Melkovite
U-Mo occurrence, Shunak Mountains, Mointy Railway Station, Moyynty, Shet District, Karaganda Region, Kazakhstan
Surface of fluorite-silicate rock, broken along bright yellow veinlet of microgranular Melkovite, penetrated by thin veinlets of more light yellow Iriginite and Ferrimolybdite. Fluorite in this rock is very dark violet and macroscopically is almost black due to long alpha-ray irradiation. Specimen size is 5.5x3x3 cm and its radioactivity is 573 ...
© Pavel M. Kartashov collection & photo