@misc{indiciae67dd06cc2708,
  title = {Ages of minerals from metamorphic and igneous rocks near Iron Mountain, Michigan},
  author = {Lyman Thomas Aldrich and G.L. Davis and H. L. James},
  year = {1965},
  doi = {10.1093/petrology/6.3.445},
  url = {https://pubs.usgs.gov/publication/70221186},
  note = {Source identifier: 70221186}
}