干旱区生态环境知识资源中心(Arid): Camanchacaite, chinchorroite, espadaite, magnesiofluckite, picaite and riosecoite: six new hydrogen-arsenate minerals from the Torrecillas mine, lquique Province, Chile

Arid

DOI	10.1180/mgm.2019.28
	Camanchacaite, chinchorroite, espadaite, magnesiofluckite, picaite and riosecoite: six new hydrogen-arsenate minerals from the Torrecillas mine, lquique Province, Chile
	Kampf, Anthony R.1; Nash, Barbara P.2; Celestian, Aaron J.1; Dini, Maurizio ; Molina Donoso, Arturo A.
通讯作者	Kampf, Anthony R.
来源期刊	MINERALOGICAL MAGAZINE
ISSN	0026-461X
EISSN	1471-8022
出版年	2019
卷号	83 期号:5 页码:655-671
英文摘要	The new minerals camanchacaite, NaCaMg2[AsO4](2)[AsO3(OH)(2)], chinchorroite, Na2Mg8(As2O7)(2)(AsO3OH)(2)(H2O)(10), espadaite, Na4Ca3Mg2[AsO3(OH)](2)[AsO2(OH)(2)](10)(H2O)6 center dot H2O, magnesiofluckite, CaMg(AsO3OH)(2)(H2O)(2), picaite, NaCa[AsO3OH] [AsO2(OH)(2)] and riosecoite, Ca2Mg(AsO3OH)(3)(H2O)(2), were discovered on two closely related specimens collected from the Torrecillas mine, Iquique Province, Chile. These minerals occur as secondary phases on massive quartz-hematite also in association with anhydrite, gypsum, halite and talmessite. Camanchacaite is monoclinic, C2/c, a = 12.470(9), b = 12.554(9), c = 6.848(9) angstrom, beta= 113.75(2)degrees, V= 981.3(16) angstrom(3) and Z = 4. It has a protonated alluaudite-type structure. Chinchorroite is triclinic, P (1) over bar, a = 8.7777(2), b = 8.8570(3), c= 9.7981(7) angstrom, alpha = 91.097(6), beta = 110.544(8), gamma = 103.167(7)degrees, V = 690.43(7) and Z = 1. The structure contains abbreviated chains of five edge-sharing Mg octahedra that are linked by pyroarsenate and hydrogen-arsenate groups. Espadaite is orthorhombic, Ccca, a = 12.3649(10), b = 22.181(2), c = 18.3292(13) angstrom, V = 5027.1(7) angstrom(3) and Z= 4. The structure is based on heteropolyhedral sheets of formula {Ca3Mg2[AsO3(OH)](2)[AsO2(OH)(2)](10)}(4-) that contain large voids; NaO6 polyhedra occupy the interlayer region. Magnesiofluckite is triclinic, P (1) over bar, a= 8.4143(6), b = 7.5321(5), c = 6.8917(4) angstrom, alpha = 82.477(6), beta= 97.682(6), gamma = 95.379(6)degrees, V = 427.84(5) angstrom(3) and Z = 2. It is isostructural with fluckite. Picaite is monoclinic, P2(1)/c, a = 7.2474(4), b = 14.6547(7), c = 7.2624(5) angstrom, = 99.520(7)degrees, V = 760.70(8) angstrom(3) and Z = 4. The structure contains chains of edge-sharing Na- and Ca octahedra with bridging AsO3(OH) and AsO2(OH)(2) tetrahedra. Riosecoite is triclinic, P (1) over bar, a = 6.8110(9), b = 73156(12), c = 11.7773(17) angstrom, alpha = 83.466(6), beta = 84.394(6), gamma = 79.779(6)degrees, V = 571.95(15) angstrom(3) and Z = 2. The structure contains tetramers of edge-sharing CaO7 and CaO8 polyhedra linked by MgO6 octahedra and bridging AsO3(OH) groups to form chains.
英文关键词	camanchacaite chinchorroite espadaite magnesiofluckite picaite riosecoite new mineral hydrogen-arsenate crystal structure Torrecillas mine Iquique Province Chile
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000510231000006
WOS关键词	IQUIQUE PROVINCE ; ALLUAUDITE-GROUP ; ATACAMA DESERT ; CRYSTAL-STRUCTURE ; BOND-VALENCE ; CHEMISTRY ; FLUCKITE ; FOG ; CA
WOS类目	Mineralogy
WOS研究方向	Mineralogy
EI主题词	2019-10-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310086
作者单位	1.Nat Hist Museum Los Angeles Cty, Mineral Sci Dept, 900 Exposit Blvd, Los Angeles, CA 90007 USA; 2.Univ Utah, Dept Geol & Geophys, Salt Lake City, UT 84112 USA
推荐引用方式 GB/T 7714	Kampf, Anthony R.,Nash, Barbara P.,Celestian, Aaron J.,et al. Camanchacaite, chinchorroite, espadaite, magnesiofluckite, picaite and riosecoite: six new hydrogen-arsenate minerals from the Torrecillas mine, lquique Province, Chile[J],2019,83(5):655-671.
APA	Kampf, Anthony R.,Nash, Barbara P.,Celestian, Aaron J.,Dini, Maurizio,&Molina Donoso, Arturo A..(2019).Camanchacaite, chinchorroite, espadaite, magnesiofluckite, picaite and riosecoite: six new hydrogen-arsenate minerals from the Torrecillas mine, lquique Province, Chile.MINERALOGICAL MAGAZINE,83(5),655-671.
MLA	Kampf, Anthony R.,et al."Camanchacaite, chinchorroite, espadaite, magnesiofluckite, picaite and riosecoite: six new hydrogen-arsenate minerals from the Torrecillas mine, lquique Province, Chile".MINERALOGICAL MAGAZINE 83.5(2019):655-671.