MINERAL
INVENTORY FILE NO.
662
______________________________________________________________________________________________________
PRODUCT
Copper
NTS AREA
63K/12 NW
REF.
CU 6
______________________________________________________________________________________________________
NAME OF PROPERTY
Mandy Mine (Mandy 50)
OWNER OF
OPERATOR ADDRESS
1978 - Hudson Bay Mining and Smelting Co., Limited
Flin Flon,
Manitoba
R8A 1N9
OBJECT LOCATED
Shaft
MINING
DIVISION
The Pas
Latitude
54° 43.6'
Longitude
101° 49.9'
Uncertainty
(m)
50
UTM Zone
_____
Easting
_______
Northing
_______
L.S./Quarter
Section
___
Section
___
Township
66
Range
29 WPM
DESCRIPTION OF
DEPOSIT
The Mandy deposit was in a shear zone in Precambrian volcanic breccia
(Fig. 20). It was situated in the same synclinal fold as the Flin Flon mine
(63K/13 SW; CU3), but on the opposite and overturned limb. The strike and dip of
the ore was parallel to the enclosing formations, and the plunge was steeply
south. The ore replaced a tight draft-fold in the sheared rocks which acted as
an incompetent member lying between more competent rocks. The chief minerals
were pyrite, sphalerite, chalcopyrite, and minor amounts of galena and
arsenopyrite.
The orebody was 100 feet long, 12 feet wide, and tapered
downwards to a depth of 200 feet. The orebody exhibited zoning. Surrounding the
central chalcopyrite-rich part of the deposit was a zone mixed and banded
sulphides in which sphalerite predominated and this in turn was surrounded by a
zone in which pyrite was the abundant sulphide (Davies et al., 1962).
ASSOCIATED
MINERALS OR PRODUCTS OF VALUE
Gold, Silver, Zinc
HISTORY OF
EXPLORATION AND DEVELOPMENT
The deposit is located on a peninsula in the northwest arm of Schist
Lake, about 6 km southeast of Flin Flon.
In 1914, a yellow-red stain was
noticed in the vicinity of the deposit by Spurr (1926), but it was not staked
until 1915, when F.C. Jackson discovered massive chalcopyrite and sphalerite in
a thick lens at surface. The claims were optioned to the Tonopah Mining Company
of Nevada (Bruce, 1918) which incorporated the Tonopah Canadian Mines Company in
1916 to conduct diamond drilling on the property. Surface assays were reported
from the chalcopyrite bands and sphalerite bands from the middle of the ore zone
by Bruce (1917):
Band...................Au oz/ton........Ag
oz/ton.........Cu%...........Zn%
Chalcopyrite......0.04...................0.12....................28.96..........-
Sphalerite...........Tr......................1.52....................-.................46.60
By
mid-summer of 1916 the ore body was blocked out, the drilling showed 25,000
tones of massive chalcopyrite averaging about 20% Cu with $5.00/ton combined Au
and Ag (Northern Miner, 28 02 04).
Following the results of the diamond
drilling, the property was assigned to Mandy Mining Company which started mining
from an open pit in December, 1916. The ore was hauled approximately 64 km to
Sturgeon Landing on the Saskatchewan River, then barged 209 km by Ross
Navigation Company to The Pas, and finally transported 1,931 km by rail to
Trail, B.C.
During the winter, 1917-18, a shaft was completed to 100 ft.
level and stoping began. The ore was now barged down Schist Creek and to the
south side of Athapapuskow Lake and then hauled to Sturgeon Landing.
In
1918-19, the shaft was sunk to the 200 ft. level. The ore was again hauled to
Sturgeon Landing, but now the ore was barged to The Pas by the Mandy Mining
Corporation. The mine operated until March, 1919; however, the last shipment was
made in August, 1920. Total production during the 2 1/2 years operation was
25,231 tons (22,885 tonnes) grading 19.79% Cu, 0.085 oz/ton (2.943 g/tonne) Au
and 2.42 oz/ton (83/15 g/tonne) Ag. Lease 75 was taken out on the property in
1920.
