Sylvanite

Location: Teck Township
Years of Operation: 1927 – 1961
Tons Milled:  5,049,536
Ounces of Gold Produced: 1,674,808

 

 

 

 

Sylvanite MineCopyright: G. Hamden

Sylvanite Mine
Copyright: G. Hamden

 

Sylvanite Mine (Past Producer)

MAIN METALS:

Au, Ag

LOCATION:

Immediately  north  of the  town  of  Kirk land  Lake,  in  eastern Teck Township. No.2  (Main) Shaft  in  patented  claim  L2100;  No.4  Shaft  in patented  claim  L2101  (claim  L11398  on  ODM Map  1945-1).  Latitude  48.150 ,  Longitude  80.020 . 178 Map reference: ODM 1945-1, Township of Teck.

GEOLOGY:

The southern part of the property is under lain by part of the main Algoman syenite porphyry stock in the Kirkland Lake camp. Flanking the main intrusive body to the north is a complex mixture of Timiskaming metasediments  (mainly greywacke and conglomerate)  and  intrusive  rocks.  These  northern intrusions consist of augite syenite and syenite por phyry,  both  of which  form  dikes  trending  N200 E or  approximately  parallel  to  the  long  axis of the main porphyry stock. The strongest and most persistent break in the mine is  the  zone of maximum displacement of the Kirk land  Lake  Fault which occurs near the south side of a  1,500-foot wide zone of pre-ore faulting and frac turing. Most of the fractures dip south, some steeply and  others  at flatter  angles.  Veins  are found in all rock  formations  within  the  fractured  zone  and pass  from  one  rock type into another without any apparent  change  in  strength.  The  ore  shoots  were not  continuous  over  great  distances,  but  were  a series  of bodies having  irregular outlines. The Kirk land  Lake Fault dips south  in the upper part of the mine but swings through the vertical and continues with a northerly dip below the 3,000-foot level. The rocks on the south side of the fault have been thrust upwards with respect to those on the north side. Several  post-ore strike faults in the mine dip to the north. The general direction of movement along this set  of faults  is north side up. Crossfaults, the most important of which  are the  K and Sylvanite Faults, displace the strike faults.

OWNERSHIP:

J.H. Botsford.

Sylvanite Gold MineEddie Duke Photo

Sylvanite Gold Mine
Eddie Duke Photo

HISTORY:

Pre-1913:  Considerable work on the Wright and  Robbins  claims  without  any  very  encouraging results.
1913-1914:  Trenching and two prospect shafts (40 and 50 feet) by Sylvanite Gold Mines Limited.
1916-1917:  Shaft  (possibly  Sylvanite  No.2)  is  120 feet and 169 feet of lateral development on the 100- foot level by Sylvanite Gold Mines Limited. 1922-1927:  No.2 Shaft to  1,526 feet,  No.3 Shaft to  118 feet,  29,025 feet of underground  develop ment  on  levels  at  129,  260,  393,  500,  750,  875, 1,000,  1,250,  1,375  and  1,500  feet,  and  at  least 9,000  feet  of  diamond-drilling.  200-ton  mill  put into operation in May  1927. All work by Sylvanite Gold Mines Limited.
1928-1961:  The  mine  was  serviced  by four  shafts (the  Nos.1  and  3  Shafts  were  inactive  when  the mine  closed),  and  by  a  winze from the 3,150-foot level  which  took  the  works  to  a  depth  of 5,550 feet.  Underground  development  was  carried  out on 41  levels and, during the life of the mine, totalled:  233,104  feet  of  drifting,  70,648 feet of crosscutting, and 74,718 feet of raising. Production was  continuous  from  1927  until  the  mill  closed down  in  September  1961.  During  the  last  IV* months  of  operation,  the  mill  handled  an  average of 446  tons of ore  per day,  compared  to  a  maxi mum of 600 tons per day in 1940. 1964: All  interests sold, assets distributed to share holders, and charter surrendered.

PRODUCTION:

Year Gold Silver Ore Milled Recovered Grade
(ounces) (ounces) (tons) (ounce of Au per ton)
1927-1961 1,667,520 337,956 5,049,536 0.33

REFERENCES:

Canadian Mines Handbook 1961, p.234.
CIMM  1948,  Structural  Geology of Canadian  Ore Deposits, Vol.1, p.644-653.
ODM 1928, Vol.37, pt.2, p.134-140.
ODM 1948, Vol.57, pt.5, p.177-183.
ODM 1963, Vol.71, p.62-64.
ODM 1964, MRC3, p.65, 66.
Resident  Geologist’s  Files,  Ontario Ministry of Na tural Resources, Kirkland Lake.

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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