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Mineral Specimens with Calcite
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8.0 x 6.9 x 4.0 cm. This find was made a couple of years back in China, and is absolutely unique: glittery, golden pyrite microcrystals preferentially deposited on the edges of flattened, pastel-pink, manganoan calcite rhombs. The calcite rhombs reach 4.4 cm on this specimen. Some of the specimens had very sparse coverage of pyrite, just a salting, but here, it is richly carpeting the crystal edges.
6.2 x 4.5 x 4.2 cm. A striking cluster of twinned and un-twinned calcite crystals from the recent find at the Fengjiashan Mine of China. The large upright crystal is twinned and is 4.3 cm. Many of the lustrous, water-clear beauties have a neat hematite tint to them.
5.0 x 3.1 x 1.7 cm. A seldom seen Calcite from the Osceola mine near Silverton. This specimen is filled with sharp, chocolate brown Calcite scalenohedra bursting in every direction. The crystals have a matte luster and are apparently coated as the underside of the piece shows white/colorless Calcite crystals. Ex. Jaime Bird Collection.
6.3 x 5.0 x 1.7 cm. The Idarado mine is most famous for its Manganoan Calcite specimens. In fact, the largest quantity of the finest quality Manganoan Calcite specimens from Colorado were found in this mine. This piece is a lovely "fan"-shaped group of modified scalenohedral Manganoan Calcite crystals with a soft pink hue. The crystals are translucent when backlit. Ex. Jaime Bird Collection.
4.7 x 4.3 x 2.6 cm. An aesthetic cluster of parallel-growth, prismatic, grayish-blue baryte blades nicely set in sugary calcite from the 1989 finds at the Sterling Mine at Stoneham, Colorado. The crystals have excellent lustre and translucency and classic chisel termations. The Sterling Mine project was one of the early and successful specimen mining projects undertaken by Bryan Lees of Collectors Edge. Ex. Wes Parker Collection. Excellent and choice material.
9.7 x 6.7 x 6.6 cm. This is a rare specimen. I have seen only 3 from this pocket turn up again in the last several years. The find is called the ''Red Phantom Pocket" for obvious reasons, and I think it was in the late 1980s. This small pocket featured stunning red-phantomed crystals due to hematite inclusions, found in a mine famous for mono-colored yellow and shades-of-yellow calcites. This is a superb cluster, with a major crystal nearly 7 cm tall, and complete all around. The lustre is very wet-looking and good for the pocket and the mine both.
3.8 x 3.1 x 3.0 cm. Three 2.0 cm, gemmy, gorgeous, sharp, red sphalerite crystals are aesthetically set in matrix and are nicely complimented by lustrous, tan calcite rhombs, quartz and one galena crystal. This excellent, complete all-around piece is from the Shuikoushan Mine of China and these sphalerites are considered to be some of the finest in the world.
6.2 x 3.3 x 2.5 cm. A stunning, peacock-iridescent, 2.0 cm pyrite crystal aesthetically set on a sliver of matrix with tan, flattened calcite rhombs from a 2005 find at the Sarbay Mine of Kazakhstan. The pristine crystal is complete all-around. The smaller, iridescent pyritohedrons are a very nice compliment.
4.9 x 3.9 x 3.2 cm. Two extremely sharp, translucent, nicely tinted, intergrown, complex calcite rhombs are aesthetically perched atop mounded matrix covered with smaller calcite rhombs on this fine specimen from the Fengjiashan Mine of China. The large crystal is 3.7 cm.
8.0 x 4.2 x 3.3 cm. An uncommon and fine zeolite specimen from Oahu, Hawaii. A 4.0 cm, well-placed, sloping vug in basalt is filled with pearlescent chabazite crystals and is highlighted by a 6 mm, colorless calcite rhomb. The outer rim of the vug is lined with green epidote. Illustrated in the Lapidary Journal April 1986 article on post-volcanic mineral deposits in Hawaii: Kailue Crystals by Tim Hicks.
12.6 x 12.0 x 7.5 cm. A fine cabinet specimen from Jalgaon of a 12.0 cm, pristine, complete all-round, doubly terminated, lustrous and translucent, light gray calcite crystal perched on the end of contrasting, white-covered basalt matrix and nicely accented by smaller calcite scalenohedrons. Choice material from Jalgaon.
11.8 x 8.1 x 5.7 cm. Very glassy and transparent, golden-yellow fluorite cubes are beautifully complimented by translucent, glassy, colorless, complex calcite rhombs to 2.0 cm on this fine cabinet specimen from recent finds at the Moscona Mine of Spain.
5.7 x 5.3 x 4.8 cm. This small find was made last year in China at the Chenzong Mine, and is absolutely unique: glittery, golden pyrite microcrystals preferentially set on the edges of translucent, gray calcite rhombs (to over 9 cm across) as opposed to the disc shaped crystals we saw in previous finds. Some of the specimens had very sparse coverage of pyrite, just a salting, but here, it is richly carpeting the crystal edges. The pristine, four intergrown rhombs (to 2.6 cm) are beautifully set atop matrix covered with smaller calcites. Matrix specimens from this find were uncommon.
