Tagish Lake Gold Claims Memorandum — April 11, 2016

Tagish Lake Gold Claims Memorandum — April 11, 2016

1 MEMORANDUM
Date: April 11, 2016
From: Sam Zastavnikovich
To: Gold Mask Ventures Inc. (GMVL)
SUBJECT: Anomalous Rock and Soil Geochemistry on Tagish Lake Gold Claims
I have reviewed the analytical multi-element geochemistry for the 33 bedrock samples collected
by prospector Larry Lutjen [AR 23960], and 296 soil samples collected by Archie Wiggins of
Breakaway Explorations [AR 29757] on the GMVL Tagish Lake mineral property, which
contains the MM05-1 gold showing trench discovered by BCDM geologist M.G. Mihalynuk
along the western shoreline of Taku Arm during RGS Fantail Lake [OF 1989-13], as
summarized in the MINFILE No 104M 088 overleaf.
Correlation Tables for the rock and soil samples have been constructed in order to identify the
best precious metals pathfinder elements for the strongly anomalous rock sample gold and silver
values obtained in trench MM05-1 quartz vein samples OZ-1, 45.8g/t Au, 52.3g/t Ag, and neartrench sample GF-17, 17.4g/t Au, 12.8g/t Ag. Rock sample descriptions are lacking in the
AR 23960, but can be reasonably guessed at based on the multi-element geochemical signatures.
Other strongly gold- and silver-anomalous rock samples collected to the southwest and northwest
of the trench showing, with up to 9.5g/t Au and 14.4g/t Ag, lie along 220/40 degree and 60/300
degree lineaments, as outlined on the topo/geology map below, which likely coincide with goldmineralized fault splays off the crustal-scale Llewellyn fault present within Taku Arm conduit.
Silver is by far the strongest pathfinder element for gold in rocks, and vice versa, at r=0.7
coefficient, as almost all gold-anomalous rock samples are also anomalous in silver.
The anomalous presence of chromium, which in these rocks correlates with gold and silver rather
than with the mafic elements Ni, Co, Fe, V, indicates presence of the Cr-mica-clay listwanite
alteration mineral mariposite, well known to occur with gold-rich quartz veins in the Atlin area,
including the Engineer Mine across the lake, which produced > a half million grams of gold.
BCDM geologists state that the L l e w e l l y n F a u l t z o n e e x h i b i t s t r a n s i t i o n a l
c h a r a c t e r i s t i c s a n d v e i n s s u c h a s t h o s e a t t h e B i g h o r n m i n e , U M , and
MM05-1 (104M 007, 084, and 088) are thought to be l o c a t e d a l o n g s e c o n d o r
third-order structures related to Llewellyn Fault zone.
Soil sampling is not nearly as effective for gold exploration as bedrock sampling, which
produced numerous ore-grade Au and Ag values with a minimal number of samples, and
suggests strong potential for presence of gold mineralization on the mineral claims.
A high quality drainage sampling survey, relying on field-sieved lithic silt, free of organic
matter, is required to much better correlate with the known strongly gold-anomalous bedrock
present on GMVL’s Tagish Lake property.
