General Information:
Chemical Formula:
(Mn,Ni,Cu)8(SO4)4(CO3)(OH)6·48(H2O)
Composition:
(Molecular Weight = 1,870.41 gm)
Manganese 11.75 % Mn
Copper 3.40 % Cu
Nickel 9.41 % Ni
Hydrogen 5.50 % H
Carbon 0.64 % C
Sulfur 6.86 % S
Oxygen 62.44 % O
Empirical Formula:
Mn2+4Ni3Cu(SO4)4(CO3)(OH)6·48(H2O)
Environment:
Veins cutting massive serpentinite.
IMA Status:
Approved IMA 1976
Locality:
Nakauri, Achi Prefecture, Japan.
Name Origin:
Named for the locality.
Physical Properties:
Color:
sky blue or light blue.
Density:
2.39
Habits:
Acicular - Occurs as needle-like crystals., Fibrous - Crystals made up of fibers., Microscopic Crystals - Crystals visible only with microscopes.
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