Mineral Specimens with Calcite

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MD-278298 - Calcite - - Archived
Joplin Field, Tri-State District, Jasper Co., Missouri, USA
small cabinet, 6.9 x 6.0 x 5.2 cm.

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Calcite from Joplin Field, Tri-State District, Jasper Co., Missouri, USA [db_pics/mdpics/MD-278298a.jpg]

6.9 x 6.0 x 5.2 cm. An old-time, beautiful and very unusual calcite crystal from the Joplin Field of Missouri. The translucent and lustrous scalenohedron has gorgeous, golden-amber color and striking, stepped-growth faces. Three, sharp, protruding, secondary overgrowths run the length of the crystal and meet at the termination, which makes the specimen look just like a drill-bit. The backlit photo highlights the gorgeous amber color and crystal translucency. Classic, pristine material from this historic locale. Ex. George Feist Collection.

MD-278300 - Apophyllite-(KF), Calcite - - Archived
Nasik District, Maharashtra, India
small cabinet, 9.4 x 8.6 x 7.7 cm.

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Apophyllite-(KF), Calcite from Nasik District, Maharashtra, India [db_pics/mdpics/MD-278300a.jpg]

9.4 x 8.6 x 7.7 cm. A very fine radial spray of gem-like, very glassy, pyramidal apophyllite crystals cover a cluster of lustrous, tan, blocky calcite rhombs from recent finds at Nasik, India. The dominating, large apophyllite is 4.0 cm and all of the apophyllites have water-clear terminations. All of the major apophyllites are pristine. A very aesthetic example of the combination of species and well-known locale.

MD-278301 - 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, 11.0 x 6.7 x 5.0 cm.

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11.0 x 6.7 x 5.0 cm. A very fine, old-time, cabinet combination specimen from the Old Dominion Mine at Globe, Arizona. Sparkling, emerald-green, primary malachite microcrystals in bubbly botryoids richly cover the vuggy, quartz-rich 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, which cover the original primary malachite crystals: lighter green malachite on the right side; and pastel-green malachite blades in the center of the piece. An attractive combination piece from this historic Arizona locale, probably dating to the 1950s or earlier.

MD-278306 - Malachite, Calcite - - Archived
Piedmont Mine (Congress West Mine; West Congress Mine; Copper Creek Mine; Copper Queen claims; Bloody Basin Mineral Development Co. property), Bradshaw Mts (Bradshaw Range), Yavapa
small cabinet, 8.8 x 7.4 x 4.8 cm.

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Malachite, Calcite from Piedmont Mine (Congress West Mine; West Congress Mine; Copper Creek Mine; Copper Queen claims; Bloody Basin Mineral Development Co. property), Bradshaw Mts (Bradshaw Range), Yavapa [db_pics/mdpics/MD-278306a.jpg]

Malachite, Calcite from Piedmont Mine (Congress West Mine; West Congress Mine; Copper Creek Mine; Copper Queen claims; Bloody Basin Mineral Development Co. property), Bradshaw Mts (Bradshaw Range), Yavapa [db_pics/mdpics/MD-278306a.jpg]

8.8 x 7.4 x 4.8 cm. Lustrous, emerald-green, primary malachite lathes cover the large, sculptural vug in lustrous, tan, rhombic calcite. This is a very rare Arizona old-time specimen, from the much less well-known Piedmont Mine, which operated from only 1936-1940. Hidden on the side is a secondary vug coated with small, second-generation, flesh-colored calcite rhombs. An interesting addition to this rare Arizona combination specimen.

MD-278321 - Calcite, Dioptase - - Archived
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
small cabinet, 6.5 x 5.0 x 3.0 cm.

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Calcite, Dioptase from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-278321a.jpg]

Calcite, Dioptase from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-278321a.jpg]

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Calcite, Dioptase from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-278321b.jpg]

Calcite, Dioptase from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-278321b.jpg]

6.5 x 5.0 x 3.0 cm. Calcite and dioptase specimens are very highly desirable from the Tsumeb Mine. This is a striking and aesthetic combination specimen of the two species. A showy cluster of sharp, glassy calcite rhombs to 1.6 cm have a thin veneer or are included by dioptase microcrystals. Festooned atop the green-tinted calcite rhombs is a sparkling, second generation of sugary calcite crystals, which really add a dramatic effect to this excellent specimen. Very nearly pristine. Ex. Al and Sue Liebetrau Collection.

