Braunite in barite. Braunite (grey) is a silicate mineral and a native oxide of manganese. It usually occurs as metallic dark grey tetragonal crystals (seen here). In this sample the braunite crystals rest on a substrate of barite (white). This specimen was found near Ilmenau,Germany,and measures 50 mm across | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 4979 px × 3543 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |