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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 -

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Lock Map
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:

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.
Formula: SiO2
Reference: Donnelly, C. L. et al. (2007): Lithos 98, 160-176.
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.
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
Group 4 - Oxides and Hydroxides
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

Semi-metals and non-metals
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Unclassified Minerals, Mixtures, etc.
'Clinopyroxene Subgroup'-
'Fayalite-Forsterite Series'-
'Garnet Group'-X3Z2(SiO4)3
var: Ferropericlase

List of minerals for each chemical element

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

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]

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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