@misc{indiciaec6a6521754f2,
  title = {Composition and origin of Early Cambrian Tiantaishan phosphorite-Mn carbonate ores, Shaanxi Province, China},
  author = {J.R. Hein and D. Fan and J. Ye and T. Liu and H.-W. Yeh},
  year = {1999},
  doi = {10.1016/s0169-1368(99)00017-7},
  url = {https://pubs.usgs.gov/publication/70021408},
  note = {Source identifier: 70021408}
}