Chrysocolla

Field of view: 10 mm. Massive chrysocolla. The massive pale blue vein with a vitreous luster is chrysocolla. The blue crust at the lower right is linarite. The basement is gangue quartz encrusted with brown limonite.

Recovered from a meteoric oxidation zone of a moderate-temperature hydrothermal deposit in andesitic pyroclastics formed by dacite probably associated with a volcanic activity of a caldera.

Chrysocolla from this location was described in 1908.