Kirkland Lake

Location: Teck Township
Years of Operation: 1916 – 1960
Tons Milled: 3,140,283
Ounces of Gold Produced: 1,172,955

 

 

 

 

Reproduced with permission of Kirkland Lake Gold Inc.

Kirkland Minerals

The Kirkland Minerals mine is near the western end of the Kirkland Lake camp bounded to the west by the Macassa mine and to the east by the Teck-Hughes mine. A total of 1,172,955 ounces of gold at an average grade of 0.37 oz/T was mined between 1919 and 1960. The mine ranks sixth out of the seven mines in Kirkland Lake in terms of total ounces produced and average head grade.

The first reported discovery was in 1911 on Claim L1236 (what was to become the shaft claim) staked by C.A. McKane. A short while later, in 1912 the Main Break was discovered on the claim. In 1913 a two-compartment shaft (to become Kirkland Lake Gold No.1) was sunk to 80 feet by Kirkland Gold Mines Limited. The No. 1 shaft was deepened, in 1915, to 200 feet and a level was established at 175 feet by Beaver Consolidated Mines Limited (under option from Kirkland Lake Gold Mines Limited).

From 1916 to 1918 Kirkland Lake Gold Mining Company Limited (controlled by Beaver Consolidated Mines Limited) deepened No. 1 shaft to 700 feet and sank another shaft (No. 2 main shaft) to 500 feet with levels at 300, 400 and 500 feet. A 150-ton mill was installed and production began in 1918.

In the early years of the mine, most gold production came from workings on the Main Break. In 1937 significant production started from the No.5 vein. The No.5 vein was a 50° south dipping hangingwall vein structure which was mined as a continuous sheet of ore from the 3475 foot level to the 3875 foot level along a strike length of 1,200 feet. This vein rolls into the Main Break along a line plunging to the west at 17°. The vein is sub-parallel to and in the hangingwall of the No.6 break.

Another major source of ore from the mine came from a series of veins that were mined from the 3750 foot level to the bottom 5975 foot level between the Main Break and the No.6 fault. The No.6 fault branches from the Main Break below the 3375 foot level at the eastern boundary of the mine dipping 40-60° south and plunges to the west near 20° along the line of intersection with the Main Break. The veins associated with this structure formed a zone up to 250 feet wide and up to 1,500 feet along strike, which was nearly vertical and plunged gently to the west. Locally, up to seven sub-parallel veins were mined in places “across the width of the zone” (Charlewood, 1964).

Another source of ore was obtained from a series of veins related to an antiformal structure between the 3750 foot level to below the 5725 foot level where it plunged west into Macassa. The No.10 vein was the most prolific of these veins being mined from the 5230 foot level to below the 5600 foot level. The axis of the folded vein strikes near 125° and plunges to the west near 30°. Various veins have been mined on both the south and north limbs of the antiform with one vein mined around the nose of the antiform. The veins are steeper on the limbs and flatter towards the top of the antiform. None of the veins have been reported to intersect the Main Break.

The above summary of the history of the Kirkland Minerals Mine is taken from: STILL, A.C. 2001 Structural setting and controls of gold mineralization at the Macassa Mine, Kirkland Lake, Ontario. Unpublished Masters of Science Thesis, Queens University 151p

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Kirkland Lake Gold Mine (Past Producer)

MAIN METALS:

Au, Ag

LOCATION:

Approximately  1  mile  west  of  Kirkland Lake,  in  central  Teck  Township.  Patented  claims L1236,  L1643, L1850,  L2604,  L2644, and  L2771. Main  shaft  in  patented  claim  L1236.  Latitude 48.150 ,  Longitude 80.060 . Map reference: ODM 1945-1, Township of Teck.

GEOLOGY:

Timiskaming conglomerate, greywacke, and tuff are  intruded by augite syenite, syenite, syenite porphyry, and quartz-feldspar porphyry of Algoman age,  and  by  younger  diabase.  Ore  is  found  in  all formations except the diabase. On surface, the Kirkland Lake “Main Break” follows the north contact of a sill-like mass of augite syenite which  is  bordered to the north and south by bould er  conglomerate  and  tuff  respectively.  The  augite syenite  body widens  somewhat with  depth.  In  the upper part of the mine, it is intruded by a westward- pitching irregular pipe-like body of red syenite which outcrops  on  the Teck-Hughes property, crosses the Kirkland  Lake  Gold  property  and  continues  into the  Macassa  property  at depth. This pitching body of  syenite  has  been  sliced  in  two  along  its  long dimension  by  the  “Main  Break”,  the  southern  or hanging wall  part having been thrust upward rough ly 1,500 feet. Syenite  porphyry  intrudes  both  the  syenite  and augite  syenite  and  increases in amount with depth. In  the  lower  part of the mine, conglomerate, grey wacke,  and  tuff  occur  in  a  pitching  anticlinal structure,  the  core  of  which  consists  of  syenite porphyry and quartz-feldspar porphyry. The  most  important  structure  on  the  property  is the  Kirkland  Lake  vein-fault  or  “Main  Break”. This  fault  crosses  the  entire  property  and  has  an average  dip  of  750S  from  surface  to  the  bottom of the workings.  In the upper half of the mine, the productive  veins  were  found  chiefly  within  the zone  of fracturing  in  the  two  faulted  parts  of the syenite body. Below  the  3,400-foot  level,  the  veins  occur  in  a different  environment. The No.6 “Break” branches from the main fault with  a flatter dip, thus forming a  split  structure  straddling  the  pitching  anticlinal structure.  Productive  veins  occurred  in  the  folded tuff  and  sediments  of  this  structure,  and  in  the wedge-shaped  block  above  which  is  bounded  by the  main fault and  the  No.6  “Break”. The vein  in the latter was not very productive; however, the No. 5 Vein, lying above the No.6 “Break” and more or less parallel to it, was an important source of ore. There  is little post-ore faulting in the upper part of the  mine.  At depth,  some  of the  veins  have  been displaced a small amount.

OWNERSHIP:  Lamaque  Mining  Company  Limited (wholly  owned  subsidiary  of  Teck  Corporation Limited).

HISTORY:

1911:  Claim  L1236  (what was to  become the shaft claim) staked by C.A. McKane.
1912: Main break discovered on the claim. 1913:  Two-compartment shaft (to become Kirkland Lake Gold No.1) to 80 feet by Kirkland Gold Mines Limited.
1915:  No.1  Shaft  deepened  to  200 feet  and  level established at 175 feet by Beaver Consolidated Mines Limited  (under  option  from  Kirkland  Lake  Gold Mines Limited). 1916-1918:  No.1 Shaft deepened to 700 feet, three- compartment  No.2  (Main)  Shaft  to  500  feet with levels at 300, 400 and 500 feet (which are connect ed  with  No.1  Shaft),  and  at  least  6,000  feet  of underground  development.  150-ton  mill  installed and  production  begun  in  1918. Work  by  Kirkland Lake Gold Mining Company Limited (controlled by Beaver Consolidated Mines Limited). 1919-1960:  No.1  Shaft,  which  eventually  became inactive,  reached  a  final  depth  of 894 feet.  No.2 (Main)  Shaft  reached  a  final  depth  of 2,666  feet. Five  winzes:  No.1  from  2,475-foot  level  to  5,897 feet, No.2 from 4,900-foot level to 5,897 feet, No.3 from  3,600-foot  level  to 4,487 feet, “1,000” from 1,000-foot level to  1,134 feet and No.4 from 4,750 foot level to 6,003 feet. Underground development on  61  levels  totalled  113,730  feet  of  drifting, 39,752  feet  of  crosscutting  and  26,065  feet  of raising.  Except  for  1925  when  the  property  was optioned  to  Anglo-French  Exploration  Company Limited,  the  mine  was  in  continuous  production from  1919  until  September  1960.  Production reached  a  peak  in  1940 with  137,986  tons of ore being  processed.  All  work  by  Kirkland  Lake  Gold Mining  Company  Limited  (name  changed  to  Kirk land Minerals Corporation Limited in 1956).

PRODUCTION:

Year Gold Silver Ore Milled Recovered Grade
(ounces) (ounces) (tons) (ounce of Au per ton)
1916-1960 1,172,955 130,579 3,141,051 0.37

REFERENCES:

CIMM  1948, Structural Geology of Ca- 175 Canadian Ore Deposits, Vol.1, p.644-653.
ODM 1920, Vol.29, pt.4, p.26-29.
ODM 1923, Vol.32, pt.4, p.29-31.
ODM 1928, Vol.37, pt.2, p.93-98.
ODM 1948, Vol.57, pt.5, p.133-140.
ODM  1961,  Vol.70,  p.37-39  (Kirkland  Minerals Corporation Limited).
ODM  1964,  GC11,  p.25-29  (Kirkland  Minerals Corporation Limited).
ODM 1964, MRC3, p.42, 43.

Gordon, J.B., Lovell, H.L., de Grijs, Jan, and Davie, R.F.
1979:  Gold  Deposits of Ontario,  Part  2:  Part of District of Cochrane,  Districts of Muskoka,  Nipissing,  Parry  Sound,  Sudbury,  Timiskaming,  and  Counties  of Southern  Ontario;  Ontario  Geological  Survey,  Mineral  Deposits  Circular  18,  253p.

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