Calcite with Marcasite (acid dipped)
specimen number:
1831107
location:
Robertson Mine, Treece, Cherokee Co., Kansas, USA
description:
A colorless gem scalenohedral crystal of calcite with inclusions of marcasite. This has been dipped in acid to improve the luster. This was a common practice in this mining district in the 1960s.
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Related by Mineral (Calcite):
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