BERGBY LITHIUM PROJECT

Bergby Lithium Project

Bergby Project: Lithium Mineralization

Mineralized intervals from drill holes, Bergby Project

Hole NumberFROM (m)TO (m)WIDTH (m)Li2O%Ta2O5 ppm
BBY170014.856.301.450.7731
BBY170020.003.953.951.83163
BBY170032.8511.058.202.06118
BBY1700410.2012.101.902.2674
BBY170052.2012.6510.451.58107
BBY1700611.5516.004.451.4450
BBY170071.406.054.652.71315
BBY170081.109.858.752.63186
BBY1700914.8016.001.202.6812
BBY1700924.5525.651.102.4449
BBY1701027.5536.358.801.1198
BBY170110.707.506.81.87191
BBY170122.253.901.651.1425
BBY170138.009.051.050.688
BBY1701418.8025.256.450.6348
BBY1701515.7532.1016.351.00129
BBY1701617.9036.7518.801.14101
BBY1701712.2513.501.250.592
BBY17018No significant mineralization
BBY1701921.0533.6612.610.8347
BBY1702013.5533.0019.451.12184
BBY1702115.3816.381.000.961
BBY17022No significant mineralization
BBY1702357.165.258.200.1413
BBY1702456.1064.168.060.2788
BBY1702520.0025.075.070.00362
BBY1702649.2052.002.800.02297
BBY17027No significant mineralization
BBY17028No significant mineralization
BBY17029No significant mineralization
BBY1703025.0030.435.431.60155
BBY1703171.5076.004.501.31165
BBY1703268.0071.343.340.09267
BBY1703352.8055.803.001.3368

Drill collars locations and orientations, Bergby Project.
Drilling was conducted with “Wireline 56” equipment proving core with a diameter of 39mm.

Hole_IDEasting SWEREFNorthing SWEREFElevation RH2000AzimuthDipLength
BBY170016129026760564352954554.80m
BBY1700261288167605823509014.80m
BBY1700361287267605903509016.45m
BBY1700461286467605973509017.90m
BBY1700561287767606093509017.95m
BBY1700661286667606133509027.00m
BBY1700761288667606043509012.00m
BBY1700861288667606273509014.75m
BBY170096128746760697371156050.20m
BBY170106128186760609351156050.30m
BBY1701161286467605633509014.40m
BBY1701261287567605553509011.35m
BBY170136128776760518352557517.40m
BBY170146127876760513351154540.80m
BBY170156127566760417351155050.00m
BBY170166127006760333351156044.30m
BBY170176126796760219351157029.30m
BBY170186126046760114351155050.20m
BBY170196127706760466351156044.55m
BBY170206127296760375351156147.20m
BBY170216126686760292351155440.63m
BBY1702261258167603873511550131.10m
BBY1702361263867604723511545113.25m
BBY170246127696760665351154677.30m
BBY170256129516760884351155237.30m
BBY170266130146761014351155262.52m
BBY170276130746761154351155060.00m
BBY170286131366761290351155050.35m
BBY170296132106761443351155050.35m
BBY170306128456760650351156141.45m
BBY170316127126760649351154686.20m
BBY170326127126760649351158280.62m
BBY170336126646760416351154668.20m

Operational Highlights

The Bergby project lies in central Sweden, 25km north of the town of Gavle, and is secured by three exploration permits for a total of 1903Ha. The site is close to infrastructure, with major roads, rail and power supply passing immediately adjacent to the claim boundaries.

The village of Norrsundet lies 5km east of the Bergby project, a deep-water port where until recently a major wood chip and pulp mill operated. Norrsundet provides an industrial site and port and handling facilities, where processing and shipping of lithium or feldspar concentrates could be easily performed.

Leading Edge Materials Corp identified and staked the Bergby lithium project on free ground in early 2016, following on from a regional project generation exercise. Areas prospective for LCT (lithium-caesium-tantalum) pegmatites were identified in various datasets from the Swedish Geological Survey. In one dataset, a boulder sample included the description of the presence of the lithium mineral spodumene.

