Calcite globules. Calcite is the most stable form of calcium carbonate (CaCO3),a mineral that occurs in many forms. Limestone,chalk and marble are entirely or nearly entirely formed by calcite. The small,globular crystals here seen are a rarity,formed by radial,micro-crystalline growth in a void inside basalt,a volcanic rock. Actual width is 90 mm | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5616 px × 3744 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |