1 Physical Properties
1.2 Tenacity
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1.3 Solubility
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1.5 Durability
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1.7 Specific Gravity
2.9-3.5Not Available
1
7.18
1.9 Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle
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1.11 Cleavage
{110} Perfect, {???} Distinct, {???} Distinct
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1.13 Mohs Hardness
1.16 Chemical Composition
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
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