最近,笔者在参加1∶20万《洛南幅》修编工作中,于洛南县西北的上庵沟、庵子沟西梁、白沟、白河脑、张家沟南山梁、郭家岭、白岭、东蒲子沟等十余处的原划陶湾群庙湾组中采到丰富的小壳化石,并发现多处胶磷矿矿化点。小壳化石产于白云岩之底部。化石层为一厚0.3—1m的含磷、锰白云岩。其最底部为暗灰色条带状胶磷矿。胶磷矿单层厚1cm 左右,富集地段一般厚0.1—0.3m,长1—30m,P_2 O_5 Recently, the author participated in the 1: 200000 “洛南 amplitude” revision work, in Luonan County, northwest of the Um Ditch, Um ditch Xiliang, Baigou, Baihe brain, Zhangjiagou Nanshanliang, Guojialing, white Ridge, Dongpuzi ditch and other more than ten of the original plan Tao Bay Group Miaowan rich in the collection of small shell fossils, and found a number of phosphate rock mineralization point. Small shell fossils produced in the dolomite bottom. Fossil layer is a 0.3-1m thick phosphorus, manganese dolomite. The bottom of the dark gray ribbon colloidal phosphate. Phosphate rock monolayer thickness of about 1cm, the general enrichment 0.1-0.3m thick, 1-30m long, P 2 O_5