General Information:
Chemical Formula:
BaSO4
Composition:
(Molecular Weight = 233.39 gm)
Barium 58.84 % Ba
Sulfur 13.74 % S
Oxygen 27.42 % O
Empirical Formula:
Ba(SO4)
Environment:
Sedimentary rocks and late gangue mineral in ore veins.
IMA Status:
Approved IMA 1960
Locality:
Roses of a red-brown color and sandy texture near Norman, Oklahoma.
Name Origin:
From the Greek, baryos, "heavy."
Physical Properties:
Cleavage:
[010] Perfect, [210] Perfect, [010] Imperfect
Color:
white, yellowish white, grayish white, brownish white, or dark brown.
Density:
4.48
Diaphaniety:
Transparent to translucent to opaque
Habits:
Tabular - Form dimensions are thin in one direction., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Massive - Fibrous - Distinctly fibrous fine-grained forms.
Hardness:
3-3.5 - Calcite-Copper Penny
Luminescence:
Phosphorescent.
Luster:
Vitreous (Glassy)
Streak:
white
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