Archer Exploration Down Hole EM Surveys Yield Strong Conductors at Grasset
newswire.ca
Archer Exploration Corp. 17 Aug, 2023, 08:30 ET
VANCOUVER, BC, Aug. 17, 2023 /CNW/ - 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
Figure 1: H1 Horizon Contour Long Section with DHEM Conductive Plates (CNW Group/Archer Exploration Corp.)
Figure 2: Grasset Deposit Planview and 2023 Drilling (CNW Group/Archer Exploration Corp.)
Recently completed DHEM surveys yielded three new highly conductive plates within the H1 Horizon at GrassetThe newly modeled plates begin 360 metres below surface and have not yet been drill testedConductivity 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 largely untested. The size of the 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 modelled DHEM conductive plates over nickel metal factor values (% nickel X estimated thickness).
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/mMassive pyrite: 58.6 S/mMassive 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.
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).
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
|
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 DigiAtlantis 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 in 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.
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The information contained herein contains "forward-looking statements" within the meaning of applicable securities legislation. "Forward-looking information" includes, but is not limited to, statements with respect to the activities, events or developments that Archer expects or anticipates will or may occur in the future. Generally, but not always, forward-looking information and statements can be identified by the use of words such as "plans", "expects", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates", or "believes" or the negative connotation thereof or variations of such words and phrases or statements that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" or the negative connotation thereof.
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SOURCE Archer Exploration Corp.
 For further information: Tom Meyer, President & Chief Executive Officer, Tel: +1 866.899.7247 (RCHR), Email: tom@archerexploration.com
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