<P style="MARGIN: 0cm 0cm 0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan; mso-outline-level: 2" class=MsoNormal>pt; mso-bidi-font-family: 宋体; mso-font-kerning: 18.0pt" lang=EN-US>Analysis on the Ore-Forming Mechanism and Potential of Cu-Ni Sulfide Deposits in Baotan Area, pace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />place w:st="on">w:st="on">Guibei Region, w:st="on">Chinaplace>pace prefix = o ns = "urn:schemas-microsoft-com:office:office" />p>p>

详细信息   

• 责任者：Yang Zhenjun (School of Geoscience and Environmental Engineering ; Central South University ; Changsha 410083 ; China) ; Liu Jishun
• 刊名：Acta Mineralogica Sinica
• 出版年：2010
• 卷期：30(3)
• 关键词：铜矿 ; copper ores ; 镍矿 ; nickel ores ; 成矿规律 ; metallogenic regularity ; 广西 ; Guangxi
• 页码：p.379-388
• 图表：9 illus., 6 tables, 24 refs.
• 分类号：1001
• issnNo：ISSN1000-4734
• isbnNo：CN52-1045/P

摘要

<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal>pt" lang=EN-US>///The Cu-Ni sulfide deposits on the edge of Yangtze platform were formed during Proterozoic Period in Baotan region in northern Guangxi Province, pace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />w:st="on">place w:st="on">Chinaplace>. Abundant Cu-Ni sulfide deposits (or ore spots) are widely distributed in mafic-ultramafic intrusions of the Sipu group, with the chemical composition of the SiO₂ ranging from 41.86% to 49.35% , MgO ranging from 17.01% to 27.3% , Na₂O + K₂O ranging from 0.06% to 1.17% , and TiO₂ ranging 0.41% to 0.54%. The ratio of the M/F varies from 1.56 to 2.84. In aspects of S isotope, the value of the δ³⁴S isotope ranges from 4.2‰ to 15.43‰; the total abundance of the rare-earth elements (∑REE) varies from 45.05 × 10^-6 to 84.07 × 10^-6; ΣLREE/ΣHREE varies from 1.00 to 1.93; the ratio of LaN /YbN ranges from 1.19 to 5.74; δEu ranges from 0.54 to 1.14. It is showed by mentioned above that many geologic characteristics, geochemical characteristics and isotope characteristics on Cu-Ni sulfide deposits in Sipu region were uniform in many aspects and had good geological forming-ore foundation and prospected potential of magmatic Cu-Ni sulfide deposits, compared with other domestic major magmatic Cu-Ni sulfide deposits.pace prefix = o ns = "urn:schemas-microsoft-com:office:office" />p>p>