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Hectorite - Wikipedia

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Phyllosilicate clay mineral

Hectorite is a rare soft, greasy, white clay mineral with a chemical formula of Na0.3(Mg,Li)3Si4O10(OH)2.[2]

Hectorite was first described in 1941 and named for an occurrence in the United States near Hector, California (in San Bernardino County, California,[4] 30 miles east of Barstow.) Hectorite occurs with bentonite as an alteration product of clinoptilolite from volcanic ash and tuff with a high glass content.[2] Hectorite is also found in the beige/brown clay ghassoul, mined in the Atlas Mountains in Morocco.[5] A large deposit of hectorite is also found at the Thacker Pass lithium deposit, located within the McDermitt Caldera in Nevada. The Thacker Pass lithium deposit could be a significant source of lithium.[6]

Despite its rarity, it is economically viable as the Hector mine sits over a large deposit of the mineral. Hectorite is mostly used in making cosmetics, but has uses in chemical and other industrial applications, and is a mineral source for refined lithium metal.[7]

  1. ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ a b c Anthony JW, Bideaux RA, Bladh KW, et al. (1995). "Hectorite" (PDF). Handbook of mineralogy. Tucson, Ariz.: Mineral Data Publishing. ISBN 9780962209734. OCLC 20759166.
  3. ^ "Hectorite Mineral Data". webmineral.com. Retrieved 3 Apr 2019.
  4. ^ a b Jololyn R (2007). "Hectorite: Mineral information, data and localities". www.mindat.org. Retrieved 3 Apr 2019.
  5. ^ Benhammou A, Tanouti B, Nibou L, et al. (2009). "Mineralogical and Physicochemical Investigation of Mg-Smectite from Jbel Ghassoul, Morocco". Clays and Clay Minerals. 57 (2): 264–270. Bibcode:2009CCM....57..264B. doi:10.1346/CCMN.2009.0570212. S2CID 95505225.
  6. ^ Bradley, Dwight C.; Stillings, Lisa L.; Jaskula, Brian W.; Munk, LeeAnn; McCauley, Andrew D. (2017). Lithium, Chapter K of Critical Mineral Resources of the United States—Economic and Environmental Geology and Prospects for Future Supply (PDF) (Report). United States Geological Survey.
  7. ^ Moores S (2007). "Between a rock and a salt lake". Industrial Minerals. 477: 58–69.

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