Cassiterite-after-Orthoclase
specimen number:
3773077
location:
Wheal Coates, St. Agnes, Cornwall, England, UK
description:
Classic British pseudomorph specimen showing loose complete grouping of twinned orthoclase crystals replaced by granular crystalline cassiterite. This famous specimens were collected in the 1820s. The Jensen label with this one notes that he acquired the piece from mineralogist Fred Pough, and that whole acquired the piece from Sir Arthur Russell.
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