stingl)Dolomite on Fluorite
Yongping -
Dolomite on Galena and Chalcopyrite. Boldut Mine, Cavnic, Maramures, Rumania. 90 x 70 mm (Author: nurbo)
Dolomite on Galena and Chalcopyrit
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Dolomite on Galena and Chalcopyrite. Boldut Mine, Cavnic, Maramures, Rumania. FOV 15 x 10 mm approx. (Author: nurbo)
Dolomite on Galena and Chalcopyrit
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Dolomite on Galena and Chalcopyrite. Boldut Mine, Cavnic, Maramures, Rumania. FOV 25 x 20 mm approx. (Author: nurbo)
Dolomite on Galena and Chalcopyrit
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Dolomite on Galena and Chalcopyrite. Boldut Mine, Cavnic, Maramures, Rumania. 90 x 70 mm (Author: nurbo)
Dolomite on Galena and Chalcopyrit
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Dolomite on Galena, Pyrite and Chalcopyrite.(Showing the white dusty stuff) Boldut Mine, Cavnic, Maramures, Rumania. FOV 20 x 20 mm approx (Author: nurbo)
Dolomite on Galena, Pyrite and Cha
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Dolomite on Galena, Pyrite and Chalcopyrite. Boldut Mine, Cavnic, Maramures, Rumania. FOV 25 x 20 mm approx (Author: nurbo)
Dolomite on Galena, Pyrite and Cha
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Dolomite on quartz. Vug size 14cm. wide. Fonda NY. (Author: vic rzonca)
Dolomite on quartz. Vug size 14cm.
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Dolomite on Quartz
Harrodsburg area, Clear Creek Township, Monroe County, Indiana, USA
Geode cavity is 4 cm (Author: Bob Harman)Dolomite on Quartz
Harrodsburg -
Dolomite on Quartz
Harrodsburg area, Clear Creek Township, Monroe County, Indiana, USA
geode cavity is about 15 cm (Author: Bob Harman)Dolomite on Quartz
Harrodsburg -
Dolomite on Quartz
State Route 56 road cut, Canton, Washington County, Indiana, USA
Geode cavity is about 11 cm. (Author: Bob Harman)Dolomite on Quartz
State Route -
dolomite on sphalerite on dolomite
State Route 56 road cut, Canton, Washington County, Indiana, USA
geode is 5 cm, the sphalerite is 3.3 cm (Author: Bob Harman)dolomite on sphalerite on dolomite
State Route 56 road cut, Canton, Washington County, Indiana -
dolomite on sphalerite on dolomite
State Route 56 road cut, Canton, Washington County, Indiana, USA
both geodes are about 5 cm and both sphalerites ar (Author: Bob Harman)dolomite on sphalerite on dolomite
State Route 56 road cut, Canton, Washington County, Indiana -
Dolomite ps. after Calcite
Elzing Quarry, Elzing, Chemnitz, Saxony/Sachsen, Germany
4.4 x 3.5 x 2.5 cm (Author: Michael Shaw)Dolomite ps. after Calcite
Elz -
Dolomite ps. after halite Fairview, Major County, Oklahoma, USA 6.5 x 7.4 cm (Author: crosstimber)
Dolomite ps. after halite Fairview
-
Dolomite ps. after Siderite
Ringenwechsel Mining District, Troi, District Schwaz, Inn Valley, North Tyrol, Tyrol/Tirol, Austria
FoV ca. 4 x 3 cm (Author: Volkmar Stingl)Dolomite ps. after Siderite
Ri -
Dolomite ps. calcite Droujba Mine, Laki District, Plovdiv Oblast, Bulgaria 6.1 x 7.9 cm. Scalenohedral calcite crystals to 3.5 cm replaced by sugary-textured light tan dolomite. (Author: crosstimber)
Dolomite ps. calcite Droujba Mine,
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Dolomite ps. calcite Droujba Mine, Laki District, Plovdiv Oblast, Bulgaria 3.5 x 6.0 cm. A bowtie group of doubly terminated calcites replaced by light tan dolomite on a little quartz matrix. (Author: crosstimber)
Dolomite ps. calcite Droujba Mine,
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Dolomite ps. calcite Govedarnika Mine, Laki District, Plovdiv Oblast, Bulgaria 8.0 x 10.0 cm. (Author: crosstimber)
Dolomite ps. calcite Govedarnika M
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Dolomite pseudomorph after ???? calcite/smithsonite Tsumeb, Namibia 3 cm f.o.v. I call it "the steamboat" (Author: Herman van Dennebroek)
Dolomite pseudomorph after ???? ca
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Dolomite pseudomorph after aragonite Cottonwood Draw, Chaves Co., New Mexico, USA 7,5 x 6 x 5 cm Grainy dolomite after a cyclic twin of aragonite, well, several twins. (Author: Antonio Alcaide)
Dolomite pseudomorph after aragoni
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Dolomite rhombohedrons covered with calcite and additional quartz
Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District, Kosovo
7.0 x 6.0 x 6.0 cm (Author: Don Lum)Dolomite rhombohedrons covered with calcite and additional quartz
Trepča Complex, Trepča Valley, Kosovska Mitrovica, -
Dolomite rhombs with minor pyrite on quartz from Unser Fritz mine, Wanne-Eickel, Westphalia. Sample width: 7 cm. (Author: Andreas Gerstenberg)
Dolomite rhombs with minor pyrite
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Dolomite Trimouns Luzenac,AriĂšge, France. 3cm (Author: parfaitelumiere)
Dolomite Trimouns
3cm -
