赣东北中—新生代超基性岩与金刚石找矿前景

赣东北中—新生代超基性岩与金刚石找矿前景

楼法生，黄志忠，吴新华，罗小洪，吴明仁，谢清辉

江西省地质调查院，江西向塘330201

收稿日期:2001-03-20 修回日期:2001-03-20 出版日期:2001-03-20 发布日期:2001-03-20

Analysis on Mesozoic-Caenozoic Ultrabasic Rocks in Northeast Jiangxi Province and Perspective of Diamond Prospecting

LOU Fa-sheng, HUANG Zhi-zhong, WU Xin-hua, LUO Xiao-hong, WU Ming-ren, XIE Qing-hui

Jiangxi Institute of Geological Survey Xiangtang, Jiangxi Province 330201

Received:2001-03-20 Revised:2001-03-20 Online:2001-03-20 Published:2001-03-20

摘要/Abstract

摘要： 赣东北地区发现有中－新生代超基性岩。超基性岩侵入白垩系红色盆地中，主要有玻基辉橄岩、角砾状玻基辉橄岩等。角砾状玻基辉橄岩呈岩筒状。岩石化学分析结果显示，该处超基性岩中，SiO2含量为38．19％－44．28％，K2O＋Na2O含量为2．01％－2．93％，MgO含量为7．67％－11．10％，CaO含量为8．25％－12．67％，Al2O3含量为11．94－14．51％，与曲型的玻基辉橄岩岩石化学成分相近。赣东北地区中－新生代超基性岩的发现，为重新分析评价赣东北地区金刚石找矿前景提供了重要的信息。

Abstract: The ultrabasic rocks of Mesozoie-Caenozoic era have been found in the northeastern Jiangxi Province They are mainly 1imburgite and breccia-like 1imburgite and intruded the Cretaceous red basins. The breccia-like 1imburgite is pipe shaped. The results of petrochemical Analyses indicate that these ultrabasic rocks contain 38.19～44.28% Si02，2.01～2.93% K20+Na2O，7.67～11.10% MgO，8.25-12.67% CaO and 11.94-14.51% Al2O3 etc. These ultrabasic rocks aye quite similar to the typical limburgite in chemical composition. The discovery of Mesomic-Caenomic ultrabasic rocks provides an important information for reevaluation of the perspective for the diamond prospecting in the northeastern Jiangxi Province.

楼法生，黄志忠，吴新华，罗小洪，吴明仁，谢清辉. 赣东北中—新生代超基性岩与金刚石找矿前景[J]. J4.

LOU Fa-sheng, HUANG Zhi-zhong, WU Xin-hua, LUO Xiao-hong, WU Ming-ren, XIE Qing-hui. Analysis on Mesozoic-Caenozoic Ultrabasic Rocks in Northeast Jiangxi Province and Perspective of Diamond Prospecting[J]. J4.