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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  04-Apr-2022 by Karl A. Flower (KAF)

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NMI 104K7 Mo1
BCGS Map 104K037
Status Prospect NTS Map 104K07E
Latitude 058º 18' 40'' UTM 08 (NAD 83)
Longitude 132º 38' 35'' Northing 6465765
Easting 638089
Commodities Molybdenum, Copper, Zinc Deposit Types L05 : Porphyry Mo (Low F- type)
Tectonic Belt Insular Terrane Stikine
Capsule Geology

At the Trapper Lake molybdenum prospect foliated diorite and granodiorite of Middle to Upper Triassic are intruded by irregular stocks of quartz monzonite and alaskite, which are part of the Paleocene to Eocene Sloko-Hyder Plutonic Suite North trending diorite dikes cut all the rocks. The prominent mineralized quartz vein and joint directions trend about 120 degrees and dip 80 to 90 degrees northeast or southwest. Prominent fractures, faults and shear zones strike 30 to 50 degrees and dip 60 to 70 degrees northwest. Alteration types, mainly within the alaskite, include potassic, argillic, sericitic and propylitic.

In 1977, Mattagami Lake Mines described the mineralization as being 1 kilometre in a northwest-southeast direction and (making certain assumptions) 2 to 3 kilometres in a northeast-southwest direction (Assessment Report 6897).

Disseminated and fracture and vein filled molybdenite occur mainly within three alaskite bodies, described as the west, central and east zones. The west mineralized area measures about 800 by 160 by 50 metres. In this zone, quartz veins, 0.5 centimetre to 2 metres wide and mainly within the diorite, contain pyrite, molybdenite, powellite and occasional chalcopyrite, rutile and sphalerite. Channel sampling from trenches averaged 0.17 per cent molybdenite over 12.5 metres (Assessment Report 6897). A hole drilled in 1972 intersected 0.18 per cent molybdenite over 15.2 metres (National Mineral Inventory card 104K/7 Mo1).

In the east zone, quartz veins and joints commonly strike 100 degrees and dip 70 degrees north. The molybdenite occurs mainly as large rosettes, erratically distributed within alaskite. The east zone is about 1.4 kilometres from the west zone and measures about 400 by 200 metres. Drilling in 1972 intersected 0.55 per cent molybdenite over 3.3 metres in one hole and 0.86 per cent molybdenite over 1.8 metres in another (National Mineral Inventory card 104K/7 Mo1).

Minor mineralized veins, which strike 20 degrees and dip 60 to 80 degrees northwest, occur to the south.


The showing, described as being on the Elaine claims, was visited by J.G. Souther (GSC Memoir 362) during field work in the area in 1959-1960. The ground was apparently restaked in 1962 by Mr. Godfrey, a prospector for Southwest Potash Corporation, but no work was done, and the claims were allowed to lapse.

The property was restaked as the Karen group (18 claims) by Denis Odian of Atlin in 1970 and subsequently optioned to Eberhard Mueller. Mr. Mueller transferred the claims to Hesca Resources Corporation Ltd., which was incorporated in October 1971. Additional staking was done in the Karen, MO, and Trapper groups for a total of 53 claims.

In November 1971 the company entered into a Joint Venture agreement with Plateau Metals & Industries Ltd for exploration work on the property. Campbell, 1971, prior to any physical work having been done on the property, estimated a total inferred tonnage in 3 zones at 60 million tons with a grade similar to Adanac's (0.16 per cent MoS2) (D.D. Campbell, 19/11/71, VSE SMF 21/04/72, Plateau Metals & Industries L (Property File and National Mineral Inventory 104K7 Mo1)). Work during 1972 included geological mapping, and 1,041 feet (317 metres) of diamond drilling in 3 holes on Karen 40 A, 77 A, and 89 A (West and East Zone). The company name, Plateau Metals, was changed in October 1972 to Wharf Resources Ltd. Wharf terminated the option at the end of the year due to unfavorable drilling results. The best intersections from 197.8 metres of drilling in 2 holes in the East zone were 3.3 metres at 0.55 per cent MoS2 and 1.8 metres at 0.86 MoS2. The one hole drilled in the West zone (119.5 metres) assayed for the most part less than 0.05 per cent MoS2, but one 15.2 metre section assayed 0.18 per cent MoS2. The claims were subsequently allowed to lapse.