Dolomite var. cobaltoan dolomite Alte Lurzenbach mine, Gosenbach, Siegerland, Northrhine-Westphalia, Germany 5 x 4 cm (Author: Andreas Gerstenberg)
Dolomite var. cobaltoan dolomite A
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Dolomite with Carbonate Beckermet Mine, Egremont, Cumbria, England, UK 5 x 3.5 x 2 cm Showing Greenbank label with tabular Baryte (Author: nurbo)
Dolomite with Carbonate Beckermet
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Dolomite with Carbonate Beckermet Mine, Egremont, Cumbria, England, UK 5 x 3.5 x 2 cm (Author: nurbo)
Dolomite with Carbonate Beckermet
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Dolomite with Chalcopyrite
AVE Railway works outcrop, Buiza, La Pola de Gordón, Comarca Montaña Central, León, Castile and León, Spain
25mm x 40mm x 16mm (Author: Firmo Espinar)Dolomite with Chalcopyrite
AVE -
Dolomite with Malachite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
6.1 x 7.7 cm (Author: crosstimber)Dolomite with Malachite
Tsumeb -
Dolomite with Mimetite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
6.1 x 7.7 cm (Author: crosstimber)Dolomite with Mimetite
Tsumeb -
Dolomite with Svanbergite
Mount Brussilof Mine, Radium Hot Springs, Golden Mining Division, British Columbia, Canada
6x3.5x4.1 cm''s (Author: Joseph DOliveira)Dolomite with Svanbergite
Moun -
Dolomite, Calcite and iron oxides
State Route 1 road cut, Woodbury, Cannon County, Tennessee, USA
2 1/2x 1 1/2in. (Author: jordanlowe1089)Dolomite, Calcite and iron oxides
State Route 1 road cut, Woodbury, Cannon County, Tennessee, -
Dolomite, Calcite and iron oxides
State Route 1 road cut, Woodbury, Cannon County, Tennessee, USA
2 1/2x 1 1/2in. (Author: jordanlowe1089)Dolomite, Calcite and iron oxides
State Route 1 road cut, Woodbury, Cannon County, Tennessee, -
Dolomite, Calcite and iron oxides
State Route 1 road cut, Woodbury, Cannon County, Tennessee, USA
2 1/2x 1 1/2in. (Author: jordanlowe1089)Dolomite, Calcite and iron oxides
State Route 1 road cut, Woodbury, Cannon County, Tennessee, -
Dolomite, Calcite, Barite on Quartz
Monroe Reservoir spillway, Monroe County, Indiana, USA
geode cavity is 13 cm (Author: Bob Harman)Dolomite, Calcite, Barite on Quartz
Monroe Reservoir spillway, Monroe County, Indian -
Dolomite, Calcite, Barite on Quartz
Monroe Reservoir spillway, Monroe County, Indiana, USA
see ruler for scale; the larger example is 23 cm w (Author: Bob Harman)Dolomite, Calcite, Barite on Quartz
Monroe Reservoir spillway, Monroe County, Indian -
Dolomite, Calcite, Pyrite
Muzo mining district, Western Emerald Belt, BoyacĂĄ Department, Colombia
123x82x39mm (Author: Fiebre Verde)Dolomite, Calcite, Pyrite
Muzo -
Dolomite, Calcite, Pyrite
Muzo mining district, Western Emerald Belt, BoyacĂĄ Department, Colombia
123x82x39mm (Author: Fiebre Verde)Dolomite, Calcite, Pyrite
Muzo -
Dolomite, Calcite, Pyrite
Muzo mining district, Western Emerald Belt, BoyacĂĄ Department, Colombia
123x82x39mm (Author: Fiebre Verde)Dolomite, Calcite, Pyrite
Muzo -
Dolomite, Calcite, Pyrite
Muzo mining district, Western Emerald Belt, BoyacĂĄ Department, Colombia
123x82x39mm (Author: Fiebre Verde)Dolomite, Calcite, Pyrite
Muzo -
Dolomite, Calcite, Pyrite
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, BoyacĂĄ Department, Colombia
19 x 11 x 8 cm (Author: Bergur_E_Sigurdarson)Dolomite, Calcite, Pyrite
Chiv -
Dolomite, Calcite, Pyrite
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, BoyacĂĄ Department, Colombia
19 x 11 x 8 cm (Author: Bergur_E_Sigurdarson)Dolomite, Calcite, Pyrite
Chiv -
Dolomite, Calcite, Quartz
State Route 1 road cut, Woodbury, Cannon County, Tennessee, USA
75x79mm (Author: jordanlowe1089)Dolomite, Calcite, Quartz
Stat -
Dolomite, Calcite, Quartz
Monte Cristo Mine, Rush, Rush Creek District, Marion County, Arkansas, USA
67mm x 48mm x 37mm (Author: Don Lum)Dolomite, Calcite, Quartz
Mont -
Dolomite, Calcite
State Route 1 road cut, Woodbury, Cannon County, Tennessee, USA
17 x 33 mm. (Author: jordanlowe1089)Dolomite, Calcite
State Route -
Dolomite, Calcite
Chivor mining district, Piedra de Chulo Mine, Municipio Chivor, Eastern Emerald Belt, BoyacĂĄ Department, Colombia
15cm across (Author: Fiebre Verde)Dolomite, Calcite
Chivor minin -
Dolomite, Calcite
Ringenwechsel Mining District, Troi, District Schwaz, Inn Valley, North Tyrol, Tyrol/Tirol, Austria
8,5 x 6 cm (Author: Volkmar Stingl)Dolomite, Calcite
Ringenwechse -
Dolomite, Calcite
Monte Cristo Mine, Rush, Rush Creek District, Marion County, Arkansas, USA
84 mm x 55 mm x 45 mm (Author: Don Lum)Dolomite, Calcite
Monte Cristo -
Dolomite, Calcite
Monte Cristo Mine, Rush, Rush Creek District, Marion County, Arkansas, USA
84 mm x 55 mm x 45 mm (Author: Don Lum)Dolomite, Calcite
Monte Cristo -
Dolomite, Calcite
Monte Cristo Mine, Rush, Rush Creek District, Marion County, Arkansas, USA
84 mm x 55 mm x 45 mm (Author: Don Lum)Dolomite, Calcite
Monte Cristo -
Dolomite, Calcite
Campiano Mine, Montieri, Grosseto Province, Tuscany, Italy
82 mm x 52 mm x 42 mm (Author: Firmo Espinar)Dolomite, Calcite
