Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Mammoth mine, Presido 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
- Musonoi mine, Kolwezi, Shaba Cu belt, DR of Congo
- Formula
- Ca(UO2)2(SiO3OH)2·5H2O
- Size
- Miniature 5x3.5x2cm
- Special Info
- Radioactive!!
Fibrous-looking yellow Uranophane crystals to 2mm with excellent coverage associated with yellow patches of Schoepite and brownish yellow Rutherfordine.
- Availability
- Sold
- Locality
- Rossing mine, Rossing, Swakopmund, Namibia
- Formula
- Ca(UO2)2(SiO3OH)2·5H2O
- Size
- SmCabinet 8.5x4x2.5cm
- Special Info
- Radioactive!!
Choice translucent yellow groups of radiating prismatic Uranophane crystals to 6mm and individual crystals to 2mm. Ex. Prosper Williams specimen.
- Availability
- Sold
- Locality
- Valentine, Presidio Co., Texas, United States
- Formula
- Ca(UO2)2(SiO3OH)2·5H2O
- Size
- Thumbnail 2.2x1.7x1.8cm
- Special Info
- Radioactive!!
Excellent yellow sprays of bladed crystals to about 0.75mm.
