Prehnite look-alikes
Ca2Al2Si3O10(OH)2
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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, with smithsonite)
Chalcedony
SiO2
Also known as: Cryptocrystalline Quartz
Wavellite
Al3(PO4)2(OH,F)3·5H2O
Also known as: None
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