Difference between revisions of "File:1947-177 residue 3 gypsum particle PPL 400x.jpg"
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| − | Well-shaped particle of gypsum mixed with iron oxides. PPL, 400x. Sample collected from brownish resides in an apothecary jar in the Colonial Williamsburg Collection (CWF 1947-177). Particle has a columnar shape | + | Well-shaped particle of gypsum mixed with iron oxides. PPL, 400x. Sample collected from brownish resides in an apothecary jar in the Colonial Williamsburg Collection (CWF 1947-177). Particle has a columnar shape. 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 | Photo credit: Kirsten Moffitt, Colonial Williamsburg Foundation | ||
Latest revision as of 14:25, 27 September 2017
Well-shaped particle of gypsum mixed with iron oxides. PPL, 400x. Sample collected from brownish resides in an apothecary jar in the Colonial Williamsburg Collection (CWF 1947-177). Particle has a columnar shape. 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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