Prehnite look-alikes
Ca2Al(AlSi3O10)(OH)2
Got a photo? Identify rocks instantly with the Rockby app
Open the appSeveral rocks and minerals can be confused with Prehnite. 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
Smithsonite
ZnCO3
Also known as: Zinc spar
Hemimorphite
Zn4Si2O7(OH)2·H2O
Also known as: Calamine (historical)
Chalcedony
SiO2
Also known as: Cryptocrystalline Quartz
Explore Prehnite
Identify rocks anywhere
Free on iOS, Android, and Web. Photo identification, full database, and your personal collection.