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TOURMALINE

Click on the image to see a larger version copyright statement	Description: Single, pink, green-capped, columnar crystal of tourmaline, [(Na,Ca)(Li,Mg,Fe",Al)3(Al,Fe"')6B3Si6O27(O,OH,F)4],rising from a matrix of bladed white clevelandite.
	Locality: Paprok, Nuristan, Afghanistan
	Photo donor: Image is by courtesy of Stuart Wilensky www.wilenskyminerals.com