Mineral Specimen and Product Inventory Search
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Boron, Kern Co., California, United States
- Formula
- NaCaB5O6(OH)6·5H2O
- Size
- 10 x 6 x 6 cm - Cabinet
- Tagged
- Ore Minerals
An excellent specimen showing the fibrous nature of Ulexite used in fiber optics. Also called "TV rock" Ulexite as the remarkable property of transferring light through its fibers by the refraction of light even when bent.
- Availability
- Sold
- Locality
- Lake Boga granite quarry, Lake Boga, Victoria, Australia
- Formula
- CaCu(UO2)(PO4)2·4H2O
- Size
- 1.5 x 1.5 x 1 cm - Thumbnail
- Tagged
- phosphate, copper
- Special Info
- Type & Only Locality
There are two bright green clusters of Ulrichite crystals. The one shown is 0.75mm. This is the type and only locality.
- Availability
- Sold
- Locality
- Silver Cliff mine, Lusk, Niobrara Co., Wyoming, United States
- Formula
- Ca(UO2)2(SiO3OH)2·5H2O
- Size
- 7.5 x 6 x 2 cm - Sm Cabinet
Glassy prismatic yellow crystals to 2mm, sparse on Quartzite matrix.
- Availability
- Available
- Price
- $175.00
- Locality
- Jacksonville dist., Mother Lode Belt, Tuolumne Co., California, United States
- Formula
- Ca3Cr2(SiO4)3
- Size
- 6 x 4 x 2.5 cm - Sm Cabinet
Good coverage of deep emerald green Uvarovite crystals to 1mm with purple chromium Clinichlore.
- Availability
- Sold
- Locality
- Jacksonville dist., Mother Lode Belt, Tuolumne Co., California, United States
- Formula
- Ca3Cr2(SiO4)3
- Size
- 5 x 4.5 x 2 cm - Miniature
Dark green crystals to 1mm spread liberally across matrix of Magnesiochromite. The backside, not photographed, is covered with purple clinochlore.
- Availability
- Available
- Price
- $260.00
- Reduced Price
- $150.00
- Locality
- Jacksonville dist., Mother Lode Belt, Tuolumne Co., California
- Formula
- Ca3Cr2(SiO4)3
- Size
- 7 x 5 x 4 cm - Sm Cabinet
Of the three specimens of Uvarovite posted here, this one has the most single crystals which are well-defined. The crystals range from 0.5mm to 1mm and have grown in larger than usual open spaces. The matrix is Magnesiochromite with minor kemmererite.
