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- Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC by Callan Bentley
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Strained metaconglomerate that crops out in a stream in Klingle Valley, DC. Retrograde metamorphism is apparent, with sericite-after-starulote pseudomorphs.
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- 35
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Muscovite schist (metamorphosed Harpers Formation?) from Throroughfare Gap / Bull Run Mountain, Virginia, bearing euhedral porphyroblasts of magnetite. Sample measures 8.5 by 2.5 cm. Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery Collection) using Northern Virginia Community College's gigamacro...
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A garnet-bearing schist -- a wee bit underexposed... :(
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