Colemanite
Colemanite (Ca2B6O11·5H2O)[6] or (CaB3O4(OH)3·H2O)[4] is a borate mineral found in evaporite deposits of alkaline lacustrine environments. Colemanite is a secondary mineral that forms by alteration of borax and ulexite.[3]
It was first described in 1884 for an occurrence near Furnace Creek in Death Valley and was named after William Tell Coleman (1824–1893), owner of the mine "Harmony Borax Works" where it was first found.[4] At the time, Coleman had alternatively proposed the name "smithite" instead after his business associate Francis Marion Smith.[7]
Uses
Colemanite was the most important ore of boron until the discovery of kernite in 1926. It has many industrial uses such as in heat resistant glass manufacturing.[8]
Occurrence
About 40% of the world's known colemanite reserves are at the Emet mine in western Turkey.[9] Other important sources in Turkey are found at Bigadiç and Kestelek.[10]
See also
References
- ^ 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.
- ^ Schorn, Stefan; et al. (2021). "Colemanit (Colemanite)". Mineralienatlas.
- ^ a b Klein, Cornelis; Hurlbut, Cornelius S. Jr. (1993). Manual of mineralogy: (after James D. Dana) (21st ed.). New York: Wiley. p. 422. ISBN 0-471-57452-X.
- ^ a b c "Colemanite". Mindat.org. Retrieved 30 December 2021.
- ^ "Colemanite mineral data". Webmineral. Retrieved 30 December 2021.
- ^ a b Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C. (2005). "Colemanite" (PDF). Handbook of Mineralogy.
- ^ Hildebrand, GH. (1982) Borax Pioneer: Francis Marion Smith. San Diego: Howell-North Books. p 31 ISBN 0-8310-7148-6
- ^ "Nitrates". Simon & Schuster's Guide to Rocks and Minerals. Simon & Schuster. 1977. p. entry 111. ISBN 978-0-671-24417-0.
- ^ "Emet". Eti Maden. Retrieved 29 November 2024.
- ^ "Country Profile – Boron Turkey". Borates Today. 25 September 2021. Retrieved 29 November 2024.
External links
Media related to Colemanite at Wikimedia Commons- Spencer, Leonard James (1911). . In Chisholm, Hugh (ed.). Encyclopædia Britannica. Vol. 6 (11th ed.). Cambridge University Press. p. 665.
- "Death Valley - Historic Resource Study - A History of Mining". Archived from the original on November 15, 2011.
