TY  - RPRT
TI  - Glauconite from the Precambrian belt series, Montana
AU  - R. A. Gulbrandsen
AU  - S. S. Goldich
AU  - H.H. Thomas
PY  - 1963
DO  - 10.1126/science.140.3565.390
UR  - https://pubs.usgs.gov/publication/70010685
ID  - 70010685
ER  -