Mine detail: Maturi Nokomis Deposit

Previously called 'South Kawishiwi River WestDuvalMaturi DeepInco South LeaseInco Test Shaft Site'

Location:	Lake County, Minnesota, United States, North America
Lat / long:	47.80138, -91.75572
dep_id:	10096418
mrds_id:	W018671
Commodity type:	metallic
Major mineral:	Copper, Nickel, Palladium, Platinum
Minor mineral:	Cobalt, Titanium, Gold
Operation type:	Unknown
Production size:	No production occurred
Development status:	Prospect
ore:	Bornite, Chalcocite, Chalcopyrite, Covellite, Cubanite, Cuprite, Digenite, Pentlandite, Pyrite, Pyrrhotite, Sphalerite, Tenorite
gangue:	Olivine, Plagioclase, Pyroxene
orebody_fm:	DISSEMINATED, VEINLETS, SULFIDE-SILICATE INTERGROWTHS
work_type:	Surface
model:	9: Duluth Cu-Ni-PGE
conc_proc:	Magmatic Segregation
ore_ctrl:	Sulfides Segretated In Basal Troctolites Sub-Parallel To Lower Contacts
Reporter:	Woodruff, L.G., no name, Peterson, J.A., Sutphin, D.M. (Cannon, W.F.), Mason, Jr., G.T., Woodruff, Laurel G., Schruben, Paul, Nicholson, Suzanne
hrock_unit:	South Kawishiwi Intrusion
hrock_type:	Troctolite
arock_unit:	Giants Range Batholith
arock_type:	Granite
Structure:	Faulting Related To Rift Origin Of Duluth Complex. Several Ne-Trending Normal Faults Parallel The Midcontinent Rift System Near The Margin. These Faults Formed During The Opening Of The Rift And Controlled Emplacement Of The Troctolitic And Late Intrusions.
discr:	International Nickel Co.
References:	Commodity:: BONNICHSEN, BILL, 1974, COPPER AND NICKEL RESOURCES IN THE DULUTH COMPLEX: MINNESOTA GEOLOGICAL SURVEY INFORMATION CIRCULAR 10, 24 P. Deposit:: GROSH, W.A., PENNINGTON, J.W., WASSON, P.A., AND COOKE, S.R.B., 1955, INVESTIGATION OF COPPER-NICKEL MINERALIZATION IN KAWISHIWI RIVER AREA, LAKE COUNTY, MINN.: U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 5177, 18 P. Deposit:: PAGE, N. J, 1986, DESCRIPTIVE MODEL OF DULUTH CU-NI-PGE, IN COX, D.P. AND SINGER, D.A., MINERAL DEPOSIT MODELS: U.S. GEOLOGICAL SURVEY BULLETIN 1693, P. 16. Development:: SCHLUTER, R.B., AND LANDSTROM, A.B., 1976, CONTINUOUS PILOT PLANT TESTING CONFIRMS FLOATABILITY OF DULUTH COMPLEX SULPHIDES: ENGINEERING AND MINING JOURNAL, V. 177, NO. 4, P. 80-83. Geology:: SCHWARTZ, G.M., AND DAVIDSON, D.M., 1952, GEOLOGIC SETTING OF THE COPPER-NICKEL PROSPECT IN THE DULUTH GABBRO NEAR ELY, MINNESOTA: MINING ENGINEERING, V. 4, NO. 7, P. 699-702. Geology:: 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. Geology:: WEIBLEN, P.W., 1989, THE IMPORTANCE OF EVALUATING THE POTENTIAL OF THE DULUTH COMPLEX AS A PLATINUM GROUP ELEMENT RESOURCE, 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. 51-55. Geology:: MORTON, PENELOPE, AND HAUCK, S.A., 1987, PGE, AU AND AG CONTENTS OF CU-NI SULFIDES FOUND AT THE BASE OF THE DULUTH COMPLEX, NORTHEASTERN MINNESOTA: NATURAL RESOURCES RESEARCH INSTITUTE TECHNICAL REPORT NRRI/GMIN-TR-87-04, 81 P. Geology:: LISTERUD, W.H., AND MEINEKE, D.G., 1977, MINERAL RESOURCES OF A PORTION OF THE DULUTH COMPLEX AND ADJACENT ROCKS IN ST. LOUIS AND LAKE COUNTIES, NORTHEASTERN MINNESOTA: MINNESOTA DEPARTMENT OF NATURAL RESOURCES, DIVISION OF MINERALS, MINERALS EXPLORATION SECTION, REPORT 93, 74 P. Geology:: FOOSE, M.P., 1985, THE SETTING AND DISTRIBUTION OF COPPER-NICKEL SULFIDES IN THE SOUTH KAWISHIWI INTRUSION, DULUTH COMPLEX, MINNESOTA, IN KRAFT, KATHLEEN, ED., U.S. GEOLOGICAL SURVEY RESEARCH ON MINERAL RESOURCES--1985, PROGRAM AND ABSTRACTS: U.S. GEOLOGICAL SURVEY CIRCULAR 949, P. 12-13. Geology:: HAUCK, S.A., SEVERSON, M.J., ZANKO, L., BARNES, S-J., MORTON, P., ALMINAS, H., FOORD, E.E., AND DAHLBERG, E.H., 1997, AN OVERVIEW OF THE GEOLOGY AND OXIDE, SULFIDE AND PLATINUM-GROUP ELEMENT MINERALIZATION ALONG THE WESTERN AND NORTHERN CONTACTS OF THE DULUTH COMPLEX: GEOLOGICAL SOCIETY OF AMERICA SPECIAL PAPER, V. 312, PP. 137-185. Reserve-Resource:: http://www.pdac.ca/pdac/conv/2009/pdf/core-shack/cs-nokomis.pdf Reserve-Resource:: http://www.duluthmetals.com/i/pdf/DM-PDAC-February-2009.pdf