Agate. Polarized light micrograph of a thin section through an agate mineral. Layers of chalcedony (banded) surrounded by quartz crystals. Chalcedony is the amorphous or non-crystalline form of silica (silica dioxide). Quartz is the pure crystalline form of silica. Impurities cause coloured areas,with the pure quartz being colourless. Magnification: x3 when printed at 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / ANTONIO ROMERO |
Bildgröße: | 5120 px × 3413 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |