19186.陜西鎮(zhèn)安太白廟金礦地球化學(xué)特征及成因探討

1、論文題目：陜西鎮(zhèn)安太白廟金礦地球化學(xué)特征及成因探討專業(yè)：礦產(chǎn)普查與勘探碩士生：王希(簽名)：指導(dǎo)教師：巨天乙(簽名)：端木合順(簽名)：摘要本文選擇了鎮(zhèn)安縣太白廟金礦作為研究對(duì)象，在整理和吸收前人研究成果的基礎(chǔ)上，經(jīng)過(guò)野外地質(zhì)調(diào)查，收集了有關(guān)地質(zhì)信息，采集了相關(guān)的巖石和礦物樣品，并應(yīng)用礦物學(xué)、巖石學(xué)、構(gòu)造學(xué)、地球化學(xué)以及礦床學(xué)等的理論和方法進(jìn)行研究。本文在分析太白廟金礦區(qū)域地質(zhì)、礦區(qū)地質(zhì)、礦體地質(zhì)的基礎(chǔ)上，從賦礦地層，控礦構(gòu)造以及氫氧硫

2、同位素、微量元素、稀土元素、包裹體測(cè)溫、測(cè)壓、流體成分分析數(shù)據(jù)等地球化學(xué)特征方面，對(duì)太白廟金礦成礦地質(zhì)條件及礦床成因進(jìn)行了分析和判斷。經(jīng)過(guò)分析，發(fā)現(xiàn)太白廟金礦形成于中低溫、低壓、低鹽度流體成礦物理化學(xué)環(huán)境中；金礦礦體以似層狀、脈狀、透鏡狀產(chǎn)出，主要賦礦地層為星紅鋪組和九里坪組變質(zhì)泥鈣質(zhì)粉砂巖，受地層和構(gòu)造雙因素控制，以NWW向次級(jí)斷裂帶的控制為主要構(gòu)造控制。大型剪切斷裂帶旁側(cè)的次級(jí)斷裂起著傳遞含礦熱液的作用，成為配礦、容礦構(gòu)造；與金礦化

3、有關(guān)的蝕變主要有硅化、黃鐵礦化、碳酸鹽化、絹云母化等低溫?zé)嵋何g變。金以顯微—次顯微的形式存在為主，粒度＞0.2mm的明金較為常見，肉眼觀察粒徑多在1mm左右，鏡下粒徑約0.05mm。成礦元素地球化學(xué)以AuPbZnCuAsSbBi組合為主。從太白廟金礦特征分析可知，太白廟金礦床與類卡林型金礦床床特征幾乎完全一致，因此，該金礦應(yīng)屬類卡林型金礦礦床。關(guān)鍵詞：卡林型金礦；類卡林型金礦；成礦地質(zhì)條件；礦床成因；太白廟金礦論文類型：理論研究Subj

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