Fluorite (also called fluorspar) is a halide mineral composed of calcium fluoride,CaF2. It has a Mohs Scale hardness of 4. Approximate specimen dimension: 10 x 6 x 6 cm. Minerva Mine #1,Cave-in-Rock District,Southern Illinois,USA | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Schneider, Mark A. |
Taille de l’image : | 4256 px × 2832 px |
Model Release : | Non requis |
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