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- Availability
- Sold
- Locality
- America mine, Santa Eulalia, Chihuahua, Mexico
- Formula
- CaCO3
- Size
- Cabinet 16x13.5x6cm
- Tagged
- carbonate
"Mariposa" habit Calcite crystals to 3cm. The Mariposa habit is formed by two generations of Calcite. The first is easily seen since it is coated with a thin veneer of brown iron oxide. The first generation are scalenohedral crystals, and the second is an overgrowth which totally wraps around the first giving an appearance that of a snow-capped mounain range. The very tips of the crystals are sharp as a pin. The Mineralogical Record issue of "Santa Eulalia" describes these clusters. The specimen is in excellent condition and any serious collector of fine Mexican minerals should have one of these in their collection.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Santa Eulalia, Chihuahua, Mexico
- Formula
- CaCO3
- Size
- Cabinet 13x10x7cm
This is an interesting specimen of a Calcite cluster once called the "Mariposa" habit. These are scalenohedral crystals to 3cm some coated with a thin veneer of chocolate iron oxide. There is a second generation of colorless, complex Calcite on top of the aforementioned Calcite. A third generation can be seen as smalle 1-3mm Calcite crystals occupying the terminations of some of the crystals. Acquired by Hampson in 1971. These Calcites are rarely offered on the market these days. It is a classic for Mexico.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Mina Ojuela, Mapimi, Durango, Mexico
- Formula
- CaCO3
- Size
- Cabinet 14x8x9cm
- Tagged
- carbonate
Amazing chocolate brown scalenohedral crystals to 3cm in a geode-like setting.
- Availability
- Sold
- Locality
- Faraday mine, Hastings Co., Ontario, Canada
- Formula
- CaCO3
- Size
- Miniature 5x3.5x1.7cm
- Tagged
- carbonate
A cleaved Calcite piece with incredible inclusions of Chalcopyrite stringers and unknown "grated" red planes of perhaps alco Chalcopyrite(?).
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Idarado mine, Telluride, San Miguel Co., Colorado, United States
- Formula
- CaCO3
- Size
- Cabinet 9.5x7.5x4cm
- Tagged
- carbonate
- Special Info
- Fluorescent
White, slighly faint pink Calcite crystals to 2.7cm. Fantastic fluorescence.
- Availability
- Sold
- Locality
- Charcas, San Luis Potosi, Mexico
- Formula
- CaCO3
- Size
- Cabinet 13x7x6cm
- Tagged
- carbonate
Classic locality for this form of Calcite known as "poker-chip calcite". This one is in great shape with the largest crystal to 6cm. All the crystals have that unique grey band at the center.
