Biotite look-alikes
K(Mg,Fe)3AlSi3O10(F,OH)2
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Open the appSeveral rocks and minerals can be confused with Biotite. 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 Mica
Muscovite
Also known as: Potash Mica, White Mica
Phlogopite Mica
Phlogopite
Also known as: Magnesium Mica
Lepidolite Mica
Lepidolite
Also known as: Lithium Mica
Chlorite
Chlorite group
Also known as: Green Mica
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