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for the Eagle Project
LJS\J:\scopes\04w018\10000\FVD reports\Final MPA\r-Mine Permit App appendix...Geology of the Eagle Nickel-Copper Deposit
LJS\J:\scopes\04w018\10000\FVD reports\Final MPA\r-Mine Permit App...Exploration
THE GEOLOGY
OF THE
EAGLE NICKEL-COPPER DEPOSIT
MICHIGAN, USA
Prepared for:
Kennecott Minerals.............................................. 11
Eagle Deposit Geology ..................................
3
Summary
The Eagle property is the subject of a Pre-Feasibility Study. Eagle is a high-grade
magmatic |  | | Journal (article/letter/editorial) | | 34S associated with the Eagle Ni-Cu sulfide deposit in
Upper Peninsula, Michigan: Implications on country...34S associated with the Eagle NiCu sulfide deposit in Upper Peninsula, Michigan: Implications on country...ļ¤34S associated with the Eagle NiCu sulfide deposit in Upper Peninsula, Michigan:
Implications on country...1Department of Geosciences, Western Michigan University,
Kalamazoo, MI USA
2Department of Environmental Quality...Quality, State of Michigan, USA
*Corresponding author email: joyashish.thakurta@wmich.edu
Telephone: |  | Benson, E.K., Ripley, E.M., Li, C., Underwood, B.W., Mahin, R. (2020) Multiple S Isotopes and S Isotope Heterogeneity at the East Eagle Ni-Cu-Platinum Group Element Deposit, Northern Michigan. Economic Geology, 115 (3). 527-541 doi:10.5382/econgeo.4707 | Journal (article/letter/editorial) | | Heterogeneity at the East Eagle
Ni-Cu-Platinum Group Element Deposit, Northern Michigan
E. K. Benson,1,ā ...Indiana 47405, USA
2Eagle Mine, Lundin Mining, 4547 County Road 601, Champion, Michigan 49814, USA
Abstract...Abstract
The East Eagle Ni-Cu-platinum group element deposit is a conduit-type deposit located in northern Michigan...Michigan,
in close spatial proximity to the currently producing Eagle deposit. Massive and semimassive...mineralization at East Eagle occurs approximately 800 m lower in the stratigraphic sequence than that
at Eagle and |  | Ding, Xin, Ripley, Edward M., Shirey, Steven B., Li, Chusi (2012) Os, Nd, O and S isotope constraints on country rock contamination in the conduit-related Eagle CuāNiā(PGE) deposit, Midcontinent Rift System, Upper Michigan. Geochimica et Cosmochimica Acta, 89. 10-30 doi:10.1016/j.gca.2012.04.029 | Journal (article/letter/editorial) | | conduit-related Eagle CuāNiā(PGE)
deposit, Midcontinent Rift System, Upper Michigan
Xin Ding a,ā, Edward...Sciences, Indiana University, 1001 East Tenth Street, Bloomington, IN 47405, USA
Carnegie Institution of Washington...5241 Broad Branch Road, NW, Washington, DC 20015, USA
Received 19 December 2011; accepted in revised form...2012; available online 27 April 2012
Abstract
The Eagle CuāNiā(PGE) deposit is hosted by maļ¬c to ultramaļ¬c...rocks associated with the MarquetteāBaraga
dike swarm in northern Michigan. Sulļ¬de mineralization formed |  | | Journal (article/letter/editorial) | | Rift-Related Echo Lake Intrusion in Northern
Michigan, USA
Alexander James Koerber and Joyashish Thakurta...Sciences, Western Michigan University, 1903 W Michigan Ave,
Kalamazoo, MI 49008, USA; alexander.j.koerber@wmich...Lake intrusion in the Upper Peninsula (UP) of Michigan, USA, was formed
during the 1.1 Ga Midcontinent Rift...in the intrusion, with interlayered bands of peridotite, mafic pegmatitic rock, olivine gabbro,
magnetite-bearing...1.08 ppm [11,12].
