Goethite-after-Pyrite replacing Pyrrhotite with Calcite
specimen number:
3261006
location:
Naica, Chihuahua, Mexico
description:
Brownish crystalline goethite replacing previous crystals of what appear to of been pyrrhotite to 2.5 cm in size replaced by pyrite. This all set on a matrix of crystallized calcite and in excellent condition.
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