Mineral Specimens with Calcite

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MD-282257 - Calcite - - Archived
West Camp, Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico
cabinet, 11.8 x 11.2 x 5.4 cm.

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11.8 x 11.2 x 5.4 cm. A striking, complete-all-around, cabinet cluster of lustrous, brown, hematite-tinted, dogtooth calcite crystals from the famed mines at Santa Eulalia. This is a dramatic specimen of intergrown calcite stalactites. Very nearly pristine, except for trivial periphery wear, which is amazing in itself. Classic material. Ex. Evan Jones Mexico Collection.

MD-282263 - Malachite, Calcite - - Archived
Old Dominion Mine (Old Dominion shaft; Globe and Transit Mine; Old Dominion and United Globe Mine), Buffalo Hill, Old Dominion vein system, Globe, Globe Hills, Globe Hills District
cabinet, 10.4 x 6.4 x 5.4 cm.

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10.4 x 6.4 x 5.4 cm. A very fine, old-time, cabinet combination specimen from the famous Old Dominion Mine at Globe, Arizona. Sparkling, emerald-green, primary malachite microcrystals in bubbly, botryoids richly cover the vuggy, gossan matrix. Colorless, glassy calcite rhombs, in a swath or as isolated crystals are a nice accent. But the interesting thing about this piece is the fact that there are two secondary generations of malachite that cover the original primary malachite crystals: lighter green malachite richly scattered throughout; and pastel-green malachite on the fringes. An attractive combination piece from this historic Arizona locale, probably dating to the 1950s or earlier.

MD-282299 - Calcite - - Archived
Webb City, Webb City-Carterville-Prosperity Field, Tri-State District, Jasper Co., Missouri, USA
cabinet, 12.7 x 10.2 x 5.0 cm.

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Calcite from Webb City, Webb City-Carterville-Prosperity Field, Tri-State District, Jasper Co., Missouri, USA [db_pics/mdpics/MD-282299a.jpg]

Calcite from Webb City, Webb City-Carterville-Prosperity Field, Tri-State District, Jasper Co., Missouri, USA [db_pics/mdpics/MD-282299a.jpg]

12.7 x 10.2 x 5.0 cm. A very rare and superb, glassy, amber calcite scalenohedron from the uncommon Webb City Field of the famed Tri-State District. Any material from this historic locale is certainly around 100 years old. This rare, old-time specimen is pristine and the tiny stringers of included marcasite at the base are an interesting accent. Ex. Ed David Collection.

MD-282311 - Calcite, Quartz (Var: Amethyst) - - Archived
Idar-Oberstein, Hunsrück Mts, Rhineland-Palatinate, Germany
large cabinet, 17.0 x 12.2 x 8.8 cm.

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Calcite, Quartz (Var: Amethyst) from Idar-Oberstein, Hunsrück Mts, Rhineland-Palatinate, Germany [db_pics/mdpics/MD-282311a.jpg]

Calcite, Quartz (Var: Amethyst) from Idar-Oberstein, Hunsrück Mts, Rhineland-Palatinate, Germany [db_pics/mdpics/MD-282311a.jpg]

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Calcite, Quartz (Var: Amethyst) from Idar-Oberstein, Hunsrück Mts, Rhineland-Palatinate, Germany [db_pics/mdpics/MD-282311b.jpg]

Calcite, Quartz (Var: Amethyst) from Idar-Oberstein, Hunsrück Mts, Rhineland-Palatinate, Germany [db_pics/mdpics/MD-282311b.jpg]

17.0 x 12.2 x 8.8 cm. This is a fine, dramatic and probably old large cabinet specimen of calcite on amethyst from the ancient workings of quartz in Idar-Oberstein, used for centuries for carving and lapidary art. Still today, the world center of the highest end of the lapidary crafts is based in Idar-Oberstein, though stone to work on is now imported from elsewhere. This is a striking and beautiful pocket in basalt of lightly hematite-tinted amethyst crystals hosting a dense cluster of glassy, colorless calcite crystals to 2.5 cm. Ex. Richard Hauck Quartz Collection.

MD-282330 - Pyrite, Calcite, Fluorite - - Archived
El Hammam Mine (El Hamman Mine), Mount Hammam, Meknès, Meknès Prefecture, Meknès-Tafilalet Region, Morocco
cabinet, 13.9 x 9.9 x 6.8 cm.

