Ulexite. Ulexite (hydrated sodium calcium borate hydroxide) is a mineral that occurs in silky white crystalline masses (seen here) or in parallel fibres. The natural fibres of ulexite conduct light along their long axes,by internal reflection. When a piece of Ulexite is cut with flat polished faces perpendicular to the orientation of the fibres,the upper face of a good-quality specimen will display an image of whatever surface it is placed on | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5138 px × 3425 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |