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Gemstones, Minerals & Fossils
Gemstones and Minerals
Need help with I.D.
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<blockquote data-quote="Lefty" data-source="post: 263669" data-attributes="member: 2976"><p>I've found similar perfectly shaped little crystals like that in gold-bearing country. They were a pseudomorph - hematite after pyrite, where the pyrite crystals have been replaced by hematite that has assumed their form. If you can bear to sacrifice one just a little to determine wether or not it is actually pyrite under the coating, hematite will leave a brownish-red to cherry red streak on unglazed porcelain.</p></blockquote><p></p>
[QUOTE="Lefty, post: 263669, member: 2976"] I've found similar perfectly shaped little crystals like that in gold-bearing country. They were a pseudomorph - hematite after pyrite, where the pyrite crystals have been replaced by hematite that has assumed their form. If you can bear to sacrifice one just a little to determine wether or not it is actually pyrite under the coating, hematite will leave a brownish-red to cherry red streak on unglazed porcelain. [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
Need help with I.D.
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