The Kalum Lake occurrence is located on the west side of Kitsumkalum Lake about 29 kilometres north of Terrace.
The Kalum Lake showing area is underlain by Upper Jurassic to Lower Cretaceous sediments of the Bowser Lake Group comprised mainly of argillite, greywackes and conglomerates. Generally, the sediments strike west and dip 75 degrees to the north. Stocks comprised of granodiorite, diorite and quartz monzonite of the Late Cretaceous to Tertiary Coast Plutonic Complex intrude the Bowser Lake sediments. High grade gold-bearing quartz veins fringe the Allard stock near its contact with Bowser Lake Group country rocks. The stock consists of hornblende-biotite granodiorite to diorite. The Allard stock is also described as a composite pluton with an eastern syenitic phase.
Alteration in the granodioritic intrusion is directly related to the density of veining and shearing. The predominant type is propylitic with lesser silicification and epidote-hematite alteration.
Two granodioritic stocks, about 2.25 kilometres apart, are exposed and exhibit extensive hydrothermal alteration with associated mineralization. Two epigenetic, steeply dipping, auriferous quartz veins, termed the #1 and #2 veins, are exposed at the main showing. The #1 vein is approximately 30 centimetres wide, strikes 037 degrees and dips 45 degrees southeast. Selected samples from a dump site assayed up to 193 grams per tonne gold and 477 grams per tonne silver (Assessment Report 13303).
A parallel vein (#2 vein), 150 metres southwest of the #1 vein, dips 65 degrees southeast and is exposed for about 30 metres along strike with variable thicknesses ranging between 15 to 60 centimetres. Drilling reports indicate that both the #1 and #2 veins steepen to subvertical at depth.
Mineralization within these veins consists of pyrite, chalcopyrite, tetrahedrite, galena, sphalerite and occasional visible gold within a quartz gangue. Selected trench samples assayed up to 251 grams per tonne gold and 226 grams per tonne silver (Assessment Report 13303). A third sub-parallel vein, 10 centimetres in width, parallels the north wall and comes to within 5 centimetres of the #2 vein.
A 52.4 kilogram bulk sample taken from these veins assayed 11.86 grams per tonne gold and 15.43 grams per tonne silver. Reserves reported for the two main veins are estimated at 9434 tonnes grading 16.1 grams per tonne gold to a depth of 45 metres (Collins and Arnold, 1987).
In addition to the main site, a subsidiary mineralized zone is exposed about 2.25 kilometres to the southwest within an intensely altered granodiorite intrusive (refer to Burn, 103I 211).
Shipments of selected ore were made in 1940, 1941 and 1945, totalling 15.75 tonnes with 781 grams of gold, 1223 grams of silver and 2173 kilograms of copper recovered (Minister of Mines Annual Reports 1940, 1941 and 1945).
In 1919, C.A. Smith of Terrace staked the original Lakeside claims. The Portland and West Portland claims were staked in 1922. Between 1923 and 1925, the newly formed Kalum Mines Ltd. conducted considerable work on the property which consisted of shaft sinking and drift development along the main (Portland - #1) vein discovered in 1919. Two shafts were sunk with the east shaft reaching 9.1 metres depth and the main or west shaft developed to 18.2 metres with 64 metres of drifting westerly along the vein. Approximately 90 metres southeast of the main vein, Kalum Mines Ltd. put in a 26-metre adit along a second vein (#2 Vein). Assay values from samples of this vein collected in 1937 contained only minor amounts of gold and silver.
In 1972, the original claims were restaked as the Bav 1-4 by J. Apolczer of Terrace. One drillhole 114 metres in length was drilled in an attempt to intersect the main vein and a zone of silicification lying adjacent to the known mineralized structure and workings. Drill records indicate that the main vein was not located but granodiorite with areas of quartz veining and weak alteration were intersected.
By the end of 1983, the property owner was Bradner Resources. Kalum Lake Mining Group was formed at this time and they trenched and sampled along the Main and #2 veins. Five trenches were dug using a tracked hoe accompanied by blasting and hand trenching.
In 1984, OreQuest Consultants was retained by Bradner Resources to complete a soil geochemical survey over the southwestern portion of the claim block (Burn Showing area). A total of 576 soil samples and 17 rock samples were collected. A 4 kilometre cut base line was used for control. Results from the survey indicated a coincident gold-silver-arsenic anomaly in the area of a granodiorite knob.
