Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Swamp No. 1 quarry, Topsham, Sagadahoc Co., Maine, United States
- Formula
- UO2
- Size
- Thumbnail 2x1.8x1.5cm
- Special Info
- Radioactive!!
A choice specimen of black Uraninite crystal group. The original label said it was Euxenite and from Mitchell, North Carolina. It is metamict and tested out to contain U & Pb by EDS. I believe it is Urananite and from the Swamp quarry.
- Availability
- Sold
- Locality
- Cardiff Uranium mine, Haliburton Co., Ontario, Canada
- Formula
- UO2
- Size
- SmCabinet 9x5.5x4cm
A 2cm Uraninite crystal perched nicely on the top of this specimen. The crystal is dull and imperfect perhaps as a result of chipping away the surrounding matrix to expose the crystal. The matrix is a pinkish yellow color with swirls of deep purple Fluorite.
Ex. Wiliam Pinch with label.
- Availability
- Sold
- Locality
- São Pedro, Malacacheta dist., Minas Gerais, Brazil
- Formula
- Ba(UO2)2(PO4)2·10H2O
- Size
- Thumbnail 1.5x1.5x0.4cm
- Tagged
- phosphate
- Special Info
- Radioactive!!
Neon green platy rosette. Small TN size. A little worn on some edges.
- 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!
