File:Asphaltum XPL 200x.jpg
Reference slide for Asphaltum in XPL at 200X. Material is isotropic. Examined with a Nikon NiU upright polarizing light microscope, image captured with DSRi1 Pixel-shifting camera and Nikon Elements Basic Research software. Colonial Williamsburg Foundation, Materials Analysis Laboratory.
Photo credit: Kirsten Moffitt, Colonial Williamsburg Foundation
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