Millerite


Composition: NiS
Crystal System : Trigonal
Colours: Brass-yellow
Lustre : Metallic
Hardness (H) : 3.5
Specific Gravity (S.G) : 5.3
References:

Bartelke (1976)

Distribution

Extremely rare. In polished section only, but questionable status at Tsumeb.

Occurrence

  • Hypogene

Paragenetic and General Notes

Bartelke (1976) cites Geier (1973/74) as recording that millerite could be detected in mixed ore by means of reflected light microscopy, a view reiterated by Pinch and Wilson (1977). However, Lombaard et al. (1986) consider the occurrence of millerite as questionable.