Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Tolbachik Volcano, Kamchatka, Russia
- Formula
- CuAlO(AsO4)
- Size
- Miniature 4x4x2.5cm
- Tagged
- arsenate , copper
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
- Special Info
- Type & Only Locality
A more specific locality from the author is: Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption of the Tolbachik volcano. Urusovite is the pastal green masses and crystalline grains throughout the spongy matrix. There is a dark green mineral also, although it is certainly one of the many green minerals from this fumarole, which contains 19 type locality minerals.
- Availability
- Sold
- Locality
- Galiléia, Doce Valley, Minas Gerais, Brazil
- Formula
- MgFe3+2(PO4)2(OH)2ยท8H2O
- Size
- SmCabinet 6x3.5x2cm
- Tagged
- phosphate
Excellent yellow 2mm Ushkovite crystals on ugly yellowish Roscherite matrix. Along the cross section of the specimen you can see it is also composed of white Moreasite and Beryllonite. A great combination phosphate specimen.
- Availability
- Sold
- Locality
- Outokumpu, Finland
- Formula
- Ca3Cr2(SiO4)3
- Size
- Miniature 5x3.5x3.5cm
Deep rich green crystals to 5mm with green chromium rich Diopside. This is a pretty good specimen of Uvarovite from a locality very hard-to-obtain.
Old Willard Roberts label, see prov. tab.
- Availability
- Sold
- Locality
- Saranovskii mine, Urals Region, Russia
- Formula
- Ca3Cr2(SiO4)3
- Size
- Miniature 3.5x2.5x1cm
Deep green, lustrous Uvarovite crystals, less than 0.5mm, across matrix.
- Availability
- Sold
- Locality
- Jacksonville dist., Mother Lode Belt, Tuolumne Co., California, United States
- Formula
- Ca3Cr2(SiO4)3
- Size
- SmCabinet 5.5x4x2cm
Good sixe, very nice dark green crystals of Uvarovite to 1mm scatter across Magnesiochromite with purplish chromium Clinochlore.
- Availability
- Sold
- Locality
- Jacksonville dist., Mother Lode Belt, Tuolumne Co., California, United States
- Formula
- Ca3Cr2(SiO4)3
- Size
- SmCabinet 6x4x2.5cm
Good coverage of deep emerald green Uvarovite crystals to 1mm with purple chromium Clinichlore.
