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Comments on Gigapan: Ferruginous Quartzite

  2. Ferruginous quartzite from the Andersonville quadrangle in Virginia, USA. This rock is interpreted as a metamorphosed silica-iron exhalite. Sample collected by Troy Holland. Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery Collection) using Northern Virginia Community College's gigamacro rig, as ...

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