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finnchaga: inclusions in fluorite in PPL light
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finnchaga: odd pathways or formations in transparent fluorite
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finnchaga: fluorite with fibriform fluid inclusions
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finnchaga: Unknown brownish and reddish minerals
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finnchaga: tuntematon kalsiitin ja fluoriitin seurassa Vehmaalta
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finnchaga: calcite and hematite inclusions
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finnchaga: color zoning in quartz
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finnchaga: zoning in Vehmaa quartz
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finnchaga: Meteor shower in smoky quartz
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finnchaga: Fe-oxide "ladder" or "spiderleg"
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finnchaga: "Reaching out"
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finnchaga: Graceful Dancers in Sunset