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Exploration in the duluth complex. there has been exploration for copper and nickel deposits in the bedrock unit called the duluth complex in st. louis and lake counties, since the discovery of copper and nickel mineralization there in 1948. platinum and palladium were discovered in the duluth complex in 1986.
The biwabik iron formation ispproximately 1.9 billion yearold sequence of ironrich sedimentary rocks that was metamorphosed at its easternmost extent by approximately 1.1 billion yearold intrusions of the duluth complex. the metamorphic recrystallization of ironformation locally produced ir.
1 university of minnesota duluth, department of geologyniveristy of minnesota duluth, center for applied research and technology development, natural resources research center. element contour maps2 glacial drift geochemistry for strategic minerals duluth complex, lake county, minnesota. 62 pages, 171 inches, 2.01 mb.
Comparisons with similar intrusive bodies worldwide have suggested potential within the duluth complex for mineral deposits containing chrome, cobalt and platinum group elements pges. the first platinum mineral identification was made in 1983 andarrow, ore grade concentration of pges was identified in archived drill core that was reexamined in 1985.
Of the edge of the duluth complex near babbitt, minnesota. this map shows the locations of the deposits, state metallic mineral 117, iron mining features 115, known metallic mineral deposits 0214, exploration drilling for kennecott exploration 1216, and active state metallic mineral leases 022817 from the dnrs division of.
Author publisher category geology isbn size 42.49 mb format pdf, epub, read view 3955 get book download and read online geology and mineral potential of the duluth complex and related rocks of northeastern minnesota. ebook release date 2002.full book title geology and mineral potential of the duluth complex and related rocks of.
Geology of the nickel lake macrodike and its association with cunipge mineralization in the northern south kawishiwi intrusion, duluth complex, northeastern minnesota by dean m. peterson1 and paul b. albers2niversity of minnesota duluth, natural resources research instituteuluth metals limited, ely,.
Reference 5th international platinum symposium bulletin of the geological society of finland number 61, part 1,1989,164 mcswiggen, p. l. 1999 platinumpalladium group minerals, gold, silver, and cobalt in the minnamax coppernickel sulfide deposit, duluth complex, northeastern minnesota. minnesota geological survey report of investigations 54.
Geology and mineralogy of northmet and the duluth complex. the northmet deposit is located in the partridge river intrusion of the duluth complex,assive geological formation near the eastern end of the mesabi iron range, which contains one of the worlds largest known undeveloped accumulations of copper, nickel and platinum group metals. we are the first in.
Miscellaneous maps of minnesota. geologic map of minneapolis st. paul, 10. gabbro lake quadrangle, lake county, 10. simple bouguer gravity map of minnesota hibbing sheet, 10. simple bouguer gravity map of southern part of duluth complex and adjacent, 10.
Deposits located within the basal zone of the duluth complex, deposits in the ironwood iron formation, and deposits associated with the nonesuch shale. we are continuing the study of characterizing baseline geochemistry of several watersheds in minnesota and michigan, and examining the potential for aquatic toxicity from metals.
Location map of coppernickel deposits in the duluth complex. introduction the duluth complex is located in northeastern minnesota and consists of 1.1 b.y. late precambrian keweenawan mafic and.
Mineral deposits of the duluth complex and related rocks and assess the potential for discovering similar deposits elsewhere in explorable areas of.
Abstract. abstract the wilder lake intrusion wli isell differentiated, northwarddipping, sheetlike mafic layered intrusion that is part of the 1.1 ga duluth complex exposed in northeastern minnesota. while several reconnaissance studies of the well exposed western quarter of the wli have shown it to have several distinctive petrologic.
Titanium oxide minerals occurring in the duluth complex of northeast minnesota could provide huge economic and employment benefits to the state and provide critical metals to the nation. the complicated geologic setting of the mineral deposits within the duluth complex and the complex glacial history of the region make minnesota.
Geology. dahlberg, e.h., 1989, lithochemistry of the platiniferous oxideultramafic association of the basal zone duluth complex, birch lakeduval area, in morey, g.b., ed., workshop on the applicability of gold and platinumgroupelement models in minnesota minnesota geological survey information circular 30, p. 4950. geology.
World class ores of the duluth complexrn contained coppern contained pgen contained nickel compared to other magmatic sulfide deposits, the duluth complex is only the bushveld, great dyke pge deposits and norilsk contain more pge from peterson, 2010.
Titanium northeastern minnesota has ilmeniterich deposits associated with the gabbroic intrusive duluth complex. titanium oxide produced from the minerals ilmenite, rutile, leucoxene, and synthetic rutile is the predominant white pigment used in paints, paper, and plastics inultibillion dollar market in the united states.
Taylor rb 1964 geology of the duluth gabbro complex near duluth, minnesota. minn geol surv bull 44 63 google scholar tyson rm, chang lly 1984 the petrology and sulfide mineralization of the partridge river troctolite, duluth complex, minnesota.
The duluth complex hosts four distinct types of magmatic mineral deposit, none of which is economic to mine at the present time. the deposit types includearge, lowgrade, disseminated nicu concentrations, some of which contain local zones enriched in platinumgroup elements pgesocalized highgrade zones of massive nicu sulfides.
Ri58 geology and mineral potential of the duluth complex and related rocks of northeastern minnesota.
Ri58 geology and mineral potential of the duluth published by nrc research press drenth et al. 293 complex and related rocks of northeastern minnesota. minnesota geological schulz, k.j., woodruff, l.g., and nicholson, s.w. 2014.
There are more thanillion tons of coppernickelpgm resources within many deposits along 40 miles of the edge of the duluth complex near babbitt, mn. this graphic shows the locations of the deposits, the state mineral leases held by six companies and notes where resource estimates ni 43101 compliant were completed.
Duluth complex, minnesota laurentian university society of economic geologists, second annual pge workshop, sudbury, ontario. peterson, d.m., 2002, coppernickel grade maps for the spruce road deposit, south kawishiwi intrusion, duluth complex natural resources research institute, university of minnesota, duluth, report.
And wahl, t.e., 2002, geology and mineral potential of the duluth complex and related rocks of northeastern minnesota minnesota geological survey report of investigations 58, 207 p.
Geology and mineral deposits of the duluth complex. the duluth complex hosts four distinct types of magmatic mineral deposit, none of which is economic to mine at the present time see fig. 6. the deposit types include large, lowgrade, disseminated nicu concentrations, some of which contain local zones enriched in platinumgroup elements.
Jirsand southwick003 mineral potential and geology of minnesota. minnesota geological survey, university of minnesota. retrievedirsa ma, boerboom tj, chandler vw, mossler jh, runkel ac, and setterholm dr 2011 s21 geologic map of minnesota bedrock geology. minnesota geological survey, state map series s21,.
Minnesotas vast mineral resources. the duluth complex in minnesota is one of the largest undeveloped mineral deposits in the world. the nearlyillion tons deposit of copper, nickel and precious metals have been here for millions of years, and weve known about them for more than 60. what is new, however, is the technology to extract and process them in an economically.
The dunka road deposit is one oferies of cuni occurrences located within troctolitic rocks of the southern portion of the duluth complex, minnesota. sulfide minerals, principally pyrrhotite, chalcopyrite, cubanite, and minor pentlandite occur interstitially with silicate minerals and average aboutolume percent in oregrade horizons.
Geologic map and sampling locations near mineral deposits associated with the duluth complex in northern minnesota. sourcesusage. resiliency of mineralized watersheds in northern minnesota and michigan institute on lake superior geology proceedings volume 62, partrogram and abstracts, may 48, 2016, duluth, mn, p. 117118.