Fluorcalciopyrochlore, Hydroxycalciopyrochlore, Ilmenite, Aegirine
Karavai Mt, Vishnevye Mountains, Chelyabinsk Oblast, Russia
Polished section of huge zonal crystal of Pyrochlore from nephelin-syenite pegmatite. Associated minerals are black rounded inclusion of Ilmenite crystal (at the center of the bottom part of sample), dark-green Aegirine grain at the right part of sample.
The sample size is 7.5x5.4x3 cm, weight 219.9 g, and radioactivity is 324 μR/h. ...
© Pavel M. Kartashov collection & photo