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CHALCEDONY QUARTZ Crystal Cluster FLUORESCENT Mineral Specimen TVERSKAY RUSSIA
- Item No : 395792062512
- Condition : No Condition Info
- Brand : No brand Info
- Seller : callistodesigns
- Current Bid : US $14.39
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* Item Description
- It is from Staritsa quarry, Tverskay oblast, Russia. Tridymite and cristobalite are high-temperature polymorphs of SiO2 that occur in high-silica volcanic rocks. The most important distinction between types of quartz is that of macrocrystalline (individual crystals visible to the unaided eye) and the microcrystalline or cryptocrystalline varieties (aggregates of crystals visible only under high magnification).
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