Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- São Pedro, Malacacheta dist., Minas Gerais, Brazil
- Formula
- Ba(UO2)2(PO4)2·10H2O
- Size
- Thumbnail 3x2.5x2cm
- Tagged
- phosphate
- Special Info
- Radioactive!!
This is the actual color and not photoshopped. Bright neon greenish yellow thin tabular crystals to 4mm across. The specimen seems to glow in the daylight and is actually brighter than the photos. Originally from the late Carlos Barbosa.
- Availability
- Sold
- Locality
- Mammoth mine, Jeff Davis Co., Texas, United States
- Formula
- Ca(UO2)2(SiO3OH)2·5H2O
- Size
- SmCabinet 9x6x6cm
- Special Info
- Radioactive!!
The matrix is somekind of volcanic tuft or myrolitic rhyolite, but lining the vugs are scattered sprays of glassy yellow Uranophane to 1mm. These are magnificent crystals. Also, although not shown in the photos are lighter yellow smallr sprays of Haiweeite.
- Availability
- Sold
- Locality
- Grants dist., McKinley Co., New Mexico, United States
- Formula
- Ca(UO2)2(SiO3OH)2·5H2O
- Size
- SmCabinet 6x4x4cm
Bright yellow long acicular or fibrous crystals in groups to 2cm. Excellent specimen!
- Availability
- Sold
- Locality
- Grants dist., McKinley Co., New Mexico, United States
- Formula
- Ca(UO2)2(SiO3OH)2·5H2O
- Size
- SmCabinet 8x7.5x4cm
Bright yellow earthy coating od Uranophane with Calcite overcoat in most areas.
- Availability
- Sold
- Locality
- Rossing mine, Rossing, Swakopmund, Namibia
- Formula
- Ca(UO2)2(SiO3OH)2·5H2O
- Size
- Miniature 4.3x3.5x3cm
- Special Info
- Radioactive!!
Glassy yellow bladed crystals to 3mm with good coverage front and back. Excellent specimen. This locality produced some of the best Boltwoodite in the world.
- Availability
- Sold
- Locality
- Happy Jack mine, White Canyon, San Juan Co., Utah, United States
- Formula
- (UO2)6SO4O2(OH)6·14H2O
- Size
- SmCabinet 8x5x2cm
- Special Info
- Radioactive!!
Pulverulent green crystals of Johannite, associated with a lot more Uranoplite (yellow) and Zippeite (orange). This specimen has coverage on both sides. One side is much richer in Johannite, while the other is rich in Zippeite and Uranoplite.
