Millerite
Fun Fact: This mineral is usually found in limestones and ultramafic rocks.
Introduction: Millerite is a nickel sulphide which can be mined for its nickel content if found in sufficient quantities. It is named after a professor of mineralogy at the University of Cambridge, William Hallowes Miller (1801-1880). This mineral is usually found in limestones and ultramafic rocks.
Distribution: Kaokoland sodalite deposits and the Tsumeb Mine.
Composition: Sulphide.
Crystal system: Hexagonal.
Lustre: Metallic.
Streak: Green-black.
Hardness: 3.3-5.
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