Physicochemical Processes in the Magma Chamber under the Black Mountain Porphyry Cu-Au Deposit, Philippines: Insights from Mineral Chemistry and Implications for Mineralization

doi:10.5382/congeo.2018.4544

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院矿产资源研究重点实验室

	Physicochemical Processes in the Magma Chamber under the Black Mountain Porphyry Cu-Au Deposit, Philippines: Insights from Mineral Chemistry and Implications for Mineralization
	Cao, MingJian 1,2,3,4; Hollings, Pete 4; Cooke, David R.5,6; Evans, Noreen J.3; McInnes, Brent I. A.3; Qin, KeZhang 1,2; Li, GuangMing 1,2; Sweet, Gabe 4; Baker, Mike 5,6
刊名	ECONOMIC GEOLOGY
	2018
卷号	113 期号:1 页码:63-82
ISSN号	0361-0128
DOI	10.5382/congeo.2018.4544
文献子类	Article
英文摘要	The Black Mountain porphyry Cu-Au deposit in the Baguio district, Northern Luzon (Philippines) is associated with late Miocene to Pliocene intrusive rocks that retain primary crystallization signatures, providing an excellent natural laboratory to study the details of magma chamber processes. Each igneous phase contains disequilibrium textures, including resorptive textures in plagioclase and distinct core rim textures in amphibole. High crystallization temperatures and pressures in felsic (similar to 880 degrees C and similar to 2.8 kbar) and mafic (similar to 1,030 degrees C and similar to 7.7 kbar) rocks recorded by amphibole phenocrysts reflect crystallization in the magma chamber. Amphibole in felsic rocks aged 6.39 +/- 0.49 to 2.83 +/- 0.23 Ma have similar crystallization temperatures and pressures, suggesting a long-lived and hot felsic magma chamber under the Black Mountain deposit. Four independent oxybarometers, including amphibole, coexisting magnetite-ilmenite, magmatic anhydrite, and zircon, consistently show a high oxidation state of >NNO+1 for the felsic magma and similar to NNO+0.7 for the mafic magma. Element profiles across phenocrystic plagioclase display repeated oscillatory variations of Ca, Fe, and Sr contents with large anorthite variations and a positive correlation between CaO and FeO. The amphibole is classified as group 1 Mg hornblende to tschermakite-hornblende in felsic rocks and group 2 Mg hastingsite in mafic rocks. The group 1 amphiboles show a variety of major and trace element variations from core to rim in disequilibrated grains and transitional compositions to group 2 Mg hastingsite. Both mineral textures and chemistry recorded by phenocrysts of plagioclase and amphibole indicate repeated mafic magma recharge in the felsic magma chamber. The common occurrence of rounded or elongated sulfide inclusions in the megacrystic amphibole from the mafic rocks (2.81 +/- 0.15 Ma) suggests a greater enrichment of Cu in mafic rocks relative to the ore-forming porphyries (2.91-2.83 Ma). This is also consistent with higher Cu contents (3.4 +/- 0.9 ppm) in the megacrystic amphibole from the mafic rocks relative to amphibole in felsic rocks (1.0 +/- 0.2 ppm) and may indicate up to 3.4 times higher Cu in the mafic magma relative to felsic magma. Therefore, large-scale mafic magma recharge (particularly at similar to 2.8 Ma), likely introduced ore-forming metals to the long-lived felsic magma chamber, further contributing to the fertility of the felsic rocks and ultimately to Cu-Au mineralization at the Black Mountain deposit.
