General Information:
Chemical Formula:
Mg6Fe+++(CO3)(OH)13·4(H2O)
Composition:
(Molecular Weight = 554.84 gm)
Magnesium 26.28 % Mg
Iron 10.07 % Fe
Hydrogen 3.81 % H
Carbon 2.16 % C
Oxygen 57.67 % O
Empirical Formula:
Mg6Fe3+(CO3)(OH)13·4(H2O)
Environment:
In serpentinites.
Locality:
Asbestos mine at Torre Santa Maria, Val Malenco. Lombardy, Italy.
Name Origin:
Named after Luigi Brugnatelli (1859-1928), mineralogist, University of Pavia, Italy.
Physical Properties:
Cleavage:
[0001] Perfect
Color:
brown white, brownish pink, yellow brown, or pink.
Density:
2.14
Diaphaniety:
Transparent
Habits:
Micaceous - Platy texture with "flexible" plates., Massive - Lamellar - Distinctly foliated fine-grained forms.,
Hardness:
2 - Gypsum
Luster:
Vitreous - Pearly
Streak:
white
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