Sample of colemanite. Colemanite is hydrated calcium borate found as splendid,prismatic crystals. It is semi-hard,light and exhibits perfect cleavage. Colemanite is an important ore of boron,and is formed in evaporite basins fed by geothermal springs. The largest deposits are in California,Turkey,Chile and Kazakhstan | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Johnson, Ben |
Taille de l’image : | 4647 px × 4708 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |