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Steatite
Steatite

Vivianite
Vivianite



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Steatite
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Vivianite
1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.20-2.802.64-2.70
Amber
1 7.18
1.4 Fracture
Not Available
(e.g. graphite).
1.5 Cleavage
Not Available
{010} Perfect
1.6 Mohs Hardness
Not AvailableNot Available
Amber
2 10
1.9 Chemical Composition
Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.