Azurite

Naka-Okorogara, Nikko city, Tochigi pref., Japan

Source for "azurite blue", silicon copper

Field of view: 5 mm. Azurite associated with malachite. The granular blue crystals are azurite. The green crusts are aggregates of acicular malachite crystals. The light brown basement is limonite.

Recovered from a meteoric oxidation zone of a moderately high-temperature hydrothermal deposit associated with welded tuff. Formed in less than 50 years after the mine was closed,

Azurite from this location was described in 1982.

Other localities

List of Japanese azurite localities

Kisan-mori Mine (Hydrothermal, Tabular)
Mikawa Mine (Hydrothermal, Tabular)
Okorogawa Mine (Hydrothermal, Tabular)
Takaneyama Mine (Hydrothermal, Tabular)
Nakatatsu Mine (Hydrothermal Skarn, Tabular)
Naganobori Mine (Pneumatolytic Skarn, Tabular)