CAJ | 학술논문

　　老并铁矿床位于新疆西昆仑-喀喇昆仑造山带西段，塔什库尔干陆块内的塔阿西-塔吐鲁沟铁铜钒成矿带中。矿体主要呈层状、似层状、透镜状赋存于古元古界布伦阔勒群中的黑云石英片岩和斜长角闪片岩内，并与顶底板围岩呈渐变过渡、互层产出、同步褶曲。老并铁矿稀土元素含量总体较低，具早前寒武纪海洋化学沉积特征，在PAAS标准化的稀土元素分布曲线显示LREE亏损、HREE富集，强Eu和La的正异常及不明显的Ce异常，表明老并铁矿床的形成与海底火山活动关系密切，其矿床特征与Algoma型铁矿相似；磁铁矿氧同位素δ18O值为3.3‰~4.6‰，显示研究区磁铁矿为原生沉积成因。结合成矿地质背景及矿床地质特征认为，老并铁矿床属海底火山沉积-变质成因。
　　로병철광상위우신강서곤륜-객나곤륜조산대서단，탑십고이간륙괴내적탑아서-탑토로구철동범성광대중。광체주요정층상、사층상、투경상부존우고원고계포륜활륵군중적흑운석영편암화사장각섬편암내，병여정저판위암정점변과도、호층산출、동보습곡。로병철광희토원소함량총체교저，구조전한무기해양화학침적특정，재PAAS표준화적희토원소분포곡선현시LREE우손、HREE부집，강Eu화La적정이상급불명현적Ce이상，표명로병철광상적형성여해저화산활동관계밀절，기광상특정여Algoma형철광상사；자철광양동위소δ18O치위3.3‰~4.6‰，현시연구구자철광위원생침적성인。결합성광지질배경급광상지질특정인위，로병철광상속해저화산침적-변질성인。
The Laobing iron deposit is located in the TaAXi to TaTuLuGou iron copper vanadium metallogenic belt of Tashikuergan in the west Kunlun to Kala Kunlun orogenic belt. The ore bodies occurred in plagioclase-hornblende schist and biotite-quartz schist of Palaeoproterozoic Bulunkuole group with lamellar and near-bedded or lenticular shapes, and showed Gradual transition, synchronous fold and interbedded output with roof and floor of surrounding rock. The REE contents of Laobing deposit are low,showing characteristics of early Precambrian ocean chemical deposition. In the PAAS-normalized REE pattern,LREE are depleted and HREE are enriched relatively, with strong Eu and La positive anomaly and no visible Ce anomaly, indicates that iron ore formation is closely related with submarine volcanic activity, and the deposit characteristics are similar with Algoma iron ore. Magnetite oxygen isotopes delta 18O value distribute in 3.3~4.6‰irange, shows mainly magnetites are original sedimentary magnetite magnetite. Combine the ore-forming geo-logical background and ore deposit geology characteristics, considers the genesis of Laobing iron deposit belongs to the submarine volcano sedimentary-metamorphism.