9.8 x 4.8 x 3.8 cm. This find was made a couple of years back in China, and is absolutely unique: glittery, golden pyrite microcrystals preferentially deposited on the edges of flattened, translucent, pastel-pink, manganoan calcite rhombs. The calcite rhombs reach 4.5 cm on this fine piece. Some of the specimens had very sparse coverage of pyrite, just a salting, but here, it is richly carpeting the crystal edges.
A superb specimen from the finds of gorgeous, silky calcites in Durango. There is one big, fine twin (5.5 cm across) right in the middle of the specimen. This is distinguished from any specimen I have ever seen from this locality by its amazing form: the plate of crystals sitting upright on a natural “base” of matrix. It doesn’t even need a stand! 11 x 8 x 6.8 cm
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Rob Lavinsky, rob@irocks.com
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share specimen![Calcite (Var: Manganoan Calcite), Pyrite from Chenzhong (?), Hunan Province, China [db_pics/mdpics/MD-221134a.jpg]](db_pics/mdpics/MD-221134a.jpg)
![Calcite from Fengjiashan Mine (Daye Copper mine), Edong Mining District, Daye Co., Huangshi Prefecture, Hubei Province, China [db_pics/mdpics/MD-221140a.jpg]](db_pics/mdpics/MD-221140a.jpg)
![Calcite from Osceola Mine, Cunningham Gulch, Silverton, Silverton District, San Juan Co., Colorado, USA [db_pics/mdpics/MD-221299a.jpg]](db_pics/mdpics/MD-221299a.jpg)
![Calcite from Osceola Mine, Cunningham Gulch, Silverton, Silverton District, San Juan Co., Colorado, USA [db_pics/mdpics/MD-221299b.jpg]](db_pics/mdpics/MD-221299b.jpg)
![Calcite (Var: Manganoan Calcite) from Idarado Mine, Telluride, Ouray District (Uncompahgre District), San Miguel Co., Colorado, USA [db_pics/mdpics/MD-221306a.jpg]](db_pics/mdpics/MD-221306a.jpg)
![Baryte, Calcite from Sterling Mine, Stoneham, Weld Co., Colorado, USA [db_pics/mdpics/MD-221345a.jpg]](db_pics/mdpics/MD-221345a.jpg)
![Calcite, Hematite from Sweetwater Mine (Milliken Mine; Frank R. Milliken; Blair Creek; Ozark Lead Company Mine; Adair Creek; Logan Creek), Ellington, Viburnum Trend District, Reynolds Co., Missouri, USA [db_pics/mdpics/MD-221349a.jpg]](db_pics/mdpics/MD-221349a.jpg)
![Sphalerite, Calcite, Quartz from Shuikoushan Pb-Zn-Cu deposit, Shuikoushan ore field, Changning Co., Hengyang Prefecture, Hunan Province, China [db_pics/mdpics/MD-222330a.jpg]](db_pics/mdpics/MD-222330a.jpg)
![Pyrite, Calcite from Sarbaiskoe deposit (Sarbai; Sarbay Mine), Qostaney Oblysy (Kostanai [Kustany] Oblast'), Kazakhstan [db_pics/mdpics/MD-222333a.jpg]](db_pics/mdpics/MD-222333a.jpg)
![Pyrite, Calcite from Sarbaiskoe deposit (Sarbai; Sarbay Mine), Qostaney Oblysy (Kostanai [Kustany] Oblast'), Kazakhstan [db_pics/mdpics/MD-222333b.jpg]](db_pics/mdpics/MD-222333b.jpg)
![Calcite from Fengjiashan Mine (Daye Copper mine), Edong Mining District, Daye Co., Huangshi Prefecture, Hubei Province, China [db_pics/mdpics/MD-222368a.jpg]](db_pics/mdpics/MD-222368a.jpg)
![Chabazite, Calcite, Epidote from Kapaa Quarry, Kailua, Oahu Island, Honolulu Co., Hawaii, USA [db_pics/mdpics/MD-222378a.jpg]](db_pics/mdpics/MD-222378a.jpg)
![Chabazite, Calcite, Epidote from Kapaa Quarry, Kailua, Oahu Island, Honolulu Co., Hawaii, USA [db_pics/mdpics/MD-222378b.jpg]](db_pics/mdpics/MD-222378b.jpg)
![Calcite from Jalgaon District, Maharashtra, India [db_pics/mdpics/MD-222488a.jpg]](db_pics/mdpics/MD-222488a.jpg)
![Fluorite, Calcite from Moscona Mine, Solís, Llanera, Villabona mining area, Asturias, Spain [db_pics/mdpics/MD-222494a.jpg]](db_pics/mdpics/MD-222494a.jpg)
![Pyrite, Calcite from Chenzhong (?), Hunan Province, China [db_pics/mdpics/MD-223113a.jpg]](db_pics/mdpics/MD-223113a.jpg)
![Pyrite, Calcite (Var: Manganoan Calcite) from Chenzhong (?), Hunan Province, China [db_pics/mdpics/MD-223114a.jpg]](db_pics/mdpics/MD-223114a.jpg)
![Calcite from Durango, Mexico [db_pics/mdpics/MD-22327a.jpg]](db_pics/mdpics/MD-22327a.jpg)