MD-278337 - Rosasite, Calcite - - Archived
Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico
small cabinet, 5.2 x 3.9 x 3.0 cm.

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Rosasite, Calcite from Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico [db_pics/mdpics/MD-278337a.jpg]

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Rosasite, Calcite from Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico [db_pics/mdpics/MD-278337b.jpg]

5.2 x 3.9 x 3.0 cm. Velvety spherules of gorgeous, teal-blue, acicular rosasite crystals with glassy calcite crystals beautifully line a cavity in sturdy gossan matrix on this very fine and classic specimen from Mina Ojuela. Ex. Robert Whitmore Collection.

MD-278344 - Calcite (Var: Manganoan Calcite), Quartz - - Archived
Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia
small cabinet, 5.7 x 5.1 x 3.1 cm.

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5.7 x 5.1 x 3.1 cm. The famous mines at Dal’negorsk have produced world-class calcite specimens and this is an excellent example. This very sharp, glassy, translucent, light pink manganoan calcite poker-chip crystal is a complete floater. The only point of attachment is on the rosette of quartz crystals. Ex. Gene Meieran Collection. The accompanying label dates the piece to the very early 1990s, when Dal’negorsk material was just starting to reach the market. Superb orange fluorescence.

MD-278349 - Beryl (Var: Emerald), Calcite - - Archived
Coscuez Mine (Cosquez Mine), Muzo, Vasquez-Yacopí Mining District, Boyacá Department, Colombia
small cabinet, 5.6 x 4.4 x 3.2 cm.

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Beryl (Var: Emerald), Calcite from Coscuez Mine (Cosquez Mine), Muzo, Vasquez-Yacopí Mining District, Boyacá Department, Colombia [db_pics/mdpics/MD-278349a.jpg]

Beryl (Var: Emerald), Calcite from Coscuez Mine (Cosquez Mine), Muzo, Vasquez-Yacopí Mining District, Boyacá Department, Colombia [db_pics/mdpics/MD-278349a.jpg]

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Beryl (Var: Emerald), Calcite from Coscuez Mine (Cosquez Mine), Muzo, Vasquez-Yacopí Mining District, Boyacá Department, Colombia [db_pics/mdpics/MD-278349b.jpg]

5.6 x 4.4 x 3.2 cm. A gorgeous, gemmy and lustrous, 1.1 cm emerald crystal with superb color is set atop blocky, starkly contrasting calcite and shale matrix from the Coscuez Mine of Colombia. This crystal is particularly gemmy in the upper 2 mm and does not appear to have any inclusions or internal crazing. A very fine, highly representative emerald specimen.

MD-278352 - Prehnite, Calcite, Laumontite - - Archived
Millington Quarry (Morris County Crushed Stone Co. Quarry; Tilcon Quarry), Bernards Township, Somerset Co., New Jersey, USA
small cabinet, 7.1 x 3.5 x 2.0 cm.

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Prehnite, Calcite, Laumontite from Millington Quarry (Morris County Crushed Stone Co. Quarry; Tilcon Quarry), Bernards Township, Somerset Co., New Jersey, USA [db_pics/mdpics/MD-278352a.jpg]

Prehnite, Calcite, Laumontite from Millington Quarry (Morris County Crushed Stone Co. Quarry; Tilcon Quarry), Bernards Township, Somerset Co., New Jersey, USA [db_pics/mdpics/MD-278352a.jpg]

7.1 x 3.5 x 2.0 cm. A very fine and aesthetic, intergrown cluster of three translucent, yellow-green prehnite balls from the traprock Millington Quarry of New Jersey. Interesting accents are the calcite rhomb on top of the large sphere and a spray of glassy laumontite blades on the left ball. Excellent material from this well-known locale. Overall a very unusual form and a superb color for prehnite, classic for old finds here. Ex. Robert Whitmore Collection.

MD-278375 - Aurichalcite, Calcite - - Archived
Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico
small cabinet, 6.4 x 5.3 x 3.1 cm.

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Aurichalcite, Calcite from Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico [db_pics/mdpics/MD-278375a.jpg]

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Aurichalcite, Calcite from Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico [db_pics/mdpics/MD-278375b.jpg]

6.4 x 5.3 x 3.1 cm. The Mina Ojuela has produced a new find of this beautiful and striking combination material. The large vug is filled with beautiful, scintillating soft-to-the-touch, felt-like, robin’s-egg blue aurichalcite needles and rests on a sculptural, sturdy, ship-shaped, gossan matrix. A few, small aurichalcite-included calcite rhombs are scattered about. A stunning new find.