Campiano Min -
Dolomite, chalcopyrite Vereinigung mine, Katzwinkel, Siegerland, Rhineland-Palatinate, Germany 8 x 5 cm (Author: Andreas Gerstenberg)
Dolomite, chalcopyrite Vereinigung
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Dolomite, Chalcopyrite, Baryte
Dreislar Mine, Dreislar, Winterberg, Sauerland, North Rhine-Westphalia/Nordrhein-Westfalen, Germany
11 x 8 cm (Author: Andreas Gerstenberg)Dolomite, Chalcopyrite, Baryte
Dreislar Mine, Dreislar, Winterberg, Sauerland, North Rhine-Westphalia/Nordrhein-Westfalen, German -
Dolomite, Chalcopyrite, Malachite
Kamsdorf, Unterwellenborn, Saalfeld-Rudolstadt District, Thuringia/ThĂŒringen, Germany
6 x 4 cm (Author: Volkmar Stingl)Dolomite, Chalcopyrite, Malachite
Kamsdorf, Unterwellenborn, Saalfeld-Rudolstadt District, Thuringia/ThĂŒringen, Ger -
Dolomite, Chalcopyrite, Malachite
Kamsdorf, Unterwellenborn, Saalfeld-Rudolstadt District, Thuringia/ThĂŒringen, Germany
6 x 4 cm (Author: Volkmar Stingl)Dolomite, Chalcopyrite, Malachite
Kamsdorf, Unterwellenborn, Saalfeld-Rudolstadt District, Thuringia/ThĂŒringen, Ger -
Dolomite, Chalcopyrite
Picher Field, Tri-State District, Ottawa County, Oklahoma, USA
150 X 90 X 35 (Author: Robert Seitz)Dolomite, Chalcopyrite
Picher -
Dolomite, Chalcopyrite
Picher Field, Tri-State District, Ottawa County, Oklahoma, USA
150 X 90 X 35 mm (Author: Robert Seitz)Dolomite, Chalcopyrite
Picher -
Dolomite, Chalcopyrite
Vereinigung Mine, Katzwinkel, Altenkirchen (Westerwald), Siegerland, Rhineland-Palatinate/Rheinland-Pfalz, Germany
Approx. 18 cm (Author: Tobi)Dolomite, Chalcopyrite
Vereini -
Dolomite, Chalkopyrite
Magnesite deposit, Sunk, Niedere Tauern, Styria/Steiermark, Austria
8 x 5 cm (Author: Volkmar Stingl)Dolomite, Chalkopyrite
Magnesi -
Dolomite, Dravite-Schorl Series
Minas da Panasqueira, Aldeia de SĂŁo Francisco de Assis, CovilhĂŁ, Castelo Branco, Cova da Beira, Centro, Portugal
11 cm x 7 cm x 3 cm (Author: silvia)Dolomite, Dravite-Schorl Series
Minas da Panasqueira, Aldeia de SĂŁo Francisco de Assis, CovilhĂŁ, Castelo Branco, Cova da Beira, Centro, Portug -
Dolomite, Fluorite
Yongping Mine, Yongping, Yanshan, Shangrao Prefecture, Jiangxi Province, China
7 x 6,5 cm (Author: Volkmar Stingl)Dolomite, Fluorite
Yongping Mi -
Dolomite, Hematite
Florence Mine, Egremont, West Cumberland Iron Field, former Cumberland, Cumbria, England / United Kingdom
Specimen size 12 cm, largest dolomite crystals 7 m (Author: Tobi)Dolomite, Hematite
Florence Mi -
Dolomite, Hematite
Florence Mine, Egremont, West Cumberland Iron Field, former Cumberland, Cumbria, England / United Kingdom
Specimen size 12 cm, largest dolomite crystals 7 m (Author: Tobi)Dolomite, Hematite
Florence Mi -
Dolomite, Hemimorphite, Mimetite San Antonio Mine (San Antonio el Grande Mine), East Camp, Santa Eulalia District, Mun. de Aquiles SerdĂĄn, Chihuahua, Mexico 148.0 x 80.0 x 40.0 mm Striking specimen of opaque cream-colored rhombs of Dolomite to 2.1 cm nicely perched on limonitic matrix. The Calcite crystals partly engulf glassy Hemimorphite crystals to 1 cm in length. Translucent yellowish Mimetite in spherical crystal aggregates to 3 mm are perched on both Hemimorphite and Calcite crystals. Some Hemimorphite crystals are broken where they emerge from the enclosing Calcite crystals, but they are not distracting. Otherwise, there is no damage. (Author: GneissWare)
Dolomite, Hemimor
San Antonio Mine -
Dolomite, magnesite Eugui, Navarra, Spain fov 40 mm (Author: ploum)
Dolomite, magnesite Eugui, Navarra
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Dolomite, Marcasite
Albvorlandtunnel, Wendlingen, Esslingen District, Stuttgart Region, Baden-WĂŒrttemberg, Germany
5 x 5 cm (Author: Volkmar Stingl)Dolomite, Marcasite
Albvorland -
Dolomite, Marcasite
Albvorlandtunnel, Wendlingen, Esslingen District, Stuttgart Region, Baden-WĂŒrttemberg, Germany
5 x 5 cm (Author: Volkmar Stingl)Dolomite, Marcasite
Albvorland -
Dolomite, Muscovite, Pyrite
Devero Alp, Baceno, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
87 x 47 mm (Author: Sante Celiberti)Dolomite, Muscovite, Pyrite
De -
Dolomite, Muscovite, Pyrite
Devero Alp, Baceno, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
87 x 47 mm (Author: Sante Celiberti)Dolomite, Muscovite, Pyrite
De -
Dolomite, Ober and Binkly quarry, East Petersburg, Lancaster Co., 10 cm across. (Author: John S. White)
Dolomite, Ober and Binkly quarry,
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Dolomite, pyrite GrĂŒner Löwe mine, Gosenbach, Siegerland, Northrhine-Westphalia, Germany 12 x 8 cm (Author: Andreas Gerstenberg)
Dolomite, pyrite GrĂŒner Löwe mine,
-
Dolomite, Pyrite, Calcite, Quartz Qale-Zari Mine, South Khorasan Province, eastern Iran FOV is 8.5 cm. (Author: vhairap)
Dolomite, Pyrite, Calcite, Quartz
-
Dolomite, Pyrite, Calcite, Quartz Qale-Zari Mine, South Khorasan Province, eastern Iran FOV is 5 cm. (Author: vhairap)
Dolomite, Pyrite, Calcite, Quartz
-
