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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  29-Apr-2022 by Garry J. Payie (GJP)

Summary Help Help

NMI
Name GLASGOW, CT 100, RONCAM Mining Division Clinton, Vancouver
BCGS Map 092N020
Status Showing NTS Map 092N01E
Latitude 051º 10' 24'' UTM 10 (NAD 83)
Longitude 124º 08' 09'' Northing 5669714
Easting 420597
Commodities Copper, Molybdenum Deposit Types L04 : Porphyry Cu +/- Mo +/- Au
Tectonic Belt Coast Crystalline Terrane Stikine
Capsule Geology

The Glasgow occurrence consists of a showing of minor copper-molybdenum mineralization, 200 metres east of Glasgow Lakes, south of Franklyn Arm of Chilko Lake.

It is not well-documented, being based on a map symbol on a claim map (Property File - Renshaw, R.E., 1975). This location is apparently on or close to the contact between a granodiorite intrusion and volcanic rocks. Both the intrusion and the volcanics are known to be mineralized locally with chalcopyrite and molybdenite (Assessment Report 8295). Supplementing this indirect information, the possible setting of mineralization at the Glasgow showing is given here.

The area west of the Glasgow occurrence is dominated by a differentiated biotite granodiorite to quartz monzonite intrusion of the Upper Cretaceous to Paleocene Bendor suite. The granodiorite was intruded into the Lower Cretaceous Tchaikazan River succession consisting of andesitic, dacitic and basaltic tuffs and breccias, and minor argillite (Geological Survey of Canada Open File 1163; Assessment Report 8295). Regionally strata strike northwest and dip moderately to steeply northeast, although their orientations may be modified by the intrusion.

The interior of the granodiorite contains widely-spaced fractures, between 0.25 and 1.0 centimetre thick, filled with quartz which is locally vuggy (Assessment Report 8295). They strike east and dip moderately north or south. Some veins contain weak chalcopyrite and molybdenite. This was interpreted as weak, porphyry-type mineralization.

The contact with the Lower Cretaceous volcanics is generally characterized by hornfelsing and chloritic alteration, and locally by gossanous zones due to the oxidation of disseminated pyrite and pyrrhotite (Assessment Report 8295). These sulphides may be accompanied by very minor chalcopyrite and molybdenite.

The Glasgow occurrence is located approximately on the contact between the granodiorite intrusion and the Lower Cretaceous volcanics. Thus, it could contain either or both of the mineralization types described above.

No significant values of copper or molybdenum have been reported.

Refer to Daisie (092N 026) for further details.

Bibliography
EMPR ASS RPT *8295
EMPR BULL 81, p. 83
EMPR EXPL 1980-277
EMPR PF (Renshaw, R.E. (1975): Geological Report on the Roncam Group)
EMPR PFD 673336, 673337
GSC OF 1163
GSC P 68-33
GSC MAP 5-1968

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