Color image

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EK1-22.  Scanned CL color photo.  Concentric zoning is seen in shades of blue and red.  Sulfides at the top of the image are black.  Dark-luminescing region below sulfides is red.  Concentric zoning is absent at edges of some crystals, and in these regions, luminescence is red.  Yellow spots are corundum remaining from thin section polishing process. Return to Color images page