Nepouite

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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