【摘要】：富西里地區(qū)位于黑龍江省北部大興安嶺新林區(qū)境內(nèi)，處于多寶山—黑河Cu-Mo-Au-Fe-Zn成礦帶內(nèi)。砂金資源豐富，早期探明的有倭勒根河、興隆溝、富西里等大型砂金礦，已知巖金礦床只有80年代發(fā)現(xiàn)的瓦拉里-黑龍溝。研究區(qū)屬大興安嶺森林沼澤景觀區(qū)，植被覆蓋較厚，巖金找礦一直沒有大的突破。 本次研究在1:5萬富西里地區(qū)區(qū)域地質(zhì)礦產(chǎn)調(diào)查基礎(chǔ)上，優(yōu)選了庫(kù)納森河上游西側(cè)的1:5萬水系沉積物HS-15、HS-16號(hào)異常，開展了1:2萬土壤地球化學(xué)測(cè)量、1:2萬地面高精度磁法測(cè)量、1:2萬激電中梯測(cè)量和激電測(cè)深綜合找礦工作。 通過綜合找礦及綜合研究，在庫(kù)納森河西查證區(qū)圈定了2處高磁異常，4處視電阻率異常，5處視極化率異常及7處土壤異常，其中的Au-2、Au-5、Au-6號(hào)土壤異常和ρs-3視電阻率、ηs-3號(hào)視極化率異常成礦條件較好，為金及多金屬找礦靶區(qū)。對(duì)物化探異常的套合部位進(jìn)行槽探工程揭露，發(fā)現(xiàn)了庫(kù)納森山東金銀礦點(diǎn)，在土壤Au-6號(hào)異常發(fā)現(xiàn)1條金銀礦體，經(jīng)刻槽取樣分析，金品位為1.17×10-6，銀品位為213×10-6；在土壤Au-2號(hào)異常高值點(diǎn)發(fā)現(xiàn)1條礦化蝕變帶，蝕變帶內(nèi)發(fā)現(xiàn)1條金礦（化）體，，依據(jù)激電測(cè)深成果，在112線、120線分別布設(shè)鉆孔對(duì)礦化蝕變帶進(jìn)行深部控制，發(fā)現(xiàn)在ZK11201中14.54-15.54m處，金品位達(dá)到1.95×10-6；在土壤Au-5號(hào)異常處發(fā)現(xiàn)1條礦化蝕變帶，蝕變帶內(nèi)發(fā)現(xiàn)1條金礦（化）體，平均品位為0.26×10-6，最高品位為0.38×10-6。 由此說明在森林覆蓋區(qū)采用大比例尺的物化探綜合方法查證水系沉積物異常在巖金或多金屬找礦中的可行性，同時(shí)說明該區(qū)找礦前景較好，值得今后工作中進(jìn)一步深入研究。
[Abstract]:The Fuxi area is located in the new forest area of Daxinganling in the north of Heilongjiang Province and is located in the Cu-Mo-Au-Fe-Zn metallogenic belt of Dobaoshan-Heihe River. The placer gold resources are abundant, and the early discovered gold deposits include the Wullergen River, Xinglonggou, Fuxili, etc. The known rock gold deposits are only Varari-Hailonggou discovered in the 1980s. The study area belongs to the forest and swamp landscape of Daxing'anling with thick vegetation cover and no great breakthrough in the prospecting of rock gold. On the basis of the investigation of regional geology and mineral resources in the area of 1: 50, 000 Fusili, this study has selected the HS-15,HS-16 anomaly in the western side of the upper reaches of the Cunaldson River. The geochemistry survey of 1: 20 million soil, the high precision magnetic survey of 1: 20 000 ground surface, the 1: 20 000 intermediate ladder survey and the comprehensive prospecting of IP sounding are carried out. Through comprehensive prospecting and comprehensive study, two high magnetic anomalies, four apparent resistivity anomalies, five apparent polarizability anomalies and seven soil anomalies have been delineated in the survey area west of Kunan River. The Au-2,Au-5,Au-6 soil anomaly, 蟻 s-3 apparent resistivity and 畏 s-3 apparent polarizability anomaly have good metallogenic conditions and are the gold and polymetallic prospecting targets. In the case of geophysical and geochemical anomalies, the gold and silver ore points of Shandong Province were discovered, and one gold and silver ore body was found in the soil Au-6 anomaly. The gold grade was 1.17 脳 10 ~ (-6) and the silver grade was 213 脳 10 ~ (-6). A mineralization alteration zone was found at the high value point of soil Au-2 anomaly, and a gold ore (mineralization) body was found in the alteration zone. According to the results of IP sounding, the deep control of the mineralization alteration zone was carried out in 112-line and 120-line respectively, and it was found at 14.54-15.54m in ZK11201. The gold grade is 1.95 脳 10 ~ (-6), and one mineralization alteration zone is found in the soil Au-5 anomaly, and one gold (mineralization) body is found in the alteration zone. The average grade is 0.26 脳 10 ~ (-6) and the highest grade is 0.38 脳 10 ~ (-6). It is shown that it is feasible to use large scale geophysical and geochemical prospecting method in the forest cover area to verify the feasibility of water system sediment anomaly in the prospecting of rock gold or polymetallic deposits. At the same time, the prospect of prospecting in this area is good, which is worthy of further study in the future work.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P631;P632

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