The Eagle intrusion, in the Upper Peninsula (UP) of Michigan and the Tamarack intrusion |  | | Journal (article/letter/editorial) | | geometrically distinct conduit-style deposits in
MA
the Eagle Intrusion and Tamarack Igneous Complex. These intrusions...range from -0.85 to 0.45
ā° whereas values from the Eagle Intrusion and the Tamarack Igneous Complex range...PT
Complex.
SC
RI
Keywords: Duluth Complex, Eagle Intrusion, Tamarack Igneous Complex, Cu isotopes...intrusions (chonoliths). The
AC
CE
P
Eagle Intrusion in Michigan (Fig.2) typifies this type of occurrence;...occurrence; ore production began at Eagle in 2014.
A third type of low-sulfide deposit is PGE-enriched layers |  | Taranovic, Valentina, Ripley, Edward M., Li, Chusi, Rossell, Dean (2015) Petrogenesis of the NiāCuāPGE sulfide-bearing Tamarack Intrusive Complex, Midcontinent Rift System, Minnesota. Lithos, 212. 16-31 doi:10.1016/j.lithos.2014.10.012 | Journal (article/letter/editorial) | | of Geological Sciences, Indiana University, 1001 East 10th Street, Bloomington, IN 47405, United States...Intrusion. Both intrusions comprise peridotite, feldspathic peridotite, feldspathic pyroxenite,
melatroctolite...smaller, conduit-related, Eagle and East Eagle Intrusions in Northern Michigan (Fo86 to Fo75). The FeO/MgO...MINNESOTA
IOWA
WISCONSIN
ILLINOIS
Eagle
intrusion 1107
0
MICHIGAN
INDIANA
MBD
BIC intrusion
MC
Wisconsin...
PD
La ek Michigan
Minnesota
LS intrusion
1109
ift
Crystal Lake
EGS
1107
Michigan
ie
Er
ke
La |  | Taranovic, V., Ripley, E. M., Li, C., Shirey, S. B. (2018) S, O, and Re-Os Isotope Studies of the Tamarack Igneous Complex: Melt-Rock Interaction During the Early Stage of Midcontinent Rift Development. Economic Geology, 113 (5) 1161-1179 doi:10.5382/econgeo.2018.4585 | Journal (article/letter/editorial) | | Pd, is similar in many aspects to
the Eagle deposit in Michigan. Sulfur, O, and Os isotopes have been... The values are very similar to those from the Eagle deposit,
but contrast sharply with values of disseminated...contamination indicated by the Re-Os and S systems in the Eagle intrusion and the Tamarack
Intrusive Complex may...sulfide mineralization found in the Eagle Intrusion
in Michigan. The Eagle Intrusion also formed from a picritic...The
geometric form of the mineralization at both Eagle and Tamarack is similar to that of other āconduitā-related |  | Taranovic, Valentina, Ripley, Edward M., Li, Chusi, Rossell, Dean (2016) Chalcophile element (Ni, Cu, PGE, and Au) variations in the Tamarack magmatic sulfide deposit in the Midcontinent Rift System: implications for dynamic ore-forming processes. Mineralium Deposita, 51 (7) 937-951 doi:10.1007/s00126-016-0643-2 | Journal (article/letter/editorial) | | intrusive units: an early funnel-shaped
layered peridotite body containing relatively fine-grained olivine...Intrusion) at the top, and a late
gabbro-troctolite-peridotite dike-like body containing relatively coarse-grained...Bloomington, IN 47405, USA
2
Rio Tinto Exploration (Kennecott Exploration), Duluth, MN 55810,
USA
platinum-group...TIC to those of the early rift, conduit-related Eagle deposit and
to those of the sheet-like intrusions...other Bconduit^-related deposits such as those at Eagle (Ding et
al. 2010), Jinchuan (Tonnelier 2010; Li |  | | Report (issue) | | northern Wisconsin, and northern
peninsula of Michigan ________________ :.. ________________________..._
13
5. Map of part of Perch Lake quadrangle, Michigan, showing glacial features_________________________________...Outcr'op of Mowry shale on Thornton dome, Weston County, Wyo.; B, Hand specimen of Mowry shale collected...from Crook County, Wyo.; B, Thin section of Mowry shale from Thornton dome,
Weston County, Wyo_ __ _...Corinth, Howard County, Ark.; B, Basal gravel of
\Yoodbine formation, near Horatio, Sevier County, Ark_ _ _ |  | | Journal (article/letter/editorial) | | Mineralization in the Partridge River, South Kawishiwi, and
Eagle Intrusions: A Review of Contrasting Styles of Sulfide-Rich... Ripleyā
Department of Geological Sciences, 100 East 10th St., Indiana University, Bloomington, Indiana...sulfides are all part of the Eagle deposit in northern Michigan.
