General Information:
Chemical Formula:
(Co,Zn,Ni)6(SO4)(OH,Cl)10·8(H2O)
Composition:
(Molecular Weight = 813.42 gm)
Zinc 16.08 % Zn
Cobalt 21.74 % Co
Nickel 7.22 % Ni
Hydrogen 2.97 % H
Sulfur 3.94 % S
Chlorine 8.72 % Cl
Oxygen 39.34 % O
Empirical Formula:
Co3Zn2Ni(SO4)(OH)8Cl2·8(H2O)
Environment:
Secondary alteration mineral.
IMA Status:
Approved IMA
Locality:
Cap Garonne mine, Var, France.
Name Origin:
Named for Therese Magnan for her contributions to knowledge about the Cap Garrone mine.
Physical Properties:
Cleavage:
[0001] Perfect
Color:
pink or light pink.
Density:
2.52
Diaphaniety:
Transparent
Habits:
Thin - Flat dimensioned crystals., Platy - Sheet forms (e.g. micas)., Spherical - Spherical, rounded aggregates.
Hardness:
1.5-2 - Talc-Gypsum
Luminescence:
Non-fluorescent.
Luster:
Pearly
Streak:
white
More details...