Calcite. Image 1 of 2. Cut and polished crystals of the mineral calcite (or calcspar). Calcite is composed of calcium carbonate. It is fluorescent under ultraviolet light. It is the main constit- uent of limestone,chalk and marble. It can also form stalactites or be deposited as large crystals by slowly-cooling lava. Photographed under white light. For the same specimen under ultraviolet light,see E425/693 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Schneider, Mark A. |
Bildgröße: | 3359 px × 4657 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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