INVENTORY FILE NO.
NAME OF PROPERTY
Rod Mine (Little Stall Lake)
2000 Stall Lake Mines Ltd.
22nd Floor, 333 Main St
No. 1 Shaft
Chalcopyrite, sphalerite, gold (Au), and galena occur with carbonate,
quartz, and sulphide gangue minerals in two ore zones in Archean quartz
porphyry. The zones lie east of the northeast offset (the Miller Lake syncline)
of the Threehouse syncline, on the north branch of the Berry Creek
Both zones plunge about 30°N at N28°E. They strike northeast and dip
50°-60°NW. The plan length of the No. 1 zone was less than 122 m (400 ft), but
it lengthens with depth along plunge. It was 0.6 to 7.6-m (2 to 25 ft) thick and
died out between 61 and 91 m (200 and 300 ft) below surface.
The No. 2 zone
is 671 m (2200 ft) long along plunge, with an economic length of 594 m (1950
ft). Its true width is up to 91 m (300 ft) and its true thickness is 6 m (20
Both orebodies are zoned, having high-grade central cores and rims of
barren pyrrhotite. Chalcopyrite sometimes contains inclusions of sphalerite and
other sulphides. Sphalerite may contain exolved chalcopyrite. Au and silver (Ag)
quantities increase with increasing amounts of sulphides. Cobalt (Co), noted in
the No. 2 zone is associated with arsenopyrite and pyrite.
MINERALS OR PRODUCTS OF VALUE
Gold, zinc (Zn), silver, cobalt, and lead (Pb).
EXPLORATION AND DEVELOPMENT
The deposit is located along the east side of Miller (Stall) Lake. The
CN railway and Provincial Road 393 are within 0.5 km of the property.
was staked in the late 1920's, but nothing further is known about this
claim.W.E. English staked T.E. 1, 4 and 5 (P6293, P6294, and P6296) in 1942.
Surface work was done before their cancellation in 1948. Joe 1 and 4 (P 19593
and P19596) were staked by W. Johnson in 1948, but cancelled the following
Rod 4 and 5 (P23831 and P23832) were staked by Pete Stewart in 1951, to
cover a Cu-Au showing. The claims were immediately assigned to Kay Lake Mines
Limited. A magnetometer survey was made in 1952, and other Rod claims were
trenched in 1953.
Hudson Bay Exploration and Development Company Limited
(H.B.E.D.) optioned the property in 1955. H.B.E.D. made a Boliden hoop
electromagnetic survey along a 48-km (30-mile) base line, including this area. A
strong, short conductor and many smaller ones were found in the property. The
diamond drilling of the strong anomaly averaged 3.88% Cu and 1.50% Zn over 4.7 m
(15.5 ft) in one hole. Other holes drilled nearby returned a maximum of 5.12% Cu
and 1.17% Zn. The drilling indicated the economic zone to be less than 61 m (200
ft) long along strike. Further drilling, to check the zone, totalled 7528 m (24
698 ft) in 36 holes, but did not find any more extensive economic
mineralization. The zone had been drilled for 488 m (1600 ft) of strike along
plunge. A horizontal loop electromagnetic survey was done by H.B.E.D. in
1956-1957 (Non-confidential Assessment File No. 90119). The option was dropped
in 1958. Most of the economic mineralization was located beneath Rod 5.
1959, the claims in this area were assigned to Stall Lake Mining Syndicate,
which was formed about this time. Shortly afterward, the syndicate became Stall
Lake Mines Limited, and the claims were transferred to the new company. Stall
Lake drilled to check the main H.B.E.D. discovery hole, the second Stall Lake
hole cut ore-grade mineralization. G.A. Russell directed the step-out drilling
on 15-m (50-ft) centres which totalled 5212 m (17 099 ft) in 55 holes. The
drilling defined an orebody 18 to 61 m (60 to 200 ft) deep, although later
reports (Northern Miner, April 4, 1964) indicate that up to 8% Cu was found
between 122 and 152 m (400 and 500 ft). The "No. 1" or "A" ore zone was
estimated to contain approximately 30 000 tonnes (t) (33 000 tons) grading 5%
Cu, 4-5% Zn, 2.74 grams/tonne (g/t) (0.08 oz/ton) Au, and 34.29 g/t (1.0 oz/ton)
Ag (Coats et al., 1970, and G.A. Russell, Personal Communication, August 11,
1976). A Turam survey was made in 1960. Rod 4 and 5 were leased in 1960 as
M-5821, M-5822, respectively. A power line to the property was completed in
As shaft sinking began, surface drilling indicated 27 000 t (30 000
tons) grading 5.62% Cu and 3.58% Zn. Higher grade ore was found during
underground development. Drilling showed the ore to extend between the 61 and 91
m (200-ft and 300-ft) levels. The shaft was bottomed at the 61 m level, where
most of the work was done. A 15 m (50-ft) raise was driven above the 61 m level.
