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Diavik Mine, Lac de Gras, Northwest Territories, Canadai
Regional Level Types
Diavik MineMine
Lac de Gras- not defined -
Northwest Territories- not defined -
CanadaCountry

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Latitude & Longitude (WGS84): 64° 29' 56'' North , 110° 14' 19'' West
Latitude & Longitude (decimal): 64.49901,-110.23880
GeoHash:G#: ce3wgmwtc
Owned/operated by:Rio Tinto Group (60%), Dominion Diamond Mines (40%)
Locality type:Mine
Köppen climate type:Dfc : Subarctic climate


The Diavik Diamond Mine is located on a 20 square kilometre island, informally called East Island, in Lac de Gras, approximately 300 kilometres by air northeast of Yellowknife, capital of Canada's Northwest Territories.
Diamonds in Kimberlite are mined here since January 2003. 25.7 Mt of proven and probable ore reserves at an average grade of 4.2 cpt.
The mine consists of three kimberlite pipes associated with the Lac de Gras kimberlite field and is located on an island 20 square kilometres (8 sq mi) in Lac de Gras and is informally called East Island.

Planned production of six million carats of diamonds annually.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

4 valid minerals.

Detailed Mineral List:

Chromite
Formula: Fe2+Cr3+2O4
Reference: Donnelly, C. L. et al. (2007): Lithos 98, 160-176.
'Clinopyroxene Subgroup'
Reference: Donnelly, C. L. et al. (2007): Lithos 98, 160-176.
Coesite
Formula: SiO2
Reference: Donnelly, C. L. et al. (2007): Lithos 98, 160-176.
Diamond
Formula: C
Reference: Rocks & Minerals 81:278-283
'Fayalite-Forsterite Series'
Reference: Donnelly, C. L. et al. (2007): Lithos 98, 160-176.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Donnelly, C. L. et al. (2007): Lithos 98, 160-176.
Periclase
Formula: MgO
Reference: Donnelly, C. L. et al. (2007): Lithos 98, 160-176.
Periclase var: Ferropericlase
Formula: (Mg,Fe)O
Reference: Donnelly, C. L. et al. (2007): Lithos 98, 160-176.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Diamond1.CB.10aC
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Coesite4.DA.35SiO2
Periclase4.AB.25MgO
var: Ferropericlase4.AB.25(Mg,Fe)O
Unclassified Minerals, Rocks, etc.
'Clinopyroxene Subgroup'-
'Fayalite-Forsterite Series'-
'Garnet Group'-X3Z2(SiO4)3

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
AX
Periclase4.2.1.1MgO
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Coesite75.1.4.1SiO2
Unclassified Minerals, Mixtures, etc.
'Clinopyroxene Subgroup'-
'Fayalite-Forsterite Series'-
'Garnet Group'-X3Z2(SiO4)3
Periclase
var: Ferropericlase
-(Mg,Fe)O

List of minerals for each chemical element

CCarbon
C DiamondC
OOxygen
O Garnet GroupX3Z2(SiO4)3
O ChromiteFe2+Cr23+O4
O CoesiteSiO2
O Periclase (var: Ferropericlase)(Mg,Fe)O
O PericlaseMgO
MgMagnesium
Mg Periclase (var: Ferropericlase)(Mg,Fe)O
Mg PericlaseMgO
SiSilicon
Si Garnet GroupX3Z2(SiO4)3
Si CoesiteSiO2
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe ChromiteFe2+Cr23+O4
Fe Periclase (var: Ferropericlase)(Mg,Fe)O

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: 3188269
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

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