Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Shinkolobwe, Katanga, Democratic Republic of Congo
- Formula
- Ca(UO2)3CO3(OH)6·3H2O
- Size
- Thumbnail 3x3x2cm
- Tagged
- carbonate
- Special Info
- Type Locality
Faint yellow, vey thinly bladed crystals of Urancalcarite with fairly good coverage associated with orange Curite and black Uraninite. Very nice specimen.
- 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
- Branchville quarry, Branchville, Fairfield Co., Connecticut, United States
- Formula
- UO2
- Size
- SmCabinet 6x6x3.5cm
- Special Info
- Antique Specimen
- Special Info
- Radioactive!!
This is an oldie from the David London collection. In the photos are seen black Uraninite crystal grains with dark green Dickinsonite and pinkish Natrophilite with Microcline. It was originally a specimen that belong to George J Brush. Brush was a famous mineralogist during the mid 1800's and served as the editor of the American Journal of Science and a professor at Yale University. His label is shown in the provenance tab.
- 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.
