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Geology and Gold Exploration 2016, northern Elizabeth Mine area, Fern Elizabeth Gold Exploration Limited, Atikokan, Ontario
Denver Stone
2
Contents page
Regional setting 3
Previous work and goals of the present study 3
Geology 4
Brittle deformation and alteration 5
Gold sampling and analysis 7
Results of gold sampling 10
Recommendations 10
References 11
Appendices 13
Figures
Figure 1 Location and Access 3
Figure 2 Geology of the Elizabeth Mine area 6
Tables
Table 1 Assay results 8
Table 2 Channel samples with assay results 9
Maps accompanying this report
Detailed geologic map of the northern Elizabeth Mine area 2016
Legend for the above map
3
Regional Setting
The mining claims of Fern Elizabeth Gold Exploration Ltd include the past-producing Elizabeth mine and
are located in the western Superior Province of the Canadian Shield, about 10 km northwest of
Atikokan, Ontario. The claims are accessible by the Valerie Falls Road, a secondary road extending south
from Highway 622 (Figure 1).
The Elizabeth Mine is situated in the contact area between plutonic and metavolcanic rocks at the west
margin of the Steep Rock Lake greenstone belt. All rocks are Archean in age.
Previous work and goals of the present study
Gold was discovered in 1900 within quartz veins at a remote site west of Steep Rock Lake and Elizabeth
Gold Mines Ltd was established to mine the gold. Over the next decade, two shafts were sunk and 411
ounces of gold were produced (see reviews of early development work by Wilkinson, 1982; Schnieders
and Dutka 1985; Larouche and Clark 1988, and Stone 2015).
4
Exploration in the area of the Elizabeth Mine was intermittent through most of the last century but
resumed after discovery of a high-grade gold showing (the Bernie Mitch showing) in the late 1970s.
Several companies including Camflo Mines Ltd, Bankit Resources Ltd, Societe Miniere Mimiska Inc and
Vencan Gold Corporation (renamed Red Pine Exploration Inc.) optioned the property and did
exploration work that included drilling more than 100 boreholes. Larouche and Clark (1988) estimated a
possible reserve of 211, 465 tons of ore grading 6.73 g of gold which is contained largely within 4 major
veins in vicinity of the original Elizabeth shafts.
In 2015, Fern Elizabeth Gold Exploration Ltd completed regional mapping and sampling of their 20
patented and unpatented claims in the Elizabeth Mine area. An overall goal of the regional work was to
define anomalous gold occurrences outside of the historic showings. This regional work (Stone 2015)
confirmed the occurrence of gold at known showings and also identified several occurrences of
anomalous gold within plutonic rocks north to northwest of the Elizabeth Mine site.
The present survey represents a follow-up to the regional study and comprises a detailed mapping and
sampling study of plutonic rocks up to 400 m north of the Elizabeth mine shafts. The work was done in
June of 2016 by Denver Stone (PhD, PEng) of RR#2 Bruce Mines, ON P0R 1C0. The survey was
completed by traversing the area and using a global positioning device for spatial control (typically to ± 3
m) of observation points. In some instances, a rock saw was used to cut channel samples from outcrops.
A hand-held spectrometer measured K, U and Th in outcrops. The map and report were prepared by
Denver Stone in June-August 2016. Signature of the author is included as an appendix.
Geology
The present survey area extends north from the No 2 shaft of the Elizabeth Mine and is underlain largely
by granitic rocks (see accompanying map and legend). One mine shaft and several mineralized veins and
showings of the Elizabeth Mine are located immediately south of the study area in gabbro at the west
margin of the Steep Rock greenstone belt (Figure 2).
Granite (unit 15) occurs as large oval masses north of and including the present study area. The granite
bodies have intruded older tonalitic and gneissic rocks that are extensive north of the present area.
Granite also intrudes gabbro and metavolcanic rocks of the western Steep Rock Lake greenstone belt.