Dolomite, Pyrite, Calcite, Quartz Qale-Zari Mine, South Khorasan Province, eastern Iran FOV is 8.5 cm. (Author: vhairap)
Dolomite, Pyrite, Calcite, Quartz
-
Dolomite, Pyrite, Calcite, Quartz Qale-Zari Mine, South Khorasan Province, eastern Iran FOV is 12 cm. (Author: vhairap)
Dolomite, Pyrite, Calcite, Quartz
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Dolomite, Pyrite, Calcite, Quartz Qale-Zari Mine, South Khorasan Province, eastern Iran Size is 19.3 cm in length. (Author: vhairap)
Dolomite, Pyrite, Calcite, Quartz
-
Dolomite, Pyrite
Eugui, EsterĂbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
78mm x 34mm x 47mm (Author: Firmo Espinar)Dolomite, Pyrite
Eugui, EsterĂ -
Dolomite, Pyrite
Eugui, EsterĂbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
78mm x 34mm x 47mm (Author: Firmo Espinar)Dolomite, Pyrite
Eugui, EsterĂ -
Dolomite, Pyrite
Eugui, EsterĂbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
78mm x 34mm x 47mm (Author: Firmo Espinar)Dolomite, Pyrite
Eugui, EsterĂ -
Dolomite, Quartz
Brumado, Bahia, Northeast Region, Brazil
5.5 x 3.7 cm (Author: Don Lum)Dolomite, Quartz
Brumado, Bahi -
Dolomite, Quartz
Brumado, Bahia, Northeast Region, Brazil
5.5 x 3.7 cm (Author: Don Lum)Dolomite, Quartz
Brumado, Bahi -
Dolomite, Quartz
Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District, Kosovo
220 x 155 x 60 mm (Author: Rob Schnerr)Dolomite, Quartz
Stan Trg (Sta -
Dolomite, Quartz
Campiano Mine, Montieri, Grosseto Province, Tuscany, Italy
21,5 x 11,5 cm (Author: Sante Celiberti)Dolomite, Quartz
Campiano Mine -
Dolomite, Quartz
Campiano Mine, Montieri, Grosseto Province, Tuscany, Italy
21,5 x 11,5 cm (Author: Sante Celiberti)Dolomite, Quartz
Campiano Mine -
Dolomite, Quartz
Yongping Mine, Yongping, Yanshan, Shangrao Prefecture, Jiangxi Province, China
6,5 x 4,5 cm (Author: Volkmar Stingl)Dolomite, Quartz
Yongping Mine -
Dolomite, Siderite and Quartz
Otanche, Occidente Province, BoyacĂĄ Department, Colombia
72mm x 58mm x 45mm (Author: Firmo Espinar)Dolomite, Siderite and Quartz
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Dolomite, Siderite and Quartz
Otanche, Occidente Province, BoyacĂĄ Department, Colombia
72mm x 58mm x 45mm (Author: Firmo Espinar)Dolomite, Siderite and Quartz
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Dolomite, Siderite and Quartz
Otanche, Occidente Province, BoyacĂĄ Department, Colombia
72mm x 58mm x 45mm (Author: Firmo Espinar)Dolomite, Siderite and Quartz
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Dolomite-Sphalerite
Bou Bekker, Touissit District, Jerada Province, Oriental Region, Morocco
10 cm x 11 cm (Author: Enrique Llorens)Dolomite-Sphalerite
Bou Bekker -
Dolomite. La Florida Mine. Cantabria. Spain. 6 cm (Author: nimfiara)
Dolomite. La Florida Mine. Cantabr
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Dolomite. Setiles. Guadalajara. Castilla La Mancha. Spain. 11 cm (Author: nimfiara)
Dolomite. Setiles. Guadalajara. C
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Dolomite Corydon, Indiana USA (Author: llamabox)
Dolomite
Corydon, Indiana -
Dolomite Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; CarriÚre Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada FOV=4mm (Author: Doug)
Dolomite
Poudrette quarry -
Dolomite Traversella Mine, Traversella, Chiusella Valley, Canavese District, Torino Province, Piedmont, Italy Dolomite group of 35 mm (Author: Matteo_Chinellato)
Dolomite
Traversella Mine, -
Dolomite Traversella Mine, Traversella, Chiusella Valley, Canavese District, Torino Province, Piedmont, Italy Dolomite of 18x14 mm (Author: Matteo_Chinellato)
Dolomite
Traversella Mine, -
Dolomite
La Cena del DepĂłsito Claim, HuĂ©rcal-Overa, Comarca Levante Almeriense, AlmerĂa, Andalusia, Spain
FOV 22 mm (Author: Firmo Espinar)Dolomite
La Cena del DepĂłsito -
Dolomite
La Cena del DepĂłsito Claim, HuĂ©rcal-Overa, Comarca Levante Almeriense, AlmerĂa, Andalusia, Spain
FOV 7 mm (Author: Firmo Espinar)Dolomite
La Cena del DepĂłsito -
Dolomite
Ben Hogan Quarry, Black Rock, Lawrence County Zinc District, Lawrence County, Arkansas, USA
9.0 x 9.5 cm (Author: crosstimber)Dolomite
Ben Hogan Quarry, Bla -
Dolomite
Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District, Kosovo
4.0 x 4.7 cm (Author: crosstimber)Dolomite
Trepča Complex, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100 (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100m (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100m (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
330x250x100mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
State Route 1 road cut, Woodbury, Cannon County, Tennessee, USA
67x60mm (Author: jordanlowe1089)Dolomite
State Route 1 road cu -
Dolomite
Magnesite deposit, Sunk, Niedere Tauern, Styria/Steiermark, Austria
95 mm (Author: Gerhard Brandstetter)Dolomite
Magnesite deposit, Su -
Dolomite
Picher Field, Tri-State District, Ottawa County, Oklahoma, USA
125 X 70 X 90 mm (Author: Robert Seitz)Dolomite
