本文選題：找礦探討 + 礦體特征　； 參考：《成都理工大學(xué)》2015年碩士論文

【摘要】：西藏鐵格隆南銅(金)礦床是西藏發(fā)現(xiàn)的首個(gè)典型淺成低溫?zé)嵋旱V床,在近兩年開展商業(yè)勘查之后才發(fā)現(xiàn)的特大型礦床。筆者在參加該礦區(qū)科研和生產(chǎn)項(xiàng)目過程中,對(duì)部分鉆孔進(jìn)行了詳細(xì)的科研編錄,進(jìn)行礦區(qū)的野外地質(zhì)調(diào)查和基礎(chǔ)填圖工作,對(duì)礦區(qū)的基本地質(zhì)特征有了較為詳細(xì)的了解,因此選擇該礦床進(jìn)行論文撰寫。文章主要探討以下內(nèi)容:(1)礦體基本特征,包括礦體形態(tài)、產(chǎn)狀和規(guī)模;(2)礦體的礦化特征,包括礦石組構(gòu)、礦物組合;(3)礦體與其他地質(zhì)體的關(guān)系,包括礦體與花崗閃長(zhǎng)斑巖和石英閃長(zhǎng)玢巖、礦體與安山巖、礦體與長(zhǎng)石石英砂巖等的關(guān)系;(4)該礦床與其他同類型礦床特征;(5)礦體指示成礦物質(zhì)來源方向。論文編寫過程中繪制中段平面圖探討礦體的垂向大致變化,宏觀和鏡下照片確定礦石組構(gòu)和礦物組合,銅元素等值線圖確定礦體、高品位礦體形態(tài)、產(chǎn)狀,銅元素等值線圖探討礦體與其他地質(zhì)體關(guān)系。文章對(duì)主要內(nèi)容的研究,得出如下結(jié)論:(1)礦體形態(tài)為略傾斜的近柱狀體,平面投影大致呈橢圓形,礦體傾向?yàn)槟蠔|方向150°左右,傾角約80°。(2)整個(gè)礦床的賦礦巖石主要為長(zhǎng)石石英砂巖和花崗質(zhì)巖體,巖體規(guī)模較小,地表蓋層安山巖不含礦且與下伏巖石界線清晰。其他地質(zhì)體與礦體的關(guān)系主要表現(xiàn)為石英閃長(zhǎng)玢巖和花崗閃長(zhǎng)斑巖大部分含礦,長(zhǎng)石石英砂巖為主要賦礦巖石,安山巖不含礦�；◢忛W長(zhǎng)斑巖和石英閃長(zhǎng)玢巖與成礦關(guān)系密切;長(zhǎng)石石英砂巖為成礦提供了空間;雖然安山巖不含礦,但是為礦體的保存提供了良好的蓋層。(3)通過該類型礦床對(duì)比,此類礦床礦種以銅、金為主,推測(cè)該礦床或附近仍有尋找金礦的潛力。(4)根據(jù)礦體的形態(tài)和高品位礦體特征,初步確定成礦物質(zhì)來自南東方向,礦體中心在鉆孔ZK2404附近,且厚度較大,靠近中心的多個(gè)鉆孔下部礦體品位較好,說明深部成礦潛力較大;南西方向鉆探工程未完全控制,仍有較好的找礦潛力。
[Abstract]:The Tiegelongnan copper (gold) deposit in Tibet is the first typical epithermal deposit discovered in Tibet. In the course of participating in the scientific research and production project of the mining area, the author has made detailed scientific research catalogs on some boreholes, carried out the field geological survey and basic mapping work of the mining area, and has a more detailed understanding of the basic geological characteristics of the mining area. Therefore, the deposit is selected for writing the paper. This paper mainly discusses the basic features of the orebody, including the shape, occurrence and scale of the orebody, including the ore fabric, the relationship between the orebody and other geological bodies. The relationship between orebody and granodiorite porphyry and quartz diorite porphyry, orebody and andesite, orebody and feldspar quartz sandstone. In the process of compiling the paper, the vertical variation of ore body is discussed by drawing the plan of middle section, the ore fabric and mineral assemblage are determined by macroscopic and microscopic photographs, the ore body is determined by contours of copper element, the shape and occurrence of high grade ore body is determined. The relationship between ore bodies and other geological bodies is discussed in the contour map of copper element. The main contents of the paper are as follows: (1) the orebody is a slightly inclined near columnar body, the plane projection is approximately elliptical, and the orebody tends to be about 150 擄from the south to the east. The ore-bearing rocks of the whole deposit are mainly feldspar quartz sandstone and granitic rock mass, the scale of the rock body is relatively small, and the surface caprock andesite contains no ore and has a clear boundary with the underlying rock. The relationship between other geological bodies and orebodies mainly shows that most of the quartz diorite porphyry and granodiorite porphyry are ore-bearing, feldspar quartz sandstone is the main ore-bearing rock, andesite is not ore-bearing. Granodiorite porphyry and quartz diorite porphyrite are closely related to mineralization; feldspar quartz sandstone provides space for mineralization; although andesite does not contain ore, it provides a good caprock for the preservation of orebody. The ore types of this kind of deposit are mainly copper and gold. It is speculated that the ore deposit or nearby still has the potential of gold prospecting. (4) according to the shape of ore body and the characteristics of high grade orebody, it is preliminarily determined that the ore-forming material comes from the direction of south to east, and the orebody center is near the borehole ZK2404. The thickness is large and the ore bodies in the lower part of several boreholes near the center have better grade, which indicates that the deep ore-forming potential is great, and the drilling project in the south-west direction is not completely controlled, so it still has good prospecting potential.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.41;P618.51

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