Several textural and compositional varieties of granite are recognized in the field as distinguished by
separate codes on the map (e.g. 15b, t) and are described in the legend. Most granite is coarse grained,
massive and pink being composed largely of plagioclase, K feldspar and quartz with a few percent
biotite. Dikes of granite and granite-aplite cut other rock-types; conversely variably assimilated
inclusions of most other rock units are found in granite.
A weak foliation defined by alignment and long axes of quartz and biotite can be discerned in some
granite outcrops. Although variable, the foliation is north to north easterly and roughly parallel to the
5
gabbro contact. The foliation tends to be well developed at the gabbro contact and in the north-
trending zones of shearing and alteration (see map).
Granite is cut by dikes of lamprophyre in the present area. Lamprophyre is a massive to weakly foliated
intermediate rock with mafic phenocrysts of biotite. The lamprophyre dikes have sharp boundaries and
are composed of brownish-weathering and slightly recessive material. Most dikes strike northerly with
widths ranging from .01 to 1.0 m. Lamprophyre dikes are the youngest magmatic rock in the area and
crosscut at least some quartz veins.
Gabbro occupies a roughly 100 m-wide band at the margin of the Steep Rock greenstone belt and also
occurs as smaller units farther south within volcanic rocks (Figure 2). The gabbro is fine to medium-
grained, massive to foliated and dark green to black. Gabbro is composed of hornblende and plagioclase
with a small proportion of foliated and probably chloritic material. Locally, fine-grained and strongly
foliated to gneissic mafic rock is noted and possibly represents metavolcanic remnants within the
gabbro. Large, oval plagioclase megacrysts (5 cm diameter) are observed within the gabbro mainly
within a few meters of the granite contact.
At least two generations of gabbro intrusions are recognized by crosscutting relations at the Elizabeth
Mine and also regionally (see late and early gabbro in Figure 2). The younger of the gabbro generations
is distinguished by a homogeneous and equigranular distribution of minerals and is possibly more felsic
than the older gabbro. Rare gabbro dikes mapped within granite probably represent the younger of the
two gabbro generations. Both generations of gabbro are metamorphosed and cut by quartz veins.
Intermediate metavolcanic rocks occur extensively south and east of the present area. Intermediate to
felsic fragments are observed although the most common variety of intermediate metavolcanic rock is a
fine-to medium-grained plagioclase-phyric material that possibly represents a crystal tuff. Some
outcrops of this intermediate rock are remarkably massive and homogeneous potentially having
originated as an intrusive magma.
Mafic metavolcanic rocks are mineralogically similar to gabbro and are distinguished from gabbro by a
fine grainsize and lack of the massive equigranular texture of gabbro. The mafic metavolcanic rocks
occur as large units south of the present area and locally as small units within gabbro. Mafic
metavolcanic rocks are recognized in the field as foliated and banded mafic rocks with cm-scale bands
weathering as ridges and hollows. Possibly the bands developed as the mafic lava flowed or was
subsequently metamorphosed. Pillows are rare.
Brittle deformation and alteration
Brittle fractures crosscut all rocks and evidently developed late in the structural evolution of the area
after rocks cooled and embrittled. Although many fractures are barren, others acted as conduits for
fluid movement and were filled with minerals such as quartz with accessory chlorite, carbonate,
sulphides and even gold. Fluid movement through fractures has also caused alteration of the wall rocks
6
Figure 2: Geology of the Elizabeth Mine area. Historic shafts and some mineralized veins are shown.
of fractures. Small alteration zones are recognized as intervals adjacent to fractures within which wall
rocks are changed in colour (granite is normally reddened or bleached) and primary minerals such as
biotite and plagioclase are changed to chlorite, sericite and carbonate. Rarely, accessory sulphide
minerals are developed in alteration zones and are considered to be desirable pathfinders to gold
mineralization.
