General Information:
Chemical Formula:
Ni3Si2O5(OH)4
Composition:
(Molecular Weight = 380.27 gm)
Silicon 14.77 % Si
Nickel 46.30 % Ni
Hydrogen 1.06 % H
Oxygen 37.87 % O
Empirical Formula:
Ni3Si2O5(OH)4
Environment:
Nickel-bearing laterite deposits.
Locality:
Reis II mine, Nepoui, New Caledonia.
Name Origin:
Named after its locality.
Physical Properties:
Cleavage:
[001] Good, [010] Good
Color:
pale green or deep green.
Density:
2.5 - 3.2, Average = 2.85
Diaphaniety:
Translucent to subtranslucent
Habits:
Platy - Sheet forms (e.g. micas)., Pseudo Hexagonal - Crystals show a hexagonal outline.,
Hardness:
2-2.5 - Gypsum-Finger Nail
Luster:
Vitreous - Pearly
Streak:
greenish white
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