General Information:
Chemical Formula:
MnWO4
Composition:
(Molecular Weight = 302.79 gm)
Manganese 18.14 % Mn
Tungsten 60.72 % W
Oxygen 21.14 % O
Empirical Formula:
Mn2+(WO4)
Name Origin:
After the German mineralogist, Adolph Huebner.
Physical Properties:
Cleavage:
[010] Perfect
Color:
brown, reddish brown, or brownish black.
Density:
7.2 - 7.1, Average = 7.15
Diaphaniety:
Opaque
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Lamellar - Thin laminae producing a lamellar structure., Massive - Granular - Common texture observed in granite an d other igneous rock.
Hardness:
4.5 - Between Fluorite and Apatite
Luster:
Sub Metallic
Streak:
reddish brown
More details...