MD-278387 - Calcite, Quartz (Var: Amethyst) - - Archived
San Vicente Mine, Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico
cabinet, 10.3 x 8.8 x 3.2 cm.

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10.3 x 8.8 x 3.2 cm. A striking, very uncommon, two-sided, cabinet specimen from the less well-known San Vicente Mine at Guanajuato, Mexico. One side of the thin, banded, amethyst crust is festooned with very striking, layered, "sandwich style", poker-chip calcite crystals to 1.4 cm. The poker-chip crystals are coated with a druse of secondary calcite, giving them an interesting sugary appearance. The other side is dramatically studded with pretty purple amethyst crystals. This is a very fine and rare combination specimen from this historic locale.

MD-278453 - Sphalerite, Chalcopyrite, Quartz, Calcite, Epidote - - Archived
Camp Bird Mine, Ouray, Sneffels District (Mount Sneffels District), Ouray Co., Colorado, USA
small cabinet, 5.7 x 5.2 x 3.4 cm.

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5.7 x 5.2 x 3.4 cm. The Camp Bird mine near Ouray, Colorado is one of the most classic of all the Colorado ore body localities. It is renowned for its superb sulfide specimens. This specimen features superb quality, sharp, lustrous, jet-black crystals of Sphalerite up to 1.1 cm across associated with bright metallic Chalcopyrite plus gemmy Quartz crystals. The underside of the specimen is filled with micro olive-green Epidote and small white crystal groups of scalenohedral Calcite. This is a superb Sphalerite from this most classic of San Juan localities. These specimens are impossible to obtain these days, and are regarded among Colorado collectors as some of the best from the state. This piece came to Rich Kosnar from noted Colorado collector, George Robertson. From the 500 stope, 2100' level.

MD-279142 - Ettringite, Hematite, Calcite - - Archived
N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
small cabinet, 9 x 7.5 x 3 cm.

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Ettringite, Hematite, Calcite from N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-279142a.jpg]

Ettringite, Hematite, Calcite from N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-279142a.jpg]

9 x 7.5 x 3 cm. Only a very few specimens in this pocket seem to have caught the nearby hematite crystals and come out in association. This piece is dramatic. It features a doubly-terminated 4.4-cm crystal, inset with a small cluster of glistening jet black hausmannite, on the hematite-covered plate. On the other side, it is covered by soft white oyelite, so either side offers great contrast for the display of the specimen. The hematites, to 1.7 cm, are mirror-bright, so shiny and reflective you can shave in them. This is a unique piece from a unique pocket, with singular aesthetics.

MD-280280 - Calcite - - Archived
Baia Sprie (Felsöbánya), Maramures Co., Romania
cabinet, 13 x 9.5 x 4.5 cm.

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Calcite from Baia Sprie (Felsöbánya), Maramures Co., Romania [db_pics/mdpics/MD-280280a.jpg]

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Calcite from Baia Sprie (Felsöbánya), Maramures Co., Romania [db_pics/mdpics/MD-280280b.jpg]

13 x 9.5 x 4.5 cm. This specimen is covered with two generations of sparkling calcite. First came a balls of iron-tinged/colored calcite, and these were covered in sprays of seemingly acicular white/clear calcite (unusual, thin, elongated crystals). There is almost no damage on the display face, and it is a very pretty and unusual specimen overall.

MD-280313 - Quartz (Var: Amethyst), Calcite - - Archived
Bombori, Chayanta Province, Potosí Department, Bolivia
small cabinet, 6.0 x 4.8 x 3.3 cm.

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Quartz (Var: Amethyst), Calcite from Bombori, Chayanta Province, Potosí Department, Bolivia [db_pics/mdpics/MD-280313a.jpg]

Quartz (Var: Amethyst), Calcite from Bombori, Chayanta Province, Potosí Department, Bolivia [db_pics/mdpics/MD-280313a.jpg]

6.0 x 4.8 x 3.3 cm. A great small cabinet size specimen featuring wonderful quality, sharp, gemmy, lustrous, prismatic, purple color crystals of Amethyst measuring up to 2.5 cm sitting atop gemmy, lustrous, sharp scalenohedra of Calcite with underlain "Chlorite" on matrix. This piece is remarkable for Bolivia as it features a type of crystallization that is virtually unheard of from any mine down there.

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Rob Lavinsky, rob@irocks.com

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