干旱区生态环境知识资源中心(Arid): Calciolangbeinite-O, a natural orthorhombic modification of K2Ca2(SO4)(3), and the langbeinite-calciolangbeinite solid-solution system

Arid

DOI	10.1180/mgm.2021.95
	Calciolangbeinite-O, a natural orthorhombic modification of K2Ca2(SO4)(3), and the langbeinite-calciolangbeinite solid-solution system
	Pekov, Igor V.; Zubkova, Natalia V.; Galuskina, Irina O.; Kusz, Joachim; Koshlyakova, Natalia N.; Galuskin, Evgeny V.; Belakovskiy, Dmitry I.; Bulakh, Maria O.; Vigasina, Marina F.; Chukanov, Nikita V.; Britvin, Sergey N.; Sidorov, Evgeny G.; Vapnik, Yevgeny; Pushcharovsky, Dmitry Yu.
通讯作者	Pekov, IV (corresponding author)，Moscow MV Lomonosov State Univ, Fac Geol, Moscow 119991, Russia.
来源期刊	MINERALOGICAL MAGAZINE
ISSN	0026-461X
EISSN	1471-8022
出版年	2022-01
英文摘要	Calciolangbeinite, ideally K2Ca2(SO4)(3), exists in two modifications, cubic and, first described in the present paper, orthorhombic. They are topologically-similar polymorphs which can be designated as calciolangbeinite-C and calciolangbeinite-O. Calciolangbeinite-O is the first natural orthorhombic langbeinite-like sulfate. It clearly differs from calciolangbeinite-C in the powder X-ray diffraction pattern, optical data and Raman spectrum. Calciolangbeinite-O is found in sublimates of the active Arsenatnaya fumarole at the Tolbachik volcano, Kamchatka, Far Eastern Region, Russia and in pyrometamorphic rocks of the Hatrurim Complex at Jabel Harmun, Judean Desert, Palestinian Autonomy and Har Parsa, Negev Desert, both in Israel. Calciolangbeinite-C is known only in fumarole sublimates at Tolbachik. Calciolangbeinite forms a continuous solid-solution system with langbeinite K2Mg2(SO4)(3). The majority of the system is represented by cubic phases, and only members with compositions K-2(Ca2.0-1.9Mg0.0-0.1)(SO4)(3) have orthorhombic symmetry under room-temperature conditions. The crystal structure of calciolangbeinite-O was studied on a single crystal, chemically very close to K2Ca2(SO4)(3), from Tolbachik (R-1 = 2.75%). The unit-cell parameters are: a = 10.3330(2), b = 10.5027(2), c = 10.1763(2) angstrom, V = 1104.37(4) angstrom(3) and Z = 4; space group is P2(1)2(1)2(1). Calciolangbeinite-O is a low-temperature modification of K2Ca2(SO4)(3) belonging to the K2Cd2(SO4)(3) structure type whereas calciolangbeinite-C (space group P2(1)3), a high-temperature modification, has the langbeinite-type structure. The significant Mg admixture in calciolangbeinite-C from Tolbachik probably stabilises its cubic structure at room temperature. In both high-temperature fumaroles and pyrometamorphic rocks calciolangbeinite crystallises in the cubic modification, and during cooling its chemical variety close to the end-member K2Ca2(SO4)(3) undergoes phase transition to calciolangbeinite-O, whereas the Mg-enriched varieties of the mineral remain calciolangbeinite-C.
英文关键词	calciolangbeinite-O calciolangbeinite-C langbeinite group fumarole sublimate pyrometamorphic rock Tolbachik volcano Hatrurim Complex
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000759542400001
WOS关键词	TOLBACHIK VOLCANO ; KAMCHATKA ; MINERALS ; CRYSTAL ; SULFATES
WOS类目	Mineralogy
WOS研究方向	Mineralogy
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377066
作者单位	[Pekov, Igor V.; Zubkova, Natalia V.; Koshlyakova, Natalia N.; Bulakh, Maria O.; Vigasina, Marina F.; Pushcharovsky, Dmitry Yu.] Moscow MV Lomonosov State Univ, Fac Geol, Moscow 119991, Russia; [Galuskina, Irina O.; Galuskin, Evgeny V.] Univ Silesia, Fac Nat Sci, Bedzinska 60, PL-41200 Sosnowiec, Poland; [Kusz, Joachim] Univ Silesia, Fac Sci & Technol, Ul 75 Pulku Piechoty 1, PL-41500 Chorzow, Poland; [Belakovskiy, Dmitry I.] Russian Acad Sci, Fersman Mineral Museum, Leninsky Prospekt 18-2, Moscow 119071, Russia; [Chukanov, Nikita V.] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Moscow Oblast, Russia; [Britvin, Sergey N.] St Petersburg State Univ, Dept Crystallog, Univ Emb 7-9, St Petersburg 199034, Russia; [Sidorov, Evgeny G.] Russian Acad Sci, Inst Volcanol & Seismol, Far Eastern Branch, Piip Blvd 9, Petropavlovsk Kamchatsk 683006, Russia; [Vapnik, Yevgeny] Ben Gurion Univ Negev, Dept Geol & Environm Sci, POB 653, IL-84105 Beer Sheva, Israel
推荐引用方式 GB/T 7714	Pekov, Igor V.,Zubkova, Natalia V.,Galuskina, Irina O.,et al. Calciolangbeinite-O, a natural orthorhombic modification of K2Ca2(SO4)(3), and the langbeinite-calciolangbeinite solid-solution system[J],2022.
APA	Pekov, Igor V..,Zubkova, Natalia V..,Galuskina, Irina O..,Kusz, Joachim.,Koshlyakova, Natalia N..,...&Pushcharovsky, Dmitry Yu..(2022).Calciolangbeinite-O, a natural orthorhombic modification of K2Ca2(SO4)(3), and the langbeinite-calciolangbeinite solid-solution system.MINERALOGICAL MAGAZINE.
MLA	Pekov, Igor V.,et al."Calciolangbeinite-O, a natural orthorhombic modification of K2Ca2(SO4)(3), and the langbeinite-calciolangbeinite solid-solution system".MINERALOGICAL MAGAZINE (2022).