TY - RPRT TI - U.S. Geological Survey mineral databases; MRDS and MAS/MILS AU - E.J. McFaul AU - G.T. Mason AU - W.B. Ferguson AU - B. R. Lipin PY - 2000 DO - 10.3133/ds52 UR - https://pubs.usgs.gov/publication/ds52 ID - ds52 ER -