In serpentinized ultramafic rocks as a result o flow-temperature hydrothermal activity.
IMA Status:
Approved IMA 1967
Locality:
Bogota, Canala, New Caledonia. Link to MinDat.org Location Data.
Name Origin:
From the German Nickel - "demom", from a contraction of kupfernickel, or "Devil's Copper", as the mineral was believed to contain copper but yielded none when smelted.
Chemical Formula: 