The Eagle deposit is representative of...average Ni grade of the massive sulfide
at the Eagle deposit is 3.57 wt %, making it one of the highest...orebodies in the world. The parental
magma for the Eagle intrusion was a high-FeO picrite.
Isotopic and trace |  | | Journal (article/letter/editorial) | | ARTICLE
PGE geochemistry of the Eagle NiāCuā(PGE) deposit,
Upper Michigan: constraints on ore genesis in...6 May 2011
# Springer-Verlag 2011
Abstract The Eagle NiāCuā(PGE) deposit is hosted
in maficāultramafic...rocks associated with the
MarquetteāBaraga dike swarm in northern Michigan. Sulfide
mineralization formed...mineralization have been recognized
within the Eagle deposit: (1) disseminated sulfides in olivinerich...Sciences, Indiana University,
1001 East Tenth Street,
Bloomington, IN 47405, USA
e-mail: ripley@indiana.edu
|  | | Report (issue) | | volcanoes were present near
Murfreesboro, in Pike County. They found here not
,only the rocks that ~nce..., nud Brnckett, R. N., The I1eridotite of Pike County, Ark.:Am.
JOUI'. Sel., 311 sel'., vol. 38, pp...1891.
Ā» Glenn, L, C., Arkansns dinmond-bearing peridotite (abstract): Geol. Soc. AmerĀ
ica BulL, vol. 23..., and Ross, C. S., DiamondĀ
bCllring peridotite in Pike County, Ark.: U. S. Geol. Survey Bull. 735, pp...in. Texas they are
found in the Woodbine sand, Eagle Ford clay, Austin
chalk, Taylor marl, and Navarro |  | | Report (issue) | | maximum depths, target areas, and overall lengths
of mine workings for use in environmental assessment.
The...
Eighty percent of the deposits have subsurface mine workings lengths
between 1,100 and 5,900 m (fig...Oxidation of exposed sulfides will occur
in old mine workings. The three models are offered as potentially...surface (target) areas, maximum mine
working depths, and cumulative mine working lengths. Be forewarned...that
this is the first attempt at modeling mine depth and mine size in this fashion
and may undergo future |  | | Book | | Rift-Related Echo Lake Intrusion in Northern Michigan, USA
Reprinted from: Minerals 2019, 9, 21, doi:10...description of
PGM from China, Russia, South Africa, USA, and Zimbabwe are reported.
In his contribution,...gabbroic complexes, ophiolitic chromitites from Canada,
USA, Russia, and other localities worldwide. Typically...midcontinent rift Echo Lake intrusion in northern Michigan, USA. The authors found that the
investigated rocks...ite vein-disseminated ores
from the Komsomolsky mine of the Talnakh and Oktyabrsk deposits, Norilāsk |  | | Journal (article/letter/editorial) | | Indiana University, Bloomington, Indiana 47405, USA
a r t i c l e
i n f o
a b s t r a c t
Article...melt
DNi
Rift System in the Lake Superior region, USA (Berg and Klewin, 1988,
their sample DSC-3) as an...core (YD-0106) through a 150 m interval in
the Eagle intrusion of the Midcontinent Rift System. Detailed...information of the Eagle intrusion can be found in Ding et al. (2010).
