Tenacity
Brittle
-
Solubility
Soluble
-
Durability
-
-
Specific Gravity
4.3-52.98-3.10
1
7.18
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Fracture
Irregular/uneven
Uneven, Conchoidal
Cleavage
Perfect cleavage parallel to base and prism faces: {001} Perfect, {210} Perfect, {010} Imperfect
{100} Perfect, {110} Good, {011} Distinct
Mohs Hardness
3-3.55.5-6
2
10
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Chemical Composition
BaSO4
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references