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 Aeschynite-(Ce) : (Ce,Ca,Fe,Th)(Ti,Nb)2(O,OH)6 |
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Blyumovskaya Pit (Blum Pit; Pit No. 50), Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia
Prismatic crystals of Aeschynite-(Ce) from syenite-pegmatite of Blum Pit. The largest crystal size is 28x16x8 mm. Their total radioactivity is 183 μR/h. Crystals were mined in 1911-1912 during works of Alexandr E. Fersman's Radium Expedition on the mine. Ex-collection of Irina D. Borneman-Starynkevich (1891-1988). Pavel M. Kartashov collection ... |
| © Pavel M. Kartashov | Photo ID: 230815 View Count: 88 |
Samarskite-(Y) : (Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8, Albite : Na[AlSi3O8] |
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Blyumovskaya Pit (Blum Pit; Pit No. 50), Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia
Prismatic crystal of Samarskite-(Y) from albitized zone of syenite-pegmatite of Blum Pit. Specimen size is 22x15x13 mm and its radioactivity is 203 μR/h. The crystal was mined in 1911-1912 during works of Alexandr E. Fersman's Radium Expedition on the mine. Ex-collection of Irina D. Borneman-Starynkevich (1891-1988). Pavel M. Kartashov collection ... |
| © Pavel M. Kartashov | Photo ID: 230822 View Count: 61 |