In 1987, a 395 metre NQ diamond drilling program was undertaken on the Kalum property under the supervision of OreQuest Consultants Ltd. At the time, the claims were owned by Terracamp Development Limited through an option with the Kalum Lake Mining Group. The objective of the program was to test the known gold bearing quartz veins and to locate additional mineralized zones. Two holes were drilled from one setup, with a third hole collared approximately 60 metres southeast. The continuity of the vein systems and mineralization was established to a depth of 120 metres and 65 metres for the #1 and #2 veins, respectively. Strike extensions of 150 metres on the #1 vein and 60 metres on the #2 vein were also proven. Visible gold was encountered in the #2 vein in holes DDH-TR-87-1 and 87-2, and was also present at surface in the #1 vein.
A 52.4 kilogram bulk sample taken from these veins and an inferred reserve reported for the two main veins were estimated in 1987. Reconnaissance sampling of historical trenches in the area of the Burn showing was also done in 1987.
The last work recorded on the Kalum Lake property was in 1988 by Terracamp Developments Ltd. who planned a significant underground development program. A bulkhead was placed in front of the break into the old drift and a slash was started to turn on the #2 vein. The work was halted for financial reasons. OreQuest Consultants Ltd. surveyed, mapped and sampled the crosscut and sampled the old drift. However, the area where the crosscut broke into the old drift was very unstable and no detailed mapping or sampling program was attempted.
By 2003, Eagle Plains Resources Ltd. had acquired the 500-unit Kalum property to cover the Allard stock, a 4 by 11 kilometre intrusion that has been mapped west of Kitsumkalum Lake. The Kalum property encompasses several historically documented occurrences referred to in their 2003 Assessment Report 27417: Kalum (103I 019), Burn (103I 211), Quartz Silver (103I 018), Allard (103I 151), Misty (103I 213), Chris (103I 174), Martin (103I 020) and Hat (103I 173). Several new discoveries were also described.
In 2004, Eagle Plains Resources Ltd. continued exploration for an intrusion-related gold deposit on its Kalum property. The program comprised a 1500 line kilometre airborne geophysical survey, on-the-ground evaluation of targets and the drilling of 19 holes, totaling 1958 metres. The geophysical survey recovered magnetic and time-domain electromagnetic data. Five holes at the Kalum prospect (103I 019) returned a best intercept of 16.6 grams per tonne gold in a 1.1 metre wide vein (Exploration and Mining in British Columbia 2004, page 33).
In 2005, Eagle Plains Resources completed a program of soil, silt and rock sampling and geological mapping on the area. A select grab sample (KALPOR-12) from the waste dump assayed 811.1 grams per tonne gold (Daignault, P.M., Sharp, R.J. (2007-12-27): 2007 Exploration and Geological Report for the Kalum Property).
In 2007, Mountain Capital Inc. optioned the property and in 2008 undertook a program of soil and rock sampling, a 4.1 line-kilometre induced polarization survey and 11 diamond drill holes on the Burn (MINFILE 103I 211) occurrence area. The option was terminated in May of 2009.
In 2008, an exploration program on behalf of Eagle Plains Resources Ltd. was directed towards exploring and attempting to define a broad zone of gold mineralization in a satellite granodiorite “stock” located in the southeast corner of the property. The work program consisted of 7.75 line kilometres of grid establishment, collection of 55 soil and 8 rock samples, 4.1 line kilometres of induced polarization survey and the drilling of 11 NQ diamond-drill holes totalling 1390 metres. The results from this exploration program revealed that the granodiorite “stock” is in fact a thrust emplaced granodiorite mass overlying a sequence of argillite/greywacke. Weak but pervasive gold mineralization associated with pyritic quartz stringers and veinlets is widespread in the stock (Assessment Report 30479).
In 2009, Windstorm Resources Inc. entered into a Letter of Intent with Eagle Plains Resources to earn a 60 per cent interest in the property and completed a program of prospecting, geochemical sampling and an induced polarization survey on the area.
In 2010, a program of geological mapping and six diamond drill holes, totalling 419.11 metres, were completed on the Tuppie-Cirque (MINFILE 103I 228) occurrence.
In early 2012, Clemson Resources Corp. entered into an Option Agreement with Eagle Plains Resources to acquire a 60 per cent interest in the property.
In 2019, Gold Fountain Resources Inc. undertook a program of rock, soil and silt sampling several kilometres west of the Kalum Lake prospect, resulting in the discovery of two new gold showings (Poznan and Opole) on their Kalum Gold property (Assessment Report 38630).