Oxides[26 from 99] Rock crystal Druse of large columnar rock crystal on a stand of black gabbro-norite.
The name, a brief visual description:
Rock crystal
Druse of large columnar rock crystal on a stand of black gabbro-norite.
Sample size:
Druse 13*13*11 cm. 2,342 kg.
Place of sampling:
Polar Urals
