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	Petrographic features of segment ii of the jinchuan intrusion, gansu, and its fractional crystallization
	Li ShiBin1,2; Song XieYan1; Hu RuiHong1; Chen LieMeng1,2; Nie XiaoYong1,2
刊名	Acta petrologica sinica
	2007-10-01
卷号	23期号:10页码:2553-2560
关键词	Jinchuan cu-ni sulfide deposit Segment ii Petrographic features Phase diagram Fractional crystallization
ISSN号	1000-0569
通讯作者	Li shibin(lishibin@mails.gucas.ac.cn)
英文摘要	Segment ii of the jinchuan intrusion is composed mainly of lherzolite and sulfide peridotite. fine- and medium-grained harzburgite occurs as a "roof pendant" at the top of the intrusion and shows a short-distance gradational relationship with the medium-grained lherzolite, reflecting the feature of multiple injections of magma or "crystal mush". based on the petrographic relationships between the minerals of various rock facies, combined an analysis of the thermodynamics phase diagrams, the authors think that the crystallization sequence of the rock-forming minerals in segment 11 is spinel, olivine, orthopyroxene, clinoyroxene and plagioclase. reaction between olivine and parent magma caused olivine crystals to become rounded. in addition, the grain size of cumulus olivine in the sulfide peridotite and sulfide harzburgite is obviously smaller than that of olivine in the sulfide lherzolite, implying that abundant sulfide ore pulp had gathered at the bottom of the deep magma chamber before the "crystal mush" was intruded into the shallow magma chamber.
WOS关键词	CU SULFIDE DEPOSIT ; CHINA ; GENESIS
WOS研究方向	Geology
WOS类目	Geology
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000254139000023
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2380098
专题	中国科学院大学
通讯作者	Li ShiBin
作者单位	1.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550002, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li ShiBin,Song XieYan,Hu RuiHong,et al. Petrographic features of segment ii of the jinchuan intrusion, gansu, and its fractional crystallization[J]. Acta petrologica sinica,2007,23(10):2553-2560.
APA	Li ShiBin,Song XieYan,Hu RuiHong,Chen LieMeng,&Nie XiaoYong.(2007).Petrographic features of segment ii of the jinchuan intrusion, gansu, and its fractional crystallization.Acta petrologica sinica,23(10),2553-2560.
MLA	Li ShiBin,et al."Petrographic features of segment ii of the jinchuan intrusion, gansu, and its fractional crystallization".Acta petrologica sinica 23.10(2007):2553-2560.

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