Search Archived Mineral Specimens
- 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
- Musonoi mine, Kolwezi, Shaba Cu belt, DR of Congo
- Formula
- Ca(UO2)2(SiO3OH)2·5H2O
- Size
- Miniature 3.8x3x2.3cm
Excellent, large crystals of Uranophane to 4mm. Very rich specimen with a bold yellow color in an open seam the length of the specimen.
- Availability
- Sold
- Locality
- Madawaska Mine, Bancroft, Ontario, Canada
- Formula
- Ca(UO2)2(SiO3OH)2·5H2O
- Size
- Micromount xxcm
An excellent specimen with sprays of yellow crystals to about 0.5mm.
- 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.
- Availability
- Sold
- Locality
- Apex mine, Lander Co., Nevada, United States
- Formula
- (UO2)6SO4O2(OH)6·14H2O
- Size
- Miniature 5x4x4cm
- Special Info
- Fluorescent
- Special Info
- Radioactive!!
- Special Info
- EDS Confirmed
Bright yellow acicular crystals in round aggregate groups to about 1mm. Minor glassy orange crystals of Rutherfordine. Strong bright yellow fluorescence. Radioactive. Excellent specimen.
- Availability
- Sold
- Locality
- Apex mine, Lander Co., Nevada, United States
- Formula
- (UO2)6SO4O2(OH)6·14H2O
- Size
- Miniature 3.5x2.5x2cm
- Special Info
- Radioactive!!
- Special Info
- EDS Confirmed
Bright canary yellow sprays of acicular balls of Uranopilite to about 0.5mm. Very good coverage on one side. EDS spectra on provenance tab.
