Check the listing for details. L Tectonite gneiss with well defined lineations. Condition: New. Listed at 20.00 USD. From glacial drift transported to central NY, originating from Grenville age rocks to the north, 1.0 to 1.25 billion years old. Quartz, feldspar, biotite, garnet, magnetite and other mafics. 4.5"x3.25"x2.75" 2lb.
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