Picher Field, Tri-Sta -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
5.4 x 8.0 cm (Author: crosstimber)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
130mmx45mmx65mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
130mmx45mmx65mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
130mmx45mmx65mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
130mmx45mmx65mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
130mmx45mmx65mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
35mmx18mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
AzcĂĄrate Quarry, Eugui, EsterĂbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
142 X 105 mm (Author: Manuel Mesa)Dolomite
AzcĂĄrate Quarry, Eug -
Dolomite
Timmins area, Cochrane District, Ontario, Canada
1.8 x 2.3 cm (Author: crosstimber)Dolomite
Timmins area, Cochran -
Dolomite
AzcĂĄrate Quarry, Eugui, EsterĂbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
72 x 47 mm (Author: Manuel Mesa)Dolomite
AzcĂĄrate Quarry, Eug -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
6.0 x 8.7 cm (Author: crosstimber)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
6.0 x 8.7 cm (Author: crosstimber)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
5.9 x 6.8 cm (Author: crosstimber)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
5.9 x 6.8 cm (Author: crosstimber)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
4.0 x 4.5 cm (Author: crosstimber)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
6.1 x 7.7 cm (Author: crosstimber)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
6.1 x 7.7 cm (Author: crosstimber)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Lake Meredith, Sanford, Texas Panhandle, Texas, USA
15x12x11cm (Author: Dale Hallmark)Dolomite
Lake Meredith, Sanfor -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
157mm x 82mm x 32mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
157mm x 82mm x 32mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
157mm x 82mm x 32mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
157mm x 82mm x 32mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
70mm x 52mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
70mm x 52mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
62mm x 64mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
62mm x 64mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Asturreta Quarry, Eugui, EsterĂbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
8 x 8 x 7 cm (Author: James)Dolomite
Asturreta Quarry, Eug -
Dolomite
Bautenberg Mine, Wilden, Wilnsdorf, Siegen-Wittgenstein District, Arnsberg, Rhineland-Palatinate/Rheinland-Pfalz, Germany
7 x 4,5 cm (Author: Andreas Gerstenberg)Dolomite
Bautenberg Mine, Wild -
Dolomite
GlĂŒcksbrunn, Schweina, Bad Liebenstein, Wartburgkreis District, Thuringia/ThĂŒringen, Germany
7 x 6 cm (Author: Andreas Gerstenberg)Dolomite
GlĂŒcksbrunn, Schwein -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
74mm x 40mm x 26mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
97mm x 105mm x 18mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
97mm x 105mm x 18mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
72mm x 58mm x 10mm (Author: Heimo Hellwig)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Huanggang Mines, Hexigten Banner (KĂšshĂkĂštĂ©ng QĂ), Chifeng (Ulanhad), Inner Mongolia Autonomous Region, China
9x9x7 cm (Author: Joseph DOliveira)Dolomite
Huanggang Mines, Hexi -
Dolomite
Bou Bekker, Touissit District, Jerada Province, Oriental Region, Morocco
8 cm. x 7 cm. (Author: Enrique Llorens)Dolomite
Bou Bekker, Touissit -
Dolomite
Red Cloud Mine, Rush Creek District, Marion County, Arkansas, USA
80 mm x 70 mm x 40 mm (Author: Don Lum)Dolomite
Red Cloud Mine, Rush -
Dolomite
Walser Quarry, Silz, Imst District, North Tyrol, Tyrol/Tirol, Austria
8 x 6 cm (Author: Volkmar Stingl)Dolomite
Walser Quarry, Silz, -
Dolomite
Albvorlandtunnel, Wendlingen, Esslingen District, Stuttgart Region, Baden-WĂŒrttemberg, Germany
12 x 10 cm (Author: Volkmar Stingl)Dolomite
Albvorlandtunnel, Wen -
Dolomite
Albvorlandtunnel, Wendlingen, Esslingen District, Stuttgart Region, Baden-WĂŒrttemberg, Germany
12 x 10 cm (Author: Volkmar Stingl)Dolomite
Albvorlandtunnel, Wen -
Dolomite
Albvorlandtunnel, Wendlingen, Esslingen District, Stuttgart Region, Baden-WĂŒrttemberg, Germany
7,5 x 5 cm (Author: Volkmar Stingl)Dolomite
Albvorlandtunnel, Wen -
Dolomite
El Almendral Quarry, Road to Berja, Berja, Comarca Poniente Almeriense, AlmerĂa, Andalusia, Spain
105mm x 110mm x 70mm (Author: Firmo Espinar)Dolomite
El Almendral Quarry, -
Dolomite
Albvorlandtunnel, Wendlingen, Esslingen District, Stuttgart Region, Baden-WĂŒrttemberg, Germany
5 x 4,5 cm (Author: Volkmar Stingl)Dolomite
Albvorlandtunnel, Wen -
Dolomite
Albvorlandtunnel, Wendlingen, Esslingen District, Stuttgart Region, Baden-WĂŒrttemberg, Germany
5 x 4,5 cm (Author: Volkmar Stingl)Dolomite