Surface drilling had indicated 844 t (930 tons) of ore on the 61 m level. By
January 31, 1962, over 2180 t (2400 tons) had been mined on that level, with
44.5 m (146 ft) of ore yet to be developed. Width of the ore zone was also
greater than was expected. Samples were taken by Mines Branch personnel, and
were assayed by the Mines Branch laboratory. Two grab samples yielded 1.03 g/t
(0.03 oz/ton) Au, 19.02% Cu and 2.06 g/tonne (0.06 oz/ton) Au, 13.40% Cu; one
sample from the face of a crosscut contained a trace of Au and 0.32% Cu.
1962, 1856 t (2045 tons), averaging 5.9% Cu, 4.8% Zn, 2.74 g/t (0.08 oz/ton) Au,
and 29.14 g/t (0.85 oz/ton) Ag were shipped to Hudson Bay Mining and Smelting
Co., Limited (H.B.M. & S.) in Flin Flon. The ore was trucked to the H.B.M.
& S. from Stall Lake mine and transported to Flin Flon by train (Northern
Miner, January 31, 1963).
During the first three months of 1963, a total of
4540 t (5000 tons) of ore was shipped. Mining progressed at about 136 t/day(150
tons per day) averaging 7% Cu, 4% Zn, with 2.74 g/t (0.08 oz/ton) Au, and 29.14
g/t (0.85 oz/ton) Ag. Approximately 3180 t (3500 tons) were shipped in April and
May. The average mining grade was 6.1% Cu, 3.7% Zn. A raise or escapeway was
completed to surface from the 61 m level. Deepening of the shaft began in June
and in August, 1815 t (2000 tons) were shipped. Four stopes were being mined,
west of the shaft on the 30 and 61 m (100 and 200 ft) levels, and on the 70 m
(230-ft) level east of the shaft. In September, the shaft was completed to about
99 m (325 ft) with the bottom level at 91 m (300 ft). The 70 m (230-ft) sublevel
was being driven toward the area where surface drilling had indicated that the
ore zone had been removed by faulting. September shipments averaged 6% Cu, 3.80%
Zn, 2.74 g/t (0.08 oz/ton) Au and 25.71 g/t (0.75 oz/ton) Ag (for total
production see History of Production).
The No. 1 or A zone was mined out in
1964 and all mining ceased in April 1964. Legal problems developed between Stall
Lake Mines Limited and its managing company, Stallore Ltd., when the former
wanted to terminate its agreement with the latter. Legal action was also brought
by shareholders of Stall Lake Mines, against the company.
Mines Limited made an agreement with Stall Lake Mines in 1965, in return for
work done on the claims, Falconbridge was to earn an interest in the property.
If production was warranted as a result of the exploration by Falconbridge, a
new company would be formed to do the mining. The new company would be
controlled jointly by Falconbridge and Stall Lake Mines. The CN railway was
extended across the property in 1965.