HISTORY OF
PRODUCTION
Year.................Tonnes................................................g/..................g/
Shipped...........of
Ore............% Cu........% Zn.....tonne Au.....tonne
Ag
1917.................3025................16.70...........-............3.471..............77.74
1918.................5355................19.38...........-............3.342..............84.61
1919.................7693................20.75...........-............2.640..............87.26
1920.................6812................20.39...........-............2.740..............79.77
Total..............22885................19.79........................2.943...............83.15
Year................Tonnes................................................g/...................g/
Milled.............of
Ore..............% Cu........% Zn.....tonne Au.....tonne
Ag
1943.................45791..............5.76...........15.50.........3.05.............50.75
1944................56440...............5.52...........12.70.........3.05.............59.33
Total.............102231..............5.63............13.95.........3.05.............55.49
REFERENCES
Alcock, F.J. 1922: Flin Flon Map Area, Manitoba and Saskatchewan;
Geol. Surv. Can., Sum. Rept. 1922, Part C, p. 26-29.
Bailes, A.H. 1971:
Preliminary Compilation of the Geology of the Snow Lake-Flin Flon-Sherridon
Area; Manitoba Mines Branch, Geol. Paper 1/74.
Bruce, E.L., 1918:
Amisk-Athapapuskow Lake District; Geological Survey of Canada, Mem.
105.
Coates, C.J.A., Quirke, T.T., Bell, C.K., Cranstone, D.A., Campbell,
F.H.A., 1972: Geology and Mineral Deposits of the Flin Flon, Lynn Lake and
Thompson Area, Manitoba and the Churchill-Superior Front of the Western
Precambrian shield, 24th Int. Geol. Cong.
Davies, F.J., Bannatyne, B.B.,
Barry, G.S., and McCabe, H.R. 1962: Geology and Mineral Resources of Manitoba;
Man. Mines Branch, p. 73-4.
Douglas, R.W.J., 1970: Geology and Economic
Minerals of Canada; Geological Survey of Canada, Econom. Geol. Rept. p.
190.
Gale, G., Koo, J., Solkoski, L and Southard, G., 1976: Evaluation of
Massive Sulphide Environments, in: NREP 1st Ann. Rept., Man. MRD., Open File,
Rept. 77/1, p. 34-36.
Hanson, G., 1920: Some Canadian Occurrences of Pyritic
Deposits in Metamorphic Rocks; Econ. Geol. Vol. 15, p. 574-609.
+Howkins,
J.B. and Martin, P.L., 1970: A Comparison Between the Flin Flon and Snow Lake
Orebodies of Hudson Bay Mining and Smelting Co., Limited; CIMM, Ann. Meeting,
Unpubl. Rept.
Hudson Bay Mining and Smelting Co., Limited, NW 12, 63K;
Corporation Files, Man. MRD.
Sabina, A.P., 1972: Rocks and Minerals for the
Collector, La Ronge-Creighton, Saskatchewan; Flin Flon-Thompson.
Sangster,
D.F., 1972: Isotopic Studies of Ore Leads in the Hanson Lake-Flin Flon-Snow Lake
Mineral Belt; Can. Jour. of Earth Sci. v. 9, p. 500-13.
Sangston, D.F., 1972:
Precambrian Volcanogenic Massive Deposits in Canada: A Review; Geological Survey
of Canada, Paper 72-22, p. 7.
Wright, J.F., 1931: Geology and Mineral
Deposits at a Part of Northwest Manitoba; Geological Survey of Canada, Summ.
Rept. 1930, Part C, p. 57-58.
MAP REFERENCES
Map 63K/12W, Schist Lake (Topo.), 1:50 000; Surveys and Mapping,
Branch, Ottawa.
Map 2453G, Athapapuskow Lake (Aeromag.), 1:63 360; Manitoba
Mines Branch and Geological Survey of Canada.
Map 71/1, Geological
Compilation of the Snow Lake-Flin Flon-Sherridon Area (Geol.), 1:253 440 -
Accomp. Paper by Bailes (1971); Manitoba Mines Branch.
*Map 1078A, Flin
Flon-Mandy (Geol.), 1:1 200 - Accomp. Marginal Notes by Stockwell (1960);
Geological Survey of Canada.
Map 633A, Schist Lake (Geol.), 1:63 360 - Accom.
Marginal notes by Tanton (1941); Geological Survey of Canada.
Maps, NW 12,
63K (Claim), 1:316 380 "Circa 1978" Claim Map Series Mining Recording, Man.
MRD.
URL
N/A
REMARKS
N/A
NOTES
N/A
Compiled/Revised
by:
RM JDB
Date
6-75 1-78
