Biotite Quartz look-alikes
K(Mg,Fe)3AlSi3O10(OH)2 with SiO2
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Open the appSeveral rocks and minerals can be confused with Biotite Quartz. Below are documented look-alikes and the features that tell them apart. Never rely on a single feature. Always check multiple properties.
Similar rocks to compare
Muscovite Quartz
Muscovite (KAl2(AlSi3O10)(OH)2) with Quartz (SiO2)
Also known as: White Mica Quartz
Chlorite Quartz
Chlorite group minerals ((Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6) with Quartz (SiO2)
Also known as: Green Mica Quartz
Granite
Quartz, Feldspar (Orthoclase, Plagioclase), Mica (Biotite, Muscovite)
Also known as: Granitic Rock
Schist
Foliated metamorphic rock rich in mica (biotite, muscovite) and quartz
Also known as: Mica Schist
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