Search Archived Mineral Specimens
- 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
- 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
- Shullsburg, Lafayette Co., Wisconsin, United States
- Formula
- CaCO3
- Size
- SmCabinet 9x6x5cm
- Tagged
- carbonate
An excellent multi-faced rhombic Calcite crystal to 5cm across on an older grouping of smaller crystals. The piece shows no damage and is in excellent condition for an old timer.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Shullsburg, Lafayette Co., Wisconsin, United States
- Formula
- CaCO3
- Size
- SmCabinet 5.5x4x5cm
- Tagged
- carbonate
A large second generation 4cm rhombic Calcite crystal on a previous Calcite growths. The specimen features a good phantom crystal (last photo) can be easily seen in person as a large scalenahedral crystal shooting up through the center of the larger rhombic crystal cap.
The area of Shullsburg, Lafayette County in the southwestern corner of Wisconsin contains numerous old mines and are a major part of Upper Mississippi Valley zinc-lead district. This district covers areas in the neighboring states of Iowa and Illinois. Crystals such as these, common at one time, are very hard to obtain these days. Very minor scuffying on this specimen.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Sweetwater mine, Viburnum Trend, Reynolds Co., Missouri, United States
- Formula
- CaCO3
- Size
- Cabinet 12x9x5.5cm
- Tagged
- carbonate
This is a beaut...with honey yllow, lustrous "nail-ead" terminated crystals all to about 3cm long. There is only one cleaved off and it's in the backside, else in good conition.
- Availability
- Sold
- Locality
- Tsumeb mine, Tsumeb, Namibia
- Formula
- CaCO3
- Size
- SmCabinet 8.5x9x6cm
- Tagged
- carbonate
Cabinet specimen with a large group of milky white to colorless Calcite crystals. The largest crystal is 4cm long and perched nicely left of center with many more at the base and about the matrix of tiny Smithsonite crystals. No damage , nicely preserved.
