Lapis lazuli,a rare,deep blue gemstone. Lapis lazuli is a complex mineral containing a mixture of blue lazurite (sodium aluminium silicate),white calcite (calcium carbonate) and small amounts of other minerals. It occurs in silica- poor igneous rocks and metamorphic limestones and is found in Afghanistan,Siberia,Iran and Chile. It was formerly used as the source of the blue pigment ultramarine | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Fleming, Vaughan |
Bildgröße: | 3077 px × 4053 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |