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Sample of Apophyllite and Prehnite

By Communications and Publishing 2016 (approx.)
Image shows a sample of Apophyllite and Prehnite on a black background
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Detailed Description

These two minerals are apophyllite and prehnite. Both apophyllite, the clear crystals, and prehnite, the green mineral, are primarily prized as collectors minerals. 

Sample provided by Carlin Green, USGS. Sample originated from Virginia Crushed Stone Quarry, Virginia, and is 4.6cm in size.

Sources/Usage

Public Domain.