7
A large but poorly defined zone of alteration and brittle deformation extends northerly from the No 2
shaft of the Elizabeth Mine (see accompanying map). This zone is up to 10 m wide but extreme
northern and southern ends of the zone are not well defined by mapping due to poor exposure of
bedrock. Southward, the alteration zone possibly extends under the No. 2 shaft and connects with
mineralized veins that were historically mined. The northern extent of the zone (north of 5405900 m on
accompanying map) is unknown. Veins of white to grey quartz (up to 1 m wide) are common within the
zone and the granitic host rock is altered with enrichment in quartz, chlorite, sericite and carbonate at
the expense of plagioclase and K feldspar. This interpretation of an altered zone is supported by
spectrometer measurements which generally show low percentages of K (1 to 2 %) within the alteration
zone compared to about 3% in granite elsewhere (see values posted on accompanying map).
The altered granite and gabbro within the zones tend to be strongly foliated and crenulated probably
due to shearing. Quartz veins, although locally boudinaged and recrystallized, are mainly massive and
appear to have post-dated the shearing. Little is known about the kinematics and overall amount of slip
on this zone of shearing and alteration.
A second zone of alteration characterized by a stock work of quartz veins within reddened and altered
granite extends northerly near the eastern contact of the intrusion (see Figure 2 and accompanying
map). A linear escarpment on the west side of this alteration zone is suggestive of a north-trending
brittle fault at the base of the escarpment. A large cleared outcrop on the escarpment is cut by 3
narrow brittle faults that are possibly connected to the larger structure at the base of the escarpment
(see location of the outcrop and faults at 593100 m E and 5406000 m N on the accompanying map). The
brittle faults are meter-wide zones of highly fractured and rusty rock with quartz veins and accessory
pyrite.
Gold sampling and analysis
Approximately 70 samples were collected from the Elizabeth detail area and analysed for gold content.
In most cases, the samples (Table 1) were fist-sized grab samples derived by breaking the rock with a
hammer. Otherwise, a rock saw was used to cut channel samples from outcrops that could not be
broken with a hammer or else to derive a continuous series of samples across an outcrop (Table 2). In
the case of channel samples, two parallel cuts were made in the rock roughly 4-6 cm apart and of 4-6 cm
depth and the intervening material was broken with a chisel and hammer. The length of each channel
cut that was collated as a sample is typically 0.3 to 1.0 m (see Table 2).
The sampled material is mainly quartz veins or a combination of a quartz vein and the host rock of the
vein. The host rock was typically granite or gabbro (see codes for host rocks in Tables 1, 2). Alteration
minerals (such as chlorite or carbonate) that were observed in the sampled material are also noted.
8
Table 1: Assay results, Elizabeth detail area 2016 Waypoint Northing Easting Host Rock¹ Alteration ¹ Sample Au ppm
UTM Zone 15 NAD 83
mineral
119 5405853 592974.3 12r he 328036 <.005
122 5405851 592958.7 15a,10g,l qtz,he,se 328032-35 see Table 2
123 5405808 592943.2 15a qtz,he 328070 <.005
124 5405823 592949.2 15a,10l qtz 328017-31 see Table 2
125 5405844 592966.6 15a he 328037 <.005
131 5405897 592924.3 15a cl,cb 328011 <.005
132 5405901 592949.7 15a,10g,l cl,cb 328012,61,62 <.005,<.005,<.005
138 5405779 592931.3 15a,10l qtz,cl 328040 0.008
139 5405763 592926 15a?10l? qtz,cl 328041 <.005
140 5405737 592917.1 15a qtz,cl 328013-16 see Table 2
143 5405720 592928.2 15a,10l qtz 328057 1.305
144 5405723 592912.4 15a,10l qtz 328059,60 .005,.022
149 5405640 592913.3 10g qv,cl,cb 328042 1.153