Albvorlandtunnel, Wen -
Dolomite
Coleman Mine, Levack Township, Sudbury District, Ontario, Canada
2.8x3.2x2 cm''s (Author: Joseph DOliveira)Dolomite
Coleman Mine, Levack -
Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
3.8 x 2.7 cm (Author: Michael Shaw)Dolomite
Tsumeb Mine, Tsumeb, -
Dolomite
Asturreta Quarry, Eugui, EsterĂbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
13 x 12 x 13.5 cm (Author: MIM Museum)Dolomite
Asturreta Quarry, Eug -
Dolomite
Ringenwechsel Mining District, Troi, District Schwaz, Inn Valley, North Tyrol, Tyrol/Tirol, Austria
8 x 7 cm (Author: Volkmar Stingl)Dolomite
Ringenwechsel Mining -
Dolomite
Ringenwechsel Mining District, Troi, District Schwaz, Inn Valley, North Tyrol, Tyrol/Tirol, Austria
8 x 7 cm (Author: Volkmar Stingl)Dolomite
Ringenwechsel Mining -
Dolomite
AzcĂĄrate Quarry, Eugui, EsterĂbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
33 x 23.5 x 13.5 cm / main crystal: 8.4 cm (Author: MIM Museum)Dolomite
AzcĂĄrate Quarry, Eug -
Dolomite
Fairview, Major County, Oklahoma, USA
10.2 x 6.8 x 5.4 cm (Author: Michael Shaw)Dolomite
Fairview, Major Count -
Dolostone and silica. (Author: vic rzonca)
Dolostone and silica.
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Don Davis, a long time member of the Connecticut Valley Mineral Club. Don is eighty seven years old, and he can kick the crap out of me and five other men or boys when it comes to moving rock. He puts us to shame, the old goat. (Author: vic rzonca)
Don Davis, a long time member of t
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Don’t laugh - it took hours panning in a stream to get this speck of Gold -got eaten alive by Bulgarian Mozzies....... (Author: Colleen Thomson)
Don’t laugh - it took hours
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Donnayite-(Y) Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; CarriÚre Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada FOV=4mm (Author: Doug)
Donnayite-(Y)
Poudrette quarry -
Donnayite-(Y)
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
4 x 3 x 2 cm / main crystal: 1.8 cm (Author: MIM Museum)Donnayite-(Y)
Poudrette Quarry -
Donnayite-(Y)
Semmering basis tunnel, Gloggnitz, Neunkirchen District, Lower Austria/Niederösterreich, Austria
FoV ca. 1 x 1,5 cm (Author: Volkmar Stingl)Donnayite-(Y)
Semmering basis -
Double geode of azurite/malachite (3.2 x 1.7 x 0.5 cm) from Inyo Co., California, USA, purchased from Rob Lavinsky (Author: Linda St-Cyr)
Double geode of azurite/malachite
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Double terminated,measures about 17 x 12 mm (Author: nurbo)
Double terminated,measures about 1
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Double terminated, naturally etched morganite crystal, from Oceanview mine (Oceanview adit), Elizabeth R. Mine (Hazel W. claim), Chief Mountain, Pala, Pala District, San Diego Co., California, USA Size 42 x 35 x 25 mm (Author: olelukoe)
Double terminated
Size 42 x 35 x 2 -
Double terminated tourmaline crystal Himalaya Mine, Mesa Grande District, San Diego Co., California Specimen size 5.5 x 2.9 cm. (Author: am mizunaka)
Double terminated
Himalaya Mine, Me -
Double-generation calcite, San Antonio El Grande, Chihuahua Mexico. Size: 7cm. (Author: javmex2)
Double-generation calcite, San Ant
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Doubly terminated Quartz with Chlorite inclusions
Diamantina, Vale do Jequitinhonha, Minas Gerais, Brazil
28,5 x 3,5 x 3,0 cm (Author: MIM Museum)Doubly terminated Quartz with Chlorite inclusions
Diamantina, Vale do Jequitinhonha, -
Doubly terminated Calcite Berry Materials quarry, North Vernon, Indiana, USA Specimen size: 4.2 Ă 6.5 cm. Photo: Reference Specimens (Author: Jordi Fabre)
Doubly terminated
Berry Materials q -
Doyleite, Gibbsite
Baoshan Prefecture, Yunnan Province, China
95 x 60 x 25 mm (Author: Rob Schnerr)Doyleite, Gibbsite
Baoshan Pre -
Doyleite-Gibbsite Baoshan.jpg (Author: Jordi Fabre)
Doyleite-Gibbsite Baoshan.jpg
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Dravite HĂŒttermĂŒhle, Radeberg, Dresden, Saxony, Germany. 8 x 2,5 cm (Author: Andreas Gerstenberg)
Dravite HĂŒttermĂŒhle, Radeberg, Dre
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Dravite HĂŒttermĂŒhle, Radeberg, Upper Lusatia, Saxony, Germany 7 x 2,5 cm (Author: Andreas Gerstenberg)
Dravite HĂŒttermĂŒhle, Radeberg, Upp
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Dravite Soklich Open Cut, Yinnietharra Station, Pilbara Region, Western Australia, Australia 66 mm x 53 mm x 52 mm (Author: Carles Millan)
Dravite Soklich Open Cut, Yinnieth
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Dravite Soklich Open Cut, Yinnietharra Station, Pilbara Region, Western Australia, Australia 66 mm x 53 mm x 52 mm (Author: Carles Millan)
Dravite Soklich Open Cut, Yinnieth
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Dravite Soklich Open Cut, Yinnietharra Station, Pilbara Region, Western Australia, Australia 66 mm x 53 mm x 52 mm (Author: Carles Millan)
