Mineral Specimen and Product Inventory Search
- Availability
- Sold
- Locality
- Kaňk, Kutná Hora, Bohemia, Czech Republic
- Formula
- Ag7Pb10Bi15S36
- Size
- 2.5 x 2.5 x 2.5 cm - Thumbnail
- Tagged
- sulfide, silver, bismuth
- Special Info
- EDS Confirmed
Somewhat dull silvery grains of this rare silver-lead-bismuth sulfide. From the stock of Dr. Jaroslav Hrysl.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Equity mine, Bulkley Valley of the Northern Interior , British Columbia, Canada
- Formula
- Ag6Cu4Fe2Sb4S13
- Size
- 12 x 15 x 12 cm - Cabinet
- Tagged
- ore mineral, sulfide, copper, silver
Freibergite is the Ag-dominant analogue of Tetrahedrite. This is a very large and heavy specimen and may require additional postage. One side of the specimen is sawed and polished. The Freibergite can be seen on the polished end as nearly engulfing the entire host rock. Freibergite typically contains anywhere from 22 to 46% Copper and up to 17% Silver.
There are some fantastic crystals to 0.75mm in one area.
- Availability
- Sold
- Locality
- Ivigtut Cryolite deposit, Ivigtut, Arsuk Fjord, Sermersooq, Greenland
- Formula
- PbS
- Size
- 6.5 x 5 x 2.5 cm - Sm Cabinet
- Tagged
- sulfide
Nice specimen full of these sulfides in rich occurence with white Cryolite. Excellent locality specimen.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Picher, Tri-State Dist., Oklahoma, United States
- Formula
- PbS
- Size
- 15 x 6 x 7 cm - Cabinet
- Tagged
- ore mineral, sulfide
Large cabinet specimen with good dull grey cubo-octahedral crystals to 1cm, but averaging about 6-7mm. It's a nice specimen of Galena in a large pocket in which all the crystals have been well preserved. There is also minor black to dark red Sphalerite.
Galena is the most common and widespread ore of Lead with 86.6% Pb. Lead is soft, heavy and malleable. Large quantities were mined from Mississippi Valley deposits, such as the Tri-State mines. About 66% of lead is used lead-acid storage batteries. Lead and its compounds are cumulative poisons.
- Availability
- Sold
- Locality
- Zinkwand, Obertalbach valley, Schladming, Styria, Austria
- Formula
- Ni(As,S)2
- Size
- 0.8 x 1 x 0.5 cm - Thumbnail
- Tagged
- sulfide
- Special Info
- Type Locality
- Special Info
- Microprobed
Small 1cm chip with silvery anhedral Gersdorffite and Nickeline crystals visible under magnification.
The Cureton Collectino label has this as Gersdorffite-Pa3, a polytype naming system that apparently is no longer used for this species.
Microprobe confirmed.
- Availability
- Sold
- Locality
- Whatley quarry, Wells, Mendip, Somerset, England
- Formula
- CdS
- Size
- 5.5 x 3.5 x 3 cm - Sm Cabinet
- Tagged
- sulfide
Yellow coatings of Greenockite on limestone(?)/Calcite matrix.
