Young – Davidson

Location: Powell Township
Years of Operation: 1934 – 1957
Tons Milled: 6,218,272
Ounces olf Gold Produced: 585,690





Young-Davidson Mine (Past Producer)



Approximately  2  miles west-northwest of Matachewan,  ^ mile  southwest of Otisse  Lake,  in southeastern  Powell  Township.  Shaft  in  claim MR5372. Open pit in claims MR5372 and MR5374. Latitude 47.950 ,  Longitude 80.690 . Map reference:  ODM 2110, Powell and Cairo Townships.


The  ore occurs in  a  stock  (actually  several parallel  east-trending dikes which  branch  in  places) of syenite  porphyry which  lies  along  the southern contact of the southern belt of Timiskaming meta-sediments  with  Keewatin  metavolcanics.  About 300  feet  south  of the  open  pit  and  shaft,  Cobalt Group  sedimentary  rocks  overlie  all  other formations. The  main  orebody  is  a  tapering  cone  extending downward  in  the  syenite  porphyry  beneath  the open  pit.  The  syenite  porphyry  consists  of  two main  phases:  the  brown  syenite  porphyry  which is  the  older of the  two and  the  brick  red  syenite porphyry which  hosts  the  ore and  is  intrusive into the brown variety.


The  ore-bearing  syenite porphyry contains 2 percent disseminated pyrite which carries 30 to 50 percent of the gold as fine included grains.  Superimposed  on  this  mineralization  are near-microscopic  fractures  containing  visible  gold. The  disseminated  pyrite  containing  these  fractures is ore if it averages more than 0.11 ounce of Au per ton.  These  features suggest that the orebody was a porphyry gold deposit.

OWNERSHIP: Young-Davidson Mines Limited.


1916:  Discovery of gold on  Davidson Creek by Jake Davidson.
1923-1925: Shaft to 200 feet,  1,747 feet of lateral development, and 6,659 feet of diamond-drilling by The  Porcupine  Goldfields  Development  and  Finance Company Limited.
1933-1956:  600-ton mill erected  in  1933 and open pit  operations  begun  in  1934.  On  completion  of mining in the open pit (from surface to the 865-foot level),  shaft  sunk  to  1,075 feet,  winze  sunk  from 463-foot  level  to depth  of  1,530 feet and  26,202 feet  of  underground  development  carried  out  on seven  levels.  Work  by  Hollinger Consolidated  Gold Mines  Limited  under  an  option  agreement  with Young-Davidson Mines Limited.
1964:  One diamond-drill hole  (607 feet) by Young-Davidson Mines Limited.


Year Gold Silver Ore Milled Recovered Grade
 (ounces) (ounces)  (tons)  (ounce of Au per ton)
1934-1957 585,690 131,939 6,128,272  0.10


CIMM  1948,  Structural  Geology  of Canadian Ore Deposits, Vol.1, p.635.
ODM 1935, Vol.44, pt.2, p.31-36.
ODM 1967, GR51,p.39-43.
Resident  Geologist’s  Files,  Ontario Ministry of Natural 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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