By the end of September, Falconbridge
had completed geological, geochemical, magnetic and AFMAG surveys. Underground
mapping was also done in the old shaft. The first five diamond drill holes, all
vertical, cut relatively low sulphide values. One hole assayed 0.70% Cu, 2.75%
Zn, 13.37 g/t (0.39 oz/ton) Ag, and 5.49 g/t (0.16 oz/ton) Au, from 109 to 109.8
m (359.0 to 360.2 ft). Another hole, 213 m (700 ft) deep, cut a 3.1 m (10.2 ft)
section, which assayed 1.84% Cu, 1.33% Zn, 8.57 g/t (0.25 oz/ton) Ag and 0.69
g/t (0.02 oz/ton) Au at 133 m (436.5 ft) (Northern Miner, December 16,
At least 9 holes were drilled by Falconbridge, by the end of 1965, to
test the 'A' zone at 152, 305, and 457 m (500, 1000, and 1500 ft) depths along
plunge. The last holes drilled that year, yielded assays of up to 18.7% Cu with
35.66 g/t (1.04 oz/ton) Ag over 0.8 m (2.6 ft) and 14.7% Zn across 0.6 m (1.9
ft). These two intersections were part of a 3.5 m (11.5 ft) section which
averaged 8.51% Cu, 10.01% Zn, 18.86 g/t (0.55 oz/ton) Ag, and 2.39 g/t (0.07
oz/ton) Au below 305 m (1000 ft) (Stall Lake Mines, 1965 Annual Report) and were
the first indication of the No. 2 ore zone. The zone was delineated by drilling
between 1965 and 1968. One hole in 1966 returned 9.1 m (29.9 ft) of 1.85%
Based on economic mining necessities of 2% Cu and a true width of 1.5 m
(5 ft) with 10% dilution, the No. 2 zone was estimated to contain 275 120 t (303
180 tons) of ore grading 5.79% Cu and 2.88% Zn, with recoverable Ag and Au
(Stall Lake Mines, 1966 Annual Report). Drilling, in 1967, recovered the best
ore to that date. One hole cut 14.00% Cu with over 4% Zn across a true width of
4.1 m (13.5 ft), over 366 m (1200 ft) below surface. Another yielded 7.4 m (24.2
ft) grading 11.25% Cu.
In 1968, a diamond drill program was jointly
undertaken by Falconbridge and H.B.M. & S.. The joint deep drilling included
some wedged holes. Good values of base metals, Au and Ag were found. Down plunge
Falconbridge diamond drilled 3 holes which averaged up to 13.70% Cu, 5.17% Zn,
2.39 g/t (0.07 oz/ton) Au and 30.17 g/t (0.88 oz/ton) Ag between 437.8 and 441.7
m (1436.5 and 1449.3 ft). Reported Cu assays ranged from 0.07% to 13.70% in the
1968 drilling (Coats et al., 1970, p. 973). The first assays for Co were made.
One hole averaged 1.72 kg (3.8 lbs) Co over 3.2 m (10.5 ft) and another yielded
1.09 kg (2.4 lbs) across 5.2 m (17 ft). Both Co-bearing intersections were just
below 426 m (1396 ft) (Stall Lake, 1968 Annual Report).
were increased in tonnage to 571 190 t (629 452 tons) grading 4.76% Cu and 2.15%
Zn, allowing for 10% dilution, an economic grade of 1.5% Cu, and a true mining
width of 1.5 m (5 ft) (Stall Lake Mines, 1968 Annual Report). This figure was
revised to 610 382 t (672 641 tons) averaging 5.38% Cu and 2.28% Zn, also
allowing for 10% dilution (Stall Lake Mines, 1969, 1973 Annual Reports; Northern
Miner, August 14, 1969, January 21, 1971, March 8, 1973). The centre of the zone
contained a high grade section which assayed 8.75% Cu, 2.05% Zn, 1.37 g/t (0.04
oz/ton) Au, and 23.99 g/t (0.70 oz/ton) Ag across a true width of 8.2 m (27 ft)
(Northern Miner, August 14, 1969) (See Remarks for other reserve
Falconbridge resumed drilling, in 1969, to test 50 of the 100
anomalies on the property, and to see if the orebody extended up-plunge. Some
chalcopyrite was found in the drilling. Feasibility studies considered bringing
the orebody into production. By 1970 Co assays reached a maximum of 0.35% Co,
but averaged only 0.09% Co (Coats et al., 1970, p. 982). Falconbridge had earned
50% interest in the property by their exploration expenditures.
and access roads were brought in to Rod 4, where the No. 2 zone was located. A
3-compartment shaft was collared to a depth of 15 m (50 ft), but,lans to sink
the shaft 503 m (1650 ft) were never realized. Falconbridge became unwilling to
commit itself to financing further developments. Explored Area Lease No. 31 was
issued, as of January 1975.
