南北地区不同金矿床稀土元素特征差异分析  

Variance Analysis on The REE Features of Different Gold Deposits in North and South Areas of China

作　　者：吴二[1,2] 陈远荣 蓝妮拉[2,3] 卢月玲[2] 周峰[2] 张冠清 廖德好[2] 林立保 

机构地区：[1]广西矿冶与环境科学实验中心 [2]桂林理工大学地球科学学院 [3]广西隐伏金属矿产勘查重点实验室

出　　处：《金属矿山》2013年第11期103-105,109,共4页Metal Mine

基　　金：国家自然科学基金项目(编号:001102210116)

摘　　要：为了解中国南北地区不同金矿床成矿特点方面的差异,利用稀土元素的示踪性,对南北地区不同金矿床的稀土元素特征进行了统计分析。结果显示,不同地区金矿矿石中稀土元素的总量差异较显著,最高为江西金山金矿,稀土总量为166.39×10-6,最低为黑龙江乌拉嘎金矿,稀土总量为3.47×10-6,由此推断不同地区金矿床的成矿物质来源的深度不同;大部分金矿床显示轻稀土元素较明显富集,轻重稀土分异程度较高,稀土配分曲线向右倾斜,但河南杨砦峪金矿与黑龙江乌拉嘎金矿的稀土配分曲线形态较为平缓,轻重稀土分异程度较低;黑龙江乌拉嘎金矿、辽宁白云金矿具有铕正异常,其余金矿床为铕负异常,这可能是因为不同金矿床成矿环境是不一样的。In order to investigate the differences of gold deposits metallogenic characteristics in north and south areas of China, using the tracer ability of rare earth elements, the paper analyzes statistically the REE features of different gold de- posits in north and south China. The results show that there is a significant difference for total amount of rare earth elements in different parts of the gold ore. The highest is in Jinshan gold mine of Jiangxi province, with the total amount of REE 166. 39 x 10-6 ,while the lowest is in Wulaga gold mine of Heilongjiang province,with ~ REE of 3.47 x 10-6 ,which con- cluded that the depth of ore-forming materials of gold deposits in different regions is not the same ; Most of the gold deposits exhibit significant enrichment of light rare earth elements （LREE） , the fractionation between HREE and LREE is higher, and the curves of REE distribution tilted to the right. But the REE patterns is more gentle in the gold mine of Yangzhaiyu in Henan province and Wulaga in Heilongjiang province, and the fractionation between HREE and LREE being not pro- nounced. Heilongjiang Wulaga and Liaoning Baiyun gold deposits have Eu positive anomaly while the remaining gold deposit gold deposits have Eu negative anomaly. The reasons for these may be that different deposits have different metallogenic en- vironment.

关 键 词：金矿 稀土元素 示踪性 成矿特点 

分 类 号：P618.44[天文地球—矿床学]