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Pyrite, Calcite, Fluorite from El Hammam Mine (El Hamman Mine), Mount Hammam, Meknès, Meknès Prefecture, Meknès-Tafilalet Region, Morocco [db_pics/mdpics/MD-282330a.jpg]

Pyrite, Calcite, Fluorite from El Hammam Mine (El Hamman Mine), Mount Hammam, Meknès, Meknès Prefecture, Meknès-Tafilalet Region, Morocco [db_pics/mdpics/MD-282330a.jpg]

13.9 x 9.9 x 6.8 cm. Lustrous, translucent, sea-green fluorite cubes to 3.7 cm are dramatically and preferentially coated with mirror-bright, brass-yellow pyrite and sparkly, colorless, calcite microcrystals on this fine cabinet specimen from the less well-known El Hammam Mine of Morocco. This mine has produced some unusual and very showy fluorite combination specimens and this piece certainly qualifies. Pristine, except for trivial periphery wear. Weighs 2.9 pounds or 1.3 kilograms.

MD-282344 - Calcite - - Archived
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
small cabinet, 6.0 x 4.7 x 3.2 cm.

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Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-282344a.jpg]

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Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-282344b.jpg]

6.0 x 4.7 x 3.2 cm. Glassy, highly lustrous, intergrown calcite rhombs form a very fine, complete-all-around and pristine knob. This has a very faint pastel color to it. Excellent material from the Tsumeb Mine from the Rob Smith Collection. Bright orangey fluorescence.

MD-282525 - Babingtonite, Calcite, Heulandite-Ca, Quartz - - Archived
Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic Co., New Jersey, USA
miniature, 3.7 x 3.4 x 2.8 cm.

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3.7 x 3.4 x 2.8 cm. The Prospect Park Quarry is one of the most impressive (and under appreciated) Zeolite localities in the world. This quarry has produced some amazing specimens in the last 100 years. This specimen features a few isolated, rare blue-grey crystal groups of Babingtonite (partially altered to some kind of Pyroxene) which are associated with pale golden Calcite plus Heulandite on gem quality Quartz crystals on matrix. The Babingtonites from this locality are very distinctive, and certainly some of the most attractive for the species from the standpoint of the unusual color. Unfortunately, this great New Jersey locality is being filled in for a housing development (like so many of the great Trap Rock localities in this area), and pieces like this one will be never be collected again. A nice looking specimen of this hard to find material.

MD-282577 - Olmiite, Oyelite, Calcite - - Archived
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
miniature, 4.2 x 2.3 x 1.8 cm.

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Olmiite, Oyelite, Calcite from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-282577a.jpg]

Olmiite, Oyelite, Calcite from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-282577a.jpg]

4.2 x 2.3 x 1.8 cm. A sharp, symmetric, lustrous crystal measuring 1.5 x 1.5 x 0.8 cm on matrix, with associated oyelite and calcite. This is from a small pocket collected by Paul Balayer with permission in the mines, in late 2009.

MD-282581 - Olmiite, Calcite, Oyelite - - Archived
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
miniature, 3.6 x 3.1 x 2.6 cm.

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Olmiite, Calcite, Oyelite from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-282581a.jpg]

Olmiite, Calcite, Oyelite from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-282581a.jpg]

3.6 x 3.1 x 2.6 cm. An unusually sharp, square-like crystal that is 1.5 cm on edge and about 2 cm across the diagonal perched nicely in contrasting matrix of calcite and oyelite. All terminations are complete. This is from a small pocket collected by Paul Balayer with permission in the mines, in late 2009.

MD-282585 - Olmiite, Oyelite, Calcite - - Archived
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
thumbnail, 2.9 x 2.0 x 1.8 cm.

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2.9 x 2.0 x 1.8 cm. A sharp 1.8 x 1.7 x 1.6-cm crystal perched delicately atop a natural pedestal of calcite and oyelite-covered matrix. This is a very elegant specimen, a perfect thumbnail. This was one of the best of its size class, as picked by the collector, as well. It is a sharp specimen with amazing geometry to it and the crystal atop really is freestanding. This is from a small pocket collected by Paul Balayer with permission in the mines, in late 2009.