To test the down-plunge extension of the ore,
H.B.M. & S. joined Stall Lake and Falconbridge in a joint drilling program
along the property boundary. "A drill hole intersected ore at 1500 ft (457 m )"
(Bell, 1978, p. 72). In 1979, the property, jointly held by Stall Lake and
Falconbridge, was leased for 10 years to H.B.M. & S., which will pay
quarterly "advance royalties of $400 000 annually" until the start of commercial
production; and after production is achieved "quarterly royalty payment equal to
7% of the net value of the minerals recovered". H.B.M. & S. spent $10
million to develop the mine and anticipated production was to commence in the
second half of 1982 (Northern Miner, January 3, 1979).
As of January 1980,
measured and indicated ore reserves were 610 382 t (672 641 tons) grading 5.38%
Cu, 2.28% Zn, 13.71 g/t (0.4 oz/ton) Ag and 0.96 g/t (0.028 oz/ton) Au
(Laughlin, 1980, p. 16).
In 1980, Stall Lake shareholders approved the 10
year lease agreement in which "both Stall Lake and Falconbridge will receive
advance royalties of $100 000 on signing and continue at the rate of $400 000
annually to each partner until production". Initial production, to begin within
three years, was to be 113 400 t (125 000 tons) per year with Falconbridge
monitoring the agreement and passing production information along to Stall Lake
(Northern Miner, March 13, 1980).
As of January 1981, proven ore reserves
were 324 200 t (412 600 tons) grading 7.21% Cu, 3.0% Zn, 18.51 g/t (0.54 oz/ton)
Ag and 1.85 g/t (0.054 oz/ton) Au (Laughlin, 1981, p. 17).
In January 1982,
the shaft reached the 229 metre (750 ft) level with the objective being 686
metres (2250 ft) (Northern Miner, January 21, 1982). The cost of bringing the
mine into production was revised to $15 million, and shaft sinking reached 330
metres (1082 ft) by the end of 1982. Production at 454 t (500 tons) per day was
scheduled to begin in 1983 (Canadian Mines Handbook, 1983/84).
changed its name to Falconbridge Limited in 1982.
As of January 1983, ore
reserves at Rod No. 2 zone were reported as 517 799 t (570 614 tons) grading
6.74% Cu, 3.0% Zn, 18.17 g/t (0.53 oz/ton) Ag, 1.68 g/t (0.049 oz/ton) Au, and
0.185% (estimated) Pb (Laughlin, 1983). Hudson Bay had also constructed the
shaft to a depth of 689 m (2261 ft) (Canadian Mines Handbook,
Initial production began in March 1984, and H.B.M. & S. worked
on six levels in the mine with production from the Rod mine being applied to
reduction of the advanced royalties (Northern Miner, August 30, 1984). Reserves
were estimated at 517 800 t (570 600 tons) averaging 6.74% Cu and 3% Zn
(Canadian Mines Handbook 1984-85). Ore from the mine is treated at the Snow Lake
concentrator (see remarks in Mind 480). As of December 31, 1984 ore reserves at
Rod No. 2 zone were reported as 602 406 t grading 6.13% Cu, 2.9% Zn, 15.8 g/t
Ag, 1.61 g/t Au, and 0.016% (estimated) Pb (Lemieux and Laughlin, 1985).
following measured and indicated reserves were
(tons) Average Grade
Cu (%) Zn
1986 424 000 (467 000) 7.0 3.0
1987 301 860 (332 650) 7.0 3.0
244 860 (269 830) 7.0 3.0
1989 186 000 (205 000) 6.6 3.0
1990 (98 565) 6.6
Source: Canadian Mines Handbook, 1987-88; 1988-89; 1989-90; 1990-91,
The following work was done by the Manitoba Government:
An experimental Aurex-cup mercury gas survey by Fedikow (1986);
2) A humus
geochemical survey by Ferreira and Fedikow (1988), in which 66 humus samples
were collected and a 365 x 240 m multi-element geochemical anomaly was
3) Detailed mapping by Fedikow et al. (1990); and sampling of till
for geochemical analyses by Gobert (1990).
H.B.M. & S. planned to do
some exploration drilling in 1989. Underground drilling tested the area between
the Stall and Rod mines at the 590 m level (Northern Miner Magazine, March
1989). H.B.M. & S. took the option to extend the lease by 5 years, in 1990,
and leased the property until 1995 (Canadian Mines Handbook, 1990-91, p.
