TY  - RPRT
TI  - Optical (diffuse reflectance) and Mossbauer spectroscopic study of nontronite and related Fe-bearing smectites
AU  - David M. Sherman
AU  - N. Vergo
PY  - 1988
UR  - https://pubs.usgs.gov/publication/70014161
ID  - 70014161
ER  -