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Dominant species
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Barite
Chemical
Formula
BaSO4
Species
Sulfates
Crystal
System
Orthorhombic
Mohs
Scale
3-3.5
Specific
Gravity
4.3-5
Color
Colorless, white, light shades of blue, yellow, grey, brown
Streak
White
Luster
Vitreous, pearly
Refractive
Index
nα = 1.634–1.637nβ = 1.636–1.638nγ = 1.646–1.648
Diaphaneity
transparent to opaque
Cleavage
Perfect cleavage parallel to base and prism faces: Perfect, Perfect, Imperfect
Fracture
Irregular/uneven
Crystal Habit:Tabular parallel to base, fibrous, nodular to massive
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