5950 x 3939 px | 50,4 x 33,4 cm | 19,8 x 13,1 inches | 300dpi
Data acquisizione:
20 marzo 2025
Altre informazioni:
Quartz after Chrysocolla, after Malachite, after Azurite, Miami, Gila Co., AZ This mineral represents a remarkable sequence of pseudomorphs—where one mineral replaces another while preserving the original crystal or botryoidal form. In this case, the original azurite (Cu₃(CO₃)₂(OH)₂) was first altered to malachite (Cu₂CO₃(OH)₂), then to chrysocolla, and finally overgrown or replaced by microcrystalline quartz (SiO₂). This multi-stage mineral transformation illustrates the complex geochemical evolution in oxidized copper deposits. These specimens are not only visually striking but also scientifically valuable for studying secondary mineralization processes and alteration pathways in copper-rich environments.
