Biotite mineral samples. This phyllosilicate mineral contains potassium, iron and magnesium, as well as fluorides, within an aluminosilicate lattice. It forms crystalline sheets and flakes, and is usually a greenish dark brown. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA |
Modell-Rechte: | nicht erforderlich |
Länge: | 33 Sekunden |
Seitenverhältnis: | 16:9 |
Restrictions: | - |