沉积变质矿床

鞍山小岭子铁矿系沉积变质矿床，铁矿物嵌布粒度细，磁性率低，属较难选铁矿。

Anshan Xiaolingzi iron ore belongs to the sedimentary metamorphic iron deposits with characteristics of fine iron minerals and low magnetic rate , and it is a refractory iron ore.

铁矿成因类型较多，主要类型单一，全球以沉积变质型矿床为主；

Iron ores have a diversified genesis but sole in major category , displaying as sedimentary-metamorphic deposits globally and as sedimentary-metamorphic deposits and magmatic deposits in China .

由于锰本身地球化学性质的限制，在自然界只受氧化物和碳酸盐类等几种类型控制，具经济意义的锰矿床是沉积（变质）矿床和表生（残余）矿床。

The manganese only has some oxide and carbonate type in nature by control with it 's geochemistry characteristic .

文章以区域成矿条件，矿床地质特征为基础，根据对矿石微量元素组分分析、硫同位素特征研究认为，矿床成因应属海相火山喷发-沉积受变质改造矿床。

Studies on regional ore-forming condition , characteristics of the ore deposit , micro-element of ore and S isotopes show that the deposit is a metamorphosed marine volcanic eruption-sedimentary Fe deposit .

矿床成因类型包括热水喷流沉积型矿床、与岩体有关的中低温热液脉型矿床、矽卡岩型矿床，块状硫化物型矿床、沉积变质型矿床等。

Genesis types include sedimentary exhalative deposits , medium-low temperature hydrothermal vein-type deposits and skarn-type deposits which are related to intrusions , massive sulfide deposit , sedimentary-metamorphic deposits , and so on .