The Eagle intrusion is coeval...dominant rock types in the
intrusion are feldspathic peridotite, melatroctolite and olivine gabbro.
The textures |  | Scoates, James S., Scoates, R.F. Jon, Wall, Corey J., Friedman, Richard M., Couƫslan, Chris G. (2017) DIRECT DATING OF ULTRAMAFIC SILLS AND MAFIC INTRUSIONS ASSOCIATED WITH Ni-SULFIDE MINERALIZATION IN THE THOMPSON NICKEL BELT, MANITOBA, CANADA. Economic Geology, 112 (3) 675-692 doi:10.2113/econgeo.112.3.675 | Journal (article/letter/editorial) | | Quebec orogen). At
the south pit of the Thompson mine, a U-Pb zircon age of 1860.7 Ā± 0.7 Ma for a composite...intrusion from the South pit of the Thompson mine (see mine
locations in Fig. 1). Combined with metamorphic...Group and Archean gneiss
Reworked Archean gneiss
Mine
Road
Rail line
5 km
6136000 mN
Fig. 1. Geology...et al., 1979; Burnham
et al., 2009). From west to east, the Superior boundary zone
in Manitoba consists...relationships. Many olivinerich rocks (i.e., dunite and peridotite) have been converted to
serpentinite, and the |  | | Report (issue) | | underground workings of Amalgamated
Mines Co., East Eagle district, Oreg
_
72
4. Topographic and geologic...geologic map of Virtue district, Baker County,
Oreg_______________________________ ___
72
5. Sketch map of...of mill-tunnel level of Virtue mine, Virtue district,
Oreg__________________________________
72
6. Composite...Composite plan and section of Flagstaff mine, Virtue district,
Oreg___________________________ __
'72
7...7. Map and section of Standard mine, Quartzburg district, Oreg
104
8. Geologic sketch map of Gold Hill |  | | Journal (article/letter/editorial) | | Island Complex (DIC) is located in Southeast
Alaska, USA, and is commonly considered part of the class
Editorial...Sciences, Indiana University, 1001 East
10th St., Bloomington, IN 47405, USA
e-mail: estifter@indiana.edu
...lithologic
zonation from a dunite core outward to peridotite, olivine
clinopyroxenite, clinopyroxenite, hornblende-bearing...Tonnelier 2010),
Voiseyās Bay (Brenan and Li 2000), and Eagle (Ding et al.
2010). Silicate minerals in net-textured...subhedral, rounded olivine from the Eagle
Deposit, Northern Michigan (a) and Voiseyās Bay Deposit (b). |  | Manor, Matthew J., Scoates, James S., Wall, Corey J., Nixon, Graham T., Friedman, Richard M., Amini, Marghalery, Ames, Doreen E. (2017) Age of the Late Cretaceous Ultramafic-Hosted Giant Mascot Ni-Cu-PGE Deposit, Southern Canadian Cordillera: Integrating CA-ID-TIMS and LA-ICP-MS U-Pb Geochronology and Trace Element Geochemistry of Zircon*. Economic Geology, 112 (6) 1395-1418 doi:10.5382/econgeo.2017.4514 | Journal (article/letter/editorial) | | crudely elliptical, 4-km2 plug composed of dunite, peridotite, pyroxenite, hornblende pyroxenite,
and hornblendite...intrusions are correlated
with the 96 Ma Big Jim peridotite and nearby 96 to 91 Ma Mt. Stuart batholith in...is British Columbiaās
only past-producing nickel mine (1958ā1974), having produced ~4.2 million tons (Mt)...Brown,
2016; Fig. 2A). The intrusion is located east of Harrison Lake,
132Ā°W
A
N
CC
YT
N
SM
ea...Giant Mascot
CC
Cascades
Mt. Stuart
NAb
Canada
USA
CPC
MT
CD
BR
Idaho
WR
Sierra
Nevada
Tuolumne |  | | Report (issue) | | Staff
Bulletin No.
