Concentric zoning

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  MGI2-21.  Scanned CL photo.  Concentric zoning with quartz c-axis pointing out of page, which is the center of the vein.  Bright spots are corundum remaining from thin section polishing process.   EK1-17.  Scanned CL photo.  Concentric zoning with quartz c-axis pointing towards north of page, which is the center of the vein. Return to CL Main Page