Rock 365 : Day 78 : Prehnite #365photos

20100319

Day 78 : This sample of prehnite (calcium aluminium silicate hydroxide) is from Barr Head, Renfrewshire, Scotland. Keele collection. It was the first mineral to be named after someone (Colonel Hendrik Von Prehn) rather than somewhere.

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~ by hypocentre on March 19, 2010.

 
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