Yellow-green ferrimolybdite with probable orange jarosite on quartz. Width of view 8.63mm. Stack of 90 images. Click on the image below for a higher resolution version.
Collected 2/2005. Brown prismatic tourmaline crystals, visually identified by Ralph Bottrill as dravite at the time of collecting, but not analysed to my knowledge. Probably better described as dravite-schorl series. Width of view 11.5mm. Stack of 49 images. Click on the image below for a higher resolution version.
Type Locality for Betpakdalite-FeFe. Ex Bernie Day Collection M2249, Margaret Day
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. Associated minerals are represented by dark-violet (almost black) fluorite, feldspars, hematite and very minor and...
