吉林南部早元古宙老岭群中的板石沟式沉积变质型磷矿分布于浑江北岸太古宙克拉通边缘之外侧,东起板石沟,向西经珍珠门、林家沟等地,止于旱葱沟,呈北东——南西向带状展布,在此带上形成了几处小型磷矿床及矿点。虽然它们一般含磷品位不高,储量也较小,但在缺磷的东北地区,仍具有一定的工业意义。 In the Early Proterozoic Laoling Group in southern Jilin, the Banxigou sedimentary metamorphic phosphate rock is located outside the margin of the Archean Craton in the north bank of the Hunjiang River. From the east to the Banshigou, to the west via the Pearl Gate and Linjiagou, Hanging on the ditch onion ditch, north-east-southwest strip distribution, in this belt formed several small phosphate deposits and ore. Although they are generally low phosphorus grade, reserves are also small, but in the northeast of phosphorus deficiency, still has some industrial significance.