Rare Mineral Specimens - search page
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Cobalt-Gowganda dist., Ontario, Canada
- Formula
- NiSb
- Size
- 7.5 x 4.5 x 3.5 cm - Sm Cabinet
A rich mass of Breithauptite from the Cobalt district of Ontario showing veinlets and rosette-like growth habits.
- Availability
- Sold
- Locality
- Le Cetine mine, Rosia, Siena, Tuscany, Italy
- Formula
- NaSbO3
- Size
- 2.8 x 2.2 x 1.3 cm - Thumbnail
- Special Info
- Type Locality
Tiny, less than 0.2mm, pink crystals lining numerous vugs in Metavoltine(?) matrix.
- Availability
- Available
- Price
- $85.00
- Locality
- Klemms Quarry, Moculta, South Australia, Australia
- Formula
- Ca4MgFe3+4(PO4)6(OH)4·12H2O
- Size
- 4.5 x 2.5 x 2 cm - Miniature
- Tagged
- phosphate
Two light yellow crystal groups to 0.5mm. These are very nice crystals and look a little like Montgomeryite. Calcioferrite is found in only five countries and considered very rare.
- Availability
- Sold
- Locality
- Basic Refractories mine, Gabbs, Nye Co., Nevada, United States
- Formula
- Cu2Mg2CO3(OH)6·2H2O
- Size
- 3.5 x 3 x 2.5 cm - Miniature
- Tagged
- carbonate, copper
- Special Info
- Type Locality
Callaghanite was first found at this locality, thus the type locality. It is a 6 or 7 locality mineral, but is only a copper-magnesium carbonate. The mineral was formed at the contact of diorite with serpentinized dolostone. The color is much like Azurite, an azure-blue. The crystals on this specimen are aggregated so there is not any single good crystals, which are usually quite nice.
- Availability
- Sold
- Locality
- Basic Refractories mine, Gabbs, Nye Co., Nevada, United States
- Formula
- Cu2Mg2CO3(OH)6·2H2O
- Size
- 4.5 x 3.5 x 2 cm - Miniature
- Tagged
- carbonate, copper
- Special Info
- Type Locality
Deep blue crystals to less than 0.5mm with white Hydromagnesite.
- Availability
- Available
- Price
- $75.00
- Locality
- Esquire #7 claim, Big Creek, Fresno Co., California, United States
- Formula
- Ba4Fe43+O3(OH)3(Si4O12)[Si2O3(OH)4]Cl
- Size
- 2 x 1.5 x 1 cm - Thumbnail
Dark blue massive Cerchiaraite-(Fe). The Esquire #7 deposit share type localities with two other localities.
