Northupite is an uncommon evaporite mineral, with the chemical formula Na3Mg(CO3)2Cl. It occurs as colourless to dark grey or brown octahedral crystals and as globular masses. In synthetic material it forms a series with tychite (Na6Mg2(CO3)4SO4).[3]
northupite, uncommon, evaporite, mineral, with, chemical, formula, na3mg, occurs, colourless, dark, grey, brown, octahedral, crystals, globular, masses, synthetic, material, forms, series, with, tychite, na6mg2, 4so4, octahedrageneralcategorycarbonate, mineral. Northupite is an uncommon evaporite mineral with the chemical formula Na3Mg CO3 2Cl It occurs as colourless to dark grey or brown octahedral crystals and as globular masses In synthetic material it forms a series with tychite Na6Mg2 CO3 4SO4 3 NorthupiteNorthupite octahedraGeneralCategoryCarbonate mineralsFormula repeating unit Na3Mg CO3 2ClIMA symbolNup 1 Strunz classification5 BF 05Crystal systemIsometricCrystal classDiploidal m3 H M symbol 2 m3 Space groupFd3Unit cella 13 98 A Z 16IdentificationColourColourless pale yellow grey brown colourless in transmitted lightCrystal habitOctahedral crystals globular massiveFractureConchoidalTenacityBrittleMohs scale hardness3 1 2 4LustreVitreousDiaphaneityTransparentSpecific gravity2 380 2 407Optical propertiesIsotropicRefractive indexn 1 5144 to 1 550 with iron substitution SolubilityReadily soluble in dilute acids with effervescence Decomposed by hot water with the separation of magnesium carbonate References 2 3 4 It was discovered in 1895 at Searles Lake San Bernardino County California by C H Northup born 1861 from San Jose California for whom Northupite is named It occurs associated with tychite pirssonite at Searles Lake and with shortite trona pirssonite gaylussite labuntsovite searlesite norsethite loughlinite pyrite and quartz in the Green River Formation of Wyoming 2 References edit 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 a b Handbook of Mineralogy a b Mindat with localities Webmineral nbsp Wikimedia Commons has media related to Northupite This article about a specific carbonate mineral is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Northupite amp oldid 1196910415, wikipedia, wiki, book, books, library,