2 MINFILE No 104M 088 Name
MM05-1, L-331 - L-333
Status
Latitude
Longitude
Showing
59º 30' 06" N
134º 17' 28" W
NMI
Mining Division
BCGS Map
NTS Map
UTM
Northing
Easting
Deposit Types
Terrane
Atlin
104M059
104M09W
08 (NAD 83)
6596129
540133
I01 : Au-quartz veins
Stikine
Commodities
Gold, Silver
Tectonic Belt
Intermontane
Capsule Geology: MM05‐1 showing is located on the west shore of Tagish Lake just north of the mouth of Buchan Creek and access is by boat or helicopter. Showing area is underlain by the Devonian to Permian Boundary Ranges Metamorphic Suite comprising greenstone and lesser quartz mica schists (Unit PPm from Open File 1989‐13). A stock of the Early Jurassic Aishihik plutonic suite, consisting of granodiorite intrudes to the southwest. A quartz‐calcite vein mineralized with cubes and crystals of pyrite and arsenopyrite is exposed in an overgrown trench in chlorite‐actinolite‐biotite schist. The vein is a drusy quartz‐flooded shear and breccia zone within the metamorphic rocks. Some kaolinite has been developed and magnetite is also evident. A grab sample from this vein assayed 41 grams per tonne gold and 20 grams per tonne silver (Open File 1989‐13). Best results from rock sampling in 1994 yielded up to 45.8 grams per tonne gold and 52.3 grams per tonne silver (Assessment Report 23960). The L‐331, L‐332 and L‐333 claims were staked in July 1993 to cover the lithogeochemical anomaly (MM05‐1) discovered by M.G. Mihalynuk in the regional geochemical survey of Fantail Lake (Open File 1989‐13). In 1994, L.D. Lutjen conducted physical, geochemical and geophysical surveys over the showing area. The showing was completely covered by alder and in 1994 the sloughed in trench was dug out to a width of 2 metres and a length of 5 metres. The trench had a strike direction of 114 degrees, and the north and south walls were mapped from east to west, with the main vein being about 3 meters in width at this point. In 2007, Hard Rock Gold collected a total of 296 soil samples taken at 50 metre intervals over a 2.6 square kilometre grid. The north‐south grid was placed adjacent to the west of the MM05‐1 area. Copper, molybdenum, lead, zinc, nickel, uranium and selenium all show an anomalously high association with the high strontium, calcium and barium values. The other elements assayed had generally low and have erratic values, including gold, silver and arsenic. The best gold values were 126.3 and 28.9 parts per billion (Assessment Report 29757). EMPR ASS RPT *23960, 29757; EMPR BULL 105; EMPR GEOS MAP 1997-1
EMPR FIELDWORK *1988, pp. 293-309; EMPR OF *1989-13
EMPR PF (In 104M General File - Claim map of 104M, 1970); EMPR RGS 37, 1993
GSC OF 427, 2225 p. 42
http://www.goldmaskventures.ca/Tagish-Lake-Project.html
3 4 ‘Hale Mtn. lineaments’ follow postulated cross faults through the KM05-3 and MM05-1 gold
shows located along Taku Arm western shore, to the west of the crustal Llewellyn fault zone.
5 Highly gold- and silver-anomalous rocks are present in the MM05-1 trench and vicinity, and in
the NW and SW sampled locations, but not directly to the south.
6 296 soils Au,ppb Ag
As
33 Rx Au,ppb Ag As
Ag
0.08 1.0
Ag
0.7 1.0
As
0.01 0.1 1.0
Sb
0.02 0.1 0.4
As
0.4 0.3 1.0
Se
0.00 0.1 0.0
Sb
0.2 0.0 ‐0.2
B
‐0.04 0.0 0.0
Bi
0.0 ‐0.2 ‐0.1
S%
‐0.03 0.0 0.0
Bi
0.05 0.3 0.1
W
‐0.1 ‐0.2 ‐0.1
W
0.09 0.2 0.1
Mo
0.0 0.2 0.3
Tl
0.07 0.6 0.2
Cu
‐0.1 ‐0.2 ‐0.1
Hg
0.03 0.5 0.4
Mo
0.00 0.1 0.1
Pb
0.1 0.2 0.4
Cu
0.05 0.7 0.2
Cd
0.1 0.0 0.6
Pb
0.06 0.4 0.1
Zn
0.0 ‐0.2 0.5
Cd
0.02 0.5 0.0
Zn
0.00 0.1 0.0
Ni
0.0 ‐0.2 0.0
Ni
0.00 0.2 0.1
Co
‐0.1 ‐0.3 0.0
Co
0.04 0.4 0.2
Mn
‐0.2 ‐0.3 ‐0.4
Mn
0.04 0.5 0.1
0.01 0.3 0.2
Sc
Fe%
‐0.1 ‐0.3 ‐0.1
Fe%
0.04 0.2 0.2
V
‐0.1 ‐0.3 ‐0.3
V
0.04 0.0 0.2
Cr
0.2 0.1 0.6
Cr
0.01 0.2 0.1
Mg%
‐0.2 ‐0.4 ‐0.4
Mg%
0.04 0.1 0.1
P%
0.07 0.4 0.2
P%
‐0.1 ‐0.2 ‐0.3
La
0.09 0.6 0.2
La
‐0.1 ‐0.2 ‐0.2
0.01 0.3 0.0
Ca%
Ca%
‐0.1 0.2 ‐0.2
Sr
‐0.01 0.2 0.0
Ba
0.05 0.5 0.1
Sr
0.1 ‐0.1 ‐0.2
Ti%
0.03 ‐0.1 0.0
Ba
‐0.2 ‐0.4 ‐0.3
Ga
‐0.01 ‐0.1 0.0
Ti%
0.2 0.0 ‐0.2
Al%
0.01 0.3 0.2
Na%
‐0.01 0.1 0.1
Al%
‐0.2 ‐0.4 ‐0.4
K%
0.05 0.1 0.0
Na%
‐0.2 ‐0.4 ‐0.3
U
0.06 0.5 0.1
Y
‐0.2 ‐0.4 ‐0.3
Th
0.07 0.0 0.0
Correlation Tables for the strongest pathfinder trace elements for gold and silver in rock and soil
samples from the GMVL Tagish Lake gold property.
