Arsenopyrite

Natsume, Oya city, Yabu county, Hyogo pref., Japan

Field of view: 50 mm. Arsenopyrite associated with dolomite. The massive silver-white part with a metallic luster at the right half is arsenopyrite. The white part with a vitreous luster at the left is dolomite with perfect cleavage. The massive dark green part is the host serpentinite.

Recovered from serpentinite of a Fe-Ni deposit in serpentinitized harzburgite, a part of an ophiolite.

Arsenopyrite from this location was described in 1909.

Other localities

List of Japanese arsenopyrite localities

Chichibu Mine (Hydrothermal Skarn, Prismatic)
Awashiro Mine (Sericitization, Floater)
Natsume Mine (Serpentinite, Massive)