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File Created: 20-Jul-2013 by Karl A. Flower (KAF)
Last Edit:  25-Jul-2013 by Karl A. Flower (KAF)

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NMI
Name CREEK ZONE, REKO, PEARSON Mining Division Victoria
BCGS Map 092C069
Status Showing NTS Map 092C09W
Latitude 048º 38' 52'' UTM 10 (NAD 83)
Longitude 124º 17' 46'' Northing 5389113
Easting 404534
Commodities Copper, Iron, Magnetite, Silver Deposit Types K : SKARN
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Creek zone, discovered in 2009, is located in a west- flowing drainage approximately 40 metres to the east of the Granite Mainline logging road at an elevation of approximately 400 metres. The area has been explored in conjunction with the Reko properties (see MINFILE 092C 091 for a completed exploration history).

The area is mapped by Muller (Geological Survey of Canada Open File 821) as primarily diorite of the Mesozoic and/or Paleozoic Westcoast Complex. An east- trending band of limestone is also mapped. Volcanics of the Lower Jurassic Bonanza Group occur to the north of the Reko property.

The north part of the Reko property is underlain by grey to white crystalline limestone, and the central and south part is underlain mainly by intrusive breccia. Several bodies of limestone also occur in the central and south part. The primary fragments of the breccia are fine- grained and dark grayish- green in colour, resembling andesite, and some contain amygdules. This andesitic rock was successively intruded by mafic-rich and mafic-poor diorite. The breccia grades to massive, mesocratic diorite to the south, and to massive andesite at about the 600 metre level on the west side of the east ridge. A set of long, narrow, fine-grained grey dikes strikes 20 degrees and transects all other rocks. Most limestone bodies have been successively intruded by dikes of andesite and leucodiorite. It is thought that prior to diorite intrusion andesite underlay the limestone and also intruded it.

Locally, a 3 by 3 metre area of massive magnetite associated with a skarn zone, greater than 2 metres thick, is exposed in the creek bed. The magnetite layer is developed parallel to the marble and dioritic intrusives contact with an attitude of about 140 degrees by 48 degrees south west. Locally, several narrow, sub-vertical, skarn zones, containing significant heavily disseminated to banded pyrrhotite, pyrite and chalcopyrite-rich sulphide occur in the immediate area.

In 2003 through 2010, Emerald Fields Resources and Pacific Iron Ore Corporation completed various exploration projects in the area as a part of the Pearson project. These included prospecting, diamond drilling, ground and airborne geophysical surveys, geological mapping and geochemical sampling. In 2009, grab samples assayed up to 0.32 per cent copper and 35.8 per cent iron (Assessment Report 31260). Seven diamond drill holes were completed the same year. The best intersection was from sample G9852334, Hole 09-06-G, which assayed 3.83 grams per tonne silver and 0.536 per cent copper over 1.34 metres from an altered, sulphide-bearing intrusive (Assessment Report 31531).

Bibliography
EMPR ASS RPT *31260, *31531
EMPR FIELDWORK 1989, pp. 503-510
EMPR GEM 1972-242; 1973-226; *1974-166-170
EMPR GEOLOGY *1975 pp. 39-42
EMPR OF *1988-28, p. 56
EMPR OF RGS 24
GSC MAP 1386A
GSC MEM 13
GSC OF 463; 821
GSC P 72-44; 76-1A; 79-30
EMPR PFD 881505

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