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Denison Mine, Bouck Township, Elliot Lake area, Algoma District, Ontario, Canadai
Regional Level Types
Denison MineMine
Bouck TownshipTownship
Elliot Lake areaArea
Algoma DistrictDistrict
OntarioProvince
CanadaCountry

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Key
Latitude & Longitude (WGS84):
46° 29' 59'' North , 82° 35' 40'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Elliot Lake12,508 (2008)13.3km
Spanish639 (2012)38.2km


History
1956: The No. 1 shaft (1857 feet deep and six compartments) was completed. The trackless mining method was initiated.
1957: The second shaft (eight compartments to 2750 feet) was completed. Crushing and acid leach plants began production. The mill was rated at 6000 tons per day. Mining by the room and pillar method was used.
1960: On March 24, 1960 Consolidated Denison Mines Limited and Can-Met Explorations Limited amalgamated.
1970: A 6200 foot connecting drive was completed between the two mines. 1973: Denison Mines Limited amalgamated with Stanrock Uranium Mines Limited. The mill rate was up to 7000 tons per day, producing 12,000 to 13,000 pounds of U3OB and 400 pounds of yttrium.
1978: Production was 2,404,000 tons of ore with an average millhead grade of 2.15 pounds per ton; 4,989,000 pounds of U308 were recovered. Dewatering, expansion, and technological upgrading took place at the Stanrock and Can-Met Mines. The capacity of the central processing plant increased to 15,000 tons per day. Mining capacity increased to 21,000 tons per day.
1980: Underground expansion was completed including the dewatering of the Stanrock Mine. The mill is to be completed in 1981. Production was 2,510,000 tons of ore with an average millhead grade of 1.87 pounds per ton; 4,451,823 pounds of U308 were recovered.
1986: Denison built a plant to extract yttrium oxide, a rare earth, as a by-product from the uranium production. This plant was operated until 1990.
1992: Mine closed

History of the mining company:

1. Denison Nickel Mines, Limited was incorporated by letters patent on November 30th 1936 and supplementary letters patent have been issued to Denison on May 27, 1946
2. On May 18, 1949 Denison Nickel Mines, Limited changed its name to North Denison Mines Limited
2. On February 17, 1954 North Denison Mines Limited changed its name to Consolidated Denison Mines Limited
3. On March 24, 1960 amalgamation of Consolidated Denison Mines Limited and Can-Met Explorations Limited. New company name: Denison Mines Limited
4. On February 12, 1973 amalgamation with Stanrock Uranium Mines Limited
5. On May 24, 2002 by Articles of Amendment the company changed its name to: Denison Energy Inc.
6. On September 23, 2003 by Articles of Incorporation Denison Mines Inc. was created
7. On March 8, 2004 Reorganization of Denison Energy Inc. – Mining and Environmental services businesses were transferred to Denison Mines Inc.
8. On December 1, 2006 Arrangement between International Uranium Corporation, IUC Subco and Denison Mines Inc.. Name of Amalgamated Company: Denison Mines Corp.


Geology
The deposit is hosted within north west trending paleochannels of uraniferous pyritic quartz pebble conglomerates located in a basal memberof the Matinenda formation.
The main orebody (Denison Reef) occurs from 0 to 180 feet above the Early Precambrian basement and 210 to 230 feet below an argillite layer. It is a tabular-shaped mass covering a projected surface area of 8000 feet by 14,000 feet. The ore zone averages 16.7 feet thick and strikes S65E with an average dip of 19 S. The ore zone is composed of two layers known as the A and B Zones. They average 8 feet in thickness. The average depth of the ore zone is 1000 feet at the north end and 3000 feet at the south end. The C Zone above the A and B averages 6 by 100 feet in size. The D and E Zones are conglomerate beds 50 and 70 feet below the argillite. The ore-bearing conglomerate is a uranium-bearing oliogomicitic quartz-pebble conglomerate. Economic Features: From 1961 to 1980, production from the Denison Mine was 34,376,100 tons of ore, from which 41,297 tons U30B were recovered for an average grade of 0.12 percent U308.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


20 valid minerals.

Detailed Mineral List:

'Allanite Group' ?
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Anatase
Formula: TiO2
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Baryte
Formula: BaSO4
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Brannerite
Formula: UTi2O6
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Cassiterite
Formula: SnO2
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Chromite
Formula: Fe2+Cr3+2O4
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Diopside
Formula: CaMgSi2O6
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Fluorite
Formula: CaF2
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Fluorite var: Yttrofluorite
Formula: (Ca1-xYx)F2+x where 0.05< x <0.3
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Gold
Formula: Au
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Hematite
Formula: Fe2O3
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Ilmenite
Formula: Fe2+TiO3
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
'Monazite'
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Quartz
Formula: SiO2
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Rutile
Formula: TiO2
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Scheelite
Formula: Ca(WO4)
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Spinel
Formula: MgAl2O4
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Titanite
Formula: CaTi(SiO4)O
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Uraninite
Formula: UO2
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Xenotime-(Y)
Formula: Y(PO4)
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Zircon
Formula: Zr(SiO4)
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)
Zircon var: Cyrtolite
Formula: Zr[(SiO4),(OH)4]
Reference: Robertson, J.A. (1976) The Blind River Uranium Deposits: the ores and their setting. (Ontario Division of Mines, Miscellaneous paper 65)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 3 - Halides
Fluorite3.AB.25CaF2
var: Yttrofluorite3.AB.25(Ca1-xYx)F2+x where 0.05< x <0.3
Group 4 - Oxides and Hydroxides
Anatase4.DD.05TiO2
Brannerite4.DH.05UTi2O6
Cassiterite4.DB.05SnO2
Chromite4.BB.05Fe2+Cr3+2O4
Hematite4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Spinel4.BB.05MgAl2O4
Uraninite4.DL.05UO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Scheelite7.GA.05Ca(WO4)
Group 8 - Phosphates, Arsenates and Vanadates
Xenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
Diopside9.DA.15CaMgSi2O6
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Titanite9.AG.15CaTi(SiO4)O
Zircon9.AD.30Zr(SiO4)
var: Cyrtolite9.AD.30Zr[(SiO4),(OH)4]
Unclassified Minerals, Rocks, etc.
'Allanite Group' ?-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Garnet Group'-X3Z2(SiO4)3
'Monazite'-
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Anatase4.4.4.1TiO2
Cassiterite4.4.1.5SnO2
Rutile4.4.1.1TiO2
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Spinel7.2.1.1MgAl2O4
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
AB2O6
Brannerite8.3.4.1UTi2O6
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Allanite Group' ?-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Apatite'-Ca5(PO4)3(Cl/F/OH)
Fluorite
var: Yttrofluorite
-(Ca1-xYx)F2+x where 0.05< x <0.3
'Garnet Group'-X3Z2(SiO4)3
'Monazite'-
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z
Xenotime-(Y)-Y(PO4)
Zircon
var: Cyrtolite
-Zr[(SiO4),(OH)4]

List of minerals for each chemical element

HHydrogen
H Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H ApatiteCa5(PO4)3(Cl/F/OH)
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
H Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
BBoron
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
OOxygen
O QuartzSiO2
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O AnataseTiO2
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O BaryteBaSO4
O ApatiteCa5(PO4)3(Cl/F/OH)
O CassiteriteSnO2
O ChromiteFe2+Cr23+O4
O DiopsideCaMgSi2O6
O Garnet GroupX3Z2(SiO4)3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O HematiteFe2O3
O IlmeniteFe2+TiO3
O MagnetiteFe2+Fe23+O4
O RutileTiO2
O ScheeliteCa(WO4)
O TitaniteCaTi(SiO4)O
O SpinelMgAl2O4
O Xenotime-(Y)Y(PO4)
O ZirconZr(SiO4)
O Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
O BranneriteUTi2O6
O UraniniteUO2
O Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
FFluorine
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
F ApatiteCa5(PO4)3(Cl/F/OH)
F FluoriteCaF2
F Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
MgMagnesium
Mg DiopsideCaMgSi2O6
Mg SpinelMgAl2O4
AlAluminium
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al SpinelMgAl2O4
SiSilicon
Si QuartzSiO2
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si DiopsideCaMgSi2O6
Si Garnet GroupX3Z2(SiO4)3
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si TitaniteCaTi(SiO4)O
Si ZirconZr(SiO4)
Si Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
Si Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
P Xenotime-(Y)Y(PO4)
SSulfur
S BaryteBaSO4
ClChlorine
Cl Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Cl ApatiteCa5(PO4)3(Cl/F/OH)
CaCalcium
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca DiopsideCaMgSi2O6
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca FluoriteCaF2
Ca ScheeliteCa(WO4)
Ca TitaniteCaTi(SiO4)O
Ca Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
TiTitanium
Ti AnataseTiO2
Ti Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Ti IlmeniteFe2+TiO3
Ti RutileTiO2
Ti TitaniteCaTi(SiO4)O
Ti BranneriteUTi2O6
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe ChromiteFe2+Cr23+O4
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
Fe IlmeniteFe2+TiO3
Fe MagnetiteFe2+Fe23+O4
YYttrium
Y Xenotime-(Y)Y(PO4)
Y Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
ZrZirconium
Zr ZirconZr(SiO4)
Zr Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
SnTin
Sn CassiteriteSnO2
BaBarium
Ba BaryteBaSO4
WTungsten
W ScheeliteCa(WO4)
AuGold
Au GoldAu
UUranium
U BranneriteUTi2O6
U UraniniteUO2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Ann P.Sabina (1991), Rocks and Minerals for the Collector, Sudbury to Winnipeg. GSC Misc. Report 49.
Ontario Ministry of Northern Development and Mines MDI Number: MDI41J07NE00018

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