The crystallochemistry characteristics and genetic analysis of amphibole in the sediments of the Huanghe River
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摘要: 通过对黄河极细砂中普通角闪石单矿物的电子探针测试,采用以23个氧为标准,计算了69个角闪石的阳离子系数,由化学计量限制估算其Fe3+、Fe2+浓度平均值和相应的其他阳离子数值,产生它们可能的晶体结构分子式以及有关的晶体化学特征数值。研究表明:虽然黄河角闪石主要化学组成分异性较大,但都具有高硅、高钙、镁、低碱性的特征;晶体化学分类都属于钙角闪石组,出现10个角闪石种,种类相对简单,投影集中,以镁角闪石为主,占50%以上,其次是浅闪石,其晶体化学特征可作为与其它沉积体角闪石的鉴别依据;通过几种晶体化学图件判别,角闪石成因以中酸性岩浆岩为主,其次是变质成因,岩浆成因的角闪石的生成岩浆以壳幔混合源为主,幔源次之,变质成因的角闪石生成于中温、中压以下的变质环境。黄河角闪石以其最常见的种类和成因为特征,表明其原始来源的广泛性和稳定性,可作为我国北方上地壳陆源沉积物的标准化物质。Abstract: The chemical composition of amphibole in the surface sediments of the Huanghe River is studied by means of the electron microprobe analysis.The cation coefficients of the 69 amphibole are calculated on the basis of oxygen measurement. Limited by the stoichiometry,the average coefficients of Fe3+, Fe2+ and other relevant cation are estimated. According to the cation coefficients, the possible molecular formulas of the crystal structure and corresponding crystal-chemical characteristics are obtained. The results show that although the amphiboles of the Huanghe River have a large variation in the chemical composition, they are all characterized by high content’s silicon, calcium, magnesium and low alkalinity. According to crystallochemical classification, the 69 amphiboles whose spices are relatively simple all belong to the calcic-amphibole. It contains ten kinds of hornblende; the projected spots are concentrating in the graphics of classification of the calatic amphiboles, including more than 50% of magnesiohornblende and small amount of edenite. The characteristics of crystallochemistry of these can provide identification basis for distinguishing the Huanghe River sediments form other sedimentary body. The crystallochemistry-genesis illustration demonstrates that the 69 hornblendes are mainly derived from the intermediate-acidic magmatites, and then are metamorphic origin rocks. And the magmatic origin type of amphiboles is originated from a crust-mantle mixed source (mainly) and a mantle source (secondly), while the metamorphic genesis origin type comes in metamorphic environments below middle pressures and middle temperatures. Amphibole in the Huanghe River whose species and features are most common indicate that their original sources are universal and stable, and can be used as standardized material in the upper crustal terrigenous sediments in northern China.
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Key words:
- amphibole /
- crystallochemistry /
- genetic analysis /
- provenance /
- Huanghe River
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申顺喜,陈丽蓉,徐文强. 黄海沉积物中的矿物组合及其分布规律的研究[J].海洋与湖沼,1984,15(3):240-250. 王先兰,马克俭,陈建林,等. 东海沉积物碎屑矿物特征的研究[J]. 中国科学:B辑,1985(5):474-482. 孙白云. 黄河、长江和珠江三角洲沉积物中碎屑矿物的组合特征[J].海洋地质与第四纪地质,1990,10(3): 23-34. Derkachev A N,Nikolaeva N A. Associations of heavy minerals in sediments of western part of South China Sea[J]. Geology,1999,14(4): 503-534. Morton A C, Hallsworth C R. Processes controlling the composition of heavy mineral assemblages in sandstones[J]. Sedimentary Geology, 1999, 124: 3-29. 王昆山,石学法,林振宏. 南黄海和东海北部陆架重矿物组合分区及来源[J]. 