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The Eureka Quartzite is an extensive Paleozoic marine sandstone deposit in western North America that is notable for its great extent, extreme purity, consistently fine grain size of Quartzite, and its tendency to form conspicuous white cliffs visible from afar. The Eureka is commonly underlain and overlain by contrasting slope-forming ...
Quartzite is a very hard rock composed predominantly of an interlocking mosaic of quartz crystals. The grainy, sandpaper-like surface is glassy in appearance. Minor amounts of former cementing materials, iron oxide, silica, carbonate and clay, often migrate during recrystallization, causing streaks and lenses to form within the quartzite. [ 1]
The unit is a thick sequence of massive quartzite beds, white to reddish or tan in color, 2 to 7 feet (0.6 to 2 m) thick. There are also scattered beds of sericite schist that become more numerous in the uppermost part of the formation, where the quartzite beds thin to 1 to 2 feet (0.3 to 0.6 m) in thickness and the beds are reddened by hematite.
Baraboo Quartzite is a Precambrian geological formation [ 1] of quartzite, found in the region of Baraboo, Wisconsin. While pure quartzite is usually white or gray, Baraboo Quartzite is typically dark purple to maroon in color, due to the presence of iron ( hematite) and other impurities. [ 2] Baraboo Quartzite may display strata created by ...
The East Quartzite Range ( 72Ā°0ā²S 165Ā°5ā²E) is a mountain range, 12 nautical miles (22 km; 14 mi) long, forming a subordinate southwest unit of the King Range, in the Concord Mountains of Victoria Land, Antarctica. These mountains lie approximately 5 nautical miles (9.3 km; 5.8 mi) east of the nearby West Quartzite Range.
1914 [1] The Shinumo Quartzite also known as the Shinumo Sandstone, is a Mesoproterozoic rock formation, which outcrops in the eastern Grand Canyon, Coconino County, Arizona, ( Northern Arizona ). It is the 3rd member of the 5-unit Unkar Group. The Shinumo Quartzite consists of a series of massive, cliff-forming sandstones and sedimentary ...
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