Archer Exploration Down Hole EM Surveys Yield Strong Conductors at Grasset
Archer Exploration Down Hole EM Surveys Yield Strong
Conductors at Grasset
VANCOUVER, BC, August 17, 2023 – Archer Exploration Corp. (CSE: RCHR) (OTCQB: RCHRF) (FSE: 6YR0)
(the “Company” or “Archer”) is pleased to announce that it has received very encouraging results from
down hole electromagnetic (DHEM) surveys recently completed on its 100%-owned Grasset Ni-Cu-Co PGE
project located in the Abitibi Greenstone Belt of Quebec, Canada.
Highlights
• Recently completed DHEM surveys yielded three new highly conductive plates within the H1
Horizon at Grasset
• The newly modeled plates begin 360 metres below surface and have not yet been drill tested
• Conductivity measurements suggest semi-massive to massive pyrrhotite (± pentlandite) is likely the
source of the conductive anomalies
Jack Gauthier, VP Exploration, commented: "Conductive plates modelled from geophysical surveys
indicate the potential for the presence of mineralization such as nickel . The strong and sizeable off -hole
anomalies below hole GR23-03 support our view of the untested potential at Grasset and it confirms the
potential for discovering greater volumes of high -grade nickel mineralization at depth. Additional drilling
is warranted to test these strong conductors.”
The downhole surveys were conducted by Abitibi Geophysics using the InfiniTEM® XL dual loop system
and totaled 3,085 metres in five boreholes. The surveys defined several deep-seated, strongly conductive
targets along the H1 Horizon.
Of particular interest are three strong and deep DHEM anomalous plates (Figure 1) best defined by the
survey in hole GR-23-03. This hole, drilled in May 2023, yielded the best intersection to date within the
H1 Horizon with 1.82% Ni over 4.60 metres, including 5.75% Ni over 0.60 metres (see news release dated
June 15, 2023).
The three large conductors contain known mineralized intercepts in their periphery but remain l argely
untested. The size of th e three modeled DHEM anomalies suggests a much better continuity at depth
when compared to the numerous small plates detected closer to surface (PA and P15 plates in Figure 1).
Figure 1 shows the longitudinal view of the mode lled DHEM conductive plates over nickel metal factor
values (% nickel X estimated thickness).
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Figure 1: H1 Horizon Contour Long Section with DHEM Conductive Plates
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Figure 2: Grasset Deposit Planview and 2023 Drilling
Table 1: Summary of DHEM Survey Results
DHEM Plates Area
(m2)
Conductance
(S)
Depth
(m)
P23-03C 5,800 1,370 360
P23-03D1 42,000 1,500 365
P23-03D2 22,500 750 690
Average conductivity measurements of drill core that was near the conductive plates:
• Mudstone: 12 S/m
• Massive pyrite: 58.6 S/m
• Massive pyrrhotite + pentlandite (H1 in GR23-03): 38,026 S/m
This suggests that semi-massive to massive pyrrhotite (± pentlandite) is the most likely source of the highly
conductive DHEM anomalies. The three newly modeled conductive plates identified begin 360 metres
below surface and have not been previously drill tested.
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Physical property measurements were taken on drilling core near the target plates with a TerraPlus KT-10
Magnetic Susceptibility and Conductivity meter. The measurements were done on potentially conductive
lithologies close to the northern contact of the main ultramafics around the expected location of the
extension of the H1 Zone . The average of 42 measurements on mudstone with disseminated graphite
(mudstone) gave 12 S/m, with the highest being 248 S/m (holes GR23-02, GR23-05). Two measurements
on the barren massive sulfides (60-80% pyrite) in hole GR23-02W1 gave 16.8 and 99.6 (average 58.6). The
conductivity value obtained on the massive pyrrhotite with pentlandite that assayed 5.75% nickel over
0.60 metres in hole GR23-03 was 38,026 S/m. This indicates that the mudstone and the massive pyrite are
relatively poor conductors and unlikely sources of the strong DHEM anomalies at depth. Comparing those
measurements to the conductivity of the DHEM plates (Table 1) suggests that that the most likely source
of the conductive plates is massive pyrrhotite +/- pentlandite.
It should be noted that small lenses of barren pyrrhotite have also been identified in the mudstone in
some holes. It is thought that these may not be as extensive compared to nickel-bearing pyrrhotite in the
ultramafics and could be filtered out by their location in the stratigraphy.
