Commodities
PrimaryGold, Silver
SecondaryLead
Commodity typeM
Materials
Ore mineralsPyrite, Galena, Sphalerite
GangueRhodochrosite
Geology
Host rockBlack Shale,Porphyry · "Pierre Shale", "quartz monzonite porphyry"
Structureintrusion breccia
Alterationsericitized porpphyry
Economic & production
Development statusPast Producer
Identification
Deposit ID10021683
MRDS IDDE00892
Alternate namesElephant Tunnel and ore body, Mill Tunnel
RegionNA
Data scoreB
Coordinates39.48443, -105.96838
References
RANSOME, F.L., 1911, GEOLOGY AND ORE DEPOSITS OF THE BRECKENRIDGE DISTRICT, COLORADO: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 75, P. 150.WILSON, ANNA B., AND LAROCK, EDWARD J., 1991, ASCII DATABASE FOR PRINCIPAL LODE MINES AND MINERALIZED AREAS IN SOUTHERN SUMMIT COUNTY, COLORADO, U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 91-0027A AND B, 22 P. AND ONE DISKETTE.WILSON, ANNA B., AND LAROCK, EDWARD J., IN PRESS, MINERALIZED AREAS AND PRINCIPAL LODE MINES IN SOUTHERN SUMMIT COUNTY, COLORADO, U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-2163, SCALE 1:50,000.Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.Lovering, T. S., and Goddard, E. N., 1950, Geology and ore deposits of the Front Range, Colorado: U.S. Geological Survey Professional Paper 223, 319 p.