Sample of ulexite. Ulexite is a form of hydrated sodium calcium borate. It rarely forms distinct crystals,being seen instead as spongy rounded masses or the aggregate of long,hair-like fibres as here. This form is composed of natural optical fibres,earning it the name 'television stone'. Ulexite is formed by evaporitic precipitation in desert and semi-desert lake basins,and is a major ore of boron. Large deposits are located in the Mojave Desert (California) and in the Atacama Desert of Chile | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Johnson, Ben |
Bildgröße: | 4217 px × 4152 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |