Nestled in a vug are pearlescent, disc-shaped crystals of white dickite, to .2 cm across. This is a rare member of the kaolinite-serpentite group. In fact, it is basically crystallized clay, if you want to look at it on a basic level. Very interesting and unusual material and these are fine crystals from an old locale.
Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
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