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This is a pretty crappy outcrop of what is mapped as neoproterozoic metaconglomerate at the base of the fauquier formation near Marshall Virginia.
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Slightly stretched grains in Antietam Formation quartz sandstone, from western Blue Ridge. Depositional age is Cambrian, deformation is related to the late Paleozoic Alleghanian Orogeny. Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery Collection) using Northern Virginia Community College's gigamacr...
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- 540
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Featuring lots and lots of quartz, shell fragments, and minerals we've yet to identify. Shot against a background that is half black and half white (like a black and white cookie). Thanks to Benji Suarez, who collected and donated this sample. Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery C...
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- 207
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Quartz sand from the passive continental margin of the east coast of the U.S. The petri dish is 9 cm in diameter. Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery Collection) using Northern Virginia Community College's gigamacro rig, as seen here: gigamacro.com/gigapixel-macro-imaging-sy
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Featuring actinolite, augite, almandine, epidote, quartz, orthoclase, and magnetite. The petri dish is 9 cm in diameter. Sample provided by Siim Sepp of sandatlas.org. Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery Collection) using Northern Virginia Community College's gigamacro rig, as see...
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- 447
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Sand from Pays de la Loire, Vendee, Bretignolles-sur-Mer, France. Featuring quartz, almandine, orthoclase, staurolite, clinozoisite, spinel, zircon, rutile, and magnetite. The petri dish is 9 cm in diameter. Sample provided by Siim Sepp of sandatlas.org. Image made as part of the MAGIC project (Mid-Atlantic Ge...
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- 656
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Sand from Calvert Cliffs State Park, MD. Featuring ilmenite, quartz, garnet, magentite, rutile, and zircon. The petri dish is 9 cm in diameter. Sample provided by Siim Sepp of sandatlas.org. Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery Collection) using Northern Virginia Community College'...
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- 605
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Gravel in gravel road just off of Rockwell Church Road in Winder, GA.
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- 238
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This prehistoric ocean floor is the World’s largest exposure of quartz conglomerate (also called ocean spar or puddingstone) and attracts thousands of visitors yearly.
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A beautiful exposure of bull quartz veins in greenstone in a roadcut on the Trans-Canada Highway, west of Marathon, Ontario.
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