TY  - RPRT
TI  - Biotite as a source of some of the sulfur in porphyry copper deposits
AU  - Norman G. Banks
PY  - 1973
DO  - 10.2113/gsecongeo.68.5.697
UR  - https://pubs.usgs.gov/publication/70241233
ID  - 70241233
ER  -