Description
Maxfield Brother'S
Commodities
PrimarySilver, Lead
SecondaryCopper, Gold
TertiaryIron
Commodity typeM
Deposit
Deposit typeReplacement
Deposit sizeS
WorkingsUnderground
Orebody formTABULAR
Ore controlFavored Bedding, Fissure
Materials
Ore mineralsGalena, Gold, Malachite, Pyrite, Silver
GangueCalcite, Diopside, Garnet, Quartz, Sepiolite, Wollastonite
Geology
Host rockQuartzite,Limestone · Gardison Limestone;Tintic Quartzite
Associated rockDiorite · Diorite Dikes
StructureN. Flank, Big Cottonwood Uplift, Fissure (N To N20e, Steeply), Faulting
Tectonic settingShelf
AlterationLimestone Next To Dike Has Been Altered To Silicates Containing Epidote, Mica, Wollastonite, Diopside, Garnet. There Is No Ore In The Zone. Bleaching Of The Ls. Is Common
Economic & production
Development statusPast Producer
First production1880
Discovery year1871
Identification
Deposit ID10102099
MRDS IDDC14130
RegionNA
Data scoreB
Coordinates40.64244, -111.68496
References
JAMES, L.P. 1979, GEOLOGY, ORE DEPOSITS, AND HISTORY OF THE BIG COTTONWOOD MINING DISTRICT, SALT LAKE CO UTAH: UTAH GEOL. & MINERAL SURV. BULL. 114.CRITTENDEN, M.D. JR, 1965, GEOLOGY OF THE MOUNT AIRE QUADRANGLE, SALT LAKE CO., UTAH: U.S. GEOLOGICAL SURVEY MAP GQ-379CALKINS, F.C. AND B.S. BUTLER 1943, GEOLOGY AND ORE DEPOSITS OF THE COTTONWOOD-AMERICAN FORK AREA UTAH: U.S. GEOL. SURV. PROF. PAPER, 201BUTLER AND OTHERS, 1920. THE ORE DEPOSITS OF UTAH: U.S. GEOL SURVEY PROF. PAPER 111JAMES, L.P., 1979, P. 51-52; CALKINS AND BUTLER, 1943, P. 102-103