#ThinSectionThursday Trying something a little different. PPL followed by XPL. Biotite-garnet schist, Hāwea, New Zealand. # Geology http://pic.twitter.com/pVBX9Oc9rn
— Matthew Tarling (@RocksbyDefault) April 12, 2017
via Twitter https://twitter.com/RocksbyDefault
April 13, 2017 at 12:58AM
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