By far the strongest pathfinder element for gold in rocks is silver, and vice versa, at r=0.7
coefficient, as almost all gold-anomalous rock samples are also anomalous in silver.
Such is not the case for the next best pathfinder elements for gold in rocks, including arsenic at
r=0.4, and antimony, chromium and titanium at r=0.2, plus cadmium, lead and strontium at
r=0.1, since only some of the strongly gold-anomalous rock samples also contain some of these
pathfinder trace elements, as shown in the rock sample analytical results table overleaf. By
association with gold, As and Cr are also pathfinders for silver in rocks, as are Pb, and Mo,
which correlate well with Ca in carbonate.
Although rock sample descriptions are lacking in the AR 23960, the three very strongly gold-and
silver-anomalous ore-grade samples from the MM05-1 trench, OZ-1 and OZ-2, and nearby
GF-17, can be classified by their differing geochemistry. The quartz vein sample OZ-1 also
carries anomalous As and Cr, while the almost equally rich gold-silver quartz-carbonate sample
OZ-3, with >15% Ca, has only anomalous Cr, but not As. Nearby base metals-enriched gold and
silver-bearing quartz vein sample GF-17 also carries anomalous As, Cr, and in addition
anomalous Cu, Mo, Cd, Zn, and the highest lead value of 90ppm Pb.
7 loc'n
33 Rx
trench
OZ‐LL‐94‐01
trench
OZ‐LL‐94‐02
Au,ppb
Ag
45800 >30
30
0.2
As
Sb
115 15
10
Bi
W Mo Cu
Pb Cd Zn Ni Co
Mn Fe% V
Cr Mg% P%
5
5
1
24
4 0.5 27 23 12 490 2.0 55 120 0.6
3 15
5
1
30 14 0.5 51 66 24 392 4.2 125 79 0.9
La Ca% Sr Ba Ti% Al% Na%
520 0.5 2.0 73 25 0.18 0.8 0.01
Y
4
980 0.5 1.9 64 85 0.34 3.0 0.11 11
trench
OZ‐LL‐94‐03
20 10
3
5
5
9
2 0.5 13 13
5 628 0.9 20 115 0.3
480 0.5 15.0 10 15 0.06 0.4 0.01
1
s. of trench
OZ‐LL‐94‐04
30
0.4
15
3
3
5 10
14
4 0.5 20 23
8 258 1.7 29 30 0.5
70 0.5 0.3 10 15 0.03 0.8 0.01
1
s. of trench
OZ‐LL‐94‐05
30
0.2
10
3 10
5
1
54
8 0.5 66 56 23 362 4.2 133 101 1.2 1590 0.5 1.5 182 75 0.16 2.4 0.15 13
s. of trench
OZ‐LL‐94‐06
30
0.2
5 10
1
70 12 0.5 83 47 33 893 6.4 200 74 2.7 1520 0.5 4.6 41 370 0.13 5.0 0.08 11
3150 >30
5 15
s. of trench
OZ‐LL‐94‐07
30
0.2
5 15
3
5
1
58
8 0.5 76 51 33 1446 5.9 148 68 2.1 1670 0.5 6.2 22 120 0.01 3.4 0.05
8
ssw of tr.
OZ‐LL‐94‐08
30
0.2
5 15
3 10
1
41
6 0.5 49 53 22 1668 4.1 82 33 1.9 1460 0.5 15.0
5
ssw of tr.
