Covellite

Field of view: 10 mm. Covellite perched on quartz. The dark blue parts are groups of fine platy covellite. The white basement is gangue quartz.

Recovered from an open space of a quartz vein in a meteoric oxidation zone of a moderate-temperature hydrothermal deposit associated with rhyolite.

Covellite from this location was described in 1951.