Phyllosilicates
Fuchsite(Chrome mica)
Chemical Formula : K(Al,Cr)2(AlSi3O10)(OH)2
Mohs Scale : 2.5
Crystal System : Monoclinic
Sepiolite
Chemical Formula : Mg4Si6O15(OH)2·6H2O
Mohs Scale : 2
Crystal System : Orthorhombic
Muscovite
Chemical Formula : KAl2(AlSi3O10)(F,OH)2
Mohs Scale : 2- 2.5
Crystal System : Monoclinic
Lepidolite
Chemical Formula : K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
Mohs Scale : 2.5 - 3
Crystal System : Monoclinic
Lepidolite is the most abundant lithium-bearing mineral and is a secondary source of this metal.
Talc
Chemical Formula : Mg3Si4O10(OH)2
Mohs Scale : 1
Crystal System : Monoclinic or triclinic
Serpantine
Chemical Formula : (Mg, Fe)3Si2O5OH4
Mohs Scale : 3.5 - 4
Crystal System : Monoclinic
Chlorite & Quartz
Lepidolite
From Turkey
Sepiolite
From Eskişehir, Turkey.
Muscovite
Antigorite
Chemical Formula : (Mg, Fe)3Si2O5OH4
Mohs Scale : 3.5-4
Crystal System : Monoclinic