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Iddingsite
Name
Iddingsite
Chemical
Formula
MgFe2Si3O10·4H2O
Species
Silicates
Crystal
System
Orthorhombic
Mohs
Scale
3
Refractive
Index
n = 1.670 - 1.730 n = 1.700 - 1.760 n = 1.720 - 1.770
Specific
Gravity
2.12-2.15

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