OZ‐LL‐94‐09
30
0.2
5
1
3
ssw of tr.
OZ‐LL‐94‐10
30
0.4
5 10
3
5
1
ssw of tr.
OZ‐LL‐94‐11
40
0.2
5
3
5
5
1
4
6 0.5 57
ssw of tr.
OZ‐LL‐94‐12
30
0.2
5
3
5
5
1
4
ene of tr.
GF‐LL‐94‐01
30
1.8
50
3
3
5
7
ene of tr.
GF‐LL‐94‐02
30
9.4
10
3
3
5
6
ene of tr.
GF‐LL‐94‐03
900
11.0
10
3
3
ene of tr.
GF‐LL‐94‐04
2740
8.4
10
3
3
ene of tr.
GF‐LL‐94‐05
5810
14.4
25
3
3
5 40
ene of tr.
GF‐LL‐94‐06
1140
3.4
10
3
3
5
3 10
5
8 0.5 42
4
6 338 1.8 38 19 0.3
580 10 0.6 63 135 0.12 0.9 0.05 14
12 22 0.5 34
8
9 332 1.8 26 10 1.1
270 20 1.3 23 60 0.02 2.6 0.02 18
3
7 353 2.2 39 42 0.3
650 10 0.3 22 55 0.12 0.6 0.04 13
6 0.5 57
6
7 294 2.5 40 58 0.2
670 20 0.3 18 45 0.11 0.6 0.04 19
14 28 0.5 32
7
4 147 1.8
6 96 0.1
460 0.5 0.2
4 40 0.04 0.4 0.01
9
10 0.5 0.1
7 10 0.01 0.2 0.01
1
3 52 0.5
6
8
1
37 0.4
3 30 0.0
5 34
6 22 0.5
6
5
1
36 0.4
3 11 0.0
50 0.5 0.2 21 15 0.01 0.3 0.01
1
5
6 36 0.5
8 13
1
47 0.7
3 75 0.0
70 0.5 0.0 12 15 0.01 0.2 0.01
1
5
1
60 0.7
3 16 0.0
130 0.5 0.4 55 20 0.02 0.6 0.01
8 11
1
41 0.6
3 15 0.0
5
2
20 66 0.5 12
3 36 0.5
ese of tr.
GF‐LL‐94‐07
1810
1.6
25
3
3
5 17
3 239 1.5
8 86 0.1
ese of tr.
GF‐LL‐94‐08
1130
3.4 105
3
3
5 47 129 66 0.5 24 15 12 359 3.3
9 14 0.1
ese of tr.
GF‐LL‐94‐09
9520
8.8 300
3
5
5
6
ese of tr.
GF‐LL‐94‐10
410
0.6
5
3
3
5
ese of tr.
GF‐LL‐94‐11
130
0.4
5 10
3
5
nnw of tr.
GF‐LL‐94‐12
4090
3.0
nnw of tr.
GF‐LL‐94‐13
30
0.2
nnw of tr.
GF‐LL‐94‐14
1520
3
3
5 23
49 40
2 64 31 16
nnw of tr.
GF‐LL‐94‐15
30
1.2
5 15
3
5
3
53 44
4 188 18
nnw of tr.
GF‐LL‐94‐16
110
0.2
5 10
3
5
2 262 18 0.5 113 15 29 1410 7.2
near tr.
GF‐LL‐94‐17
17430
55
30 38 0.5 29
5
70 0.5 0.0
2
9 15 0.01 0.2 0.01
1
330 0.5 0.2 11 30 0.05 0.5 0.01
5
30 0.5 0.4
8 45 0.01 0.2 0.01
1
1
30 24
5 237 26 21 142 4.4 10 401 0.1
80 0.5 0.3 13 30 0.01 0.2 0.01
1 672
2
2 65 170 20 774 15.0 109 107 1.6
630 0.5 0.5 26 65 0.11 3.4 0.05
1
2 210
8 0.5 63 15 36 1723 5.2 69 83 1.5
570 0.5 0.8 45 135 0.01 1.0 0.02
3
3
3
5
8 150 20
5 15
5
5
1 104 10 0.5 103
2.6 195
4 45 0.01 3.0 0.01
2 98 17 11 241 3.4 10 402 0.1
9 28 1204 6.3 163 115 3.0
45 3.3 10 73 0.0
9 1218 3.4
8 50 0.01 0.2 0.01
1
570 0.5 1.7 34 145 0.14 2.5 0.05
40 0.5 0.3
4
3 30 0.01 0.3 0.01
1
8 1.8
220 0.5 6.4 90 60 0.02 1.2 0.01
4
3 13 2.9
290 0.5 2.3 57 175 0.02 2.8 0.05
9
10 0.5 0.1
1
12.8 115
3
3
5 10
76 90
2 76 22 13
48 3.4
5 92 0.0
10 0.5 0.1
5 30 0.01 0.1 0.01
4.0 125
3
3
5 30 214 82
7 304 31 14
51 3.2
6 88 0.0
40 0.5 0.1
9 25 0.01 0.2 0.01
1
5 20
3
5
5 155 12 0.5 42 23 15 1432 3.5 23 47 1.6
10 0.5 5.1 50 80 0.01 0.2 0.01
1
near tr.
