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Montreal Mine (Ottawa; 33 Company Mine; Trimble; Odanah; Moore; Jupiter; Bourne; Sec. 33 Mine), Montreal, Gogebic Range, Iron Co., Wisconsin, USAi
Regional Level Types
Montreal Mine (Ottawa; 33 Company Mine; Trimble; Odanah; Moore; Jupiter; Bourne; Sec. 33 Mine)Mine
Montreal- not defined -
Gogebic RangeDeposit
Iron Co.County
WisconsinState
USACountry

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Key
Latitude & Longitude (WGS84):
46° 25' 40'' North , 90° 14' 45'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Montreal783 (2017)0.0km
Pence131 (2017)2.4km
Hurley1,493 (2017)5.2km
Ironwood5,002 (2017)6.5km
Iron Belt173 (2017)6.7km


An iron mine located near Montreal, just west of Hurley (Sec 33 T46N R2E). Test pits were first dug in the deposit and the first shaft sunk in 1882. The mine was predominantly an open pit operation until 1886. At the height of mining, it employed over 400 workers. As the mine grew, it engulfed a number of adjacent operations. The last ore was shipped in 1963. Workings featured the #4, #5 & #6 shafts; 20th., 37th., 38th. & 42nd. levels. The workings extended to a depth of 4,518 feet. It is in a classic Proterozoic banded iron formation (the Ironwood Formation) that forms the Gogebic Iron Range. The iron formation strikes NE-SW and dips north. It is cross-cut by diabasic dikes, which have localized a number of oxidized zone in the iron formation with large open pockets filled with a variety of minerals.

Excerpt from a AIME Report published 1/1/1940:
"The Montreal mine, operated by the Montreal Mining Co., is four miles west of Ironwood, Mich., in Iron County, Wisconsin. It is the westernmost producing property on the Gogebic Iron Range of the Lake Superior district. Its production is 4000 tons of hematite per day from an average depth of 2300 ft. This tonnage is hoisted through a five-compartment vertical shaft. Several mining methods are in use but in the larger orebodies the method is sublevel caving. … The main orebodies of the Montreal mine lie in eastward-pitching troughs formed by the intersections of intrusive dikes with impervious members of the iron formation. The formation has an average width of 425 ft., strikes east and west and dips north at approximately 62. The dikes dip south at 45° and bear north 20' from the strike of the formation, making the intersections with various members pitch east at 16°. The dikes are not continuous across the formation but are interrupted by a longitudinal bedding fault, which has a throw of 380 ft. vertically and 885 ft. horizontally. North of the fault zone the formation is called "hanging," south it is called "footwall" formation. The faulting has created two ore-bearing horizons; viz., at the intersection of hanging dikes with the slate members and the foot dikes with the quartzite footwall. In each formation the main ore-bearing member consists of wavy beds of hard chert interlaid with hematite. In the most productive part of the mine, where the sublevel caving method is employed, a hanging-formation dike lies in juxtaposition with a footwall dike and the iron formation carries ore in certain sections from the quartzite footwall to the hanging dike. Here a horizontal section of the orebody may be 300 to 400 ft. wide for a length of 150 ft. or more and tail out lengthwise in both the foot and hanging formations. The footwall ore section is much longer than the hanging wall because of the orebody's greater height above the "pitching dike."

