干旱区生态环境知识资源中心(Arid): Bennesherite, Ba2Fe2+Si2O7: A new melilite group mineral from the Hatrurim Basin, Negev Desert, Israel

Arid

DOI	10.2138/am-2021-7747
	Bennesherite, Ba2Fe2+Si2O7: A new melilite group mineral from the Hatrurim Basin, Negev Desert, Israel
	Krzatala, Arkadiusz; Krueger, Biljana; Galuskina, Irina; Vapnik, Yevgeny; Galuskin, Evgeny
通讯作者	Krzatala, A (corresponding author)，Univ Silesia, Inst Earth Sci, Fac Nat Sci, Bedzinska 60, PL-41200 Sosnowiec, Poland.
来源期刊	AMERICAN MINERALOGIST
ISSN	0003-004X
EISSN	1945-3027
出版年	2022
卷号	107 期号:1 页码:138-146
英文摘要	The first barium member of the melilite group, bennesherite Ba2Fe2+Si2O7 [P (4) over bar2(1)m, Z = 2, a = 8.2334(14) angstrom, c = 5.2854(8) angstrom, V = 359.29(13) angstrom(3)], was discovered in thin veins of rankinite paralava within pyrometamorphic gehlenite hornfels at Gurim Anticline, Hatrurim Basin, Negev Desert, Israel. Bennesherite occurs in small intergranular spaces between large crystals of rankinite, gehlenite, and garnet together with other Ba-minerals such as fresnoite, walstromite, zadovite, gurimite, hexacelsian, and celsian. It forms transparent, light yellow to lemon-colored crystals with a white streak and a vitreous luster. They exhibit good cleavage on (001), a brittle tenacity, and a conchoidal fracture. The estimated Mohs hardness is 5. Bennesherite has a melilite-type structure with the layers composed of disilicate (Si2O7)(6-) groups and (Fe2+O4)(6-) tetrahedra, connected by large eightfold-coordinated Ba atoms. In some grains, epitaxial intergrowths of bennesherite and fresnoite are observed. The structure of the fresnoite, Ba2TiO(Si2O7) with a P4bm space group and unit-cell parameters a = 8.5262(5) angstrom, c = 5.2199(4) angstrom, is closely related to the structure of bennesherite. Among all the known minerals of the melilite group, bennesherite has a structure characterized by the lowest misfit degree between the tetrahedral (T1 and T2 sites) and polyhedral (X-site) layers, as it was shown in both natural and synthetic melilite-type phases.
英文关键词	Bennesherite new mineral melilite group crystal structure Raman fresnoite paralava Hatrurim Israel
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000736146300014
WOS关键词	COMBUSTION METAMORPHIC ROCKS ; CRYSTAL-STRUCTURE ; STRUCTURAL-PROPERTIES ; PALESTINIAN AUTONOMY ; NATURAL MELILITE ; MOTTLED ZONE ; JABEL HARMUN ; GEHLENITE ; REFINEMENT ; FRESNOITE
WOS类目	Geochemistry & Geophysics ; Mineralogy
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376509
作者单位	[Krzatala, Arkadiusz; Galuskina, Irina; Galuskin, Evgeny] Univ Silesia, Inst Earth Sci, Fac Nat Sci, Bedzinska 60, PL-41200 Sosnowiec, Poland; [Krueger, Biljana] Univ Innsbruck, Inst Mineral & Petrog, Innrain 52, A-6020 Innsbruck, Austria; [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	Krzatala, Arkadiusz,Krueger, Biljana,Galuskina, Irina,et al. Bennesherite, Ba2Fe2+Si2O7: A new melilite group mineral from the Hatrurim Basin, Negev Desert, Israel[J],2022,107(1):138-146.
APA	Krzatala, Arkadiusz,Krueger, Biljana,Galuskina, Irina,Vapnik, Yevgeny,&Galuskin, Evgeny.(2022).Bennesherite, Ba2Fe2+Si2O7: A new melilite group mineral from the Hatrurim Basin, Negev Desert, Israel.AMERICAN MINERALOGIST,107(1),138-146.
MLA	Krzatala, Arkadiusz,et al."Bennesherite, Ba2Fe2+Si2O7: A new melilite group mineral from the Hatrurim Basin, Negev Desert, Israel".AMERICAN MINERALOGIST 107.1(2022):138-146.