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Prehnite
Prehnite
133
listings
731
in gallery
Market data
About Prehnite
Formula
Ca
2
Al
2
Si
3
O
10
(OH)
2
Mineral guide
Learn about Prehnite
Prehnite — apple- to mint-green crystals and sculptural botryoidal/rosette forms; a calcium aluminum silicate formed in low-temp hydrothermal environments.