Baryte mineral sample. This mineral (white) is a form of barium sulphate. Here,it has formed lines of tabular crystals. The golden specks are of a copper and iron sulphide mineral called chalcopyrite. The chalcopyrite formed during a period of hydrothermal activity. This sample,from Dreislar in Germany,is 12 centimetres across | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 4843 px × 3694 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |