General Information:
Chemical Formula:
Mg6Fe+++2(CO3)(OH)16·4(H2O)
Composition:
(Molecular Weight = 661.71 gm)
Magnesium 22.04 % Mg
Iron 16.88 % Fe
Hydrogen 3.66 % H
Carbon 1.82 % C
Oxygen 55.61 % O
Empirical Formula:
Mg6Fe3+2CO3(OH)16·4(H2O)
Locality:
Langbanshyttan, Sweden.
Name Origin:
From the Greek, pyro and the Latin aurium, "fire" and "golden" because of the gold-like submetallic scales present in its type locality.
Physical Properties:
Cleavage:
[0001] Perfect
Color:
brownish yellow, brown white, colorless, greenish, or yellowish white.
Density:
2.07
Diaphaniety:
Transparent
Habits:
Tabular - Form dimensions are thin in one direction., Fibrous - Crystals made up of fibers.,
Hardness:
2.5 - Finger Nail
Luster:
Pearly
Streak:
white
More details...