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现代矿业 ›› 2024, Vol. 40 ›› Issue (04): 46-.
在二道河铁矿矿权内实施了钻探、坑探、取样、水工环地质调查等地质工作，对矿床进
行了系统的揭露和控制。通过对各项勘察结果的综合分析，认为二道河铁矿床含矿地层为大红山群
红山组地层，含矿围岩为变钠质熔岩，矿体产状和地层产状具有明显的相似性。矿体呈现上缓下陡
的特征，厚度变化属复杂型，矿体内部结构复杂程度属中等型。该矿床属海底火山沉积-变质改造型
矿床，即由海底火山喷流作用形成，且受后期变质改造富集作用而形成矿床。认为辉绿岩侵入体对
二道河铁矿成矿的贡献是双向的，既对成矿有利，又对形成的铁矿床有一定的破矿作用，但成矿效应
大于破矿效应。
Drilling，pit exploration，sampling，hydraulic ring geological survey and other geological
work were carried out in the mining right of Erdaohe iron mine，and the deposit was systematically exposed
and controlled.Based on the comprehensive analysis of the survey results，it is considered that the ore-bear⁃
ing strata of the Erdaohe iron deposit are the Hongshan Formation of the Dahongshan Group，and the ore⁃
bearing surrounding rock is the metamorphic sodium lava. The occurrence of the ore body and the formation
are obviously similar.The ore body is characterized by slow up and steep down，the thickness change is com⁃
plex，and the complexity of the internal structure of the ore body is medium.The deposit belongs to the sub⁃
marine volcanic sedimentary-metamorphic transformation type deposit，which is formed by the submarine
volcanic eruption and formed by the later metamorphic transformation and enrichment.It is considered that
the contribution of diabase intrusion to the mineralization of Erdaohe iron deposit is two-way，which is not
only beneficial to mineralization，but also has a certain ore-breaking effect on the formed iron deposit，but
the metallogenic effect is greater than the ore-breaking effect.
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