埃伦铁矿位于加拿大安大略省南部米契皮科顿地区,苏必利尔湖北面,是世界上大型菱铁矿矿床之一。矿区由米契皮科顿群酸—基性火山碎屑杂岩、熔岩及沉积岩组成一个东西走向、向北倒转的背斜,岩层出露厚度达3000多米,并有晚期花岗岩与辉绿岩侵入,图1为矿区地质略图。矿床地质特征概述如下。矿层下盘为下火山杂岩系:由互层状流纹—英安凝灰岩、熔岩、火山角砾岩 The Ellen Iron Mine, located in the area of ​​Mitch Piccdon, in southern Ontario, Canada, north of Lake Superior, is one of the largest siderite deposits in the world. The mining area consists of a Ceticidcton acid-base volcaniclastic complex, lava and sedimentary rocks that consist of an east-west, upside-down anticline with over 3,000 meters of exposed thickness and intrusions of late granite and diabase Figure 1 is a sketch map of the mining area. The geological features of the deposit are summarized below. The lower part of the ore body is composed of the lower volcanic complex: it consists of interbedded riblets-English tuff, lava and volcanic breccia