No.
14-A Northeastern Oregon-East Half
14-B
Northeastern Oregon-West Half
No. 14-C...AND WALLOWA COUNTIES
13
General Statement
Baker County
13
____
13
_ _______________
Baker Area
Cable...Area
Cracker Creek District__
Eagle Creek A rea
Greenhorn Area (Baker County part)
Homestead Area
Lower...____
_
___ _
__
______________ _
___ _
Union County
___
___
_______
________
_
__
_ _ _ _ ________...mined for years
in the vicinity of Coos bay, Coos county, and
lignites and sub-bituminous coals are known |  | Maier, W. D., Rasmussen, B., Fletcher, I. R., Li, C., Barnes, S.-J., Huhma, H. (2013) The Kunene Anorthosite Complex, Namibia, and Its Satellite Intrusions: Geochemistry, Geochronology, and Economic Potential. Economic Geology, 108 (5) 953-986 doi:10.2113/econgeo.108.5.953 | Journal (article/letter/editorial) | | Indiana University, 1001 East 10th Street, Bloomington, Indiana 47405-1405, USA
4 Dept. Sciences de la...km2), mafic-ultramafic intrusions
comprising peridotite, pyroxenite, gabbro, troctolite, and anorthosite...troctolite, the Oncocua pyroxenite, and the Ombuku peridotite-gabbronorite. The latter additionally contains...e masses
in Angola (around Oncocua, Pocolo, and east of Cijada, Fig.
1a), and Namibia (Fig. 1b) several...a magnetic anomaly and an anorthositic body; OD
east of Epupa = Oronditi, gabbro; OJJ = Otjijanjasemo |  | | Journal (issue) | | including
natural gas was over $175 million.
Over 605 mine sites were active during 1988. The majority. about...Province in southeastern Oregon, including Malheur
County, where over 5,000 new claims were staked in 1988...mineral industry. Ash Grove Cement West (active mine site 6) continued to produce crushed agricultural...plant in Baker County. Ash Grove is the second-largest payer
of property tax in the county and currently...currently employs about 100 people.
Eagle-Picher Minerals, Inc., continued production of filter-grade
diatomite |  | | Journal (article/letter/editorial) | | to the main rift. Examples include the Eagle deposit in Michigan, the Tamarack mineralization in Minnesota...association with
both small intrusions (e.g., Eagle in Michigan, Tamarack in
Minnesota, and Current Lake in...Disraeli
ke
Hele
Seagull
Current Lake Complex
USA
Duluth
Complex
North Shore
Volcanic Group
ro
...CANADA
Mamainse Point
Volcanic Group
Lake Superior
Eagle
Intrusion
Sault Ste Marie
Great Lake
s Tectonic...Olser
Volcanic
group
Thunder Bay
48Ā°
La
Lake Michigan
Que
50Ā°
200 Km
94Ā°
92Ā°
90Ā°
Middle
Proterozoic |  | | Journal (issue) | | 97801
Mrs. W.R. Anderson. Vice-President (RMFMS)
402 East State Highway, Copperton
Bingham Canyon. UT 84006...78204
Mlcrocryā¢tal Collectlng In Keweenaw County, Michigan
by Jean R. Rentmeister .....................SHOW DATE COORDINATORS
AFMS - Mary Anderson , 402 East State HI -Way, Copperton, Bingham Canyon. UT 84006...CA. Host,
Gem and Mineral Society ol San Mateo County. H.B.
Murnan, P.O. Box 53, NAS Mollett Field, CA...Mineralogy Society. Annual Show.
Benton-Franklin County Fairgrounds. Kennewick, WA.
10-10 and 10-6. Donald |
|