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Mountain River beryl showing, Mackenzie Mts, Mackenzie District, Northwest Territories, Canada

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Latitude & Longitude (WGS84): 64° 23' 39'' North , 129° 28' 23'' West
Latitude & Longitude (decimal): 64.39420,-129.47310
GeoHash:G#: c57ymf8e6
Köppen climate type:ET : Tundra


Non-gemmy emerald deposit hosted in pyritic shales, siltstones and sandstones of the Neoproterozoic Twitya Formation, located at 1,370 metres elevation, 3 km south of Mountain River, 10 km SW of Shale/Palmer Lake, 150 km from Norman Wells, 500 km from Whitehorse (Yukon). Some geological similarities to the world famous colombian emerald deposits.


Mineral List


11 valid minerals.

Rock Types Recorded

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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

Neoproterozoic
541 - 1000 Ma



ID: 3192696
Neoproterozoic sedimentary rocks

Age: Neoproterozoic (541 - 1000 Ma)

Lithology: Sedimentary 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]

Neoproterozoic
541 - 1000 Ma



ID: 630221
Sedimentary; Marine sedimentary: undivided

Age: Neoproterozoic (541 - 1000 Ma)

Description: North America, Cordilleran Orogen (Canada - Alaska, undivided)

Comments: Orogen, fold-thrust belt, folded region; Journeay et al., 2000; Okulitch, 2006

Lithology: Quartz arenite, sandstone, siltstone, shale dolomite, chert, limestone; undivided

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]

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



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

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Hewton, M. L. (2012). Investigation of the Mountain River beryl (emerald variety) occurrence, Mackenzie Mountains, Northwest Territories (MSc dissertation, Science: Department of Earth Sciences).

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