Malachite

Field of view: 5 mm. A botryoidal group of malachite. The green globules are radial groups of acicular malachite. The pale brown basement is gangue quartz encrusted with limonite.

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

Malachite from this location was described in 1947.

Field of view: 5 mm. Acicular malachite. The radial groups of acicular green crystals are malachite. The rounded dark brown rhombohedrons are siderite. The pale brown basement is gangue quartz encrusted with limonite.