GF‐LL‐94‐18
4170
n. of trench
GF‐LL‐94‐19
950
n. of trench
GF‐LL‐94‐20
30
1.0
15
3
3
5
1
67
n. of trench
GF‐LL‐94‐21
2060
15.6
65
3
3
5
8
15 54
0.4
6
4 63 24
9 751 15.0
1 16 18 15
85 4.3
1
4 51 1.5
520 0.5 0.3 14 65 0.09 3.7 0.02
1
5 82 0.0
580 0.5 0.2
1
3 25 0.01 0.2 0.01
Analytical results for the 33 outcrop samples collected on the Tagish Lake property indicate that only anomalous Ag values are consistently associated with anomalous Au values in rocks. The anomalous presence of chromium, which in these rocks correlates with gold and silver rather
than with the mafic elements Ni, Co, Fe, V, indicates presence of the Cr-mica-clay listwanite
alteration mineral mariposite, well known to occur with gold-rich quartz veins in the Atlin area,
including the Engineer Mine across the lake, which produced > a half million grams of gold.
Gold quartz veins (mesothermal, I01) [from EMPR Bull.105 by M.G. Mihalynuk]
L l e w e l l y n F a u l t z o n e e x h i b i t s t r a n s i t i o n a l c h a r a c t e r istics and veins
s u c h a s t h o s e a t t h e B i g h o r n m i n e , U M , and MM05-1 (104M 007, 084, and
088) are thought to be l o c a t e d a l o n g s e c o n d o r t h i r d - o r d e r s t r u c t u r e s r e l a t e d
to Llewellyn Fault zone. 8 296 soil samples at 50m intervals, on 5 3km-long lines 200m apart.
6599000
Tagish Lake soils, Au
Series1
6598500
6598000
6597500
6597000
126ppbAu
6596500
16ppbAu
6596000
29ppbAu
6595500
6595000
539000
539100
539200
539300
539400
539500
539600
539700
539800
539900
540000
Gold in soils, 126ppb Au NW, and 29ppb Au SW of the MM05-1 gold trench showing.
9 6599000
Tagish Lake soils, Ag
Series1
6598500
6598000
0.5ppmAg
6597500
0.6ppmAg
6597000
0.5ppmAg
0.4ppmAg
6596500
0.7ppmAg
1.1ppmAg
6596000
0.6ppmAg
0.6ppmAg
0.6ppmAg
6595500
6595000
539000
539100
539200
539300
539400
539500
539600
539700
539800
539900
540000
Silver in soils, up to 1.1ppm Ag in the SW corner of the grid.
Pathfinder element correlations for gold in soil samples collected on the GMVL Tagish mineral
claims are numerous, but very much weaker than for rocks, ranging only up to r=0.1 for Ag, W,
La, Tl, P, Th, Pb, U, Cu, Bi, Ba, and at r=0.4 for major elements Fe, K, Mn, Mg, reflecting the
disruptive near-surface organic processes as well as oxidation and glacial placering of gold and
the heavy minerals. Anomalous silver values seem to line up NE/SW across the middle of the
grid, and along the Buchan Ck. in the south, though very low correlation exists with the
anomalous soil gold values.
A high quality drainage sampling survey, relying on field-sieved, lithic silt free of organic matter
is required to much better correlate with the known strongly gold-anomalous bedrock on the
Tagish property prior to any additional soil sampling surveys.