Dravite Soklich Open Cut, Yinnieth
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Dravite Soklich Open Cut, Yinnietharra Station, Pilbara Region, Western Australia, Australia 66 mm x 53 mm x 52 mm (Author: Carles Millan)
Dravite Soklich Open Cut, Yinnieth
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Dravite (Tourmaline Group)
Landanai, Arusha Region, Tanzania
35 mm x 29 mm x 20 mm (Author: Don Lum)Dravite (Tourmaline Group)
Lan -
Dravite (Tourmaline Group)
Plateau Rosa Pass, Breuil-Cervinia, Valtournenche, Aosta Valley (Val d'Aosta), Italy
78,4 x 72,8 mm (Author: Sante Celiberti)Dravite (Tourmaline Group)
Pla -
Dravite (Tourmaline Group)
Beura Quarries, Beura-Cardezza, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
132 x 98 mm (Author: Sante Celiberti)Dravite (Tourmaline Group)
Beu -
Dravite (Tourmaline Group)
Beura Quarries, Beura-Cardezza, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
80 x 77 mm (Author: Sante Celiberti)Dravite (Tourmaline Group)
Beu -
Dravite (Tourmaline Group)
Minas Gerais, Brazil
22mm x 34mm x 20mm (Author: Firmo Espinar)Dravite (Tourmaline Group)
Min -
Dravite in marble Texas quarry, Baltimore Co., Maryland, USA 6 cm across (Author: John S. White)
Dravite in marble
Texas quarry, Bal -
Dravite-Schorl Series
Minas da Panasqueira, Aldeia de SĂŁo Francisco de Assis, CovilhĂŁ, Castelo Branco, Cova da Beira, Centro, Portugal
(Author: am mizunaka)Dravite-Schorl Series
Minas da -
Dravite
Jajarkot District, Karnali Pradesh, Nepal
3.3 x 2.8 cm (Author: steven calamuci)Dravite
Jajarkot District, Kar -
Dravite
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
FOV = 4mm (Author: Doug)Dravite
Poudrette Quarry, Mont -
Dravite
May Downs Station, Mount Isa, City of Mount Isa, Queensland, Australia
10.0 x 6.7 cm (Author: am mizunaka)Dravite
May Downs Station, Mou -
Dravite
Beura Quarries, Beura-Cardezza, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
5 x 3,5 cm (Author: Volkmar Stingl)Dravite
Beura Quarries, Beura- -
Dravite
Beura Quarries, Beura-Cardezza, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont (Piemonte), Italy
5 x 3,5 cm (Author: Volkmar Stingl)Dravite
Beura Quarries, Beura- -
Eugui, EsterĂbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre), Spain
15 cm x 8 cm x 5 cm (Author: James Catmur)Drawing by Barbara Stanley
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Drawings of an interpretation of the Alme calcite habit. Top, standard crystallographic orientation. Bottom, view corresponding to Tobias’ photos. (Author: Pete Richards)
Drawings of an interpretation of t
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dreislar.jpg (Author: Tobi)
dreislar.jpg
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Drill workings in an area where blasting will be done in a few days. David Soler photo, September 2005. (Author: Joan Rosell)
Drill workings in an area where bl
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Drillers, San JosĂ© La Rica mine, Real del Monte, Hidalgo, MĂ©xico (1983) FotografĂa: David Maawad, publicada en "Una visiĂłn de la MinerĂa" nĂșm 86 (Author: Luis DomĂnguez)
Drillers, San José La Rica mine, R
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Drillers. San Juan Pachuca Mine, Pachuca, Hidalgo, Mexico (1988) Author: Marco Antonio HernĂĄndez Badillo from the book "Entre la tierra y el aire". Edition: Archivo HistĂłrico y Museo de MinerĂa, A.C. www.distritominero.com (Author: Jordi Fabre)
Drillers. San Juan Pachuca Mine, P
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DRILLING UNDERGROUND In underground mines like Milpillas, specialized long-hole drill equipment was paramount for preparing rock for blasting. These powerful drills created deep, precise boreholes into which explosives were loaded. This allowed for controlled detonation, breaking up the ore body into manageable sizes for extraction, a crucial step in the mine’s production cycle. On a daily basis, miners navigated a subterranean world where the primary target was high-grade Chalcocite, a crucial Copper sulfide ore found within the mine’s extensive enriched blankets. However, earlier operations, before the sulphide zone was reached, brought them face-to-face with a stunning array of secondary Copper minerals, particularly prevalent in the shallower, oxidized zones of the deposit. These encounters routinely included the visually striking blue Azurite and its verdant counterpart, Malachite, which often display intricate intergrowths or even pseudomorphic transformations. Furthermore, the miners commonly observed the lustrous red Cuprite and deposits of glimmering native Copper. While less frequent, other notable green Copper minerals such as Brochantite and the distinctive blue-green Chrysocolla might also be present, alongside occasional rare silicates, painting a vivid picture of the mine’s diverse mineral composition. The mine was well-known for