BCS

Sediment-hosted gold deposit in Utah, U.S.A.

Geologic information

CountryU.S.A.
State or provinceUtah
Geographic location:40°35'11"N, 112°8'27"W
(-112.140833, 40.586389)
(click for info)
SubtypeCarlin
Deposit size
Length0.3km
Width0.15km
Area0.04sq km
Deposit features
Beds or lenses
Fault zone
Deposit age geologicMesozoic (?); Oligocene–Eocene (?)
Deposit clusterBingham porphyry system
Geochemical indicatorsAu, Te, As, Tl, Ba, Sb, Hg
Ore bearing unitPermian Park City Group and Kirkman-Diamond Creek Fm.
Ore bearing unit thickness100 m
Tectonic settingNorth-American craton, platform at rifted western margin
Minerals
Gold-bearing minerals:
Ore minerals:
Gangue minerals:
Alteration
Associated depositsCu-Au-Mo porphyry (Bingham); Cu-Au skarn (Carr Fork); Pb-Zn-Ag replacement and vein; sediment-hosted Au
Geologic map unit-112.140833333333, 40.5863888888889
Nearby scientific dataFind additional scientific data near this location

Economic information

Statusinactive
Owner or operatorRio Tinto PLC
Discovery date1988
Startup date1990
Gold particle size≤2
Operation types
Open pit
Crushing and milling
Heap leach
Production tonnage2.3tonnes
Production years1990–1996
Total tonnage2.3tonnes
Contained gold3.3 tonnes
Recovery Au85%
Source of tonnage, gradeKrahulek (2010)

Silver grade

SilverUnitsCriteria
0g/tAll ore in deposit

Gold grade

GoldReservesResourcesUnitsCriteria
1.44g/tProduced ore (grams per tonne)
1.44g/tAll ore in deposit

Gold cut-off grades

ReservesResourcesUnitsCriteria

Reserves and Resources

Mining methodEstimate typeTonnageCriteria

Reference information

Comments

Mined out. Heap leaching of gold in minor amounts continues in 2009. Au:Ag=50:1 (Krahulek, 2010). Waste:ore=3.1:1 (Briggs, 2006). Low-angle thrust structures cut by reactivated high-angle normal faults bounding a local ore-bearing graben. Two different age determinations of gold mineralization: (1) 159–147 Ma, K-Ar, illite (Presnell and Parry, 1996); (2) 33.1±1.6 Ma, U/Th-He, apatite (Arehart and others, 2003). 85% gold recovery indicates average gold extraction.

References

Babcock, R.S., Jr., Ballantyne, G.H., and Phillips, C.H., 1997, Summary of the geology of the Bingham district, Utah, in John, D.A., and Ballantyne, G.H., eds, Geology and ore deposits of the Oquirrh and Wasatch mountains, Utah: Society of Economic Geologists Guidebook Series, v. 29, p. 113–132.
Briggs, D.F., 2006, Mining operations report, version 2005: Unpublished.
Cunninham, C.G., Austin, G.W., Naeser, C.W., Rye, R.O., Ballantyne, G.H., Stamm, R.G., and Barker, C.E., 2004, Formation of paleothermal anomaly and disseminated gold deposits associated with the Bingham Canyon porphyry Cu-Au-Mo system, Utah: Economic Geology, v. 99, p. 789–806.
Gibson, T.R., 2009, Discovery of the Barneys Canyon and Melco gold deposits, Salt Lake County, Utah: Utah Geological Association Publication 38, p. 133–142.
Gunter, W.L., and Austin, G.W., 1996, The geology of gold deposits in the Barneys Canyon project area, Salt Lake City, Utah, in Green, S.M., and Struhsacker, E., eds., Geology and ore deposits of the American Cordillera: Reno, Geological Society of Nevada, Field Trip Guidebook Compendium, p. 43–58.
Krahulek, K., 2010, Sedimentary rock-hosted gold and silver deposits of the northeastern Basin and Range, Utah, in Steiniger, R., and Pennel, B., eds., Great Basin evolution and metallogeny: DEStech Publications, Inc., Geological Society of Nevada, Symposium 2010 Proceedings, p. 31–62.
Laes, D.Y.M., Krahulec, K.A., and Ballantyne, G.H., 1997, Geologic map of the Oquirrh Mountains, in John, D.A., and Ballantyne, G.H., eds, Geology and ore deposits of the Oquirrh and Wasatch mountains, Utah: Society of Economic Geologists Guidebook Series, v. 29, 1 sheet, scale 1:62,500.
Presnell, R.D., and Parry, W.T., 1996, Geology and geochemistry of the Barneys Canyon gold deposit, Utah: Economic Geology, v. 91, p. 273–288.