Formula: Ni2(SiO4)
Nesosilicate (insular SiO4 groups), olivine group, nickel-bearing mineral
Crystal System: Orthorhombic
Specific gravity: 4.92 measured, 4.60 calculated
Hardness: 6 to 6½
Streak: White
Colour: Yellow-green to bright green
Common impurities: Mg,Fe,Co

Metamorphic environments


At the type locality, the Bon Accord Ni deposit, Barberton, Mbombela Local Municipality, Ehlanzeni District Municipality, Mpumalanga, South Africa, trevorite-bearing ores formed a small tabular body approximately 20 feet long and about 2 feet thick at the contact between quartzite and serpentinised ultramafics; it appears to have formed at about 730oC and less than 2 kbar during thermal metamorphism, possibly of a nickel-rich meteorite.
The liebenbergite forms part of the assemblage trevorite - nickel serpentine - nickel ludwigite - bunsenite - violarite - millerite - gaspéite - nimite. The original liebenbergite grains filled the interstices between the trevorite grains and measured up to 1 mm or more in diameter. They are, however, almost completely replaced by the secondary nickel serpentine, with the result that only small irregular grains, few exceeding 150 microns in diameter, are present in the serpentine matrix (AM 58.733-735).
Other associated minerals include bonaccordite, goethite, népouite, reevesite and willemseite (Dana).

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