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Fluorite with calcite
Chip Clark
Specimen | Catalog Number | Locality | Weight |
---|---|---|---|
Fluorite | NMNH R17986 | Spain, Asturias |
- Fluorite (with calcite)
- CaF2
- La Collada, Asturias, Spain
- R17986
These fluorite crystals show two sets of crystal faces: square faces that define the cubes and rough faces along the edges. Temperature and chemical composition during growth determined which faces dominated.