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


30 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Analcime
Formula: Na(AlSi2O6) · H2O
Reference: Robinson, G. & G. LaBerge (2013) Minerals of the Lake Superior Iron Ranges: A. E. Seaman Mineral Museum: Michigan Technological University, 52 p.
Baryte
Formula: BaSO4
Reference: La Berge, G. (1984) The Geologic History of Wisconsin: Rocks and Minerals 59 (2), 60-73
Braunite
Formula: Mn2+Mn3+6(SiO4)O8
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Calcite
Formula: CaCO3
Reference: La Berge, G. (1984) The Geologic History of Wisconsin: Rocks and Minerals 59 (2), 60-73.
Calcite var: Manganoan Calcite
Formula: (Ca,Mn)CO3
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Celestine
Formula: SrSO4
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Cryptomelane
Formula: K(Mn4+7Mn3+)O16
Reference: Robinson, G. & G. LaBerge (2013) Minerals of the Lake Superior Iron Ranges: A. E. Seaman Mineral Museum: Michigan Technological University, 52 p.
Dickite
Formula: Al2(Si2O5)(OH)4
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Dolomite
Formula: CaMg(CO3)2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Galena
Formula: PbS
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Goethite
Formula: α-Fe3+O(OH)
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Gypsum
Formula: CaSO4 · 2H2O
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Gypsum var: Selenite
Formula: CaSO4 · 2H2O
Reference: Gems and Minerals of America - Jay Ellis Ransom-1974
Hematite
Formula: Fe2O3
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Hollandite
Formula: Ba(Mn4+6Mn3+2)O16
Reference: Robinson, G. & G. LaBerge (2013) Minerals of the Lake Superior Iron Ranges: A. E. Seaman Mineral Museum: Michigan Technological University, 52 p.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Kutnohorite
Formula: CaMn2+(CO3)2
Reference: Robinson, G. & G. LaBerge (2013) Minerals of the Lake Superior Iron Ranges: A. E. Seaman Mineral Museum: Michigan Technological University, 52 p.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Manganite
Formula: Mn3+O(OH)
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399; Bernard J.H. and Hyrsl J. (2004) Minerals and their Localities.
Marcasite
Formula: FeS2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Minnesotaite
Formula: Fe2+3Si4O10(OH)2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Neotocite
Formula: (Mn,Fe,Mg)SiO3 · H2O
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399; Bernard J.H. and Hyrsl J. (2004) Minerals and their Localities.
Pyrite
Formula: FeS2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Pyrolusite
Formula: Mn4+O2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Quartz
Formula: SiO2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Rhodochrosite
Formula: MnCO3
Reference: La Berge, G. (1984) The Geologic History of Wisconsin: Rocks and Minerals 59 (2), 60-73.
Romanèchite
Formula: (Ba,H2O)2(Mn4+,Mn3+)5O10
Reference: La Berge, G. (1984) The Geologic History of Wisconsin: Rocks and Minerals 59 (2), 60-73.
Siderite
Formula: FeCO3
Reference: La Berge, G. (1984) The Geologic History of Wisconsin: Rocks and Minerals 59 (2), 60-73.
Stilpnomelane
Formula: (K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Reference: La Berge, G. (1984) The Geologic History of Wisconsin: Rocks and Minerals 59 (2), 60-73.
Talc
Formula: Mg3Si4O10(OH)2
Reference: La Berge, G. (1984) The Geologic History of Wisconsin: Rocks and Minerals 59 (2), 60-73.
Vanadinite ?
Formula: Pb5(VO4)3Cl
Reference: Gems and Minerals of America - Jay Ellis Ransom-1974

