TY  - RPRT
TI  - Semi-quantitative ion microprobe mass analyses of mineral-rich particles from the upper freeport coal
AU  - R. B. Finkelman
AU  - D.S. Simons
AU  - F.T. Dulong
AU  - E.B. Steel
PY  - 1984
DO  - 10.1016/0166-5162(84)90021-1
UR  - https://pubs.usgs.gov/publication/70013196
ID  - 70013196
ER  -