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File Created: 13-Oct-2012 by Karl A. Flower (KAF)
Last Edit:  14-Mar-2023 by Garry J. Payie (GJP)

Summary Help Help

NMI
Name JUNCTION 1, PINCHER Mining Division Fort Steele
BCGS Map 082G038
Status Showing NTS Map 082G07E
Latitude 049º 22' 55'' UTM 11 (NAD 83)
Longitude 114º 35' 13'' Northing 5472716
Easting 675136
Commodities Copper Deposit Types
Tectonic Belt Foreland Terrane Ancestral North America
Capsule Geology

The Junction 1 claims are located at approximately 1800 metres elevation on Pincher Creek, a tributary of the Flathead River.

Recent geological compilations indicated the area to be underlain by sedimentary and volcanic rocks of the Helikian Purcell Supergroup series, consisting of Nicol Creek, Sheppard, Gateway, Phillips, and/or Roosville formations. Undivided Upper Purcell sedimentary strata correlates with the Dutch Creek Formation. Diorite sills have intruded several formations of the Purcell Series.

In 1994, Hudson Bay Exploration completed a program of soil and silt geochemical surveys, and prospecting and geological mapping. Samples of mineralized outcrop (JCT BGR09, 10, 11) returned values up to 3230 parts per million copper and a two-metre chip sample of the same location assayed 1380 parts per million copper (Assessment Report 23503).

In 1995, the main mineralized unit on the property was reported to be a finely crystalline dolomite of the Sheppard Formation which outcrops in a tributary of Pincher Creek (the Pincher Creek showing). Chalcopyrite and pyrite occur as fine-grained disseminations and as tiny stringers generally concentrated along silty laminations in light gray-green dolomite. Malachite is common and rare specks of a gray metallic sulphide (galena?) have been observed. The dolomite is light grey-green in colour and exhibits delicate textural lamination.

Hole DDH JCT-95-01 was set up to intersect the Pincher showing at depth. These red laminated siltstones, having minor green and purple intervals, and were slightly limey. The core is moderately fractured and easily broken along bedding planes. Within these siltstones is a 10-metre basaltic sill with chill margins and an amygdaloidal upper margin. Underlying the siltstones is a mixed sedimentary interval (113.55 to 121.21 metres) composed of interbedded siltstones, arenites, and dolomites, including the targeted dolomite (118.48 to 121.21 metres). This 2.73-metre intersection of dolomite is gray, fine-grained, and locally thinly laminated. Malachite-stained fractures occur over approximately 20 centimetres in the upper portion of the unit. Beneath the dolomite is amygdaloidal basalt (121.21 – 136.50 metres). Underlying the basalt is another sequence of mixed clastic rocks (136.50 to 171.66m) consisting of various siltstones and quartzites. From 171.66 metres to end of the hole (175.91 metres) is a reddish-brown basaltic flow or sill. The top 50 centimetres contains 1-3 per cent large cubic pyrite and minor fine-grained chalcopyrite. This 50-centimetre interval graded 0.056 per cent copper (Assessment Report 24171).

WORK HISTORY

In 1970 and 1971, Alcor Minerals Ltd. conducted mineral exploration on their North Kootenay Pass property which included stream sediment sampling and prospecting. Alcor's initial phase in August 1970 consisted of the collection of 231 stream sediment samples that were assayed for copper, lead, and zinc. The samples were also collected from Alcor's Commerce Peak and La Coulotte properties. No stream sediment anomalies were reported on the North Kootenay Pass property in 1970 (Assessment Report 3160). The second phase of Alcor's work was on the 70 Mike and Goof claims near North Kootenay Pass and was conducted in August of 1970 when total of 40 samples of stream and spring waters were collected and analyzed for copper, lead, and zinc. The geochemical survey revealed a number of anomalous or slightly anomalous concentrations of zinc, but no anomalous concentrations of copper or lead were found (Assessment Report 3161). This work led to the discovery of several minor occurrences, including the Mike 30 and Goof 30 showings (082GSE016 and 082GSE058). Both of these showings are described as disseminated chalcocite, chalcopyrite, and bornite within quartzite units of the Grinnell Fm, and located southeast of the Junction property.

In 1994 Hudson Bay Exploration & Development Co. collected 17 rock, 56 silt, and 645 soil samples on their Junction property (Assessment Report 23503).

In 1994, Hudson Bay collected a further 42 silt samples and 124 soil samples on their Junction property, as well as geological mapping and excavator trenching. In 1995, Hudson Bay drilled 306.1 metres in 2 diamond-drill holes (Assessment Report 24171).

Bibliography
EMPR ASS RPT 3160, 3161, *23503, *23593, *24171
EMPR GEM 1970-477
EMPR PFD 810672, 908320, 884457
GSC MEM 336
GSC Open File 7476
GSC P 61-24
GCNL #178
PR REL Ecstall Mining Corporation Feb.6, 1995

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