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Gemstones, Minerals & Fossils
Gemstones and Minerals
Rock Identification
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<blockquote data-quote="user 1769" data-source="post: 51709" data-attributes="member: 1769"><p>You often have casts left where pyrite crystals have decomposed and been filled with quartz, calcite or other minerals. That might be what they are.</p></blockquote><p></p>
[QUOTE="user 1769, post: 51709, member: 1769"] You often have casts left where pyrite crystals have decomposed and been filled with quartz, calcite or other minerals. That might be what they are. [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
Rock Identification
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