Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Poudrette quarry, Mont Saint-Hilaire, Montérégie, Québec, Canada
- Formula
- Na4TiZr2O4(CO3)4
- Size
- Miniature 4x3x3.5cm
- Tagged
- carbonate
Large 1-2mm, exceptional Sabinaite crystals scattered amongst tan, large rhombs of Siderite. There are also groups of much smaller Sabinaite. These are seen in the photos as yellowish clusters to 9mm across. The large chalky looking prismatic crystals are Calcioburbankite, also quite remarkable and reach 1.5cm!
- Availability
- Sold
- Locality
- Shaba Cu belt, Democratic Republic of Congo
- Formula
- HAl(UO2)4(PO4)4·16H2O
- Size
- Thumbnail 2x1.4x1.1cm
- Tagged
- phosphate
- Special Info
- Radioactive!!
A choice specimen of bright yellow tabular crystals to 4mm.
- Availability
- Sold
- Locality
- Sacrofano, Roma, Lazio, Italy
- Formula
- (Na,Ca)9(Si,Al)12O24(OH,SO4,CO3,Cl)4·nH2O
- Size
- Miniature 3.5x3x2cm
- Special Info
- Type Locality
Superb transparent colorless, hexagonal crystals to 2.5mm in a 1cm vug. It occurs in stacked hexagonal plates. Sacrofanite is a rare tectosilicate found in volcanic rock in only two worldwide localities. These are by all accounts excellent crystals.
- Availability
- Sold
- Locality
- Cobalt-Gowganda dist., Ontario, Canada
- Formula
- (Co,Fe,Ni)As2
- Size
- Miniature 3.5x4.5x2.5cm
- Tagged
- sulfide
Silvery platy Safflorite crystals in radial sprays to 2mm embedded in pale pinkish Calcite.
- Availability
- Sold
- Locality
- Alberoda, Schlema-Hartenstein dist., Erzgebirge, Saxony, Germany
- Formula
- (Co,Fe,Ni)As2
- Size
- Miniature 4x3x2cm
- Tagged
- sulfide
An incredible specimen showing arborescent or skeletal growth patterns much like Silver. In fact, the crystals may have replaced Silver. There is a secondary growth of Pyrite and possible Skutterudite and minute Arsenopyrite.
