INVENTORY FILE NO.
NAME OF PROPERTY
Dickstone Mine (Roe 1)
1975 - Dickstone Copper Mines Ltd.
306 Hamilton Bldg.,
The deposit lies in a heavily sheared zone that cuts fine-grained
silicified andesite of the Amisk group. Massive diorite has intruded the
andesite 100 feet to the west of the deposit.
Two elongate lenses, separated
by about 1,400 feet, form the deposit in the subsurface. The first lens (R.O.E.
1) has a length of about 770 feet at surface but this narrows to 535 feet at a
depth of 300 feet. Its width is 9.5 feet (Harrison, 1949, p. 55). In 1974 ore
has been found below the 1,150 foot level.
The ore is chiefly massive and
coarse grained in character. Pyrite is the chief sulphide and occurs in streaks,
often with chalcopyrite. Pyrrhotite is intergrown with some of the vein
MINERALS OR PRODUCTS OF VALUE
gold, silver, zinc
EXPLORATION AND DEVELOPMENT
The deposit lies about 1/4 mile north of Beavertail Lake and about 1
3/4 miles south of Norris Lake.
Previous to 1935 the ground was staked as
Copper 1 (203270), however the claim histories cannot be located.
R.O.E. 1 (P2507) was recorded in the name of Marie Erickson. Diamond drilling
(25 holes) and surface work directed by Sherritt Gordon in 1936 indicated a lens
containing approximately 200,000 tons to a depth of 350 feet, averaging 3.13%
copper. The lens appeared to pinch out at depth. Drilling elsewhere on the
property failed to locate anything of value.
All interests passed to
Dickstone Copper Mines Limited, in 1937. Diamond drilling was registered on
February 2, 1939. The property was leased (M-1091) on June 22, 1939. The lease
was renewed for 21 years on June 22, 1960.
Hudson Bay Mining and Smelting
Company, Ltd. entered an option agreement with Dickstone Copper Mines in 1965. A
total of 10,000 feet of diamond drilling was carried out.
exercised their option and an agreement was reached whereby Hudson Bay would
finance and mine the property, with Dickstone receiving 25% of the net
In 1967 the #1 shaft (on R.O.E. #1) was collared to the 48-foot
level. Ore reserves were estimated to be 346,000 tons, grading 2.96% Cu and
0.10% Zn in the No. 1 orebody and 229,000 tons grading 1.87% Cu and 3.20% Zn in
the No. 2 orebody. Total reserves were 575,000 tons averaging 2.53% Cu (N.
Miner, August 15, 1968).
By the end of 1969 the No. 1 shaft was completed to
a depth of 1,342 feet and the No. 2 shaft (located on R.O.E. #2) was started and
sunk to 997 feet.
Production started on November 2, 1970 at a rate of 600
tons per day.
Reserves at December 31, 1973 were 519,300 tons averaging 2.82%
copper, 2.8% zinc, 0.009 oz. gold and 0.3 oz. silver per ton (Can. Mines
Handbook, 1974-75, p. 110).
The property was brought into production on November 2, 1970.
Production statistics since that time have been:
Year Au Ag Cu Zn
1970 0.02 0.4 2.1 3.7 26,100
1971 0.02 0.4 2.0 4.8
1972 0.01 0.4 2.5 3.3 258,600
1973 0.02 0.3 2.6 2.7
1974 0.02 0.3 2.7 2.0 132,000
Ann, Rept.; Hudson Bay Mining and Smelting Co., Limited, 42nd -
Dickstone Copper Mines Limited; SW16, 63K; Corporation Files, Man.
Dickstone Mines (R.O.E. #1), File 20950; Mining Recording Files; Man.
Harrison, J.M., (1949): Geology and Mineral Deposits of File-Tramping
Lakes Area, Manitoba, Geol. Surv. Can., Memoir 250, p. 54-5.
Map 63K/16W, File Lake (Topo.), 1:50 000; Surveys and Mapping Br.,
Map 8455G; File Lake (Aeromag.), 1:63 360; Man. Mines Branch and
Geological Survey of Canada.
#Map 929A, File Lake (Geol.), 1:63 360-Accomp.
Publ. by Harrison (1949); Geol. Surv. Can.
Map 71-1, Preliminary Compilation
Snow Lake-Flin Flon Sherridon Area (Geol.), 1:63 360-Accomp. Publ. by Bailes
Map, Geology of Snow Lake-Flin Flon Sherridon Area (Geol.) - Accomp.
Int. Geol. Cong., Guide Book A31-C31, 1972.
#Maps, SW16/63K (Claim), 1:31
680; "Circa 1975" Claim Map Series, Mining Recording, Man. MRD.
The deposit occurs along a magnetic "high".
Rev. by R.M.