General Information:
Chemical Formula:Ni3(CO3)(OH)4·4(H2O)
Composition:(Molecular Weight = 325.15 gm)Nickel 54.15 %
NiHydrogen 2.79 %
H Carbon 3.69 %
C Oxygen 39.37 %
O Empirical Formula: Ni3(CO3)(OH)·4(H2O)
Locality:Cape Ortegal, Galicia, Spain. Broken Hill, New South Wales, Australia.
Name Origin:Named after Antonio Gil y Zarate (1793-1861), Spanish diplomat, general director of public education, and counselor of state.
Physical Properties: Cleavage:None
Color:emerald green.
Density:2.6
Diaphaniety:Translucent
Habits:Mammillary - Larger "breast-like" rounded forms resembling botryoidal (e.g. malachite)., Encrustations - Forms crust-like aggregates on matrix., Massive - Uniformly indistinguishable crystals forming large masses.
Hardness:3-3.5 - Calcite-Copper Penny
Luminescence:None.
Luster:Vitreous - Greasy
Streak:light green
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