155 5405715 592913.7 15a-12a,10g qtz 328058 0.016
165 5405768 593103.5 15a,10g he 328038 0.155
166 5405796 593097.7 15a,10g he 328039 0.056
185 5405828 593099.1 15a he 328044 0.048
190 5405837 593027.7 15a qtz,se 328043 0.01
200 5405861 593100.6 15a,10g he 328063 0.403
205 5405904 593100 15a,10g he 328045 0.029
209 5405854 593166.4 12c cl 328068 0.008
211 5405809 593121.6 10g,15a cl 328046 0.062
218 5406011 593085.4 15a he 328049 76.114
223 5405981 593109.1 15a he,se 328067 <.005
224 5405968 593121.3 15a he 328066 <.005
225 5405953 593116.5 15a he,qtz 328065 <.005
226 5405934 593128.7 15a qtz,se 328069 0.007
229 5405970 593137.6 15a,10g he,cl,cb 328047 0.009
231 5405916 593135.3 15a qv,he 328064 0.106
233 5405951 593175.1 15a he,qtz 328048 2.73
247 5405971 592963.6 15a he 328050 0.87
253 5405923 593039.3 10g,15a cl,cb 528051 0.026
269 5405789 592841.9 15a he 328052 0.885
285 5405669 592847 15a he 328053 0.018
294 5405617 592831.6 15a,10l he 328054 0.009
302 5405632 592846.8 15a he 328055 0.326
304 5405609 592859.8 2c,10g cl,cb 328056 0.007
5405630 592970 grizzly vein qv 328071 6.593
¹ see codes for rock types and alteration minerals on map legend; qtz-quartz
9
Samples were submitted to Accurassay Ltd of Thunder Bay, ON for analysis of their gold content by the
fire-assay method with a lower detection limit of .005 parts per million Au. The assay results for gold
are listed for each sample number in Tables 1 and 2; final certificates from Accurassay Ltd for the assays
are included in the appendix of this report. Further, the sample numbers and assay results are posted
on the accompanying geologic map. In the case of one long channel sample, a table of assays is shown
on the accompanying map for each interval of the channel cut that represents a separate sample. Also
shown on the map are assay results for a few samples collected during the 2015 mapping program. The
2015 sample numbers are distinct from 2016 sample numbers listed in Tables 1 and 2.
Table 2: Channel samples with assay results Sample No. Waypoint Length (m) host rock¹ Au (ppm)
328013 140 0-0.3 4 cm qv with country tonalite 0.144
328014 140 0-.5 country tonalite and E edge of vein zone 0.013
328015 140 .5-1. central part of quartz-rich zone <.005
328016 140 1-1.7 strong foliated W edge of vein zone and country tonalite <.005
328017 124 0-.6 qtz-rich NW end of zone <.005
328018 124 .6-1.3 strong foliated cl,se,cb altered granite <.005
328019 124 1.3-2.2 strong foliated cl,se,cb altered granite <.005
328020 124 2.2-3.1 strong foliated cl,se,cb altered granite <.005
328021 124 3.1-4.1 strong foliated cl,se,cb altered granite with quartz vein <.005
328022 124 4.1-5.1 qtz-se rich granite <.005
328023 124 5.1-5.8 qtz-se rich granite <.005
328024 124 5.8-6.6 qtz-se rich zone <.005
328025 124 6.6-7.4 qtz-se rich zone 0.007
328026 124 7.4-7.8 cb,cl,qtz zone, possible dike <.005
328027 124 7.8-9.0 qtz-se rich zone <.005
328028 124 9.0-9.5 cl,cb,qtz zone, possibe dike 0.012
328029 124 9.5-10.6 qtz-se rich zone <.005
328030 124 10.6-11.3 qtz-se rich zone 0.008
328031 124 11.3-12.4 cb,cl,qtz zone, possible dike, last .3 m is massive tonalite <.005
328032 122 0-.9 strong foliated cl,se,cb,qtz zone <.005
328033 122 .9-1.6 qtz-cl zone 0.011
328034 122 1.6-2.4 qtz-cl zone 0.045
328035 122 2.4-3.1 qtz-se massive zone <.005
328036 119 0-0.5 orange qv in granite <.005
328037 125 0-0.6 orange qv parallel main fault <.005
¹see mineral codes on map legend; qtz-quartz
10
Results of gold sampling
Sampling was done widely but concentrated in the alteration zones described above. Assay results
range from below the detection limit (<.005 ppm) to several parts per million Au (Tables 1, 2). Grab
samples taken from historic veins (e.g. samples 328042, 328071 shown in Figure 2 and accompanying
map) tend to yield high gold assays (> 1 ppm) and confirm the occurrence of anomalous gold at these
localities.