海洋科学进展,2003,21(1):31-40. 金秉福,林振宏. 东海外陆架Q43岩心末次冰期矿物学特征及其古环境意义[J].海洋学报,2003,25(2s):177-185. Morton A C, Whitham A G, Fanning C M. Provenance of Late Cretaceous to Paleocene submarine fan sandstones in the Norwegian Sea: Integration of heavy mineral, mineral chemical and zircon age data[J]. Sedimentary Geology, 2005, 182:3-28. Morton A C. A new approach to provenance studies: electron microprobe analysis of detrital garnets from middle Jurassic sandstones of the northern North Sea[J]. Sedimentology, 1985, 32: 553-566. Morton A C. Geochemical studies of detrital heavy minerals and their application to provenance research[M]. Geological Society Special Publication, 1991, 57: 31-45. Garcia D, Ravenne C, Marechal B, et al. Geochemical variability induced by entrainment sorting: quantified signals for provenance analysis[J]. Sedimentary Geology, 2004, 171: 113-128. Mange M A, Morton A C. Geochemistry of heavy minerals[J]. Developments in Sedimentology,2007, 58: 345-391. 谢静,丁仲礼. 中国东北部沙地重矿物组成及沙源分析[J].中国科学 D 辑: 地球科学,2007,37(8):1065-1072. Jae IL Leea, Peter D Clifta, Graham Laynea, et al. Sediment flux in the modern Indus River inferred from the trace element composition of detrital amphibole grains[J]. Sedimentary Geology, 2003, 160: 243-257. 杨群慧,林振宏,张富元,等. 南海东部表层沉积物中普通角闪石和磁铁矿的特征及其成因[J]. 海洋地质与第四纪地质,2004,24(2):29-35. Bong W S K, Mastumura K, Yokoyama K, et al. Provenance study of early and middle bronze age pottery from Kaman-Kalehoyuk, Turkey, by heavy mineral analysis and geochemical analysis of individual hornblende grains[J]. Journal of Archaeological Science, 2010, 37: 2165-2178. 林晓彤,李巍然,时振波. 黄河物源碎屑沉积物的重矿物特征[J].海洋地质与第四纪地质,2003,23(3):17-21. 王中波,杨守业,李日辉,等. 黄河水系沉积物碎屑矿物组成及沉积动力环境约束[J].海洋地质与第四纪地质,2010,30(4):73-85. 赵广涛,王文正. 崂山花岗岩中角闪石成分的变化及其意义[J]. 青岛海洋大学学报,1998,28(4):609-614. 杨富贵,王中刚,刘丛强,等. 西北准噶尔地区碱性花岗岩体中角闪石的地质地球化学意义[J]. 矿物学报,1999,19(1):70-76. 吕志成,段国正,郝立波,等. 大兴安岭中南段燕山期两类不同成矿花岗岩类角闪石的化学成分及其成岩成矿意义[J]. 矿物岩石,2003,23(1):5-10. 牛利锋,张宏福. 南太行山地区中基性侵入岩中角闪石的矿物学及其成因[J].大地构造与成矿学,2005,29(2):269-277. 王濮,潘兆橹,翁玲宝,等. 系统矿物学[M]. 北京:地质出版社,1982:488-491. 刘劲鸿. 角闪石成因矿物族及其应用[J]. 长春地质学院学报,1986(1):41-48. 郑巧荣. 由电子探针分析值计算Fe3+和Fe2+[J].矿物学报,1983(1):55-62. 林文蔚,彭丽君. 由电子探针分析数据估算角闪石、黑云母中的Fe3+、Fe2+[J]. 长春地质学院学报,1994,24(2):155-162. Schumacher John C. 角闪石电子探针分析数据中三价铁比值的估算[J]. 岩石矿物学杂志,2001,20(2):189-207. Leake B E, Woolley A R, Birch W D, et al. Nomenclature of amphiboles: report of the subcommittee on amphiboles of the international mineralogical association, commission on new minerals and mineral names[J]. Mineralogical Magazine, 1997, 61: 295-321. 陈光远,孙岱生,殷辉安. 成因矿物学与找矿矿物学[M]. 重庆:重庆出版社,1987:234-235. 薛君治,白学让,陈武. 成因矿物学[M]. 北京:中国地质大学出版社,1990:1-161. 谢应雯,张玉泉. 横断山区花岗岩类中角闪石的标型特征及成因意义[J]. 矿物学报,1990,10(1):35-45. Johnson M C, Rutherford M J. Experimental calibration of the aluminum-in-hornblende geobarometer with application to Long Valley Caldera (California) volcanic rocks[J]. Geology, 1989, 17: 837-841. 贺秀斌,唐克丽. 黄土高原全新世黄土重矿物研究及其土壤发生学意义[J].地理科学,1996,16(2):159-163. 刘东生. 黄土的物质成分与结构[M]. 北京:科学出版社,1966:46-55. 刘东生. 黄土与环境[M]. 北京:科学出版社,1985:208-218. 李秉成,孙建中. 中国黄土与环境[M]. 西安:陕西科学技术出版社,2005:45-59. 王克鲁,裴静娴. 山西隰县午城黄土矿物成分.第四纪地质问题[M]. 北京:科学出版社,1964:89-110.
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