Goethite-after-Pyrite with Adularia
specimen number:
3332284
location:
Copper Mountain, Prince of Wales Island, Alaska, USA
description: Numerous sharp cubic crystals of what were once pyrite measuring to 3.0 cm on edge now replaced by lustrous black and Brown goethite and scattered throughout a blocky white adularia crystal matrix. In very good condition.
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Related by Mineral (Goethite):
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