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Marcasite2.EB.10aFeS2
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Cryptomelane4.DK.05aK(Mn4+7Mn3+)O16
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Hollandite4.DK.05aBa(Mn4+6Mn3+2)O16
Magnetite4.BB.05Fe2+Fe3+2O4
Manganite4.FD.15Mn3+O(OH)
Pyrolusite4.DB.05Mn4+O2
Quartz4.DA.05SiO2
Romanèchite4.DK.10(Ba,H2O)2(Mn4+,Mn3+)5O10
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
var: Manganoan Calcite5.AB.05(Ca,Mn)CO3
Dolomite5.AB.10CaMg(CO3)2
Kutnohorite5.AB.10CaMn2+(CO3)2
Rhodochrosite5.AB.05MnCO3
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Celestine7.AD.35SrSO4
Gypsum7.CD.40CaSO4 · 2H2O
var: Selenite7.CD.40CaSO4 · 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
Vanadinite ?8.BN.05Pb5(VO4)3Cl
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Analcime9.GB.05Na(AlSi2O6) · H2O
Braunite9.AG.05Mn2+Mn3+6(SiO4)O8
Dickite9.ED.05Al2(Si2O5)(OH)4
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Minnesotaite9.EC.05Fe2+3Si4O10(OH)2
Neotocite9.ED.20(Mn,Fe,Mg)SiO3 · H2O
Stilpnomelane9.EG.40(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Talc9.EC.05Mg3Si4O10(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
AmBnXp, with (m+n):p = 1:2
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Pyrolusite4.4.1.4Mn4+O2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Manganite6.1.3.1Mn3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
(AB)2X3
Braunite7.5.1.3Mn2+Mn3+6(SiO4)O8
AB8X16
Cryptomelane7.9.1.2K(Mn4+7Mn3+)O16
Hollandite7.9.1.1Ba(Mn4+6Mn3+2)O16
Romanèchite7.9.2.1(Ba,H2O)2(Mn4+,Mn3+)5O10
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Rhodochrosite14.1.1.4MnCO3
Siderite14.1.1.3FeCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Kutnohorite14.2.1.3CaMn2+(CO3)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Celestine28.3.1.2SrSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Vanadinite ?41.8.4.3Pb5(VO4)3Cl
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Dickite71.1.1.1Al2(Si2O5)(OH)4
Neotocite71.1.5.4(Mn,Fe,Mg)SiO3 · H2O
Sheets of 6-membered rings with 2:1 layers
Minnesotaite71.2.1.5Fe2+3Si4O10(OH)2
Talc71.2.1.3Mg3Si4O10(OH)2
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined islands
Stilpnomelane74.1.1.1(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Analcime77.1.1.1Na(AlSi2O6) · H2O
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Calcite
var: Manganoan Calcite
-(Ca,Mn)CO3
Gypsum
var: Selenite
-CaSO4 · 2H2O
Kaolinite-Al2(Si2O5)(OH)4

