From northern slope...

From northern slope...

A stone of rumburk granite with characteristc blue crystals of sapphire quartz. This specimen was collected on the north slope of Smrek Mt., Izerskie Mts,Poland; August 4, 2008. Probably all the north part of this mountain is composed of such a rock. In this area there is a metamorphic contact between granite and adjacent schists and gneisses.
Romuald Kosina
on Aug 11, 2008 9:35 am
Image ID: 430483

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