Table 2: Detailed DHEM Conductive Plate Characteristics
Hole ID DHEM Plate X
(m)
Y
(m)
Z
(m)
Dip
(°)
Dir
(°)
Length
(m)
Depth
Extension
(m)
Conductivity
(S)
GR-15-74 P15-74A 679713 5540064 50 90 233 50 50 200
GR-15-74 P15-74B1 679745 5540045 125 80 233 50 100 1,859
GR-15-74 P15-74B2 679760 5540010 75 85 240 50 100 1,859
GR-15-74 P15-74B3 679755 5540005 -45 80 238 25 25 500
GR-15-77 P15-77A 679807 5539978 25 90 228 50 50 2,000
GR-15-80 P15-80A 679844 5539934 40 90 45 45 75 2,500
GR-23-03 P23-03A 680029 5539685 -38 90 225 25 40 300
GR-23-03 P23-03B 680027 5539688 -47 90 225 25 10 20,000
GR-23-03 P23-03C 680088 5539639 -70 90 223 93 62 1,370
GR-23-03 P23-03D1 679901 5539863 -75 80 225 140 300 1,500
GR-23-03 P23-03D2 679865 5539835 -400 80 225 150 150 750
GRA-01 PA-01A 679834 5539913 190 75 233 40 50 2,500
GRA-01 PA-01B 679795 5539980 100 80 215 25 25 1,000
GRA-01 PA-01C 679851 5539879 160 90 233 15 15 2,500
GRA-01 PA-01D 679851 5539858 145 90 53 30 50 2,500
GRA-02 PA-02 679539 5540167 150 75 190 50 150 500
GRA-03 PA-03A 680115 5539710 250 90 228 75 50 500
GRA-03 PA-03B 680100 5539665 150 90 228 100 100 1,000
GRA-06 PA-06 679655 5540100 110 75 190 25 25 500
Conductance over 500 Siemens (S) are of interest for massive to semi-massive pyrrhotite +/- pentlandite
especially given the high tenor of the mineralization at Grasset. Plate P23-03B is a very conductive in-hole
anomaly that fits with the 0.60 metres of massive pyrrhotite/pentlandite that assayed 5.75% in hole GR23-
03 (see news release dated June 15, 2023).
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2023 Drill Holes Completed
Holes GR23-04 and GR23-05 were completed with disseminated sulfides intersected within the extensions
of H3 and H1 zones. Assays are currently pending. Hole GR23 -06 is underway and nearing completion,
testing a deep-seated 3D magnetic anomaly at the north-west limit of the mineralized zones.
Table 3: Drillhole Collar Coordinates
Hole ID Easting
(UTM)
Northing
(UTM)
Elevation
(m)
Azimuth
(°)
Dip
(°)
Hole Length
(m)
GR23-01 679759 5539876 291 21 -90 446
GR23-02 679859 5539783 291 322 -88 759
GR23-02W1 679859 5539783 291 322 -88 874
GR23-03 679939 5539491 291 30 -60 576
GR23-04 679374 5537683 291 45 -55 885
GR23-05 679323 5539538 291 50 -70 1,152
Collar coordinates are UTM Zone 17N
Azimuths and dips are taken from survey record at collar unless otherwise noted
Table 4: Summary of Assay Results – Ni-Cu-Co-PGE
Hole ID From
(m)
To
(m)
Length
(m)
Ni
(%)
Cu
(%)
Co
(%)
Pt
(g/t)
Pd
(g/t)
GR23-01 No significant mineralization observed
GR23-02 514.5 515.0 0.50 0.67 0.03 0.02 0.17 0.39
GR23-03 358.0 358.5 0.50 0.53 0.04 0.01 0.08 0.17
GR23-03 403.0 408.8 5.80 1.55 0.18 0.04 0.35 0.82
Including 404.2 408.8 4.60 1.82 0.22 0.04 0.40 0.95
Including 408.2 408.8 0.60 5.75 0.24 0.13 1.68 3.85
GR23-04 Assays pending
GR23-04 Assays pending
All lengths are downhole lengths and true widths are expected to be greater than or equal to 60-70% of downhole lengths
Table 5: Summary of Assay Results – Gold
Hole ID From
(m)
To
(m)
Length
(m)
Au
(g/t)
GR23-03 98.0 98.5 0.50 1.39
GR23-03 110.0 111.0 1.00 0.90
Including 110.0 110.5 0.50 1.28
GR23-03 265.8 266.6 0.80 16.19
Including 265.8 266.1 0.30 49.10
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Qualified Person
The scientific and technical content of this press release has been reviewed and approved by Mr. Jacquelin
Gauthier, P.Geo, Vice President, Exploration, who is a "Qualified Person" as defined by National
Instrument 43 -101 - Standards of Disclosure for Mineral Projects. Mr. Gauthier is satisfied that the
analytical and testing procedures used are standard industry operating procedures and methodologies,
including sampling, analytical and test data underlying the technical information disclosed in this news
release.
About Abitibi Geophysics
Abitibi Geophysics has built a 30 year reputation internationally with safe, efficient, reliable high quality
geophysical data acquisition, processing and interpretation services to help our clients find a variety of
mineral resources and expand their exploration programs. Our products also include data compilation,
modeling/inversion and interpretation services.
Abitibi Geophysics’ InfiniTEM® XL dual loop system generates a large primary electromagnetic field that
couples with deep, steeply dipping conductors while minimizing the response from conductive
overburden. The secondary field induced in the conductor is detected by a sensor located on the surface
or inside a borehole. The downhole surveys were completed using a DigiAt lantis system at a low base
frequency (1Hz).
About Archer
Archer Exploration is a Canadian Ni -Cu-Co-PGE focused exploration and development company with an
extensive portfolio of assets in Quebec and Ontario, Canada. The Company’s flagship asset is the Grasset
Project, located within the Abitibi Greenstone Belt, with an Indicated Resource of 5.5 Mt @ 1.53% NiEq.
In addition, the Company holds a portfolio of 37 properties and over 300 km2 in the world -class mining
district of Sudbury, Ontario.
The Company’s growth strategy is focused on the exploration and development of its nickel sulphide
properties within its portfolio. Archer’s vision is to be a responsible nickel sulphide developer i n stable
pro-mining jurisdictions. Archer is committed to socially responsible exploration and development,
working safely, ethically, and with integrity. For more information, please visit
www.archerexploration.com.
Tom Meyer
President & Chief Executive Officer
Tel: +1 866.899.7247 (RCHR)
Email: [email protected]
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