Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Sacarîmb (Nagyag in Hungary), Romania
- Formula
- [Pb(Pb,Sb)S2][(Au,Te)]
- Size
- Thumbnail 2.5x2x1.5cm
- Tagged
- tellurium
- Special Info
- Type Locality
A very rich thumbnail with excellent lamellar, platy or foliated crystals of Nagyagite to 2.5mm throughout the matrix with Rhodocrosite crystal-balls. This is a type locality specimen.
- Availability
- Sold
- Locality
- Nakauri mine, Aichi prefecture, Honshu Island, Japan
- Formula
- Cu8(SO4)4(CO3)(OH)6ยท48H2O
- Size
- Thumbnail 3x2.5x2.5cm
- Tagged
- carbonate , copper
- Special Info
- Type Locality
Blue crusts on serpentine matrix. This mineral has 48 water molecules and is a rather rare mineral worldwide. This is type locality.
- Availability
- Sold
- Locality
- Sludyanka, Lake Baikal area, Prebaikalia, Siberia, Russia
- Formula
- NaV3+Si2O6
- Size
- Chip xxcm
- Tagged
- vanadium
- Special Info
- Type Locality
Tiny, less than 0.75mm glassy bright green crystals. Rare. This is author's study material - see prov. tab.
- Availability
- Sold
- Locality
- 10th level, Potosi mine, Santa Eulalia, Chihuahua, Mexico
- Formula
- Fe2+Sn4+(OH)6
- Size
- Miniature 4.5x3.5x1.5cm
- Tagged
- tin
Bright Orange octahedral crystal with cubic faces to nearly 2mm on shiny black Ilvaite crystals with waterclear Fluorite and possible brown feathery Rhodochrosite. Natanite is a rare oxide of tin and found in less than 15 places worldwide. There are no US localities. Of course there are no economic deposits of tin in the US either, so not a whole lot of occurences of tin mineralization.
- Availability
- Sold
- Locality
- 10th level, Potosi mine, Santa Eulalia, Chihuahua, Mexico
- Formula
- Fe2+Sn4+(OH)6
- Size
- Miniature 3.5x1x1.5cm
- Tagged
- tin
There are about 13 crystals of Natanite on the Ilvaite. The best is about 0.5mm. Natanite is a rare tin mineral.
