@misc{indiciaedbcfb8d55778,
  title = {Mineral resource of the month: feldspar},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {2011},
  url = {https://pubs.usgs.gov/publication/70045904},
  note = {Source identifier: 70045904}
}