Grab sample 443271 with an assay of 7.214 ppm Au and collected in the 2015 season (see sample
location on accompanying map) was the stimulus for further sampling in the western alteration zone in
the 2016 season. Results of the 2016 sampling in the western alteration zone were generally poor with
most assays below or near the detection limit. A few samples with strongly anomalous gold (e.g.
328057, 328033 and 328034) are located near the No. 2 shaft and an old pit (592950 m E and 5405850
m N) in the western alteration zone. Overall, the anomalous gold assays seem to be distributed more-
or-less sporadically along the western alteration zone with intervening areas of low gold assays.
A cursory examination of historic drilling indicates that approximately a dozen boreholes drilled by
Mimiska Exploration Ltd in the 1970s and by subsequent investigators (e.g. Sandburg and Cruickshank,
2008, Beaurgard, 1990 and Larouche and Clark 1988)were collared up to a few hundred meters north of
the No 2 shaft and oriented so as to intersect the western alteration zone. Although the logs of these
drill holes were not studied, the location of the holes suggests that the drilling was designed to
investigate the subsurface extent of the western alteration zone. Possibly, the western alteration zone
is characterized by at least sporadic occurrence of anomalous gold at depth as well as on surface.
Sampling of the eastern alteration zone generally produced a larger proportion of strongly anomalous
assays (>.1 ppm Au) than the western alteration zone. In many instances, the anomalous assays came
from old test pits distributed along the western alteration zone. A large outcrop (593100 m E and
5406000 m N) had been previously stripped and sampled and produced two strongly anomalous gold
assays in the present survey ( samples 443266-2.885 ppm Au and 328049-76.114 ppm Au). The strongly
anomalous gold assays come from rusty quartz veins in narrow NW-trending brittle faults.
Despite numerous early test pits, drilling appears to have been minimal in the eastern alteration zone.
Recommendations
The north-trending zones of alteration are the most significant features identified by the present
mapping survey and have sporadic, anomalous gold assays. Further work is needed to define the extent
of the zones and the location and distribution of anomalous gold within them.
11
In the case of the western alteration zone, a compilation of assay results from old drilling will help to
define subsurface extent of the alteration zone and the distribution of anomalous gold. For example,
the compilation of old data might show if a physical connection exists between the western alteration
zone (as shown within granite north of the No.2 shaft on the accompanying map) and mineralized veins
such as the Elizabeth No 1 and Grizzly veins that were extensively studied south of the No 2 shaft.
Future work on the eastern alteration zone should include mapping and trenching due to an apparent
lack of previous drilling data. Detailed mapping should be focused north and south of the present area
to trace extremities of the eastern alteration zone. For example, strongly anomalous gold assays are
derived from the eastern alteration zone at the extreme northern edge of the present survey area.
Further mapping is needed north of the present area to define the northern extent of the eastern
alteration zone and the distribution of anomalous gold within the zone.
The Bernie Mitch showing is south of and directly in line with the presently mapped section of the
eastern alteration zone. Further mapping is needed south of the present area to define whether or not
the eastern alteration zone extends southward to the Bernie Mitch showing.
Finally, the strongly anomalous assays in the area of 593100 m E and 5406000 m N are from rusty quartz
veins in narrow late brittle NW-trending faults. Possibly, another late brittle and N-trending fault occurs
at the base of the escarpment in the eastern alteration zone. Further detailed mapping is needed to
confirm the latter fault, the location of and various connections between the brittle structures.
