Learn about Prehnite
apple- to mint-green crystals and sculptural botryoidal/rosette forms; a calcium aluminum silicate formed in low-temp hydrothermal environments.Prehnite from Merelani Hills, Tanzania
Merelani Hills prehnite, Tanzania: glossy translucent crystals on black graphite, lemon-to-mint colors, and a prized locality with context for collectors.Merelani Hills
A collector's guide to Merelani Hills, Tanzania: its geology, mining history and notable minerals, illustrated with the 806 specimens documented from this locality on EarthWonders.
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