Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Sallisaw, Sequoyah Co., Oklahoma, United States
- Formula
- CaCO3
- Size
- Miniature 4x4.5x2.5cm
- Tagged
- carbonate
Super, waterclear Calcite rhombs. The largest crystal is 6mm on edge.
- 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.
- 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
- Locality
- Minerva #1 mine, Hardin Co., Illinois, United States
- Formula
- CaCO3
- Size
- SmCabinet 9x6x6cm
- Tagged
- carbonate
Cabinet specimen with a core of color zoned Fluorite with an overgrowth of scalenohedral Calcite crystals.
- Availability
- Sold
- Locality
- Homestake mine, Lawrence Co., South Dakota, United States
- Formula
- CaCO3
- Size
- Cabinet 10x8x5cm
- Tagged
- carbonate
This specimen is from an old miner's collection. Specifically it was collected from the 6850' main ledge at the Homestake. Specimens with this assembladge of minerals are termed "watercourse" minerals, which are Tertiary age open fracture systems sometimes with hot flowing water. It is a typical example with white Calcite rhombic crystals to 3mm, abundant 1mm cubic Pyrite crystals in 5mm clusters, tetrahedrons of black Sphalerite and dull octahedral crystals of pitted Galena. There my also be some Rutile.
As you know, Homestake was the largest producing underground gold mines in the US for quite a while. These days it is the national underground lab seeking dark matter.
