Cubic fluorite crystals. Also known as fluorspar or Blue John,this mineral is composed of calcium fluoride. It is used extensively as a flux material in the smelting of iron and also in the ceramic and chemical industries. This deep purple variety is also known as blue John. This sample is from Mexico | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Clutson, Michael |
Bildgröße: | 5400 px × 3600 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |