中国北方磷矿成矿特征及找矿潜力

中国北方磷矿在华北、东北以岩浆岩型磷矿和海相沉积型磷矿为主 ,在西北则以海相沉积型磷矿为主。海相沉积型磷块岩矿床主要形成于早寒武世 ,受南面和西面海水侵入影响最大、侵入距离最近的已知含磷地区可作为磷块岩矿床重点研究靶区 ;岩浆岩型磷灰石矿床所赋存的岩体类型比较多 ,但矿床规模较大 ,品位较高 ,具有较大的找矿潜力的磷灰石矿床产于超基性碱性碳酸岩杂岩体中 ,这类杂岩体在我国北方有一定的分布 ,对其做详细工作 ,可望找到规模大、品位高的磷灰石矿床

THE METALLOGENIC FEATURE OF PHOSPHATE DEPOSIT AND THEIR PROSPECTS POSIBILITY IN NORTH CHINA

The main type of phosphate deposits of North China are magmatic and marine sedimentary in Huabei and North East,and in North West mainly are marine sedimentary.The marine sedimentary P deposit mainly formed in Early Cambrian Period,the known P bearing areas ,where were effected most by the sea water intrusion from South and West,where the intrusive distance were the shortest can be studied as the important phosphorite deposits areas;Althrough the rock body types bearing magmatic apatite are more but the apatite deposits with larger scale,higher grade and more prospect possibility mainly occur in ultrabasic alkaline carbonatite complex bodies,there are some of these complex bodies occurring in North China,studying on them maybe find apatite deposit with large scale and high grade.