Description
Hanna Mining Co.
Commodities
PrimaryNickel, Copper
SecondaryCobalt, Silver, Gold, Platinum, Palladium
Commodity typeM
Deposit
Model9: Duluth Cu-Ni-PGE
Deposit sizeN
Orebody formDISSEMINATED, DISCONTINUOUS VEINLETS
Ore controlSulfide Distribution Controlled By Texture (Pegmatitic Zones) And Structure (Amount Of Fine-Grained Fractures). Overall Distribution Controlled By A Northwest-Trending Fracture Zone. Faults And Folds Were Responsible For Localizing Sulfide Mineralization As Well As For Providing Conduits For Later Syn- To Post-Magmatic Hydrothermal Fluids.
Materials
Ore mineralsBornite, Chalcocite, Chalcopyrite, Covellite, Cubanite, Digenite, Galena, Millerite, Niccolite, Pentlandite, Pyrrhotite, Sperrylite, Sphalerite
GangueBiotite, Chlorite, Iddingsite, Ilmenite, Magnetite, Sericite, Serpentine, Stilpnomelane
Geology
Host rockTroctolite · South Kawishiwi Intrusion
Associated rockGranite · Giants Range Batholith
AlterationSerpentine/Mica Assemblage, Later Argillic Alteration, Localized Hematitic Alteration, Greenschist Facies Assemblage
Economic & production
Development statusProspect
Discovery year1967
Identification
Deposit ID10048466
MRDS IDMP00053
Alternate namesFilson Creek
RegionNA
Data scoreB
Coordinates47.82167, -91.67378
References
KUHNS AND OTHERS, 1990; MORTON AND HAUCK, 1989; HAUCK AND BARNES, 1989KUHNS, M.J.P., HAUCK, S.A., AND BARNES, R.J., 1990, ORIGIN AND OCCURRENCE OF PLATINUM GROUP ELEMENTS, GOLD AND SILVER IN THE SOUTH FILSON CREEK COPPER-NICKEL MINERAL DEPOSIT, LAKE COUNTY, MINNESOTA: NATURAL RESOURCES RESEARCH INSTITUTE TECHNICAL REPORT NRRI/GMIN-TR-89-15, 60 P.MORTON, PENELOPE, AND HAUCK, S.A., 1989, PRECIOUS METALS IN THE COPPER-NICKEL DEPOSITS OF THE DULUTH COMPLEX, IN MOREY, G.B., ED., WORKSHOP ON THE APPLICABILITY OF GOLD AND PLATINUM-GROUP-ELEMENT MODELS IN MINNESOTA: MINNESOTA GEOLOGICAL SURVEY INFORMATION CIRCULAR 30, P. 47-48.HAUCK, S.A., AND BARNES, R.J., 1989, PRECIOUS METALS (PT-PD-AU-AG) IN THREE COPPER-NICKEL DEPOSITS IN THE DULUTH COMPLEX: NATURAL RESOURCES RESEARCH INSTITUTE, CENTER FOR APPLIED RESEARCH AND TECHNOLOGY DEVELOPMENT, TECHNICAL SUMMARY REPORT NRRI/GMIN-TSR-89-1, 19 P.