大乃林沟角闪岩位于内蒙赤峰地区黄岗梁西北同兴乡附近,地处大兴安岭造山带的南端,是1997年野外调研中发现的一类特殊的富碱超基性岩类。由于其可能作为大兴安岭南段中生代地幔热柱(热流体)活动的直接证据和具有较好的砷、钴、铂族元素矿化,因而具有较高的理论和实际研究价值。 大乃林沟晶洞角闪岩呈筒状—岩脉状侵入在晚侏罗世中酸性火山机构中,其直接围岩为火山颈相 Located in the vicinity of Tongxing Township in the northwestern part of Huanggangliang, Chifeng, Inner Mongolia, the Greater Bailinougou is located at the southern tip of the Greater Hinggan Mountains orogenic belt. It is a special class of alkali-rich ultrabasic rocks discovered in the field investigation in 1997. It has high theoretical and practical value because it may be directly evidenced by the activity of the Mesozoic mantle plume (hot fluid) in the southern segment of the Great Xing’an Mountains and has better mineralization of arsenic, cobalt and platinum group elements. In the Late Jurassic intermediate volcanic structures, the granitic amphibolite from the Gobijing Cave in the Gurbanton is in the shape of a tube-vein. The direct surrounding rock is volcanic neck