The water content and parental magma of the second chassignite NWA 2737: Clues from trapped melt inclusions in olivine

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	The water content and parental magma of the second chassignite NWA 2737: Clues from trapped melt inclusions in olivine
	He, Qi 1; Xiao, Long 1; Hsu, Weibiao 1,2; Balta, J. Brian 3; McSween, Harry Y.3; Liu, Yang 3
刊名	METEORITICS & PLANETARY SCIENCE
	2013-03-01
卷号	48 期号:3 页码:474-492
ISSN号	1086-9379
通讯作者	He, Q (reprint author), China Univ Geosci, Planetary Sci Inst, Wuhan 430074, Peoples R China. Email: qihe_cug@yahoo.com
英文摘要	NWA 2737, the second known chassignite, mainly consists of cumulate olivine crystals of homogeneous composition (Fo=78.7 +/- 0.9). These brown colored olivine grains exhibit two sets of perpendicular planar defects due to shock. Two forms of trapped liquids, interstitial melts and magmatic inclusions, have been examined. Mineral assemblages within the olivine-hosted magmatic inclusions include low-Ca pyroxene, augite, kaersutite, fluorapatite, biotite, chromite, sulfide, and feldspathic glass. The reconstructed parental magma composition (A#) of the NWA 2737 is basaltic and resembles both the experimentally constrained parental melt composition of chassiginites and the Gusev basalt Humphrey, albeit with lower Al contents. A# also broadly resembles the average of shergottite parent magmas or LAR 06319. However, we suggest that the mantle source for the chassignite parental magmas was distinct from that of the shergottite meteorites, particularly in CaO/Al2O3 ratio. In addition, based on the analysis of the volatile contents of kaersutite, we derived a water content of 0.480.67 wt% for the parental melt. Finally, our MELTS calculations suggest that moderate pressure (approximately 6.8kb) came closest to reproducing the crystallized melt-inclusion assemblages.
学科主题	Geochemistry & Geophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geochemistry & Geophysics
研究领域[WOS]	Geochemistry & Geophysics
关键词[WOS]	NAKHLA SNC METEORITE ; MARTIAN METEORITES ; SHERGOTTY METEORITE ; PHYRIC SHERGOTTITES ; MINERAL CHEMISTRY ; HYDROGEN ISOTOPES ; PHASE-EQUILIBRIA ; OXIDATION-STATE ; MARS ; PETROGENESIS
收录类别	SCI
语种	英语
WOS记录号	WOS:000316963200011
公开日期	2014-01-08
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/9894]
专题	紫金山天文台_天体化学和行星科学实验室
作者单位	1.China Univ Geosci, Planetary Sci Inst, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Lab Astrochem & Planetary Sci, Nanjing 210008, Peoples R China 3.Univ Tennessee, Planetary Geosci Inst, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA
推荐引用方式 GB/T 7714	He, Qi,Xiao, Long,Hsu, Weibiao,et al. The water content and parental magma of the second chassignite NWA 2737: Clues from trapped melt inclusions in olivine[J]. METEORITICS & PLANETARY SCIENCE,2013,48(3):474-492.
APA	He, Qi,Xiao, Long,Hsu, Weibiao,Balta, J. Brian,McSween, Harry Y.,&Liu, Yang.(2013).The water content and parental magma of the second chassignite NWA 2737: Clues from trapped melt inclusions in olivine.METEORITICS & PLANETARY SCIENCE,48(3),474-492.
MLA	He, Qi,et al."The water content and parental magma of the second chassignite NWA 2737: Clues from trapped melt inclusions in olivine".METEORITICS & PLANETARY SCIENCE 48.3(2013):474-492.