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A Brazilian granite known as "Minsk Green." Tthis sample features graphic granite, euhedral quartz, garnet, and more. Sample measures 30 cm on a side. Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery Collection) using Northern Virginia Community College's gigamacro rig, as seen here: gig
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- 722
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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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- 705
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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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These are Minerals 36-70 for Geo 306
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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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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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- 477
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Archean conglomerate with detrital pyrite, indicative of a low-oxygen atmosphere. Sample is 16.5 cm across at its widest point, and was provided by Dr. Jay Kaufman of the University of Maryland.
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- 427
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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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- 392
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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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This exposure of tilted strata within the Massanutten Sandstone is found on the north side of Passage Creek above Red Hole, within the Passage Creek Day Use Area of the George Washington National Forest, Virginia. To view a sample of the Massanutten Sandstone in macro detail, try this: gigapan.com/gigapans/1...
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