塔什库尔干陆块磁铁矿多源信息特征及成矿预测

Multi-source Information and Metallogenic Prognosis for Magnetite Deposits in the Taxkorgan Landmass

新疆塔什库尔干陆块近年来陆续发现了乔普卡里莫、老并、吉尔铁克沟等一系列大型-超大型磁铁矿床,在一直未有找矿突破的达布达尔以南至岔河口地段,又新发现了乌如克铁矿及新的磁铁矿点。该类矿床主要赋存于布伦阔勒岩群黑云石英片岩岩性段内,为一种特殊的膏铁建造,具有明显的区域高磁和化探异常。矿床成因类型为海相火山沉积型,后期受区域变质作用叠加改造。该成果对丰富世界沉积铁矿床的类型和指导同类型铁矿床的找矿工作都具有重要的参考意义。

A series of large and superlarge magnetite deposits such as Qiaopukalimo iron deposit, Laobing iron deposit and Jiertiekegou iron deposit as well as Wuruke iron deposit have been discovered in the Taxkorgan landmass, western Kunlun, Xinjiang. These deposits occur in biotite quartz schist of the Bulunkuole Rock Group as gypsum-iron formation characterized by obvious magnetic and geochemical anomalies. The deposits belong to marine volcanic-sedimentary origin superimposed by regional metamorphism.