@misc{indiciae6ae0da21d36b,
  title = {Mineralogy and geochemistry of Co-rich ferromanganese crusts and substrate rocks from Karin Ridge and Johnston Island, Farnella Cruise F7-86-HW},
  author = {J.R. Hein and Herbert Kirschenbaum and W. C. Schwab and Akira Taggart Usui and K.L. Olson and L. G. Pickthorn and M. S. Schulz and C.L. Morgan},
  year = {1990},
  doi = {10.3133/ofr90298},
  url = {https://pubs.usgs.gov/publication/ofr90298},
  note = {Source identifier: ofr90298}
}