Tugtupite, Chkalovite, Vuonnemite, Umbozerite

Specimen ID: 0CU-ULF

Tugtupite : Na4BeAlSi4O12Cl
Chkalovite : Na2BeSi2O6
Vuonnemite : Na11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH)
Umbozerite : Na3Sr4Th[Si(O,OH)3-4]8
As recorded:
Shkatulka pegmatite, Umbozero mine, Alluaiv Mt, Lovozersky District, Murmansk Oblast, Russia
Mindat locality:

Photo added to mindat.org

Pink rims of tugtupite replace outer parts of large grains of white chkalovite. Associating minerals are beige tabular crystals of fresh transparent vuonnemite, yellow cleiophane and dark-grey to black altered umbozerite. Specimen size is 6.5x3.5 cm and its radioactivity is 112 μR/h. Collected by Leonid A. Pautov in July of 2000. Pavel M. Kartashov collection and photo.
Pavel Kartashov - 17th July 2008
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