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Dominant species
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Quartz
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Home
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Mineral Encyclopedia
>> Mineral datum >> Illite
9
Photos
Illite
Chemical
Formula
(K,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2,(H2O)]
Species
Silicates
Crystal
System
Monoclinic
Mohs
Scale
1-2
Specific
Gravity
2.6-2.9
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