Geode. Macrophotograph of the cut and polished surface of a sectioned geode. A geode is a hollow rock in which layers of crystals have been deposited over time. The solution from which the crystals precipitated entered through a small hole at upper right. The mineral found in geodes is usually agate,a form of chalcedony. This is a type of quartz. Magnification: x2.5 at 4x5ins size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 3685 px × 4782 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |