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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  24-Jun-2013 by George Owsiacki (GO)

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NMI
Name DICK CREEK, COPPER CREEK, DK, DK CREEK EAST, DK CREEK WEST, DK CREEK NORTH, STAR Mining Division Atlin
BCGS Map 104J022
Status Prospect NTS Map 104J04E
Latitude 058º 14' 04'' UTM 09 (NAD 83)
Longitude 131º 43' 59'' Northing 6458067
Easting 339536
Commodities Copper, Gold Deposit Types L03 : Alkalic porphyry Cu-Au
K01 : Cu skarn
Tectonic Belt Intermontane Terrane Plutonic Rocks, Stikine
Capsule Geology

The Dick Creek occurrence is located on the westerly-facing slopes of "Dick Creek" which is a tributary of the Hackett River, about 52 kilometres northwest of the community of Telegraph Creek.

Upper Triassic Stuhini Group andesitic flow rocks with subordinate sedimentary (tuffaceous) units are intruded by a bulbous, northeasterly elongated quartz diorite pluton. The pluton is at least 1100 metres long and up to 550 metres in width and has a multitude of subsidiary dikes. The intrusions are lithologically similar to the nearby Kaketsa pluton and are, therefore, believed to be cogenetic and coeval with the main intrusion that underlies Kaketsa Mountain to the west (Geology in British Columbia 1977-1981, page 176). The Kaketsa pluton is Late Triassic.

At the Star prospect, the main area of mineralization is exposed by trenches on southwesterly and west-facing slopes immediately to the north of "Dick Creek". Dick Creek is a small, westerly flowing tributary of the Hackett River. In the trenches, mineralization is found near the eastern margin of a small quartz diorite intrusion.

Northwesterly zones with crushed, clay-altered rocks form strong linear depressions, and the intervening rocks are broken by northeasterly trending fractures, joints and small faults. Country rocks are fine-grained andesite and porphyritic andesite or basaltic andesite.

Intrusions and adjoining country rocks are weakly hydrothermally altered to a propylitic assemblage. Saussuritization and chlorite-actinolite replacement of mafic minerals along with lesser epidote, calcite, magnetite and pyrite are the most widespread alteration type observed. The most pronounced alteration in outcrop is caused by near-surface weathering and oxidation. This supergene alteration results in a partially leached capping of clay altered limonitic rocks up to a few metres in thickness. The rocks are fine granular assemblages of quartz, albite, gypsum, zeolite, muscovite, clay minerals, chlorite, limonite and pyrite. These rocks are more abundant where faults and fractures are most strongly developed. Locally, jarosite and stilbite are present.

The "Dick Creek" showings of the Star property are similar to other known copper showings associated with the Kaketsa pluton. However, in this locality disseminated chalcopyrite and bornite are more widespread in the quartz diorite intrusion than in the other areas. In the northerly trenches, where weathering and oxidation are most pronounced, mineralization consists of black copper oxide, malachite, brochantite and cupriferous limonite. In the southerly, downhill trenches where rocks are less weathered, mineralization comprises disseminated chalcopyrite and traces of bornite as well as fracture-controlled malachite and azurite. Where chalcopyrite and bornite are abundant, magnetite is present but pyrite is relatively subordinate or absent. Most commonly, chalcopyrite occurs alone or together with pyrite. There appears to be a broad diffuse zone or halo of pyritic rocks surrounding the copper mineralized zone.

Pyrite is the dominant sulphide mineral in volcanic rocks surrounding the quartz diorite intrusion but overall pyrite content rarely exceeds 1 per cent. Copper sulphides generally replace mafic minerals whereas pyrite is present both as disseminations and fracture filling. Distribution of mineralized outcrops and assays from tractor trenches show that areas with average copper content in excess of 0.4 per cent copper are relatively widespread. Gold values are generally low (average 0.2 gram per tonne) but two samples analysed about 0.5 gram per tonne (Geology in British Columbia 1977-1981, pages 178, 179).

Supergene mineralization is restricted to a thin oxidized capping under which there is no appreciable secondary copper sulphide enrichment zone. The copper minerals that have formed are copper oxides, carbonates, sulphates and cupriferous limonites.

A second mineralized zone in volcanic rocks is located east of Dick Creek, about 500 metres east of the trenched showings. A grab sample of the skarn mineralization consisting of epidote, pyrite and fine-grained chalcopyrite and magnetite analysed 0.72 per cent copper (Geological Fieldwork 1977, page 70).

According to earlier assessment reports, the Copper Creek showing was first discovered in 1937. However, the first documented exploration in the area of the showing occurred in 1955 when Brikon Explorations Ltd. drilled four holes with an aggregate length of 149 metres to test the Copper Creek occurrence; records and hole locations are not available. From 1950-1964 both Kennco and Newmont worked ground primarily to the west of the Copper Creek claims, near the Sheslay River (104J 040) at the Kid (104J 004), Grizzly (104J 016), Ho (104J 023) and West Kaketsa (104J 024) occurrences. In 1964, Newmont Exploration carried out an airborne magnetometer survey over an area which in 2003 was covered by the Copper Creek claims of Firesteel Resources Inc.

From 1958 to 1973, Skyline Explorations Ltd. in conjunction with several joint venture partners, carried out grid geochemical sampling, ground geophysics (magnetics), geological mapping, and diamond drilling (6 holes, 1050 metres) on the Copper Creek occurrence presently covered by the Copper Creek 2 claim of Firesteel Resources, and the Pyrrhotite Creek occurrence (104J 018) (9 holes, 1097 metres) which in 2003 was covered by the PC 1-4 mineral claims. During this period, an induced polarization (IP) survey was conducted over the Pyrrhotite Creek showing area. The drilling was never filed for assessment but is mentioned in later reports. Most claims in the area expired in 1975 and 1976. United Cambridge Mines restaked the Copper Creek prospect in 1976, and discovered the Dick Creek porphyry copper prospect (104J 035). During 1976 and 1977, United Cambridge carried out geological and geochemical survey work in the Dick Creek area covered in 2003 by the Copper Creek 1 claim. An extensive follow-up program of 10 kilometres of bulldozer trenching and road construction was carried out as well. In 1979, Utah Mines Ltd. carried out line cutting, geochemical sampling and geophysical surveying (magnetics, IP) immediately south of the Firesteel’s Copper Creek 2 claims (ca. 2003).

Further evaluation of the area between the Dick Creek and Copper Creek mineral occurrences was carried out in 1980 by United Cambridge Mines which included soil geochemistry and an IP geophysical survey. Further geological mapping and geochemical sampling was carried out by United Cambridge in this area during 1983 and 1984. A coincident gold-in-soil and IP anomaly was outlined between the Copper Creek and Dick Creek occurrences and an IP anomaly with scattered gold-in-soil values was outlined to the north of the Dick Creek occurrence. These anomalies were covered by Firesteel’s Copper Creek property claims in 2003.

Between 1987 and 1989, United Cambridge Mines Ltd. shifted their exploration work to the immediate south of the Copper Creek mineral claims in the area in which Utah had worked in 1979. Work included airborne geophysical surveys (magnetics, VLF-EM), geochemical sampling and geological mapping.

In 1991, Golden Ring Resources Ltd. commissioned Aerodat Limited to carry out 870 line-kilometres of airborne geophysics over 22 claims (including the area covered by Firesteel’s Copper Creek property). A data compilation of results of previous exploration programs within the project area was also carried out.

Follow-up work (223 soils) in the vicinity of the gold-in-soil with coincident IP anomaly (which United Cambridge previously outlined in 1983-84 between the Dick Creek and the Copper Creek occurrences) was carried out by Golden Ring Resources in 1992.

In 1996, Erin Ventures conducted 11.2 kilometres of VLF-EM surveys on the North Dick Creek Target; a total of 77 soil and 2 rock samples were taken. A VLF-EM and soil grid were completed in an area previously referred to as Helicopter Borne VLF anomaly XVI, which outlined an area at least 60 metres wide by 365 metres long with copper-in-soils up to 8510 parts per million and gold-in-soils up to 430 parts per billion. This area was referred to as the North Dick Creek. On the Dick Creek and East Dick Creek occurrences, drill sites were prepared to test the best conductive and geochemical anomalies but mechanical failures allowed for only 21 metres of drilling in four months.

The Cop 1-4 claims held by P. Sorbara were allowed to lapse in April 2001.

In March 2002, the Copper Creek 1 and 2 claims were staked on behalf of D. Mehner, A. Travis and D. Barker. In February 2003, the Copper Creek claims were optioned to Firesteel Resources Inc. In October 2003, Firesteel Resources focused on a small portion of the property near the Dick Creek showing (104J 035) and work consisted of 10.5 line-kilometres of IP and magnetometer surveying and the collection of 460 soil geochemical samples along with partial re-sampling of two old (1977) trenches (25 chip samples) that had never been continuously sampled for gold.

In 2004, Firesteel Resources carried out a program of geological mapping, backhoe trenching totalling 500 metres, soil geochemistry and 1555 metres of diamond drilling in 12 holes on the Copper Creek property focusing on the DK zone (104J 035). The best hole of the program, CUCR 04-05, was angled to the north and cut 0.44 per cent copper and 0.32 gram per tonne gold averaged over its full length of 242 metres, the top 52.3 metres of the hole averaged 0.80 per cent copper and 0.73 gram per tonne gold (Exploration and Mining in British Columbia 2004, page 27). Quartz stockwork with chalcopyrite more abundant than pyrite, is developed across the intensely fractured intrusive contact over an area that now measures 500 by 500 metres in plan and 250 metres deep. Secondary copper minerals (malachite, azurite and sooty chalcocite) predominate in the upper 30-60 metres from the surface. Supergene copper enrichment is evident from assay data of some holes. In 2007-08, Firesteel Resources Inc. reviewed drill core and geologically logged holes CC2007-03 and CC2007-02 ext 3.

In 2011, Firesteel Resources Ltd. conducted an exploration program which comprised drilling short localized holes for sampling using a small backpack drill, in conjunction with prospecting/mapping of the same areas. A total of 19 prospecting samples and 17 AQ drill core samples were taken for analyses. In addition, detailed geologic mapping was

carried out in two areas identified by the co-­occurrence of magnetic, induced polarization chargeability, and soil sampling highs in the Dick Creek area; 98 rock grab samples were also taken.

Bibliography
EMPR EXPL 1976-E193; 1977-E234,E235; 2003-2,4; 2004-27; 2005-30
EMPR FIELDWORK 1974, p. 63; 1977, pp. 69,70
EMPR PF (Claim map (1976); 104J General File - Claim maps 73M, 73 M-1, Dec. 1970)
EMPR GEOLOGY *1977-1981, pp. 175-180
EMPR OF 1996-11
GSC OF 707
GSC BULL 504
GSC MAP 9-1957; 21-1962; 1418A; 1712A; 1713A
GSC SUM RPT 1925, Part A, pp. 33A-99A
GCNL #184(Sept.24),#226(Nov.25), 1976; #225(Nov.23), 1978; #132(Jul.9), 1980; #53(Mar.18), 1981; #143(Jul.27), 1982
PR REL Firesteel Resources Inc., Apr.10, Nov.7, 2003; Jun.8, Jul.20,28, Sept.9, Oct.12,27, Nov.1,24, Dec.1, 2004; Jun.3, 2005
N MINER June 10,27, 2005

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