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File Created: 10-Apr-1990 by George Owsiacki (GO)
Last Edit:  15-Apr-2012 by Nicole Barlow (NB)

Summary Help Help

NMI
Name HEY-BERT Mining Division Nanaimo
BCGS Map 092F018
Status Showing NTS Map 092F01W
Latitude 049º 11' 20'' UTM 10 (NAD 83)
Longitude 124º 27' 35'' Northing 5449480
Easting 393638
Commodities Copper Deposit Types L04 : Porphyry Cu +/- Mo +/- Au
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Hey-Bert showing is located to the west of Moriarty Creek, approximately 25 kilometres south east of Port Alberni.

The area is underlain by Upper Triassic Karmutsen Formation (Vancouver Group) volcanic and volcaniclastic rocks intruded by Jurassic Island Plutonic Suite granodiorite to quartz monzonite. Unconformably overlying these rocks are Cretaceous Nanaimo Group bedded conglomerates, greywackes and sandstones.

The Hey-Bert occurrence comprises Karmutsen Formation massive basalt, feldspar porphyry basalt, basalt flow breccia and basalt tuffs intruded by granodiorite and quartz monzonite of the Island Plutonic Suite. The quartz monzonite rocks contain sporadic zones of intense shearing and/or fracturing with associated potassic (potassium feldspar) or carbonate alteration. An alteration assemblage of quartz, epidote and chlorite occurs primarily in the Karmutsen rocks as fracture-fillings, veinlets or veins. Mineralization consisting of pyrite with trace chalcopyrite are associated with shear/fracture zones and alteration zones in granodiorite and quartz monzonite, with strong linear shears in feldspar porphyry basalt and as pervasive disseminations in altered basalt. A rock sample from sheared granodiorite assayed 0.07 per cent copper (Assessment Report 11356).

Bibliography
EMPR ASS RPT *11356
EMPR FIELDWORK 1987, pp. 81-91; 1988, pp. 61-74
EMPR PF (Gunnex Ltd. (1972-01-01): Labour Day Lake and East Project - Geochemical Map; Douglas, D.C. (1972-01-03): Magnetic Anomalies and Geochemical Map - Englishman River; Douglas, D.C. (1972-08-19): Re: Labour Day Lake and East Project)
GSC MAP 17-1968; 49-1963; 1386A
GSC OF 463; 1272
GSC P 68-50
EMPR PFD 6397, 6407, 6411

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