Work in 1972 and consisted of the detailed geological mapping of Zone A (west) and Zone C (east), the reconnaissance geological mapping of zones B (central) and D (south), and the drilling of three holes on zones A and C consisting of 317 metres.

Confusion remains unresolved between the above reported 1971 option of the Karen claims by Hesca Resource (from Mr. Odian via Mr. Mueller) as recorded in National Mineral Inventory document and the following reported option by Stikine Resources, from Mr. Odian.

In 1971, it was recorded that a geological photointerpretation was carried out on the Karen claims (1-108) during September, on behalf of Stikine Resources Ltd (Assessment Report 3421). Stikine reported that the central 20 Karen claims were under option from Mr. Odian while the others were owned by Stikine Resources Ltd. Areas of interest economic interest are the fractured portions of the alaskite bodies on the northern part of body #1, the southern part body #2 and to a lesser extent bodies #3, 4 and 5.

The showings were held in 1977 by O.R. Anderson, of Atlin as the Leah 1-8 claims. Mattagami Lake Mines Limited acquired an option on the property and carried out geological mapping, and a geochemical survey comprising 42 stream sediment sample: and 95 rock samples during that same year. Anderson apparently restaked the ground as the Leah No.1 (8 units) and Linda No. 1 (8 units). Georgia Resources Inc., a private company, optioned the property from Anderson and apparently staked the adjacent Tim 1-4, claims (68 units). Glory Explorations Ltd. in November 1980 optioned the property from Georgia Resources.

In 1977, geological mapping and detailed rock sampling were carried out on Leah and Linda claims by Mattagami Lake Mines Limited. A comparison of the Trapper Lake mineralization was made with other porphyry deposits.

In 1980 the mineral zones were restaked by Georgia Resources Ltd and subsequently optioned to Glory Explorations Limited who carried out an exploration program in 1981, including drilling (Assessment Report 9499). Drilling commenced in June; other work was conducted while the drilling was being done and, to some extent, after the drilling was completed. A grid was established over the valley bottom and lower mountain slopes, and a magnetic survey conducted over it. Geological mapping was completed in one area of the property; the remaining area was carefully prospected. All drill core was logged on site and then, after sampling, was stored near the campsite.

In 2020, Brixton Metals Corporation completed a program of geochemical (rock and soil) sampling, a 12.5 line-kilometre ground induced polarization survey, a 715 line-kilometre airborne magnetic and electromagnetic survey and 19 diamond drill holes, totalling 5292 metres, on the area of as part of the Thorn property. Drilling was performed on the Outlaw (MINFILE 104K 176) occurrence area.

EMPR ASS RPT 3421, *6897, 9499, 39429, 40294
EMPR GEM 1972-553
EMPR EXPL 1977-237; 1981-51
EMPR PF (Monthly report by T. Schroeter, Aug. 1980; Reports by Lefebure, D. (1987))
EMR MP CORPFILE (Plateau Metals & Industries Ltd - includes Report on Trapper Lake Molybdenum Property by D.D. Campbell, in Statement of Material Facts, April 1972; Glory Explorations Ltd. - includes Geological Report on Trapper Lake Molybdenum Property by J.R. Chamberlain and C.R. Saunders, in Statement of Material Facts, 51/81)
GSC MAP 6-1960; 1262A
GSC MEM 362, pp. 53,56
GCNL #110, 1981
Burrell, H., Deiss, A.M. (2021-06-23): Thorn Property NI 43-101 Technical Report Sutlahine River Area, British Columbia, Atlin Mining Division