Quartzite

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Quartzite from Sioux quartzite formation. Sioux Quartzite is a Proterozoic (precambrian) rock found near the intersection of Minnesota, South Dakota, and Iowa. The rock units correlate throughout the upper midwestern and southwestern United States.

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Size: 5132px × 3421px
Location: USA
Photo credit: © Lyroky / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: abundant, adjacent, ballast, bed, cemented, crushed, crystal, crystals, dakota, dioxide, fe2o3, grains, hard, impure, intergrown, iowa, iron, metamorphic, metamorphism, metamorphosed, midwest, midwestern, mineral, minnesota, oxide, oxygen, pink, precambrian, proterozoic, quartz, quartzite, railway, recrystallize, rock, silica, silicon, sio2, south, states, united, usa