MD-282587 - Olmiite, Calcite, Oyelite - - Archived
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
small cabinet, 9.2 x 6.8 x 6.1 cm.

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9.2 x 6.8 x 6.1 cm. One of the very few larger specimens of matrix, rich with multiple crystals to 8mm individually though some are clustered into larger groups. These come from a small part of the pocket collected by well-known miner here, Paul Balayer (in late 2009). It is a very aesthetic specimen nearly 4 inches across, with remarkable contrast between the sharp and symmetric olmiites, and the rolling matrix underneath (sparkling little calcites dusted with white oyelite). This piece is very 3-dimensional, like a mountain, crystallized around on all sides almost, excepting only a slight contacted strip on the back. The crystals have high lustre, great translucency, and a very unique overall aspect compared to other mineral specimens. It looks for all the world like a Tsumeb cobaltoan smithsonite specimen of top quality - and quite unlike previous finds of olmiite, with these unusual, flattened, squared crystals.

MD-282588 - Olmiite, Calcite, Oyelite - - Archived
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
small cabinet, 9.3 x 8.5 x 7.5 cm.

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9.3 x 8.5 x 7.5 cm. This is one of the very few larger specimens of matrix, rich with multiple crystals to 8mm individually though some are clustered into larger groups. These come from a small part of the pocket collected by well-known miner here, Paul Balayer (in late 2009). It is a very aesthetic specimen nearly 4 inches across, with remarkable contrast between the sharp and symmetric olmiites, and the rolling matrix underneath (sparkling little calcites dusted with white oyelite). This piece is very 3-dimensional, with elegant olmiite crystals climbing up one side like hikers on a mountain. The crystals have high lustre, great translucency, and a very unique overall aspect compared to other mineral specimens. It looks for all the world like a Tsumeb cobaltoan smithsonite specimen of top quality - and quite unlike previous finds of olmiite, with these unusual, flattened, squared crystals.

MD-283220 - Calcite - - Archived
Berry Materials Corp. Quarry (North Vernon Plant), North Vernon, Jennings Co., Indiana, USA
miniature, 3.5 x 3.0 x 2.9 cm.

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Calcite from Berry Materials Corp. Quarry (North Vernon Plant), North Vernon, Jennings Co., Indiana, USA [db_pics/mdpics/MD-283220a.jpg]

Calcite from Berry Materials Corp. Quarry (North Vernon Plant), North Vernon, Jennings Co., Indiana, USA [db_pics/mdpics/MD-283220a.jpg]

3.5 x 3.0 x 2.9 cm. This is a little jewel of a calcite, translucent and so lustrous it looks wet. Classic for the locale, once common and now rare on the market. The crystal is doubly terminated. Ex. Harold Urish Collection.

MD-283229 - Calcite, Conichalcite - - Archived
Gold Hill Mine (Western Utah Mine), Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA
small cabinet, 8.5 x 4.7 x 3.2 cm.

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Calcite, Conichalcite from Gold Hill Mine (Western Utah Mine), Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA [db_pics/mdpics/MD-283229a.jpg]

Calcite, Conichalcite from Gold Hill Mine (Western Utah Mine), Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA [db_pics/mdpics/MD-283229a.jpg]

8.5 x 4.7 x 3.2 cm. A very bright, stunningly white calcite layer covers a carpet of intense green conichalcite here…a classic from this old mine in Utah. The calcites form as dogtooth scalenohedrons, and completely cover the top surface. Ex. Harold Urish Collection.

MD-283231 - Siderite, Calcite - - Archived
Lovilia area, Monroe Co., Iowa, USA
cabinet, 12.3 x 5.7 x 5.0 cm.

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Siderite, Calcite from Lovilia area, Monroe Co., Iowa, USA [db_pics/mdpics/MD-283231a.jpg]

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Siderite, Calcite from Lovilia area, Monroe Co., Iowa, USA [db_pics/mdpics/MD-283231b.jpg]

12.3 x 5.7 x 5.0 cm. This is a most unusual specimen, as I have seen very few examples from this small quarry in Iowa. It is a cabinet plate with lustrous, waxy, sharp crystals of siderite. They have a nice chocolate-brown color to them. This is overall a big and impressive piece, and a very interesting locality example of this species. Minor scalenohedral white calcite is in association. Ex. Harold Urish Collection.

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Rob Lavinsky, rob@irocks.com

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