List of minerals for each chemical element

HHydrogen
H Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
H Goethiteα-Fe3+O(OH)
H ManganiteMn3+O(OH)
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H DickiteAl2(Si2O5)(OH)4
H GypsumCaSO4 · 2H2O
H KaoliniteAl2(Si2O5)(OH)4
H MinnesotaiteFe32+Si4O10(OH)2
H Neotocite(Mn,Fe,Mg)SiO3 · H2O
H Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
H TalcMg3Si4O10(OH)2
H Gypsum (var: Selenite)CaSO4 · 2H2O
H AnalcimeNa(AlSi2O6) · H2O
CCarbon
C CalciteCaCO3
C RhodochrositeMnCO3
C Calcite (var: Manganoan Calcite)(Ca,Mn)CO3
C DolomiteCaMg(CO3)2
C SideriteFeCO3
C KutnohoriteCaMn2+(CO3)2
OOxygen
O BaryteBaSO4
O HematiteFe2O3
O CalciteCaCO3
O Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
O Goethiteα-Fe3+O(OH)
O ManganiteMn3+O(OH)
O RhodochrositeMnCO3
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O BrauniteMn2+Mn63+(SiO4)O8
O Calcite (var: Manganoan Calcite)(Ca,Mn)CO3
O CelestineSrSO4
O DickiteAl2(Si2O5)(OH)4
O DolomiteCaMg(CO3)2
O GypsumCaSO4 · 2H2O
O KaoliniteAl2(Si2O5)(OH)4
O MagnetiteFe2+Fe23+O4
O MinnesotaiteFe32+Si4O10(OH)2
O Neotocite(Mn,Fe,Mg)SiO3 · H2O
O PyrolusiteMn4+O2
O QuartzSiO2
O SideriteFeCO3
O Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
O TalcMg3Si4O10(OH)2
O Gypsum (var: Selenite)CaSO4 · 2H2O
O AnalcimeNa(AlSi2O6) · H2O
O CryptomelaneK(Mn74+Mn3+)O16
O HollanditeBa(Mn64+Mn23+)O16
O KutnohoriteCaMn2+(CO3)2
O VanadinitePb5(VO4)3Cl
NaSodium
Na Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Na AnalcimeNa(AlSi2O6) · H2O
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg DolomiteCaMg(CO3)2
Mg Neotocite(Mn,Fe,Mg)SiO3 · H2O
Mg Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Mg TalcMg3Si4O10(OH)2
AlAluminium
Al DickiteAl2(Si2O5)(OH)4
Al KaoliniteAl2(Si2O5)(OH)4
Al Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Al AnalcimeNa(AlSi2O6) · H2O
SiSilicon
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si BrauniteMn2+Mn63+(SiO4)O8
Si DickiteAl2(Si2O5)(OH)4
Si KaoliniteAl2(Si2O5)(OH)4
Si MinnesotaiteFe32+Si4O10(OH)2
Si Neotocite(Mn,Fe,Mg)SiO3 · H2O
Si QuartzSiO2
Si Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Si TalcMg3Si4O10(OH)2
Si AnalcimeNa(AlSi2O6) · H2O
SSulfur
S BaryteBaSO4
S CelestineSrSO4
S GalenaPbS
S GypsumCaSO4 · 2H2O
S MarcasiteFeS2
S PyriteFeS2
S Gypsum (var: Selenite)CaSO4 · 2H2O
ClChlorine
Cl VanadinitePb5(VO4)3Cl
KPotassium
K Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
K CryptomelaneK(Mn74+Mn3+)O16
CaCalcium
Ca CalciteCaCO3
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca Calcite (var: Manganoan Calcite)(Ca,Mn)CO3
Ca DolomiteCaMg(CO3)2
Ca GypsumCaSO4 · 2H2O
Ca Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Ca Gypsum (var: Selenite)CaSO4 · 2H2O
Ca KutnohoriteCaMn2+(CO3)2
VVanadium
V VanadinitePb5(VO4)3Cl
MnManganese
Mn Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
Mn ManganiteMn3+O(OH)
Mn RhodochrositeMnCO3
Mn BrauniteMn2+Mn63+(SiO4)O8
Mn Calcite (var: Manganoan Calcite)(Ca,Mn)CO3
Mn Neotocite(Mn,Fe,Mg)SiO3 · H2O
Mn PyrolusiteMn4+O2
Mn CryptomelaneK(Mn74+Mn3+)O16
Mn HollanditeBa(Mn64+Mn23+)O16
Mn KutnohoriteCaMn2+(CO3)2
FeIron
Fe HematiteFe2O3
Fe Goethiteα-Fe3+O(OH)
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe MagnetiteFe2+Fe23+O4
Fe MarcasiteFeS2
Fe MinnesotaiteFe32+Si4O10(OH)2
Fe Neotocite(Mn,Fe,Mg)SiO3 · H2O
Fe PyriteFeS2
Fe SideriteFeCO3
Fe Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
SrStrontium
Sr CelestineSrSO4
BaBarium
Ba BaryteBaSO4
Ba Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10
Ba HollanditeBa(Mn64+Mn23+)O16
PbLead
Pb GalenaPbS
Pb VanadinitePb5(VO4)3Cl

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Dickey, R. M. (1938): Manganese in the Montreal Mine, Montreal, Wisconsin: Economic Geology, 33: 600-624.
Lake Superior Iron Ore Association (1952), Lake Superior iron ores: mining directory and statistics: 56-57.
La Berge, G. (1984) The Geologic History of Wisconsin: Rocks and Minerals 59 (2), 60-73.
Schmidt, R G. (1980): The Marquette Range Supergroup in the Gogebic iron district, Michigan and Wisconsin: U. S. Geological Survey Bulletin 1460, 96 p.
Cox, B. (2005) Mines of the Pewabic Country of Michigan and Wisconsin: vol. 3 Wisconsin Iron: Agogebic Press: 88-91.
Robinson, G. & G. LaBerge (2013) Minerals of the Lake Superior Iron Ranges: A. E. Seaman Mineral Museum: Michigan Technological University, 52 p.

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