Crystal geode. Lump of rock cut in half showing crystals formed inside. A geode is a concretion,an irregular or ball-shaped object created when minerals fill a cavity in rock. Typically the mineral deposits form crystals,as seen here. Geodes form in different ways in different rock types. Here the geode formed from a cavity left by a fossilised ball of algae | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Photostock-Israel |
Bildgröße: | 5156 px × 3425 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |