Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Springwater meteorite, Springwater, Saskatchewan, Canada
- Formula
- Mg3(PO4)2
- Size
- Thumbnail .1x.1x.1cm
- Tagged
- phosphate
- Special Info
- EDS Confirmed
A small, less than 1mm, fragment from the Springwater meteorite with inclusions of Farringtonite, a rare magnesium phosphate found mostly in meteorites. The specimen is in an expoxy mount prepared for EDS verification by Excalibur minerals. See Prov tab for analysis and SEM image.
- Availability
- Sold
- Locality
- Murunskii Massif, Chara & Tokko Rivers, Aldan Shield, Saha, Siberia, Russia
- Formula
- (K,Na)2.5(Ca,Na)7Si16O38(OH,F)2·3.5H2O
- Size
- SmCabinet 9x4.5x3cm
This specimen has pearly crystal plates of Fedorite with great coverage. Fedorite is micaceous with perfect basal cleavage {001} and is a phyllosilicate, although it is not a mica group member. The plates can be split along the cleavage planes easily, but are not flexible as the literature suggest. Associated minerals include Charoite (purple) and Aegerine, which are shown in the photos as radial greaan sprays.
This is a fine specimen for those of you who enjoy study alkali igneous deposits. It is named to honor the achievements of a great Russian mineralogist Evgraf S. Fedorov, one of the founders of modern crystallography.
- Availability
- Sold
- Locality
- Tolbachik Volcano, Kamchatka, Russia
- Formula
- K2Cu3O(SO4)3
- Size
- Miniature 4.5x2.2x2.8cm
- Tagged
- copper
- Special Info
- Type Locality
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
Rich and excellent emerald green crystal group throughout specimen. ID by Dr. Igor Pekov. Fedovite is very rare worldwide occuring in just two main deposits.
- Availability
- Sold
- Locality
- Tolbachik Volcano, Kamchatka, Russia
- Formula
- K2Cu3O(SO4)3
- Size
- Thumbnail 3x2.5x2cm
- Tagged
- copper
- Special Info
- Type Locality
Rich and excellent emerald green crystal group throughout specimen. ID by Dr. Igor Pekov. Fedovite is very rare worldwide occuring in just two main deposits.
- Availability
- Sold
- Locality
- Tsumeb mine, Tsumeb, Namibia
- Formula
- Pb2Zn(AsO4,SO4)2(OH,H2O)
- Size
- Chip xxcm
- Tagged
- arsenate
- Special Info
- Type & Only Locality
Orange crusts of Feinglosite on gypsum matrix. This is a very small specimen to 4mm. Previously in the Georg Gebhard collection.
- Availability
- Sold
- Locality
- West face of Trumbull peak, Mariposa Co., California, United States
- Formula
- Ba6Fe3+3Si8O23(CO3)2Cl3·H2O
- Size
- Thumbnail 2x1x1cm
- Tagged
- carbonate
- Special Info
- Type Locality
Isolated black grains about to 0.5mm with Gillespite in Sanbornite matrix. There are 7-8 grains.
