本文關鍵詞： 閃鋅礦 微量元素 LA-ICP-MS 黃崗梁鐵錫礦床　出處：《巖石礦物學雜志》2017年03期 　論文類型：期刊論文

【摘要】：黃崗梁鐵錫礦床位于大興安嶺中南段晚古生代增生造山帶。礦區(qū)內閃鋅礦產于矽卡巖中,可分為浸染狀和層紋狀閃鋅礦。本文對兩種閃鋅礦進行了高精度LA-ICP-MS元素含量測試,結果表明礦區(qū)兩種閃鋅礦具有相同成因特征,閃鋅礦中Mn、Cu、As、In較富集,Ga、Ge、Cd含量較低,而As、Sn、Bi、Pb含量變化較大。Cu、Sn、Bi、Pb等元素在閃鋅礦中以獨立礦物賦存,Mn、Fe、Ga、Ge、Cd、In、Sb以類質同像形式賦存在閃鋅礦晶格中。In/Ga、In/Ge比值較低,Zn/Cd比值為233~250,指示閃鋅礦形成于中高溫環(huán)境。Cd/Fe、Cd/Mn比值分別小于0.1和0.5,指示閃鋅礦成因與巖漿活動有關,In Ge特征圖解也指示其矽卡巖成因。通過與國內外典型礦床閃鋅礦微量元素特征對比,結合礦床地質特征認為黃崗梁鐵錫礦床中閃鋅礦屬于與燕山期巖漿作用有關的中高溫矽卡型閃鋅礦。
[Abstract]:The Huanggangliang iron tin deposit is located in the late Paleozoic accretionary orogenic belt in the central and southern part of Daxinganling. The sphalerite occurs in skarn and can be divided into disseminated and laminated sphalerite. In this paper, the content of LA-ICP-MS elements in two kinds of sphalerite has been measured with high precision. The results show that the two kinds of sphalerite have the same genetic characteristics, and the content of mn, Cu, Asn and CD in sphalerite is relatively low. However, the content of aspergite in the sphalerite varies greatly. The content of the elements, such as Cu, SnC, Bi, Pb and so on, are deposited in sphalerite as independent minerals in the form of homograph. The ratio of. In- / GaGe / Ge is lower than that of ZnR. 250, indicating that the sphalerite is formed in a medium high temperature environment. CdFe- / mn / mn ratio is smaller, respectively, in the sphalerite lattice in the form of isomorphism. The results show that the Zn / CD / CD / CD / CD / CD ratio is lower than that in the sphalerite crystal lattice. At 0. 1 and 0. 5, the characteristic diagrams indicating that the sphalerite genesis is related to magmatic activity, and the skarn genesis of the sphalerite are also indicated. The trace element characteristics of sphalerite are compared with those of typical ore deposits at home and abroad. According to the geological characteristics of the deposit, the sphalerite in the Huanggangliang iron and tin deposit belongs to the middle and high temperature skarn sphalerite related to the Yanshanian magmatism.
【作者單位】： 中南大學有色金屬成礦預測與地質環(huán)境監(jiān)測教育部重點實驗室;中南大學地球科學與信息物理學院;有色金屬礦產地質調查中心;內蒙古黃崗礦業(yè)有限責任公司;
【基金】：中南大學中央高�；究蒲袠I(yè)務費專項資金資助(2016zzts442)~~
【分類號】：P618.31;P618.4

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