Opal is hydrated silicon oxide. Unlike quartz (silica) which is pure silicon dioxide,opal has some water in its structure,and takes the form of microscopic spherules of various sizes. When these spherules accumulate in a loose jumble the opal is nondesc | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Arem, Joel |
Bildgröße: | 3855 px × 2553 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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