Sulfide mineral Thiospinel group Spinel structural group
Formula (repeating unit)
(Fe2+Ni23+S4)
IMA symbol
Vio[1]
Strunz classification
2.DA.05
Crystal system
Isometric
Crystal class
Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m)
Space group
Fd3m
Unit cell
a = 9.46 Å; Z = 8
Identification
References
[2][3][4]
Violarite (Fe2+Ni23+S4) is a supergene sulfide mineral associated with the weathering and oxidation of primary pentlandite nickel sulfide ore minerals.
Violarite crystallises in the isometric system, with a hardness of 4.5 to 5.5 and a specific gravity of about 4, is dark violet grey to copper-red, often with verdigris and patina from associated copper and arsenic sulfides, and is typically in amorphous to massive infill of lower saprolite ultramafic lithologies.
Violarite has a characteristic violet colour, hence the name from the Latin 'violaris' alluding to its colour especially when viewed in polished section under a microscope.
Violarite (Fe2+Ni23+S4) is a supergene sulfide mineral associated with the weathering and oxidation of primary pentlandite nickel sulfide ore minerals...
saprolite ultramafic lithologies. Polydymite is the nickel equivalent of violarite and in many cases these two minerals are formed together, potentially...
gold and magnetite in placers; with copper, heazlewoodite, pentlandite, violarite, chromite, and millerite in peridotites; with kamacite, allabogdanite...
peridotite. Associated minerals include nimite, willemseite, nickeloan talc, violarite, millerite, reevesite and goethite at Bon Accord; and with native nickel...
liebenbergite, trevorite, nickeloan serpentine, nickeloan ludwigite, violarite, millerite, gaspeite, nimite and bonaccordite in the South African occurrence...
Fe2Ni3S4 K Bornemann Fe3Ni4S5 K Bornemann Fe2Ni2S3 K Bornemann FeNi2S4 Violarite dark violet grey mineral oxidate Ni3Sn2S2 Ni3Bi2S2 superconducting Ni3Bi2Se2...
associated with polydymite and violarite, nickel sulfides which are of supergene association. Within the lower saprolite, violarite is transitional with unaltered...
minerals which are weathered to produce kambaldaite are pentlandite, violarite, millerite and rarely nickeline. Kambaldaite is associated with goethite...
Sauerborngraben and the Katzbach. The minerals skutterudite, nickelskutterudite and violarite can be found locally. In the Middle Ages Obermoschel and the Landsberg...
gersdorffite are reported. The transition zone supergene sulfide phases include; violarite, smythite, covellite, chalcocite and marcasite after pyrite. The nickel...
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