producing exceptionally well-crystallized Volborthite, a rare Copper poly-vanadate, sometimes found on a matrix of Dickite or associated with Azurite and Malachite. The photographs also highlight the relative scarcity of significant âcollector-qualityâ mineralized pockets conducive to specimen collecting. The Milpillas Mine, despite its economic prowess as a Copper producer, wasn’t uniformly âmineralogically richâ in the way some mineral collectors often dream. While extensive zones yielded abundant Copper ore, the frequent discovery of collector-quality Azurite and Malachite vugs, brimming with âsplendentâ crystals, was not an everyday occurrence. Like many commercial mining operations, Milpillas had its hot spots; certain areas provided significant quantities of high-grade Copper ore for the electrolytic plant, while others, some distinct from the primary ore body, provided treasure troves for exceptional mineral specimens. This dichotomy is a common reality in the world of mineral collecting, where the pursuit of stunning crystals often means sifting through vast amounts of economically viable yet aesthetically uninteresting ore. When routine mining operations intersected mineralized veins and vugs, some large, containing exceptional Azurite and Malachite crystals, these occurrences were opportunistically exploited by âsome workersâ as a means of illicit income supplementation. Penoles, the owners and operators of the mine, actively discouraged such unauthorized extraction, enforcing a strict policy of dismissal and potential criminal prosecution for apprehended individuals. Furthermore, any worker implicated in such illicit activities faced industry-wide blacklisting, effectively precluding future employment within the mining sector. Initially, the value of these surreptitiously acquired specimens was nominal, commanding only a few pesos. However, the Internet facilitated a rapid increase in market awareness among the miners, who quickly discerned the substantial value placed on these âcolored rocksâ by International, particularly North American, dealers and collectors. A NOTE ON âTHIS-OR-THAT POCKETâ NOMENCLATURE The use of the term âpocketâ to describe certain Milpillas mineral specimens, particularly in reference to their extraction point, transcends simple geographical identification. These labels, rather than being intrinsic descriptors understood by those who extracted the specimens, were often marketing tools designed to imbue the minerals with a specific allure. Those intimately familiar with the mine’s day-to-day operations understood that such terms were colloquialisms, not reflections of actual geological structures or mining methodology. While official company documents certainly highlighted and celebrated areas with significant mineralization â often featuring stunning, perfectly formed crystals of Azurite, Malachite, and other Copper minerals â they deliberately avoided calling these spots âpockets.â Instead, they used more formal geological terms. Their descriptions focused on the geological structures controlling the mineralization, the types of rocks surrounding the minerals, and their exact mineral makeup. This intentional choice of language pointed to a clear difference between the casual, on-the-ground language used by some of the mine workers who opportunistically and illegally exploited the mineralized zones for personal profit and the precise, scientific terminology preferred in corporate and geological reports. It was likely an effort to keep all official communications consistent and scientifically accurate, ensuring a formal narrative throughout. Original photos courtesy of GonzĂĄlĂ©z SĂĄnchez (Author: silvia)
DRILLING UNDERGROUND In undergro
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Drusy Calcite with Marcasite, from Rayas mine, Guanajuato, Gto. 88 x 70 x 25 mm (Author: Carlos M.)
Drusy Calcite wit
from Rayas mine, -
Drusy pale Amethyst xls on Epidote carpet Cerro De La Concordia, Piedra Parada, Mun. de Tatatila, Veracruz, Mexico 90x55x72mm One of my favorites (Author: Carlos M.)
Drusy pale Amethy
Cerro De La Conco -
Druzy quartz, the other part of the pocket. (Author: vic rzonca)
Druzy quartz, the other part of th
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Hanson Aggregates-Harding Street Quarry, Indianapolis, Marion County, Indiana, USA
largest pyrite nodule is 5cm. (Author: Bob Harman)DSC02054.JPG
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DSC02227.JPG (Author: olelukoe)
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State Route 56 road cut, Canton, Washington County, Indiana, USA
(Author: Bob Harman)DSC02419.JPG
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State Route 56 road cut, Canton, Washington County, Indiana, USA
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State Route 56 road cut, Canton, Washington County, Indiana, USA
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