In 1991, the mine closed, as the resources were depleted, and no
further work has been done. The lease expired in 1995, and the property reverted
back to Stall Lake Mines Ltd. (50%) and Falconbridge Limited (50%). Stall Lake
sold it’s Manitoba properties, including Rod mine, in 2001, for $74 999 to Aur
Resources (Canadian Mines Handbook, 2001-02). In 2002, Aur plans to do 3000 m of
exploratory diamond drilling on the property.
Year Tonnes (tons) Grade g/tonne Ref.
Milled % Cu % Zn Au
by end 1962 1856 (2045) 5.9 4.8 2.74 29.14
Jan.-Mar. 4540 (5000) 7.0 4.0 2.74 29.14
Apr.-May 3180 (3500 approx.) 6.1 3.7 2.74 29.14 NM630613
1815 (2000) 6.0 3.80 2.74 25.71 NM630912
Total 1963 production: Cu 1 691
075 lbs Au 1086 ozs NM640130
Zn 765 631 lbs Ag 8 058 ozs
mining rate - 90.7 tonnes (100 tons) per day.
Tonnage figures mined,
reported by Esposito (1986), follow for the Rod mine which was still in
production in 1986:
Deposit Year Tonnes Cu (%) Zn (%)
Rod No. 1
1962-64 22 675 5.0 4.5
Rod No. 2 1984 42 621 6.39 2.2
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41507G: Herb Lake; Manitoba Energy and Mines and Geological
Survey of Canada
aeromagnetic Total Field and Vertical Gradient, colour
compilation maps, scale 1:50 000.
Manitoba Mines Branch: 63J/13SW Claim
Map Series, circa 1976, Mining Recording, Manitoba
Mines Branch, claim map,
scale 1:31 680.
Mihychuk, M. 1988: Preliminary Map 1988 SL-1 Herb Lake,
Manitoba Mineral Resources Division
surficial geology and aggregate
resources, scale 1:50 000.
Province of Manitoba and Geological Survey of
Canada 1965: Map 2566G Herb Lake, Province
of Manitoba and Geological Survey
of Canada, aeromagnetic, scale 1:63 360.
Province of Manitoba, Geological
Survey of Canada 1979: Map 36063G: Wekusko Lake;
Province of Manitoba,
Geological Survey of Canada, airborne gamma ray spectrometry, scale 1:250
Russell, G.A. 1957: Map 55-3, Structural studies of the Snow Lake -
Herb Lake area; 1:31 680
scale, geological map, accompanying Manitoba Mines
Branch, Publication 55-3.
Surveys and Mapping Branch 1990: Map 63J/13,
Herb Lake; Surveys and Mapping Branch,
Ottawa, topographic map, scale 1:50
The No. 2 zone continues on Astra 34 which is owned by Hudson Bay
Mining and Smelting Co., Limited. That company is mining its portion of the
orebody via an 1 829 m (6000 ft) drift from the 594 m (1950 ft) level of its
Stall Lake Mine. The geological description on this card details the portion of
the deposit on the Rod claims. Also: see 63J/13 CU 2.
Tonnes (tons) % Cu % Zn Source
401 784 ( 442 766) 4.75 2.21
Northern Miner, March 14, 1968.
630 000 ( 690 000) Winnipeg Tribune, October
275 300 (*303 400) 7.10 2.88 Coats, et al., 1970, p. 971, with avg.
1.71 g/tonne (0.05 oz/ton) Au, 16.11 g/tonne (0.47 oz/ton) Ag.
680 000 ( 750
000) 5.38 2.53 Northern Miner, October 23, 1969.
*Reserves as of Jan. 1,
1968. Estimate similar to 1966 figure on front of card.
mineralization is shown on Map 55-3, 5.6 km southwest along the north branch of
the Berry Creek Fault. This gold-pyrite-copper showing appears as a gold
occurrence on Map 665 A.
Copper also occurs between the northern and central
branches of the Berry Creek Fault 1.5 km and 4 km southwest of the Rod deposit
and 2.4 km north between the central and southern branches of the fault.
SMH JDB HRW AGJ PA JJJ
03-69 03-73 08-76 09-83 11-84 01-87 08-91 06-02