Laguerre

Location: McVittie Township
Years of Production: 1937 – 1939
Tons Milled: 40,514
Ounces of Gold Produced: 7,568

 

 

 

 

 

 

Laguerre Mine (Past Producer)

MAIN METALS:

Au, Ag

LOCATION:

Approximately  Vz  mile  east  of  Larder Lake  village,  astride  the  McVittie-Hearst  town ship  boundary  near  the  2Vz  mile  post,  in northern Hearst  Township  and  southern  Mcvittie  Town ship.  Laguerre  Shaft  in  patented  claim  L1053; Raven  River Shaft in claim L5360. Latitude 48.100, Longitude 79.700 . Map  reference:  ODM  1947-1, Township of  Hearst and portion of Township of McFadden.

GEOLOGY:

Keewatin  metavolcanics and  Timiskaming metasediments  (conglomerate,  tuff,  and  highly schistose  rocks)  are  intersected  by numerous dikes and  irregularly  shaped  Algoman  intrusive  bodies, mainly  syenite,  felsite,  diorite,  and  lamprophyre. The  Laguerre  Shaft  was  sunk  on  the  north  exten sion  of  the  No.2  vein  zone  which  lies within  the boundaries  of  a  pink  syenite  dike.  The  dike  has been  traced  for  more  than  V*  mile  and  varies  in width from 3 to 75 feet. Gold values occur through out  the  dike  on  the  250-foot  level  where  it  has been  fractured,  pyritized,  and  cut  by  quartz stringers. No ore shoot was outlined. In  the  Raven  River  Mine  two  pipe-like  bodies of greatly  altered  syenite  are  bordered  by  green  carbonate,  talc-chlorite,  ‘greenstone’,  and  lampro phyre.  The  ore  occurs  in  quartz  veins  in  these syenite bodies.

ECONOMIC  FEATURES:

In  1939,  the  estimated  re serves  in  the  ore  zone  were  11,000,000 tons averaging  0.05  ounce  of  Au  per  ton.  These  features suggest  that  the  deposit  belongs  to  the  gold-porphyry type.

OWNERSHIP:

Open for  staking  as  of July  15,  1971.

History:

1908:  10-ton  stamp  mill  on  Harris-Maxwell claims.
1912-1913:  Shaft to 438  feet, with  3,000  feet of lateral development on five levels. Small amount of ore  milled.  Work  by Associated  Goldfields  Mining Company Limited.
1936-1939: Shaft dewatered, winze sunk from 420 to  716  feet, two  new  levels,  8,000 feet of lateral development,  and an unspecified amount of under ground diamond-drilling. Gold production from 50- to 70-ton mill. All work by Raven River Gold Mines Limited.
1939-1941:  Laguerre  Shaft  to  281  feet  on  the Knutson  claim,  with  lateral  development  on  the 250-foot level.
1946-1947:  Laguerre  Shaft  dewatered and deepen ed to 778 feet, with levels at 420, 590 and 760 feet, and  2,443 feet of lateral development. Surface and underground  diamond-drilling.  All  work  by  La guerre Gold Mines Limited.
1970:  Trenching  and  two  diamond-drill  holes (830 feet) by R.A. MacGregor.
1973:  Magnetic  and  electromagnetic  surveys  by R.A. MacGregor.

PRODUCTION:

 

Years Gold Silver Ore milled Recovered Grade
 (ounces) (ounces) (tons) (ounce of Au per ton)
1937-1939  7,568 1,383 40,514 0.19

REFERENCES:

ODM 1941, Vol.50, pt.7, p.76-80.
ODM 1947, Vol.56, pt.8, p.25, 26.
ODM 1964, MRC3, p.45, 46.
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.

 

 

 

 

 

Leave a Reply

Your email address will not be published. Required fields are marked *