干旱区生态环境知识资源中心(Arid): Antofagastaite, Na2Ca(SO4)(2)center dot 1.5H(2)O, a new mineral related to syngenite

Arid

DOI	10.1180/mgm.2019.17
	Antofagastaite, Na2Ca(SO4)(2)center dot 1.5H(2)O, a new mineral related to syngenite
	Pekov, Igor, V 1; Kovrugin, Vadim M.2,3; Siidra, Oleg, I 2,4; Chukanov, Nikita, V 5; Belakovskiy, Dmitriy 6; Koshlyakova, Natalia N.1; Yapaskurt, Vasiliy O.1; Turchkova, Anna G.1; Moehn, Gerhard 7
通讯作者	Pekov, Igor, V
来源期刊	MINERALOGICAL MAGAZINE
ISSN	0026-461X
EISSN	1471-8022
出版年	2019
卷号	83 期号:6 页码:781-790
英文摘要	The new mineral antofagastaite, ideally Na2Ca(SO4)(2)center dot 1.5H(2)O, was found in the oxidation zone of sulfide-quartz veins at the abandoned Coronet Manuel Rodriguez mine, Mejillones, Antofagasta Province, Antofagasta Region, Chile. It is associated with sideronatrite, metasideronatrite, aubertite, gypsum, ferrinatrite, glauberite, amarillite and an unidentified Fe phosphate. Antofagastaite occurs as prismatic crystals up to 0.5 mm x 1 mm x 5 mm, elongated along [010], typically combined in open-work aggregates up to 1 cm across. Antofagastaite is transparent and colourless, with vitreous lustre. It is brittle; the Mohs' hardness is ca 3. Cleavage is distinct on (001). D-meas. is 2.42(1) and D-calc, is 2.465 g cm(-3). Antofagastaite is optically biaxial (-), alpha = 1.489(2), beta = 1.508(2), gamma = 1.510(2) and 2V(meas). = 40(10)degrees. The IR spectrum is reported. Chemical composition (wt%, electron microprobe, H2O determined by gas chromatography) is: Na2O 20.85, CaO 17.42, SO3 52.56, H2O 7.93, total 98.76. The empirical formula (based on 8 O atoms belonging to sulfate anions per formula unit with all H belonging to H2O molecules) is Na2.06Ca0.95S2.01O8 center dot 1.35H(2)O. Antofagastaite is monoclinic, P2(1)/m, a = 6.4596(4), b= 6.8703(5), c = 9.4685(7) angstrom, beta = 104.580(4)degrees, V= 406.67(5) angstrom(3) and Z= 2. The strongest reflections of the powder XRD pattern [d, angstrom (I, %) (hkl)] are: 9.17 (100) (001), 5.501 (57) (011), 3.437 (59) (020), 3.058 (43) (003), 2.918 (50) ((2) over bar 11), 2.795 (35) (013) and 2.753 (50) (121, 201). The crystal structure was solved based on single-crystal X-ray diffraction data, R-1= 5.71%. The structure of antofagastaite consists of ordered and disordered blocks and is related to syngenite K2Ca(SO4)(2)center dot H2O. Incorporation of additional H2O molecules in the syngenite-type structure results in disorder of the one of the two tetrahedral sulfate groups occurring in antofagastaite. In addition to the above-reported type material, antofagastaite together with syngenite and bleidite occurs in the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia.
英文关键词	antofagastaite new mineral hydrated sodium calcium sulfate syngenite crystal structure oxidation zone of ore deposit Coronel Manuel Rodriguez mine Atacama Desert fumarole Tolbachik volcano
类型	Article
语种	英语
国家	Russia ; France ; Germany
收录类别	SCI-E
WOS记录号	WOS:000510232700002
WOS关键词	CRYSTAL-STRUCTURE ; REFINEMENT
WOS类目	Mineralogy
WOS研究方向	Mineralogy
EI主题词	2019-12-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311119
作者单位	1.Moscow MV Lomonosov State Univ, Fac Geol, Moscow 119991, Russia; 2.St Petersburg State Univ, Dept Crystallog, Univ Embankment 7-9, St Petersburg 199034, Russia; 3.Univ Picardie Jules Verne, UMR 7314, CNRS, Lab Reactivite & Chim Solides, 33 Rue St Leu, F-80039 Amiens, France; 4.Russian Acad Sci, Nanomat Res Ctr, Kola Sci Ctr, Apatity 184200, Russia; 5.Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Moscow Region, Russia; 6.Russian Acad Sci, Fersman Mineral Museum, Leninsky Prospekt 18-2, Moscow 119071, Russia; 7.Dr J Wittemannstr 5, D-65527 Niedernhausen, Germany
推荐引用方式 GB/T 7714	Pekov, Igor, V,Kovrugin, Vadim M.,Siidra, Oleg, I,et al. Antofagastaite, Na2Ca(SO4)(2)center dot 1.5H(2)O, a new mineral related to syngenite[J],2019,83(6):781-790.
APA	Pekov, Igor, V.,Kovrugin, Vadim M..,Siidra, Oleg, I.,Chukanov, Nikita, V.,Belakovskiy, Dmitriy.,...&Moehn, Gerhard.(2019).Antofagastaite, Na2Ca(SO4)(2)center dot 1.5H(2)O, a new mineral related to syngenite.MINERALOGICAL MAGAZINE,83(6),781-790.
MLA	Pekov, Igor, V,et al."Antofagastaite, Na2Ca(SO4)(2)center dot 1.5H(2)O, a new mineral related to syngenite".MINERALOGICAL MAGAZINE 83.6(2019):781-790.