Chrysocolla,copper silicate,is a bright blue mineral that forms in the oxidation zone of copper deposits,and also as a secondary mineral in surrounding rocks. It forms as crusts and veins,and is sometimes coated by minerals that formed at a later time,such as quartz. The material from Zacatecas,Mexico is spectacular and very popular with collectors | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Arem, Joel |
Taille de l’image : | 3855 px × 2553 px |
Model Release : | Non requis |
Property Release : | Non requis |
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