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Bentonite layers from an ancient deposit of weathered volcanic ash tuff in Wyoming Gray shale and bentonites (Benton Shale; Colorado Springs, Colorado). Bentonite (/ ˈ b ɛ n t ə n aɪ t / BEN-tə-nyte) [1] [2] is an absorbent swelling clay consisting mostly of montmorillonite (a type of smectite) which can either be Na-montmorillonite or Ca-montmorillonite.
The Deicke and Millbrig bentonite layers, specifically the potassium bentonite layer, K-bentonite, were formed from a volcanic eruption during the Taconic orogeny during the Late Ordovician on Laurentia, the craton of North America. Researchers are very interested in the eruptions that formed these bentonite layers because they are thought to ...
History. Pond's Cream was invented in the United States as a patent medicine by pharmacist Theron T. Pond (1800–1852) of Utica, New York, in 1846. Mr. Pond extracted a healing tea from witch hazel [ Hamamelis spp.] which he discovered could heal small cuts and other ailments. The product was named "Golden Treasure."
Phoslock is the commercial name for a bentonite clay in which the sodium and/or calcium ions are exchanged for lanthanum. The lanthanum contained within Phoslock reacts with phosphate to form an inert mineral known as rhabdophane ( ). Phoslock is used in lake restoration projects to remove excess phosphorus from aquatic systems, thereby ...
Beyond flood mitigation, sponge cities may offer other environmental benefits. Chan said that sponge parks could help reduce urban temperatures and address water shortages, as well as providing ...
The rapidly accelerating complex of landslides in Rancho Palos Verdes has created an unforeseen outcome: a new coastline as the seafloor is pushed upward.
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Benstonite fluoresces red or yellow under x-rays and longwave and shortwave ultraviolet. The mineral also exhibits strong red phosphorescence. [3] Benstonite is known to occur in Canada, China, India, Italy, Namibia, Russia, Sweden, and the United States. [4] It occurs in association with alstonite, barite, barytocalcite, calcite, daqingshanite ...
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