Mineral Specimen and Product Inventory Search
- Availability
- Available
- Price
- $50.00
- Locality
- Esquire #8 claim, Big Creek, Fresno Co., California, United States
- Formula
- Ba4(Ti,Fe3+,Mg)4(O,OH)2[B2Si8O27]Clx
- Size
- 3.3 x 2.2 x 1.3 cm - Miniature
Chocolate brown to deep red prismatic crystals to 3mm in Sanbornite and Celsian matrix.
- Availability
- Available
- Price
- $35.00
- Locality
- Esquire #8 claim, Big Creek, Fresno Co., California, United States
- Formula
- Ba4(Ti,Fe3+,Mg)4(O,OH)2[B2Si8O27]Clx
- Size
- 3.5 x 3 x 1.5 cm - Miniature
Dark brown tabular crystals to 5mm.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Sierra Maestra, Oriente Province, Cuba
- Formula
- (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12ยท3-4H2O
- Size
- 6.5 x 4 x 7 cm - Sm Cabinet
- Tagged
- Ore Minerals
Large piece of black-brown compact Todorokite in plumose patterns with an old Ward's label that says this specimen is from the pre Castro days, which would be before approx. 1959.
We found an old 1944 USGS publication on the deposits of the Oriente Province online (email us for link if interested) with some facts about the Manganese mining in Cuba. In this paper it mentions that in 1941 the Sierra Maestra Mn district produced 75,000 to 90,000 tons of ore with 40% or more Mn and total known reserves estimated at 300,000 tons with 40% Mn.
- Availability
- Available
- Price
- $35.00
- Locality
- Topaz Mountain, Thomas Range, Juab Co., Utah, United States
- Formula
- Al2SiO4F2
- Size
- 2.5 x 1.2 x 0.7 cm - Thumbnail
Sherry-colored, lustrous, complexly terminated Topaz crystal.
- Availability
- Available
- Price
- $45.00
- Locality
- Ouro Preto, Minas Gerais, Brazil
- Formula
- Al2SiO4F2
- Size
- 0.7 x 0.5 x 2.7 cm - Thumbnail
Three really nice gemmy crystals the largest to 2.7cm.
- Availability
- Available
- Price
- $350.00
- Featured
- Featured in Special Editions
- Locality
- Pirquitas Ag-Sn Deposit, Rinconada Dept., Jujuy, Argentina
- Formula
- Ag2FeSn3S8
- Size
- 4 x 3 x 3 cm - Miniature
- Tagged
- sulfide, tin, silver
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
Ex. Dr Werner Paar specimen with microscopic Toyohaite crystals not seen with the naked eye in Franckeite and Cylindrite matrix. Toyohaite is an extremely rare silver-tin sulfide. On the backside is a 1mm tetragonal Pirquitasite crystal much like the one photographed by Brent Thorne on Mindat click here.
Comes with the original Werner Paar label and also a Josef Vajdak label. See prov. tab.
