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File Created: 25-Aug-1995 by Gilles J. Arseneau (GJA)
Last Edit:  05-Sep-1995 by Gilles J. Arseneau (GJA)

Summary Help Help

NMI
Name MORNING GLORY, MOUNTAIN GOAT Mining Division Golden
BCGS Map 082K039
Status Showing NTS Map 082K08W
Latitude 050º 21' 21'' UTM 11 (NAD 83)
Longitude 116º 19' 59'' Northing 5578408
Easting 547444
Commodities Copper, Silver Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Omineca Terrane Ancestral North America
Capsule Geology

The Morning Glory occurrence is located on the north flank of Coppercrown Mountain near Coppercrown Creek, at 1675 metres elevation above sea level in the Golden Mining Division.

The area is underlain by Proterozoic clastic sedimentary rocks and Cretaceous intrusive rocks. The occurrence is within the Dutch Creek Formation of the Proterozoic Purcell Supergroup. The Purcell Supergroup strata include the Aldridge, Creston, Kitchener, Dutch Creek and Mount Nelson formations (Paper 1990-1).

In the vicinity of the occurrence, rocks of the Kitchener and Dutch Creek formations have been further subdivided and assigned to the Van Creek and Gateway formations (Open File 1990-26).

The Dutch Creek Formation includes green and black laminated argillite, quartzite, siltstone and buff dolomitic siltstone. The Van Creek Formation consists mainly of coarse to medium grained, light grey to dark green quartzite, siltstone and silty argillite and correlates with the strata of the Lower Kitchener Formation.

The Gateway Formation consists of an interbedded sequence of quartzite, green siltstone and buff dolomite that correlates with the lower portion of the Dutch Creek Formation. The contact with the underlying Van Creek Formation is gradational or marked by the basaltic flows of the Nicol Creek Formation.

The sedimentary rocks have undergone regional metamorphism to at least greenschist facies.

The occurrence consists of three quartz veins 5 to 20 centimetres wide that contain chalcopyrite. A grab sample from one of the veins assayed 21 per cent copper and 200 grams per tonne silver (Minister of Mines Annual Report 1905). The veins are hosted within Dutch Creek argillite and quartzite (Open File 1990-26).

Bibliography
EMPR AR *1905-805
EMPR FIELDWORK 1989, pp. 29-37
EMPR GEOS MAP 1995-1
EMPR OF 1990-26, Fig. 31
EMPR PF (82KSE General File - Geology map by P. Billingsley, 1958)
GSC MAP 1326A
GSC MEM 369
Pope, A.J. (1989): The Tectonics and Mineralization of the Toby- Horsethief Creek Area, Purcell Mountains, Southeast British Columbia, Canada, unpublished Ph.D. Thesis, University of London, England

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