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File Created: 17-Jul-1986 by Larry Jones (LDJ)
Last Edit:  30-Aug-1999 by Peter S. Fischl (PSF)

Summary Help Help

NMI 103B6 Cu9
Name LUCKY SEVEN, DORATHKALON, PRODUCER, PIPE, ARCHIE Mining Division Skeena
BCGS Map 103B035
Status Past Producer NTS Map 103B06E
Latitude 052º 18' 49'' UTM 09 (NAD 83)
Longitude 131º 11' 41'' Northing 5798188
Easting 350395
Commodities Copper, Silver, Gold, Zinc, Lead Deposit Types I02 : Intrusion-related Au pyrrhotite veins
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

This property is located on the southeast coast of Moresby Island on the lower courses of a creek about 2 kilometres east of Harriet Harbour. The elevation ranges from sea level to 61 metres.

The showing was probably located in 1915 by H.E. Bodine. At the time it was referred to as the Lucky Seven, but it was later called the Dorathkalon and Producer Groups. In 1916 a 15-metre incline shaft and a 18-metre drift were driven.

In 1918 the property was owned by Messrs. Thompson and McKinnon and bonded to Seattle interests. A 114-metre adit was driven, with a 30-metre raise to the old drift; an aerial tramway was installed. In 1920 the property reverted to the owners.

Jedway Iron Ore Limited acquired the property in 1961 as the located Pipe No. 6 claim.

Between 1979 and 1982, Placer Development Limited conducted sampling and geological mapping. In 1987, G.G. Richards sampled the property.

Massive to disseminated sulphides occur over widths of up to 3 metres along the faulted contact between flat-lying black argillites of the Upper Triassic-Lower Jurassic Sandilands Formation (Kunga Group) and a dioritic dike, likely of the Eocene Kano Plutonic Suite (Carpenter Bay dike swarm). The dike and mineralized zone strike 030 and dip 60 degrees southeast.

Mineralization consists of disseminated and massive pyrite, chalcopyrite and pyrrhotite, with minor arsenopyrite and sphalerite, occurring as disseminations and in massive sections up to 25 centimetres wide, along the altered and faulted hanging wall of the dike and in disrupted argillites. Float from the dioritic dike in the immediate vicinity of the working also contains veins of galena and sphalerite. Several chip samples assayed as follows (Assessment Report 17507):

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Cu(%) Pb(%) Zn(%) Ag(g/t) Au(g/t) Description

0.19 0.01 0.25 11.66 0.21 0.5 m of disseminated to massive

sulphides in argillite

9.01 0.01 0.07 275.95 0.34 1.0 metres of dike, including 10

centimetres of massive sulphide

along its hanging wall contact

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Small shipments of hand cobbed ore were made. In 1916, 38 tonnes of hand cobbed ore were shipped. From this 1866 grams of gold, 6780 grams of silver and 3781 kilograms of copper were recovered.

Bibliography
EMPR AR 1916-87,515; 1918-38,104; 1919-39; 1920-44,261
EMPR ASS RPT *8197, 10198, 16225, *17507, 19026
EMPR BC METAL MM00724
EMPR BULL *54, p. 198
EMPR EXPL 1980-365; 1981-231; 1987-C346
EMPR INDEX 3-194
GSC BULL 365
GSC MAP 1385A
GSC P *88-1E, pp. 213-216,221-227; 89-1H, pp. 95-112; 90-10, pp. 59-87, 163-172, 465-487; 91-1A, pp. 383-391
MIN REV March/April 1988, pp. 19-24
EMPR PFD 840917, 861034

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