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File Created: 06-Nov-1986 by Larry Jones (LDJ)
Last Edit:  25-May-2021 by Del Ferguson (DF)

Summary Help Help

NMI 103I9 Cu38
Name DF, NORTHWEST, SNOW 31 Mining Division Omineca, Skeena
BCGS Map 103I050
Status Prospect NTS Map 103I08E
Latitude 054º 28' 49'' UTM 09 (NAD 83)
Longitude 128º 01' 16'' Northing 6037401
Easting 563424
Commodities Copper, Silver Deposit Types D03 : Volcanic redbed Cu
L01 : Subvolcanic Cu-Ag-Au (As-Sb)
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The DF prospect is on upper southwest-facing ridge sides north of Zymoetz (Copper) River, approximately 38 kilometres east of Terrace, B.C. The DF zone was was intensely trenched in the 1960’s. It lies approximately 900 metres southwest of the Purdex zone on the Treasure Mountain property.

The DF prospect is within a greater than 14 kilometre north trending zone of copper+/-silver mineralization extending from Clore River valley to Kleanza River valley.

This historic The area is underlain by volcanic rocks of the Jurassic Hazelton Group which include 010 degree striking, 55 degree east dipping, vesicular purple feldspar porphyry and red and purple tuffs and lapilli tuffs. These are cut by a brown feldspar porphyry sill, a trachytic sill and a microdiorite dyke.

Bornite, chalcocite, chalcopyrite and malachite occur as dis- seminations, in vesicles and in fractures within the purple flow rocks and tuffs and, to a lesser degree, the porphyry sill. The best ore occurs along an east fault in the top of the trachytic porphyry and adjacent purple porphyry and tuff.

The mineralized zone (No. 2 Zone) is about 120 metres long and 90 metres wide. A 13 metre sample from a trench assayed 1.54 per cent copper (Property File: Campbell, 1964). A 13 metre long trench completed in the 1960’s, averaged 1.54% copper.

In 2011, Trade Winds Ventures Inc. contracted Fugro Airborne Surveys Corp. to fly an electromagnetic and magnetic airborne geophysical survey over the Treasure Mountain property, including the DF zone (Assessment Report 33288).

Several grab samples collected from the DF prospect in 2018 by Decade Resources Ltd. returned from 0.17 to 2.57 per cent copper and from 0.9 to 34.8 grams per tonne silver (Assessment Report 37602).

Bibliography
EMPR AR 1964-48; *1965-71,72
EMPR ASS RPT 3959, 3960, 28304, 29726, *30780, 33288, 37213, *37602
EMPR GEM 1972-500; 1973-486
EMPR MAP 69-1; 8
EMPR OF 2006-3, 2007-4, 2008-3
EMPR PAPER 2009-01 pp.7-20
EMPR PF (*Rpt by Campbell, D.D., 1964)
EMPR PF Placer Dome (Unknown (1990): Field notes on Northwest claims, Copper River area; Unknown: Claim map of the Northwest Group)
EMR MP CORPFILE (Purdex Minerals Limited; Treasure Mountain
Copper Limited; Metron Exploration Limited; Spectroair
Explorations Limited)
GEOS BC RPT 2008-11
GSC MAP 11-1956; 278A; 1136A; 1385A
GSC MEM 329
www.decaderesources.ca

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