WOS关键词	MELT PARTITION-COEFFICIENTS ; ZIRCON TRACE-ELEMENT ; NEW-MEXICO USA ; BAGUIO DISTRICT ; WESTERN JUNGGAR ; ORE FLUIDS ; OXIDATION-STATE ; COPPER-DEPOSITS ; OXYGEN FUGACITY ; SANTA-RITA
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SOC ECONOMIC GEOLOGISTS, INC
WOS记录号	WOS:000429245800004
资助机构	Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; AngloGold Ashanti ; AngloGold Ashanti ; AngloGold Ashanti ; AngloGold Ashanti ; Anglo American ; Anglo American ; Anglo American ; Anglo American ; Barrick ; Barrick ; Barrick ; Barrick ; Buenaventura ; Buenaventura ; Buenaventura ; Buenaventura ; Codelco ; Codelco ; Codelco ; Codelco ; Dundee ; Dundee ; Dundee ; Dundee ; Equinox ; Equinox ; Equinox ; Equinox ; Freeport-McMoran ; Freeport-McMoran ; Freeport-McMoran ; Freeport-McMoran ; Gold Fields ; Gold Fields ; Gold Fields ; Gold Fields ; Kinross ; Kinross ; Kinross ; Kinross ; MMG ; MMG ; MMG ; MMG ; Newcrest ; Newcrest ; Newcrest ; Newcrest ; Newmont ; Newmont ; Newmont ; Newmont ; St. Barbara Rio Tinto ; St. Barbara Rio Tinto ; St. Barbara Rio Tinto ; St. Barbara Rio Tinto ; Teck ; Teck ; Teck ; Teck ; Vale ; Vale ; Vale ; Vale ; Xstrata ; Xstrata ; Xstrata ; Xstrata ; AQ44 Australian Education Investment Fund program ; AQ44 Australian Education Investment Fund program ; AQ44 Australian Education Investment Fund program ; AQ44 Australian Education Investment Fund program ; National Natural Sciences Foundation of China(41672090 ; National Natural Sciences Foundation of China(41672090 ; National Natural Sciences Foundation of China(41672090 ; National Natural Sciences Foundation of China(41672090 ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; 41402081) ; 41402081) ; 41402081) ; 41402081) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; AngloGold Ashanti ; AngloGold Ashanti ; AngloGold Ashanti ; AngloGold Ashanti ; Anglo American ; Anglo American ; Anglo American ; Anglo American ; Barrick ; Barrick ; Barrick ; Barrick ; Buenaventura ; Buenaventura ; Buenaventura ; Buenaventura ; Codelco ; Codelco ; Codelco ; Codelco ; Dundee ; Dundee ; Dundee ; Dundee ; Equinox ; Equinox ; Equinox ; Equinox ; Freeport-McMoran ; Freeport-McMoran ; Freeport-McMoran ; Freeport-McMoran ; Gold Fields ; Gold Fields ; Gold Fields ; Gold Fields ; Kinross ; Kinross ; Kinross ; Kinross ; MMG ; MMG ; MMG ; MMG ; Newcrest ; Newcrest ; Newcrest ; Newcrest ; Newmont ; Newmont ; Newmont ; Newmont ; St. Barbara Rio Tinto ; St. Barbara Rio Tinto ; St. Barbara Rio Tinto ; St. Barbara Rio Tinto ; Teck ; Teck ; Teck ; Teck ; Vale ; Vale ; Vale ; Vale ; Xstrata ; Xstrata ; Xstrata ; Xstrata ; AQ44 Australian Education Investment Fund program ; AQ44 Australian Education Investment Fund program ; AQ44 Australian Education Investment Fund program ; AQ44 Australian Education Investment Fund program ; National Natural Sciences Foundation of China(41672090 ; National Natural Sciences Foundation of China(41672090 ; National Natural Sciences Foundation of China(41672090 ; National Natural Sciences Foundation of China(41672090 ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; 41402081) ; 41402081) ; 41402081) ; 41402081) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; AngloGold Ashanti ; AngloGold Ashanti ; AngloGold Ashanti ; AngloGold Ashanti ; Anglo American ; Anglo American ; Anglo American ; Anglo American ; Barrick ; Barrick ; Barrick ; Barrick ; Buenaventura ; Buenaventura ; Buenaventura ; Buenaventura ; Codelco ; Codelco ; Codelco ; Codelco ; Dundee ; Dundee ; Dundee ; Dundee ; Equinox ; Equinox ; Equinox ; Equinox ; Freeport-McMoran ; Freeport-McMoran ; Freeport-McMoran ; Freeport-McMoran ; Gold Fields ; Gold Fields ; Gold Fields ; Gold Fields ; Kinross ; Kinross ; Kinross ; Kinross ; MMG ; MMG ; MMG ; MMG ; Newcrest ; Newcrest ; Newcrest ; Newcrest ; Newmont ; Newmont ; Newmont ; Newmont ; St. Barbara Rio Tinto ; St. Barbara Rio Tinto ; St. Barbara Rio Tinto ; St. Barbara Rio Tinto ; Teck ; Teck ; Teck ; Teck ; Vale ; Vale ; Vale ; Vale ; Xstrata ; Xstrata ; Xstrata ; Xstrata ; AQ44 Australian Education Investment Fund program ; AQ44 Australian Education Investment Fund program ; AQ44 Australian Education Investment Fund program ; AQ44 Australian Education Investment Fund program ; National Natural Sciences Foundation of China(41672090 ; National Natural Sciences Foundation of China(41672090 ; National Natural Sciences Foundation of China(41672090 ; National Natural Sciences Foundation of China(41672090 ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; 41402081) ; 41402081) ; 41402081) ; 41402081) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; Australian Mineral Industry Research Association (AMIRA) International project(P765A) ; AngloGold Ashanti ; AngloGold Ashanti ; AngloGold Ashanti ; AngloGold Ashanti ; Anglo American ; Anglo American ; Anglo American ; Anglo American ; Barrick ; Barrick ; Barrick ; Barrick ; Buenaventura ; Buenaventura ; Buenaventura ; Buenaventura ; Codelco ; Codelco ; Codelco ; Codelco ; Dundee ; Dundee ; Dundee ; Dundee ; Equinox ; Equinox ; Equinox ; Equinox ; Freeport-McMoran ; Freeport-McMoran ; Freeport-McMoran ; Freeport-McMoran ; Gold Fields ; Gold Fields ; Gold Fields ; Gold Fields ; Kinross ; Kinross ; Kinross ; Kinross ; MMG ; MMG ; MMG ; MMG ; Newcrest ; Newcrest ; Newcrest ; Newcrest ; Newmont ; Newmont ; Newmont ; Newmont ; St. Barbara Rio Tinto ; St. Barbara Rio Tinto ; St. Barbara Rio Tinto ; St. Barbara Rio Tinto ; Teck ; Teck ; Teck ; Teck ; Vale ; Vale ; Vale ; Vale ; Xstrata ; Xstrata ; Xstrata ; Xstrata ; AQ44 Australian Education Investment Fund program ; AQ44 Australian Education Investment Fund program ; AQ44 Australian Education Investment Fund program ; AQ44 Australian Education Investment Fund program ; National Natural Sciences Foundation of China(41672090 ; National Natural Sciences Foundation of China(41672090 ; National Natural Sciences Foundation of China(41672090 ; National Natural Sciences Foundation of China(41672090 ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; International Postdoctoral Exchange Fellowship Program of China(20150085) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; Key Laboratory of Mineral Resources, Chinese Academy of Sciences(KLMR2015-08) ; 41402081) ; 41402081) ; 41402081) ; 41402081)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88359]
专题	地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者	Cao, MingJian
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Curtin Univ, John de Laeter Ctr TIGeR Appl Geol, Perth, WA 6845, Australia 4.Lakehead Univ, Dept Geol, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada 5.Univ Tasmania, Transforming Min Value Chain, Australia Res Council Ind Transformat Res Hub, Hobart, Tas 7001, Australia 6.Univ Tasmania, Center Excellence Ore Deposits CODES, Private Bag 126, Hobart, Tas 7001, Australia
推荐引用方式 GB/T 7714	Cao, MingJian,Hollings, Pete,Cooke, David R.,et al. Physicochemical Processes in the Magma Chamber under the Black Mountain Porphyry Cu-Au Deposit, Philippines: Insights from Mineral Chemistry and Implications for Mineralization[J]. ECONOMIC GEOLOGY,2018,113(1):63-82.
APA	Cao, MingJian.,Hollings, Pete.,Cooke, David R..,Evans, Noreen J..,McInnes, Brent I. A..,...&Baker, Mike.(2018).Physicochemical Processes in the Magma Chamber under the Black Mountain Porphyry Cu-Au Deposit, Philippines: Insights from Mineral Chemistry and Implications for Mineralization.ECONOMIC GEOLOGY,113(1),63-82.
MLA	Cao, MingJian,et al."Physicochemical Processes in the Magma Chamber under the Black Mountain Porphyry Cu-Au Deposit, Philippines: Insights from Mineral Chemistry and Implications for Mineralization".ECONOMIC GEOLOGY 113.1(2018):63-82.