Feldspar look-alikes

Feldspar

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Several rocks and minerals can be confused with 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

Quartz

SiO2

Also known as: Silica

Calcite

CaCO3

Also known as: Calcium Carbonate

Nepheline

(Na,K)AlSiO4

Also known as: Nephelite

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Full guide to Feldspar

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