Cream bertrandite with small pyrite cubes, black ferberite, and orange-brown rhodochrosite. Ex Barry Johnson Collection. Video best viewed full screen.
Type Locality. Few perfect micro crystals of extremely rare borate mineral (part of holotype), eBay geo-trader. Jaroslaw Skupiewski
Type Locality. Extremely rare chloride-borate of Ca and Sr. Part of holotype. This material is very rare, scarce and presents only in old collections and is completely unaccessible for collecting now., eBay geo-trader. Jaroslaw Skupiewski
Type Locality. Chalky-white microconcretions of satimolite – extremely rare borate mineral. Part of holotype., eBay geo-trader. Jaroslaw Skupiewski
ex Joan Lamond Collection, ex Harry Critchley
Type Locality. White fragments in a capsule. Ex Andrew Hodgson Collection (1686).
Melkovite, U-Mo occurrence, Shunak Mts, Mointy Railway Station, Mointy, Balkhash Region, Karagandy Province, Kazakhstan. Type Locality. Certified (microprobe analyzed) sulfur-yellow melkovite, a rare hydrous Ca-Fe phosphate-molybdate, known only from the single locality in the world....
