Whewellite
Strel'tsovskoe Mo-U ore field, Krasnokamensk, Krasnokamensky District, Zabaykalsky Krai, Russia
1x1x0.3 cm cleavage chip of transparent colourless Whewellite from monomineral veins of the mineral, discovered during drilling of the deposit in 70th. Whewellite was deposited here from hydrothermal solutions, contacted with wood of forests, buried by rhyolite flows in the caldera. It isn't too simple to receive such specimen for the moment. ...
© Pavel M. Kartashov collection & photo