|
Rice Lake Gold Belt, Manitoba -
Lesavage North
Gold
Goal
The goal
of our exploration on the property is the discovery large high grade gold
deposit like those found at neighboring Red Lake. This is because the area
geology is suited to the formation of such a deposit. The Company has already
identified 4 large areas to be explored this summer, following a month of field
activity and an initial diamond drilling program. The summer program now
underway is a “boots on the ground” program which includes drilling, surface
geophysics of mineralized zones and prospecting of new exploration targets
identified in the historic data for the property.
Geology of the Johnston Property
The
Johnston property covers a sequence of metabasalt, felsic fragmental epiclastic
and/or pyroclastic rocks, oxide to silicate facies iron formation that is
interlayered with arkosic wacke and garnetiferous mudstone, medium grained
gabbro to leucogabbro (Jeep gabbro) and tonalite to granodiorite.
Lithological units on the Johnston property generally strike east-west and dip
steeply to the north. The area is crosscut by numerous east-west trending,
steeply north dipping shears. The shear fabric is pervasive throughout the area.
On the
Johnston grid, in the area along baseline 7+25S, the bedrock consists of
strongly sheared metabasalt, that locally contains silicate facies iron
formation, and epiclastic rocks. Medium grained gabbro in the area contains
discrete shear zones, but otherwise lacks a strong shear fabric.
Autumn 2005 Exploration
Program
146 soil
samples were collected for Enzyme Leach analyses during September 2005. All
samples were referenced to UTM coordinates using a Garmin GPS as well as the cut
lines on the established Johnston Grid. Samples were analyzed at Activation
Laboratories in Ancaster, Ontario.
The soil
sampling program was conducted primarily in the area 100 m north and south of
the 7+25S baseline, from 48+00E to 61+00E, with minor sample collection
elsewhere. The analytical data indicates a gold anomalous zone between lines
51+00E and 53+00E that correlates well with the zone of brown carbonate.
A
drilling program consisting of five drill holes totaling 732 m was conducted
during October 2005. Four holes were drilled in the area of the 7+25S baseline
between 51+35E and 54+00E to test the brown carbonate zone. These drill holes
intersected sheared epiclastic rocks, brown carbonate, sheared mafic rock (metabasalt)
and gabbro. The brown carbonate zone contains numerous chloritic, pyritic, ±
graphite zones. Drill hole L-05-05 (collared at 1+25S, 49+00E) intersected
diorite and altered diorite.
Drill
holes L-05-01 to L-05-04 tested a weak to moderate VLF conductor at the margin
of the carbonate alteration zone whereas drill hole L-05-05 tested a strong VLF
conductor in a small depression adjacent to sheared gabbro. Summary drill logs
are presented below and detailed drill logs are presented in Appendix 2.
75
samples of core were split from drill holes L-05-01 through L-05-04. Samples
were analyzed at TSL Laboratories in Saskatoon, Saskatchewan. Assay results are
presented in Appendix 3.
