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Gahcho Kué mine, Lac de Gras, Northwest Territories, Canadai
Regional Level Types
Gahcho Kué mineMine
Lac de Gras- not defined -
Northwest Territories- not defined -
CanadaCountry

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Latitude & Longitude (WGS84): 63° 26' 6'' North , 109° 12' 0'' West
Latitude & Longitude (decimal): 63.43522,-109.20001
GeoHash:G#: ce62gh4bz
Owned/operated by:De Beers Group of Companies (85%) - a group of companies owned by Anglo American plc
Locality type:Mine
Köppen climate type:Dfc : Subarctic climate


Diamondiferous kimberlites.
Officially opened on September 20, 2016
Open pit mining of three kimberlite pipes in sequence: 5034, Hearne and Tuzo.
An open pit diamond mining operation opened in August 2016 with an estimate lifetime of 12 years.

It works three kimberlite pipes, the 5034, Hearne and Tuzo pipes.

The mine covers 1,200 hectares and the average annual production (2016/7) is ~4.5M Carats.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

13 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!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Albite-Anorthite Series'
'Apatite'
Baryte
Formula: BaSO4
'Biotite'
'Breccia'
Calcite
Formula: CaCO3
'Chlorite Group'
Chromite
Formula: Fe2+Cr3+2O4
Diamond
Formula: C
Reference: http://www.pdiam.com/s/LacdeGras.asp; https://www.debeersgroup.com/canada/en/operations/mining/gahcho-kue-project.html
'commodity:Diamond'
Reference:  
Diopside
Formula: CaMgSi2O6
'Eclogite'
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Fayalite-Forsterite Series'
Forsterite
Formula: Mg2SiO4
'Granite'
Hematite
Formula: Fe2O3
'Kimberlite'
'Melilite Group'
Formula: Ca2M(XSiO7)
Monticellite
Formula: CaMgSiO4
'Peridotite'
Perovskite
Formula: CaTiO3
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
'Pyroxenite'
Quartz
Formula: SiO2
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Wollastonite
Formula: CaSiO3

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Diamond'1.CB.10aC
Group 4 - Oxides and Hydroxides
'Chromite'4.BB.05Fe2+Cr3+2O4
'Hematite'4.CB.05Fe2O3
'Perovskite'4.CC.30CaTiO3
'Quartz'4.DA.05SiO2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Baryte'7.AD.35BaSO4
Group 9 - Silicates
'Diopside'9.DA.15CaMgSi2O6
'Epidote'9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Forsterite'9.AC.05Mg2SiO4
'Monticellite'9.AC.10CaMgSiO4
'Phlogopite'9.EC.20KMg3(AlSi3O10)(OH)2
'Wollastonite'9.DG.05CaSiO3
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Apatite'-
'Biotite'-
'Breccia'-
'Chlorite Group'-
'Eclogite'-
'Fayalite-Forsterite Series'-
'Granite'-
'Kimberlite'-
'Melilite Group'-Ca2M(XSiO7)
'Peridotite'-
'Pyroxenite'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Diamond1.3.6.1C
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Perovskite4.3.3.1CaTiO3
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Monticellite51.3.2.1CaMgSiO4
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
Single-Width Unbranched Chains, W=1 with chains P=3
Wollastonite65.2.1.1cCaSiO3
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Apatite'-
'Biotite'-
'Breccia'-
'Chlorite Group'-
'Eclogite'-
'Fayalite-Forsterite Series'-
'Granite'-
'Kimberlite'-
'Melilite Group'-Ca2M(XSiO7)
'Peridotite'-
'Pyroxenite'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H PhlogopiteKMg3(AlSi3O10)(OH)2
H Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
CCarbon
C CalciteCaCO3
C DiamondC
OOxygen
O BaryteBaSO4
O CalciteCaCO3
O ChromiteFe2+Cr23+O4
O DiopsideCaMgSi2O6
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O ForsteriteMg2SiO4
O HematiteFe2O3
O Melilite GroupCa2M(XSiO7)
O MonticelliteCaMgSiO4
O PerovskiteCaTiO3
O PhlogopiteKMg3(AlSi3O10)(OH)2
O QuartzSiO2
O Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O WollastoniteCaSiO3
MgMagnesium
Mg DiopsideCaMgSi2O6
Mg ForsteriteMg2SiO4
Mg MonticelliteCaMgSiO4
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
Mg Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
SiSilicon
Si DiopsideCaMgSi2O6
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si ForsteriteMg2SiO4
Si Melilite GroupCa2M(XSiO7)
Si MonticelliteCaMgSiO4
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si QuartzSiO2
Si Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Si WollastoniteCaSiO3
SSulfur
S BaryteBaSO4
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Melilite GroupCa2M(XSiO7)
Ca MonticelliteCaMgSiO4
Ca PerovskiteCaTiO3
Ca WollastoniteCaSiO3
TiTitanium
Ti PerovskiteCaTiO3
CrChromium
Cr ChromiteFe2+Cr23+O4
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe ChromiteFe2+Cr23+O4
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
Fe Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
NiNickel
Ni Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
BaBarium
Ba BaryteBaSO4

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Neoarchean
2500 - 2800 Ma



ID: 646097
Igneous: intrusive; Intrusive: granitic

Age: Neoarchean (2500 - 2800 Ma)

Description: North America, Slave Craton

Comments: Craton and massif; Hoffman et al., 1993; Stubley, 2005; Tella et al., unpublished compilation, 2007-08a

Lithology: Granite, granodiorite, tonalite, quartz diorite, diorite, gabbro

Reference: J.C. Harrison, M.R. St-Onge, O.V. Petrov, S.I. Strelnikov, B.G. Lopatin, F.H. Wilson, S. Tella, D. Paul, T. Lynds, S.P. Shokalsky, C.K. Hults, S. Bergman, H.F. Jepsen, and A. Solli. Geological map of the Arctic. doi:10.4095/287868. Geological Survey of Canada Map 2159A. [2]

Neoarchean
2500 - 2800 Ma



ID: 3186128
Archean intrusive rocks

Age: Neoarchean (2500 - 2800 Ma)

Lithology: Intrusive igneous rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Caro, G., Kopylova, M. G., & Creaser, R. A. (2004). The hypabyssal 5034 kimberlite of the Gahcho Kue cluster, southeastern Slave craton, Northwest Territories, Canada: a granite-contaminated Group-I kimberlite. The Canadian Mineralogist, 42(1), 183-207.

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