Pyromorphite

Field of view: 5 mm. Pyromorphite perched on quartz. The hexagonal yellowish-green prisms are pyromorphite. The transparent prisms on the basement is crystals of gangue quartz. The yellowish-brown crust is limonite.

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

Pyromorphite from this location was described in 1898.