Notes on Rock-forming Minerals(28) Finding of Awaruite (Native Nickel-iron) from Serpentinite near the City of Koti, Sikoku.,

Awaruite, heazlewoodite, and native copper in serpentinized peridotite from the Mineoka district, southern Boso peninsula.

“…The mineral occurs not in unaltered peridotites but invariably in serpentinized rocks. This fact has been considered to indicate that awaruite was formed in the course of serpentinization of the ultramafic rocks (Nickel, 1959;Kanehira et al, 1964;Cham berlain et al, 1965;Ramdohr, 1967). The widespread occurrence of awaruite in serpentinized rocks suggests a reducing condition of serpentinization.…”