Original Co-deposits of Pule and Hengdong in northeast Hunan occurred in tectonic, hydrothermal, altered rock zone of the lower plate of main fracture belt F2, Changping fracture zone.

• 湘东北普乐及横洞原生钴矿床均赋存于长平断裂带F2主干断裂下盘构造热液蚀变岩带中。