Cassiterite pseudomorph after Orthoclase

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Cassiterite pseudomorph after orthoclase, 3.5-cm twinned crystal group, from Wheal Coates, St. Agnes, Cornwall, England. Photo: Simone Citon.

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Added on02/13/2026
Publications
  • Mineralogical Record Private Mineral Collections In Italy page 45

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Cassiterite
Mineral guide
Learn about Cassiterite
mirror-like luster and dense, prismatic crystals; localities Panasqueira, Xuebaoding, Viloco; value hinges on finish, size, and matrix.
Regional guide
Cassiterite from Wheal Coates
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