Commodities
PrimaryGold
Commodity typeM
Deposit
Deposit sizeS
Ore controlSims And Day (1992) Note That The Fundamental Regional Control On Gold Deposits In The Superior Province Is Transcurrent And Oblique Slip-Shear Deformation Zones That Formed In Late Archean Time.
Materials
Ore mineralsGold
GangueActinolite, Chlorite, Epidote, Garnet, Pyrite
Geology
Host rockGreenstone
Tectonic settingSuperior Province, Relatively Undisturbed Archean Craton, The Southern Half Of Which Consists Of Dominantly Alternating Belts Of Volcanic-Plutonic (Greenstone-Granite) Terranes And Metasedimentary Rock Terranes.
AlterationHost Greenstone Was Probably Metamorphosed To Chlorite, Carbonate, Leucoxene And Other Alteration Products Prior To Contact Mineralization By The Trachite Porphyry.
Economic & production
Development statusUnknown
Identification
Deposit ID10082811
MRDS IDW062162
RegionNA
Data scoreB
Coordinates47.93666, -94.54222
References
GROUT, F.F., 1937, PETROGRAPHIC STUDY OF GOLD PROSPECTS OF MINNESOTA: ECONOMIC GEOLOGY, V. 32, NO. 1., P. 56-68.SIMS, P.K., AND DAY, W.C., 1992, A REGIONAL STRUCTURAL MODEL FOR GOLD MINERALIZATION IN THE SOUTHERN PART OF THE ARCHEAN SUPERIOR PROVINCE, UNITED STATES, IN SIMS, P.K., AND CARTER, L.M.H., EDS., CONTRIBUTIONS TO PRECAMBRIAN GEOLOGY OF THE LAKE SUPERIOR REGION: U.S. GEOLOGICAL SURVEY BULLETIN 1094-M, 19 P.