Prehnite and okenite minerals. Sample of rock containing prehnite (small round bumps) and okenite (large,round,fuzzy) crystals. Prehnite and okenite are two minerals that are often found together. Prehnite is a semi-precious gemstone and is a silicate mineral of calcium and aluminium. Prehnite occurs as small pearl-like collections with a vitreous lustre. Okenite is a silicate mineral of calcium and is most commonly found as small white 'cotton ball' formations within basalt rock cavities (geodes) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5150 px × 3433 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |