Nahcolite
Template:Short description Script error: No such module "Infobox".Template:Template otherScript error: No such module "Check for unknown parameters". Nahcolite is a soft, colourless or white carbonate mineral with the composition of sodium bicarbonate (NaHCO3) also called thermokalite. It crystallizes in the monoclinic system.[1]
Nahcolite was first described in 1928 for an occurrence in a lava tunnel at Mount Vesuvius, Italy.[2] Its name refers to the elements which compose it: Na, H, C, and O.[3] It occurs as a hot spring and saline lake precipitate or efflorescence; in differentiated alkalic massifs; in fluid inclusions as a daughter mineral phase and in evaporite deposits.[2][1]
It occurs in association with trona, thermonatrite, thenardite, halite, gaylussite, burkeite, northupite and borax.[4] It has been reported in a Roman conduit at Stufe de Nerone, Campi Flegrei, near Naples; in the United States from Searles Lake, San Bernardino County, California; in the Green River Formation, Colorado and Utah; in the Tincalayu deposit, Salar del Hombre Muerto, Salta Province, Argentina; on Mt. Alluaiv, Lovozero Massif and Khibiny Massif, Kola Peninsula, Russia; and around Mount Erebus, Victoria Land, Antarctica.[4]
References
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- ↑ a b Nahcolite data on Webmineral
- ↑ a b Nahcolite on Mindat.org
- ↑ Richard V. Gaines, H. Catherine W. Skinner, Eugene E. Foord, Brian Mason, and Abraham Rosenzweig: Dana's new mineralogy, John Wiley & Sons, 1997
- ↑ a b Nahcolite in the Handbook of Mineralogy
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