Trenching would likely be required in critical areas to define the faults and the distribution of gold within
them.
References
Beauregard, A.J. 1990. Evaluation report on the Elisabeth Area Property, NTS 52B/13; unpublished
report by Societe Miniere Mimiska Inc., files of Fern Elizabeth Gold Exploration, Atikokan.
Larouche, C. and Clark, G. 1988. Results of exploration work on the Elizabeth Mine property owned by
Societe Miniere Mimiska Inc. in Freeborn and Baker Townships Thunder Bay area, Ontario; unpublished
report by Societe Miniere Mimiska Inc., files of Fern Elizabeth Gold Exploration, Atikokan.
Sandberg, T.M. and Cruickshank, R.D. 2008. Diamond drilling report covering field activities in February
2008 Moffatt Option (Fern-Elizabeth Claim Block) Freeborn Township Thunder Bay Mining District,
Ontario Lat. 48° 47.9’ North Long. 91° 44.05’ West; unpublished report by VenCan Gold Corporation,
files of Fern Elizabeth Gold Exploration, Atikokan.
Schnieders, B.R. and Dutka, R.A. 1985. Property visits and reports of the Atikokan Economic Geologist,
1979-1983; Ontario Geological Survey, Open File Report 5539, 512p.
Stone, D. 2015. Geology of the mining claims of Fern Elizabeth Exploration Ltd, Atikokan, Ontario; report
submitted to the assessment office of the Ontario Ministry of Northern Development and Mines, 28
pages.
12
Wilkinson, S.R. 1982. Gold deposits of the Atikokan area; Ontario Geological Survey, Mineral Deposits
Circular 24, 54p.
13
Appendices
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15
16
17
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beaverpond
Beaver Dam
593200
592900
592800
593000
593100
593200593100
593000
592900
592800
5406000
5405900
5405800
5405600 5405600
5405700 5405700
5405800
5405900
5406000
Grid coordinates are meters in UTM Zone 15 NAD 83
Detailed geologic map of the northern Elizabeth Mine area 2016
camp
#2Shaft
Stable
Shed
Shed
Boiler
Boilers
DrillSteel
ditch
ditch
ditch
trail
trail
trail
trail
pit
pit
trench
trench
trench
trench
sidecut
pit
pit
soil bank
to BernieMitch Showing
to Valerie Falls Road
to#1 shaft andModred Lake
Area of#3 shaft
x
x
x
x
x
x
x
x
x
x
x
x
x
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boulderpile
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15a
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boulders
15a 15a,10l
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237
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236
216
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194
195
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10g
15a
15a
15a
10l
15a,10l,qv
15aqv
15a,qv
qv
qv
10g
15a
15a
15a,qv
15a
15aqv
15aqv
15a
15a10g
15a
15a,qv
qv
10g15a
15aqv
15a,10g
10g10g
15a,qv
frac
10g
10g
10g
10g10gqv
15a
15a,qv
15a,qv
10g
15aqv
15aqv 15a
10g
12p
qv,15a
15a,qv
15a,10g,qv
10g,qv15a
10g15a
15a
15aqv
15aqvhe
10g
10g
10g,15d
10g
10g
10g
10g
10g15aqv
10g
10g-3a15a
15a
15a
15a,qv
15a
10g
15a
15a
