TY  - RPRT
TI  - The Orphan Lode Mine, Grand Canyon, Arizona; a case history of a mineralized, collapse-breccia pipe
AU  - W.L. Chenoweth
PY  - 1986
DO  - 10.3133/ofr86510
UR  - https://pubs.usgs.gov/publication/ofr86510
ID  - ofr86510
ER  -