|
Drill Hole |
Interval
|
Description |
Assay Values |
|
L-05-01 |
5.00-11.50m
11.50-55.75m
55.75-63.40m
63.40-79.20m
79.20-130.00m |
Sheared Epiclastic
Rock
Carbonate Zone
Sulphidic Shear
Zone
Gabbro
Mafic Volcanic |
12.86 Au g/t
19.00-20.00m
2.23 Au g/t
20.00-21.00m |
|
L-05-02 |
6.90-26.70m
26.70-84.10m
84.10-85.90m
85.90-89.85m
89.85-131.00m |
Sheared Epiclastic
Rock
Carbonate Zone
Sulphidic,
Chloritic, Graphitic Zone
Carbonate Zone
Mafic Volcanic |
3.09 Au g/t
33.50-34.50m
2.13 Au g/t
68.80-69.55m
1.41 Au g/t
69.55-70.30m |
|
L-05-03 |
4.60-26.25m
26.25-71.80m
71.80-80.85m
80.85-96.45m
96.45-99.15m
99.15-114.75m
114.75-124.10m
124.10-126.70m
126.70-170.00m |
Sheared Epiclastic
Rock
Carbonate Zone
Sulphidic,
Chloritic, Graphitic Zone
Gabbro
Mafic Volcanic
Carbonate Zone
Altered Mafic
Volcanic
Carbonate Zone
Mafic Volcanic |
3.40 Au g/t
127.30-128.30m |
|
L-05-04 |
1.50-13.70m
13.70-60.15m
60.15-89.05m
89.05-103.50m
103.50-150.00m
150.00-170.00m |
Sheared Epiclastic
Rock
Carbonate Zone
Altered Mafic
Volcanic
Carbonate Zone
Altered Mafic
Volcanic
Sheared Mafic
Volcanic |
|
|
L-05-05 |
3.10-18.05m
18.05-18.80m
18.80-37.60m
37.60-131.00 |
Diorite
Shear Zone
Altered Diorite
Diorite |
|
Table 3: Summary of Johnston Grid
Autumn 2005 Drilling Program
Results
The
distribution of gold and arsenic in soil samples are shown in Figures 4 and 6.
These plots show a discrete Enzyme Leach gold anomaly overlying parts of the
brown weathered carbonate zone. Drill holes L-05-01 and L-05-02 intersected up
to 12.86 g/t Au directly below or adjacent to this anomaly (Figure 4)
The drill
program intersected zones of disseminated to well mineralized pyrite at the
northern and southern margins of the brown carbonate zone. Assays of the pyritic
zone indicate that the carbonate alteration zone is gold-bearing with assays
values up to >12 g/t and gold is associated with arsenic in many of the samples
from drill cores L-05-01 to L-05-04.
Drill
hole L-05-05 intersected chloritic alteration, but did not intersect any
evidence of either carbonate alteration, pyritization or quartz veins. These
results are in agreement with the Enzyme Leach results that did not detect any
gold in the soils overlying the shear zone. The strong VLF anomaly is considered
to be the result of water filled zones in the shear.
Conclusions and
Recommendations
This
program has discovered a new zone of high grade mineralization on the Johnston
property with drill intersections of 12.86 Au g/t over 1 m.
The
Enzyme Leach program was successful in outlining gold mineralization and
indicates that zones with strong geophysical responses should not be drilled
without coincident geochemical anomalies. Geochemical surveys will be carried
out on other portions of the property that are covered by swamp and overburden.
Additional samples of carbonate alteration zone will be analyzed for trace
elements to determine the prevalence of gold outside the areas with visible
pyrite mineralization.
A
follow-up drill program will be conducted on the Limestone Hills area of the
Johnston property.
References
Gaboury,
D. and Weber W., 1984: The Wallace Lake project. In: Manitoba Energy and Mines,
Report of Field Activities, p. 85.
Gaboury,
D. and Weber W., 1984: Wallace Lake West. Manitoba Energy and Mines, Preliminary
Map 1984 R-1.
McRitchie,
W.D., 1971a: The petrology and environment of the acidic plutonic rocks of the
Wanipigow–Winnipeg Rivers region, southeastern Manitoba. In: Geology and
Geophysics of the Rice Lake Region Southeastern Manitoba, McRitchie, W.D. and
Weber, W. (eds.), pp.7-61.
McRitchie,
W.D., 1971b: Geology of the Wallace Lake–Siderock Lake area: a reappraisal. In:
Geology and Geophysics of the Rice Lake Region Southeastern Manitoba, McRitchie,
W.D. and Weber, W. (eds.), pp.107-125.
Theyer,
P., 1983: Geology of gold environments in Bissett/Wallace Lake portion of the
Rice Lake greenstone belt. In: Manitoba Energy and Mines, Report of Field
Activities, pp. 101-106.
Theyer,
P., 1991: Mineral Deposits and Occurrences in the Aikens Lake Area, NTS
52M/3.Manitoba Energy and Mines, Geological Services, 108pp. |