15aqv
15a,qvse,cl
15aqv
15a
15a15a,10gqv
15a,10g qv
10g,15a
15a
15a
15a
15a
15ahe
15a
15aquartzstockwork
10g
15a
15aquartzstockwork
quartzstockwork
qv insheared 15a
x
60
70
80
70
8080
75
70
65
70
70
70
80
75
60
70
80
80
70
60
70
328052
328053
9576238.76
35761
328042
95760
.007
328056
328054
328055
328058
328059328060
328057
328013
328014-16
95774.006
328041
328040
4432717.214
328017-31
328032-35
328036
328037
443266 328068
328049
2.885
328051
328045
443268
.078
328044
443272.069
328039
328063
328064
328043
60
85
80
80
328038
328046
328067
328066
328048
.041
328071
328070
.144
.013,<.005,<.005
<.005
.008
<.005
Channel Sample Meters Assay (ppm)
328017328018328019328020328021328022328023328024328025328026328027328028328029328030328031
<.005<.005<.005<.005<.005<.005<.005<.005.007<.005<.005.012<.005.008<.005
0-.6 (NW).6-1.31.3-2.22.2-3.13.1-4.14.1-5.15.1-5.85.8-6.66.6-7.47.4-7.87.8-9.09.0-9.59.5-10.610.6-11.3
11.3-12.4 (SE)
<.005,.011,.045,<.005
<.005 .010
15a
.062
.155
.056
.048
.029
1.153
76.114
.026
.870
.007
.326
.009
.018
.885
.009
2.730
6.593
.008
<.005
<.005
<.005
.007
.106
.403
<.005<.005
<.005
<.005
.016.005.022
1.305
<.005
3.1
3.3
3.1
1.2
3.4
1.3
3.4
3.8
3.4
.7
2.2
2.4
328011
328061
328062
328012
328050
3.4
3.0
1.4
3.7
3.4
2.8
3.9
3.9
1.3
3.3
2.8
2.7
3.3
2.8
3.3
2.7
3.2
3.1
3.3
3.3
4.0
2.9
3.6
3.0
1.5
3.3
0.6
.7
.5
1.0
.4
1.3
2.0
2.83.3
3.9
3.8 3.0
3.4
3.51.3
1.9
4.2
4.2
3.2
3.3
3.3
2.3
3.3
2.9
3.2
2.2
0.7
0.6
2.0
3.8
3.5
2.7
3.8
2.4
2.4
2.5
3.0
1.1
2.4
3.2
3.4
2.6
1.7
2.9
2.73.1
1.63.1
1.3
3.2
3.8
1.4
3.5
2.3
2.1
3.2
1.7
3.23.0
3.4
3.5
1.1
2.5
3.1
3.3
1.8
0.2
0.2
1.2
3.7
4.24.33.7
1.7
1.8
3.4
2.7
1.2
3.3
0.7
0.9
1.5
3.2
3.13.3
1.1
1.2
2.2
3.7
3.1
4.0
3.2
3.0
4.0
3.2 2.5
3.8
2.3
2.5
2.5
3.1
3.5
1.3
2.6
1.7
3.12.2
1.4
3.7
1.2
2.9
2.0
3.1
1.9
1.93.0
1.6
2.4
1.2
1.0
0.1
0.6
2.3
0.8
1.1
2.71.5
1.2
2.9
1.50.6
2.0
3.2
0.7
2.4
1.3
4.2
1.1
x
257
256
255
254
249
247
250
245
246
244
243
248
133132
131
3.1
3.4
1.0
251
261
262
264
260
129
263
267
265
266
128
259
258
268
269
270271
272274
275
282
142
141
281
280
288
279
277
278
276
273
145
154
146147
148
153
296
284
283
285
286
287290
289295
302
291
297
298152
149
150299
300301
292
294
293
303
304
305
306
151
181182
160155
144
140
143
159
180
179
178
177161136
158
139
127
138 137
162
175
176
116117
115
118
126
123
125
119
192
134
135
120
121
122
130
219
218
217
239
222
221
215240
242
241
253
216
197
196
193
191
190
189
188
174
173
183
212
166
185
187 186
200
199
198
184
164
163
171
165
169
168
172
232
208
231
204
206
207
202
201
210
211
203
1.5
209
0.4
0.5
0.3
0.5
1.0
0.8
226
225
230
229
233
223
234
235
227
228
224
328047
328065
328069
Early: probably Mesoarchean
Late: probably Neoarchean
65
70
x
1154851 .015
PRECAMBRIAN GEOLOGY
of
Northern Elizabeth Mine area, Fern Elizabeth Gold Exploration LimitedAtikokan, northwestern Ontario
NTS Reference: 52 B/13
aLEGENDARCHEANNEOARCHEAN (2.5 to 2.9 Ga)
Biotite Granite Suite15 Biotite Granodiorite to Granite
