本文選題：金銅礦 + 土壤地球化學(xué)��； 參考：《成都理工大學(xué)》2017年碩士論文

【摘要】：地堡那木崗金銅礦區(qū)位于西藏阿里改則縣多龍銅多金屬礦集區(qū)的西段,目前該礦區(qū)尚處于普查階段。本文采用勘查地球化學(xué)的理論和方法及規(guī)范要求,對礦區(qū)進行了1:2.5萬的土壤地球化學(xué)測量和系統(tǒng)采樣。分別采用ES、ICP-OES、AFS、GFAAS及POL方法檢測了樣品的10種元素組成:Ag、Mo、As、Pb、Cu、Zn、Bi、Sb、Au、W。在獲得樣品數(shù)據(jù)的基礎(chǔ)上,通過數(shù)據(jù)處理,計算了樣品的濃度克拉克值、變異系數(shù)、偏度等參數(shù),分析了元素的富集、離散和正態(tài)分布趨勢,并編制了元素地球化學(xué)圖。利用因子分析和聚類分析方法研究了元素的共生組合特征,從中提取三個主因子:(1)F01:Cu、Pb、Zn、As、Sb、Ag、Au;(2)F02:Pb、Mo、Bi;(3)F03:W、Bi、Ag,以及劃分出5個元素共生組合:(1)Cu、Zn、Sb元素組;(2)Au、Mo、Pb元素組;(3)W、Bi元素組;(4)Ag元素;(5)As元素。在對比了傳統(tǒng)迭代法之后,采用盒須圖法求取異常下限,并結(jié)合地質(zhì)成礦背景和區(qū)域地球化學(xué)特征,擬定出適合本區(qū)的元素背景值和異常下限。根據(jù)選定的異常下限,編制單元素異常圖。在分析研究異常特征基礎(chǔ)上,圈出6處以Cu、Au為主的綜合異常。其中,HS-1乙2、HS-2乙2、HS-6乙2具有較大的找礦潛力。綜合測區(qū)的地質(zhì)地球化學(xué)條件,在圈定綜合異常的基礎(chǔ)上,從中篩選出最有希望的Ⅱ-1和Ⅱ-2兩個找礦靶區(qū):Ⅱ-1靶區(qū)以尋找銅礦和熱液蝕變巖型金礦為主,靶區(qū)內(nèi)部發(fā)育有兩組構(gòu)造破碎帶,成礦地質(zhì)條件優(yōu)越,建議布置巖石地球化學(xué)剖面控制異常,以進一步縮小靶區(qū)范圍;Ⅱ-2靶區(qū)以找尋斑巖型銅礦為主,物化探異常在此處吻合度極高,建議先實施槽探工程進行控制,再根據(jù)見礦情況實施鉆探工程,揭露深部礦化情況。
[Abstract]:Dibao Namugang gold and copper mine is located in the west section of the Dulong copper polymetallic ore concentration area in Ali Ze County, Tibet. At present, the mining area is still in a general survey stage. Based on the theory, method and specification of exploration geochemistry, a soil geochemical survey of 1: 25 000 and systematic sampling has been carried out in this paper. The composition of 10 elements in the sample was determined by ESP-OESMA-AFSFAAS and POL, respectively. On the basis of the sample data, the concentration Clark value, coefficient of variation and deviation of the sample were calculated through data processing. The enrichment, dispersion and normal distribution of the elements were analyzed, and the geochemical map of the elements was compiled. The symbiotic assemblage characteristics of elements were studied by factor analysis and cluster analysis. Three main factors were extracted from the symbiotic assemblage of elements: 1 ~ (1) F ~ (01) ~ (1): CuPb ~ (1) Cu ~ (2 +) Zn ~ (1) B ~ (1) Zn ~ (2 +) B ~ (2 +) ~ (2) B _ (2) B _ (2) B _ (2) B _ (2) B _ (2) B _ (2) B ~ (2) ~ (+) ~ (3) ~ (3) ~ (3) ~ (3) ~ (5) ~ (+) ~ (1) ~ (1) Cu ~ (+) B ~ (+) ~ (3) ~ (3) ~ (3) ~ (5) ~ (-) -@@ After comparing the traditional iterative method, the lower limit of anomaly is obtained by using the box diagram method, and the element background value and anomaly lower limit suitable for this area are worked out by combining the geological metallogenic background and the regional geochemical characteristics. According to the selected exception lower limit, a single element anomaly map is compiled. On the basis of analyzing and studying the anomalous characteristics, 6 Synthetical anomalies, which are dominated by Cu-au, are set up. Among them, HS-1 and HS-2 / HS-2 / HS-6 / B2 have great prospecting potential. On the basis of delineating the comprehensive anomalies, the two most promising prospecting targets, 鈪，

本文編號：1856789