本文關(guān)鍵詞： 東源鎢鉬礦床 地質(zhì)特征 地球化學(xué)異常 地質(zhì)-地球化學(xué)找礦模型　出處：《中國(guó)地質(zhì)大學(xué)(北京)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：東源鎢鉬礦床位于安徽省南部祁門縣,由安徽省332地質(zhì)隊(duì)于2009年探明儲(chǔ)量。本文旨在總結(jié)安徽東源鎢鉬礦床的地質(zhì)特征,結(jié)合元素的地球化學(xué)異常特征建立地質(zhì)-地球化學(xué)找礦模型,為鎢礦成礦地質(zhì)背景和成礦規(guī)律的深入研究提供了新的思路與方向,進(jìn)而提高找礦效率。通過(guò)對(duì)研究區(qū)域地質(zhì)及巖石、蝕變巖、水系沉積物地球化學(xué)數(shù)據(jù)的分析,總結(jié)東源鎢鉬礦床地質(zhì)和元素地球化學(xué)特征,本文建立了東源鎢鉬礦床的地質(zhì)-地球化學(xué)找礦模型。主要取得了以下認(rèn)識(shí):東源鎢鉬礦床為一大型礦床,位于祁門縣境內(nèi),礦體呈出露狀態(tài)。賦礦地層為元古界牛屋組砂巖和千枚巖。成礦與東源花崗閃長(zhǎng)巖體關(guān)系密切,東源花崗閃長(zhǎng)巖體成巖年齡約146Ma。鎢礦體受斷裂控制明顯,具有細(xì)脈浸染狀和浸染狀鎢礦石兩種礦石類型,成礦年齡約146Ma。礦體形態(tài)呈層狀、似層狀,局部呈透鏡狀。圍巖蝕變主要為角巖化、鉀化、絹云母化、綠泥石化為主。東源鎢鉬礦床區(qū)域化探找礦指示元素組合為W、Mo、Mn、Bi、Ag、As、Co、Cr、Ni、Ti、Zr共11項(xiàng)元素,每項(xiàng)元素異常內(nèi)、中、外帶分帶清晰,異常范圍與礦區(qū)位置套和度較高。其中W、Bi具有3級(jí)異常而成為該區(qū)的主成礦元素,As、Ag具有2級(jí)異常,其他元素具有1級(jí)異常而成為東源鎢鉬礦床的重要伴生有益組分。巖石化探找礦指示元素組合為W、Sn、Mo、Bi、Cu、Zn、As、Co、Li、Sb、V、Sc共計(jì)12種元素,其富集系數(shù)均在1.4以上。
[Abstract]:Dongyuan tungsten-molybdenum deposit is located in Qimen County, southern Anhui Province. The reserves were proved by 332 Geological team of Anhui Province in 2009. The purpose of this paper is to summarize the geological characteristics of Dongyuan Tungsten Molybdenum Deposit in Anhui Province. Combined with the geochemical anomaly characteristics of elements, a geological geochemical prospecting model is established, which provides a new idea and direction for the further study of the metallogenic geological background and metallogenic regularity of tungsten deposits. The geological and elemental geochemical characteristics of Dongyuan Tungsten and Molybdenum deposit are summarized by analyzing the geochemical data of the studied regional geology, rocks, altered rocks and water system sediments. The geological geochemical prospecting model of Dongyuan tungsten and molybdenum deposit is established in this paper. The main results are as follows: Dongyuan tungsten and molybdenum deposit is a large deposit located in Qimen County. The orebody is exposed. The ore-bearing strata are sandstone and phyllite of Niuwu formation in the Proterozoic. The ore-forming is closely related to the Dongyuan granodiorite, and the diagenetic age of Dongyuan granodiorite is about 146Ma.The tungsten ore body is obviously controlled by faults. There are two types of ore, the ore-forming age of which is about 146 Ma.The ore body is layered, bedded and partially lenticular. The main alteration of surrounding rock is hornstone, potassium, sericite, etc. The regional geochemical prospecting indicator element assemblage of Dongyuan Tungsten Molybdenum Deposit is composed of 11 elements, including 11 elements, and each element anomaly has a clear zonation in the middle and outer zones, and the main elements are as follows: (1) the regional geochemical prospecting indicator elements of the Dongyuan Tungsten Molybdenum Deposit are composed of 11 elements, and each element anomaly has a clear zonation in the middle and outer zones. The range of anomaly is higher than that of the location of mining area, in which WNBI has 3 order anomaly and becomes the main ore-forming element in this area. The other elements have a grade 1 anomaly and become an important associated beneficial component of the Dongyuan Tungsten Molybdenum Deposit. The indicator elements for petrogeochemical prospecting are composed of 12 elements, including 12 elements, the enrichment coefficient of which is above 1.4.
【學(xué)位授予單位】：中國(guó)地質(zhì)大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.6

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本文編號(hào)：1505412