15a Unsubdivided15b Leucocratic; <6% biotite; inequigranular; white to pink; massive to weakly foliated15c Mesocratic; >5% biotite15d Dikes15q Quartz megacrystic15t Aplite
INTRUSIVE CONTACT
NEOARCHEAN TO MESOARCHEAN (2.5 to 3.4 Ga)
Biotite Tonalite Suite12 Biotite Tonalite to Granodiorite
12a Unsubdivided12b Leucocratic; <7% mafic minerals; white to grey; fine to coarse grained; foliated to massive12c Mesocratic; 7 to 20% biotite; grey to white; medium grained; foliated to massive12d Dikes12g Weakly gneissic, gradational to gneissic suite12m Mafic; >20% hornblende+biotite; typically heterogeneous and gradational to quartz diorite12q Quartz megacrystic12r Granodioritic; gradational to granite suite
INTRUSIVE CONTACTMafic Suite10 Mafic Intrusive Rocks
10a Unsubdivided10d Late massive gabbro to diorite10l Lamprophye
10g Hornblende gabbro, pyroxene-hornblende gabbro (plagioclase+hornblende+pyroxene)10s Sheared or schistose gabbro
7 Metasedimentary Rocks7a Unsubdivided7b Sandstone, minor siltstone7c Conglomerate7f Iron Formation7g Siltstone, minor sandstone
5 Mafic Metavolcanic Rocks5a Unsubdivided5p Pillowed5s Schistose, typically feldspar+chlorite
MESOARCHEAN (2.9 to 3.4 Ga)
3 Mafic to Ultramafic Metavolcanic Rocks (>35% and >90% mafic minerals, respectively)3a Unsubdivided3m Massive flow3p Pillowed3s Schistose, typically feldspar+chlorite
2 Intermediate to Felsic Metavolcanic Rocks (15 to 35% and <15% mafic minerals, respectively)2a Unsubdivided2b Breccia, tuff breccia (pyroclastic and/or volcaniclastic)2c Crystal bearing (feldspar, quartz)2f flow2s Schistose2t Tuff, lapilli tuff, lapillistone (pyroclastic and/or volcaniclastic)
1 Clastic metasedimentary Rocks1a Unsubdivided1b Sandstone, minor siltstone1c Conglomerate1g Siltstone, minor sandstone
Note: Isolated outcrops of one rock type (for example, gabbro-10g) can occur within a coloured domain representative of another rock type (for example, granite-15a).
aThis legend is common several maps of various scales. Not all rock types and symbols occur on every map.
Symbols
Outcrop (observed)
Area of outcrop (observed)
Foliation (trend only, inclined, vertical)
Mineral lineation with plunge
Roads (secondary, trail)
Electric transmission line
Mining claim line and post (observed)
Sample Number, gold assay (ppm)
Swamp
Abbreviations
amp amphibole ep epidoteact actinolite gn galenabt biotite hb hornblende
cb carbonate py pyrite
cl chlorite qcv quartz+carbonate vein
cp chalcopyrite qv quartz veinse sericite
SOURCES OF INFORMATION
Base map information assembled during geologic mapping. Mapping conducted using a
global positioning device with UTM co-ordinates in North American Datum 1983 (NAD83), Zone 15.
In 2007, magnetic north was 0°53 W of True North.
Geology and compilation by D. Stone 2015-16.
Zone of silica, chlorite and sericite alteration and shearing
Fault
Waypoint with UTM coordinates
%K (measured with a handheld spectrometer)
218
3.7