Potassium Feldspar look-alikes
Orthoclase or Microcline (KAlSi3O8)
Got a photo? Identify rocks instantly with the Rockby app
Open the appSeveral rocks and minerals can be confused with Potassium Feldspar. 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
Plagioclase Feldspar
(Na,Ca)Al(Si,Al)Si2O8
Also known as: Albite, Oligoclase, Andesine, Labradorite, Bytownite, Anorthite
Quartz
SiO2
Also known as: Rock Crystal, Amethyst, Citrine, Rose Quartz, Smoky Quartz
Nepheline
(Na,K)AlSiO4
Also known as: Elaeolite
Explore Potassium Feldspar
Identify rocks anywhere
Free on iOS, Android, and Web. Photo identification, full database, and your personal collection.