TY  - RPRT
TI  - Fe-Ca-phosphate, Fe-silicate, and Mn-oxide minerals in concretions from the Monterey Formation
AU  - M.D. Medrano
AU  - D.Z. Piper
PY  - 1997
DO  - 10.1016/s0009-2541(96)00170-2
UR  - https://pubs.usgs.gov/publication/70019860
ID  - 70019860
ER  -