Environmental Engineering Reference
In-Depth Information
14
Land
Acquisition and
Resettlement
When Property and
Development Rights Collide
NICKEL
Nickel is a hard, gray, magnetic ductile metal that is extremely corrosion resistant.
It is an essential element but some nickel compounds are known to be toxic or
carcinogenic. It occurs in association with iron and magnesium in laterites derived
from ultra-basic and ultra-mafic igneous rocks. It also occurs in sulphide ores, the
main mineral being pentlandite. The main use of nickel is in stainless steel and other
alloys, including superalloys. Nickel is also used in rechargeable batteries.
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