全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
矿床地质  2008 

豫西前河构造蚀变岩型金矿成矿过程中的流体-岩石反应

Keywords: 地球化学,金矿床,流体包裹体,构造蚀变岩,流体_岩石反应,前河

Full-Text   Cite this paper   Add to My Lib

Abstract:

前河金矿区位于华北地台南缘,赋存在中元古界熊耳群安山岩和英安岩中,矿体受断裂破碎带控制。含矿热液在迁移过程中与围岩发生了广泛的流体_岩石反应而引起热液蚀变。本区石英中有4种类型的流体包裹体,均一温度范围为145~331℃,其中含CO2包裹体的完全均一温度主要分布在中_高温区。成矿流体的密度和压力变化范围分别是0.68~0.94g/cm3和(367.01~896.55)×105Pa。金大量沉淀成矿时的流体特征为:温度213~260℃、密度0.80~0.89g/cm3和压力(502.86~710.57)×105Pa。流体相为SO2-4>Na+>Cl->K+型,CO2/H2O比值及N2、H2S、Ar、C2H6等挥发分的含量明显增高,f(CO2)、f(H2S)、f(CH4)和Eh值增大;f(O2)、f(H2O)和pH值减小。在青磐岩化安山岩的基础上发生的流体-岩石反应是造成本矿床金沉淀成矿的最主要原因。

References

[1]  Ba A M, Ma H Y, Zhang S S and Tian X Q. 2006. Ore characteristics and ore-searching direction of Qianhe gold mine in Singxian County, Henan Province[J]. Contribution to Geology and Mineral Resources, 21(2) : 100-114
[2]  Coo Ye. 20007. Mineral geochemistry and deep prediction of the Qianhe gold mine in Henan(master candidate paper)[D]. Superviser: Li S R. Beijing: China Univ. Geosci. 83p
[3]  Chen Y J and Zhao Y C. 1997. Geochemical Characteristics and evolution of REE in the early Precambrian sediments: Evidences from the southern margin of the North China Craton[J]. Episodes, 20: 109-116.
[4]  Fan H R, Xie Y H, Zhao R and Wang Y L. 1994. Stable isotope geochemistry of rocks and gold deposit in the Xiong\\'ershan area westem Henan Province[J]. Contribution to Geology and Mineral Resources, 9(1) : 54-64
[5]  Fan H R, Xie Y H and Wang Y L. 1998. Fluid-rock interaction during mineralization of the Shanggong structure-controlled alteration-type gold deposit in western Henan Province, central China[J]. Acta Petrolngica Sinica, 14(4): 529-541
[6]  Fan W L L, Wang S Y and Tian Y F. 1995. Experimental studies on the solubility and transport of gold in alkaline aqueous SiO2-rich solutions[J]. Acta Mineralogica Sinica, 15(2) : 176-183
[7]  HUFF, FanHR, Shen K, Zhai M G, Jin CWandChenXS. 2005. Nature and evolution of ore-forming fluids in the Rushan lode gold deposit, Jiaodong Peninsula of eastern China[J]. Acta Petrologica Sinica, 21(5) : 1329-1338
[8]  Wilkinson J J. 2001. Fluid inclusions in hydrothermal ore deposit [J]. Lithos, 55: 229-272.
[9]  Ken I H, Tohru M and Hisao S. 2001. Precipitation of gold in a low- sulfdation epithermal gold deposit insights from a submillimeterscale oxygen isotope analysis of vein quartz[J]. Econ. Geol. , 96: 211-216.
[10]  Li L, Qing M and Chen X. 1999. Geochemical features of Qiardae gold deposit, Henan[J]. Gold Geol., 5(3): 75-80
[11]  Li S R and Shao K Z. 1991. The typomorphology of fluid inclusions in quartz from Qiyugou gold deposit[J]. Geosci. , 5(4) : 415-422
[12]  Li S R, Chen G Y, Shao W and Sun D S. 1993. Genetic mineralogy of Rushan gold deposit in Jiaodong Peninsula [M]. Beijing: Geol. Pub. House. 65-78
[13]  Li S R. 1994. On the affinity of Mesozoic calc-alkaline granitoids in the Luoning-Songxian area, western Henan Province[J]. Geol. Rev. , 40(6) : 489-493
[14]  Li S R. 1995. A metallogenic series of crypto-explosive breccia type- dominated gold deposit[J]. Geological Exploration for Non-Ferrous Metals, 4(5) : 271-277
[15]  Li Y F, Mao J W and Hu H, Bai F J, Li H M, Li M W, Guo B J and Ye H S. 2005. The fluid inclusions and their He-Ar-S-H-O isotopic compositions and tracing to the source of ore-forming fluids for Gongyu gold deposit, Western Henan Province[J]. Acta Petrologica Sinica, 21(5) : 1347-1358
[16]  Liu B and Shen K . Thermodynamics of fluid inclusion [M]. Beijing: Geol. Pub. House.
[17]  Liu H Y, Hu S X and Zhou S Z. 1998. A study of rock-controling and ore-controlling role of the Machaoying fault in western Henan Province[J]. Mineral Deposits, 17(1): 70-81
[18]  Lu H Z, Fan H R and Ni P, Ou G X, Shen K and Zhang W H. 2004. Fluid inclusion[M]. Beijing: Sci. Press.
[19]  Luo M J, Li S M and Lu X X. 2000. Metallogenic series of main ore deposit and metallogeny in Henan Province[M]. Beijing: Geol. Pub. House.
[20]  Ma Z D. 1990. Regional geochemistry of gold and molybdenum of two metallogenic series in the southern margin of North China platform, collected works of regional geochemistry of Qinba area [M]. Wuhan: China Univ. Geosci. Press.
[21]  更多...
[22]  Pei Y H, Yan H Q and Zhang M Y. 2006. Rock and mineral characteristics of Qiarthe gold deposit in Henan [J]. Mineral Resources & Geology, 20(4-5): 513-518
[23]  Phillips G N and Evans K A. 2004. Role of CO2 in the formation of gold deposit[J]. Nature, 429: 860-863.
[24]  Wang Y R and Hu S X. 2000. Study on gold rernobilization in process of potassium metasomatic alteration: Taking gold deposit in the North China platform as example[J]. Science in China (Series D), 30 (5) : 499-509
[25]  Yan J S, Pang Z S and Yue Z S. 2005. Tectonic character and gold metallogeny in the Machaoying fault zone[M]. Henan: Yellow River Water Resources Press.
[26]  Yuan H G and Pei Y H. 1997. The characteristics of the wall rock and host rock of the orthophyric tectonic altered rock-type gold deposit in Qianhe area[J]. Henan Geol. , 15 ( 1 ) : 24-28
[27]  Zhang Y H, Zhang S H, Han Y G and Zhang H J. 2006. Strik-slip features of the Machaoying fault zone and its evolution in the Huaxiong terrane, Southern North China craton[J]. J. Jilin Univ. (Earth Science Edition), 36(2): 169-176

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133