Specimen of the mineral dioptase on a calcite matrix. Dioptase is a copper cyclosilicate mineral with a green-blue colour. Dioptase has the formula CuSiO3.H2O. This sample is from Tsumeb, Namibia. | |
Licence : | Droits gérés |
Crédit : | Science Photo Library / RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA |
Model Release : | Non requis |
Durée : | 28 Secondes |
Aspect ratio : | 16/9 |
Restrictions : | - |