Orthoclase look-alikes
KAlSi3O8
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Open the appSeveral rocks and minerals can be confused with Orthoclase. 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
Microcline
Microcline (KAlSi3O8)
Also known as: Potash Feldspar
Sanidine
Sanidine (KAlSi3O8)
Also known as: Potash Feldspar
Albite
Albite (NaAlSi3O8)
Also known as: Sodium Feldspar
Plagioclase Feldspar
Plagioclase Feldspar ((Na,Ca)Al(Si,Al)Si2O8)
Also known as: Sodium-Calcium Feldspar
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