(TheNewswire)
Highlights
-
-Final resultsfrom Hi-tech full tensor ultrasensitive magnetic surveyreceived.
-The systemappears to successfully map the LCT pegmatite dykes, illustrating thatthere may be a wider and longer system of anastomosing dykes than previouslythought.
-Signatures up to100 m wide.
-Drilling andchannel samples confirmed multiple 1% LiO dyke intervals over 1 mwidth with coincident elevated Ta, Sn, and Cs values.
Historic soilsampling in a heavily treed area in the southeastern part of theproperty identified coincident Li, Ta, Sn, and Cs values. The QMAGTsystem identified a large vertical magnetic gradient anomaly (AlphaPrime) coincident with the soil anomaly.
-The drill programplanned for August and is already permitted.
Vancouver, British Columbia – TheNewswire - July, 6 th 2023– Lake Winn Resources Corp. (“ Lake Winn ” or the “ Company ”) (TSXV:LWR)(FSE:EE1A) is pleased to announce that it has receivedthe final processed data from Dias Geophysical QMAGT system. Webelieve that the QMAGT system has successfully mapped the LCTpegmatite dyke swarm. Anomalies coinciding with the known dykes appearto coalesce into numerous larger anomalies which range from 10 m to100m widths and can be intermittently traced along strike for up to 7km. Historic drilling and channel sampling has proven numerousintervals of mineralized pegmatite grading >1% LiO 2 over 1 m to 16.65 mintervals. The QMAGT results will greatlyassist the upcoming field mapping and drill program.
QMAGT System
The QMAGT system is a helicopter-borne magnetic surveysystem utilizing a SQUID (superconducting quantum interference device)sensor measures the complete gradient tensor of the earth’s magneticfield. The SQUID sensors are developed by Supracon AG of Jena,Germany. Operating within a liquid helium bath, the sensors measurethe magnetic field with great sensitivity. The survey was not withoutits challenges due to weather and topography, the system lostsensitivity over the steep cirque valleys (difficult to drape by anysystem) and in the last flight when it was running low on helium.Elsewhere the system delivered numerous vector products of excellentquality. These will be passed on to consultants to model the magneticsources in 3-D, a task the vector data is wellsuited for. For this news release we will focus on the Bzz datachannel which maps the vertical magnetic gradient.
Vertical Gradient Results andInterpretation
Figure 1 shows a colored grid map of the Bzz datachannel from the survey, the left image is colored, so the zones ofhigh gradient are the “hot” red colors, the right image is coloredby reversing the palette so that the zones of low gradient are the“hot” red colors. The current thinking is that the LCT pegmatiteshave very little magnetic response, so they are the zones of lowgradient, whereas when they were intruded into the surroundingsandstones, a hornfels was formed causing the high vertical gradients.The red colors in the right image of Figure 1 thought to map directlythe LCT pegmatite dykes. It is an exciting result. Other vectors likeBxy (not shown) support this interpretation with coincident anomaliesmatching the reds in the reverse color image for Bzz. The results showa dense swarm of pegmatites, tens of metres across near northern drillholes. Drill hole MAC06 encountered 17.96 m of LCT pegmatite grading1.03% LiO 2 and drill MAC07drilled from the same site at a 60° dip encountered 10.94 m of LCTpegmatite grading 1.47% LiO 2 (Figure 2). In Figure 1 a strong LCT pegmatite response canbe seen semi-continuous over the entire property measuringapproximately 100 m across over many kilometres. Close inspection ofnearby historic collars suggest they drilled near but above thistarget. One of the first tasks for our field crews this summer will beto ground truth these anomalies.
Figure 1 (Left Image): Bzz (Measured vertical Gradient) flownover the center portion of the LNPG project in the NWT near the Yukonborder. White dots are the historic drill holes with their traces. Thelong linear, “red” responses (high vertical gradient) areinterpreted as hornfels (heat altered sediments) that brace eitherside of the pegmatite dykes which are mapped as “Blue” zones oflower vertical gradient. (Right Image) The same Bzz data image withthe color system reversed to highlight the interpreted pegmatite dykesas “Red” zones, for easier interpretation .
Figure 2 illustrates the northern part of the surveyedarea, around drill holes MAC 06 and 07, with the reverse-colored imagefrom Figure 1 (Right Image) and overlain by topographic contours. Itis clear from the contours where there are deep cirque valleys acouple of hundred metres deep the helicopter was not able to drape andfollow the terrain, making the distance from ground to sensor greaterand the image gets “washed” out with less detail. The interpretedLCT pegmatite dykes have been traced out with lines of white dots.They seem to get cut-off by the cirques, but we know from outcrop theypersist in the cliff faces of the cirques. The apparent cut-off is dueto loss of sensitivity due to the height above the ground. Signaldrops off at the square of the distance. On the upper plateau, a swarmof anastomosing dykes can be perceived including the dyke that wassampled by MAC 06 and 07. Part of the summer field program plan is toexpand on the intercepts in these holes using 50 m step outs. Thismagnetic data will aid in locating these collars.
Figure 2 A zoomed in view of the NW part of theproperty, with the Bzz data, reverse colors, with 5 m topographiccontours. The red linears are thought to map out the LCT pegmatitedykes. Note the swarm near historic drill holes MAC06 and MAC07, atwhich these drill holes only test one dyke in the swarm. The channelsample highlights are shown in Table 1, below.
In the past field crews sampled the exposed pegmatiteoutcrop in the faces of the cliffs that define the cirques, the clifffaces were given colloquial names after famous “walls.” Table 1lists the channel samples from the various cliff faces sampled. Thesmall dykes sampled in Table 1 would not be able to be resolved in themagnetic data due to the small width, only the larger dykes and thecombined swarms will show. Refer to Figure 2 for locations. The dykeswarm seems to continue in the magnetic data to the south past Cirque6 in an unexplored part of the property. Figure 2 also illustrates an80 m to 100m wide magnetic signature that traverses the entire dataset for several kilometers. This anomaly has been named Alpha Prime.Several scout drill holes are planned to test these, this summer.
Table 1: Channel sample results
Cliff face name | Width (m) * 1 | Li 2 O(%) | Ta 2 O 5 (g/t) | SnO 2 (%) |
Prison Wall | 4.40 | 1.12 | 55.0 | 0.05 |
1.20 | 2.33 | 59.0 | 0.05 | |
1.90 | 0.87 | 56.4 | 0.03 | |
1.70 | 1.57 | 250.3 | 0.95 | |
Berlin Wall | 4.00 | 2.04 | 57.8 | 0.05 |
1.95 | 2.29 | 48.7 | 0.01 | |
0.95 | 3.10 | 53.6 | 0.03 | |
Great Wall of China | 16.65 | 1.21 | 65.4 | 0.03 |
3.75 | 1.67 | 45 | 0.03 | |
7.00 | 1.41 | 59.9 | 0.04 | |
1.25 | 1.83 | 67.3 | 0.05 | |
5.15 | 1.63 | 52.9 | 0.01 | |
Hadrian’s Wall | 1.05 | 0.85 | 80.9 | 0.05 |
6.30 | 1.86 | 116.7 | 0.05 |
*1 – Measured widths are estimated to be 98 to 90% ofthe true thickness, due to the near vertical dip.
2006-2007 Soil samplingcorrespondence with the southern extent Alpha Prime pegmatite dyke
The concept that the Alpha Prime dyke, is part of theLCT pegmatite swarm, is supported by soil sampling undertaken in thesouth end of the property in 2006 and 2007. These soil surveys usedtwo assay methods, one with Aqua Regia for a selected digest, and oneusing four-acid near total digest. Lithium was only assayed for in thenear total digest. Figure 3 shows the results of this work. The traceof Alpha Prime has a strong (red circles) > 127 ppm Li-in-soilanomaly coincidence with it.
Figure 3 SW portion of the QMAGT survey, colorschanged (to pastel purple) to highlight the soil geo-chem resultsassociated with the pegmatite swarm. The Alpha Prime dyke signature isprominent and named in the figure. Each dot represents a soil samplesite, the dots have been colored by Li ppm results as shown in thelegend.
Soil sampling seems to be an effective tool in thisenvironment, and there are plans to expand this soil grid in key areasof interest, to follow Alpha Prime, and to define the dyke swarms onthe plateau near Cirques 3 to 6.
Patrick Power, CEO of Lake Winn Resources Ltd said,“We took a bit of a risk with using the relatively new QMAGT systembut as you can see it has proven worthy, this will greatly aid in ourupcoming drill program. The more we work on this property the more itbecomes apparent that we have a large system of LCT pegmatite dykes,our goal is to as quickly as possible narrowdown the best zones in this system which stretches more than 7kilometers. Our vision is to define circa 100mT of >1%LiO 2 in the most rapidlow-cost manner. This summer’s work will be a big step towardsmaking this a reality.
Lake Winn is currently in planning with ourconsultants, Archer, Cathro & Associates (1981) Limited, to scope,price, and plan a 3,000m drill program to commence in early August.
The technical information in this news release has beenapproved by Heather Burrell, P.Geo., a senior geologist with Archer,Cathro & Associates (1981) Limited and a qualified person for thepurpose of National Instrument 43-101.
About Lake Winn
Lake Winn Resources Corp. is a mineral explorationcompany focused on advancing its 100% owned Little Nahanni LithiumProject (“LNLP”), which is located in the western NorthwestTerritories near the Yukon Border. The project covers 7,080 hectaresthat encompasses a 7 km long, and up to 500 m wide, lithium, tantalum,and tin pegmatite dyke swarm. Historical drilling and channel samplingon the Project confirms the presence of significant Lithium, Tantalum,Tin, and Cesium.
On Behalf of the Board of Directors of Lake WinnResources Corp.
PatrickPower
CEO andDirector
Lake WinnResources Corp.
Telephone: (604)218-8772
“Neither TSX Venture Exchange norits Regulation Services Provider (as that term is defined in thepolicies of the TSX Venture Exchange) accepts responsibility for theadequacy or accuracy of this release.”
Copyright (c) 2023 TheNewswire - All rights reserved.