Zaratite (emerald-green coating), hellyerite (powder-blue) and heazlewoodite (light bronze)
General
Category
Sulfide mineral
Formula (repeating unit)
Ni3S2
IMA symbol
Hzl[1]
Strunz classification
2.BB.05
Crystal system
Trigonal
Crystal class
Trapezohedral (32) H-M symbol: (32)
Space group
R32
Identification
Color
Pale bronze
Crystal habit
Disseminated granular to massive
Twinning
Possibly the cause of mosaic structure seen in polished section
Cleavage
None
Mohs scale hardness
4
Luster
Metallic
Diaphaneity
Opaque
Specific gravity
5.82
Optical properties
Anisotropy – Strong, brown to bluish gray
References
[2][3][4]
Heazlewoodite, Ni3S2, is a rare sulfur-poor nickel sulfide mineral found in serpentinitized dunite. It occurs as disseminations and masses of opaque, metallic light bronze to brassy yellow grains which crystallize in the trigonal crystal system. It has a hardness of 4, a specific gravity of 5.82. Heazlewoodite was first described in 1896 from Heazlewood, Tasmania, Australia.[4]
Heazlewoodite, Ni3S2, is a rare sulfur-poor nickel sulfide mineral found in serpentinitized dunite. It occurs as disseminations and masses of opaque,...
association with native gold and magnetite in placers; with copper, heazlewoodite, pentlandite, violarite, chromite, and millerite in peridotites; with...
Millerite may be associated with heazlewoodite and is considered a transitional stage in the metamorphic production of heazlewoodite via the above process. Millerite...
pentlandite, is the chief source of mined nickel. Other minerals include heazlewoodite (Ni3S2) and polydymite (Ni3S4), and the mineral Vaesite (NiS2). Some...
In this case, pentlandite may be replaced by millerite, and rarely heazlewoodite. Metamorphism may also be associated with metasomatism, and it is particularly...
Hellyerite Zaratite (emerald-green coating), hellyerite (powder-blue) and heazlewoodite (light bronze) General Category Carbonate mineral Formula (repeating...
millerite, reevesite and goethite at Bon Accord; and with native nickel, heazlewoodite and millerite at Mt. Clifford. It has also been reported from the Logatchev-1...
telluride are formed. There are numerous sulfides: Ni1.5S, Ni17S18, Ni3S2 (heazlewoodite), Ni3S4 (polydymite), Ni9S8 (godlevskite), NiS (millerite) and two other...
chondrodite, norbergite, wagnerite and fluoborite from Mount Bischoff, heazlewoodite (Originally discovered in Tasmania) and shandite from the Trial Harbour...
alter to stichtite, and pentlandite may retrogress into millerite or heazlewoodite. Kambalda style komatiitic nickel mineralisation was initially discovered...
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