LCT pegmatites are a chemically and mineralogically distinct set of intrusive rocks which host most of the world’s hard rock lithium deposits. They consist principally of quartz, potassium feldspar, albite, and muscovite. Common accessory minerals include garnet, tourmaline, and apatite, whilst major lithium ore minerals include spodumene, petalite, and lepidolite. In addition to lithium, LCT pegmatites are also mined for tantalum, caesium, tin, ultrapure quartz, po tassium feldspar, albite, and muscovite.

A program of mapping and sampling of the Bergby site during 2016 located an extensive lithium-mineralized boulder field, as reported in full during November 2016.

Assay results from 41 boulders are provided in Table 1, where Li2O (lithium oxide) averaged 1.06% and ranged from 0.03% to 4.56%; and Ta2O5 (tantalum pentoxide) averaged 168ppm and ranged from 1 ppm to 499 ppm.

Further mapping located lithium mineralization in outcrop, as reported during December 2016. Fifteen samples from three outcrop areas returned Li2O averaging 1.71% and ranging from 0.01% to 4.65%; and Ta2O5 (tantalum pentoxide) averaging 133 ppm and ranging from 16 ppm to 803 ppm (see Table 2). Samples included representative chip samples, composite samples and selective grab samples depending on outcrop quality, and were taken from three sites across an area of approximately 350m x 750m.

Three principal styles of lithium mineralization have been observed in boulders and outcrops, providing encouragement that mineralization may be extensively developed.

Styles include:

  1. Homogeneous, fine grained to medium grained leucogranite/aplite: Complex zoned boulders where the aplite textured material appears to intrude coarse grained pegmatite observed. This style is rich in tantalum, with an average grade from 31 boulders of 208 ppm Ta2O5. The lithium mineralogy of this style not yet confirmed, however the low measured specific gravity of highest grade samples suggests petalite is dominant. (Photo 1)
  2. Petalite dominated extremely coarse grained pegmatite: Located in both outcrop and boulders, this style is relatively poor in tantalum and high in lithium. (Photo 2)
  3. Spodumene bearing very coarse grained pegmatite: Coarse grained spodumene crystals have been recognised in boulders, with crystals up to 30 cm in length. (Photo 3)

Ground magnetic data and partial leach soil sampling was also completed during late 2016, providing a picture of the distribution of the potentially lithium-mineralized pegmatites.

Holes BBY17025 to BBY17029 were drilled along the strike of the pegmatite to the north of earlier drill hole, up to 800m from the discovery zone (hole BBY17029). Where pegmatite was intersected in this northern area, it was notable for a lower lithium grade and a significant increase in the tantalum grade, suggesting a different style of LCT pegmatite (lithium-cesium-tantalum) was intersected. Pegmatite was not intersected in holes BBY17027 to BBY17029, which may indicate a steeper dip than anticipated from nearby lithium mineralized outcrop.

Holes BBY1030 to BBY17033 tested down dip from earlier drill holes, and all except for BBY17032 intersected high grades of lithium mineralization consistent with previous intersections. Mineralization remains open in a down dip direction over at least 600m of strike.

Bergby has now been tested by a total of 1525m of drilling in 33 drill holes to a maximum depth of 131.1m over an approximate 1500m strike length.

Key features
  • Newly discovered lithium project in central Sweden, less than 100km from the Woxna graphite mine and close to major infrastructure.
  • Bergby lies in central Sweden, 25km north of the town of Gävle, secured by three exploration licenses that cover a total of 1,903 Ha.
  • The site is close to infrastructure, with major roads, rail and power supply passing immediately adjacent to the claim boundaries.
  • Bergby has been tested by a total of 1525m of drilling in 33 drill holes to a maximum depth of 131.1m over an approximate 1500m strike length.
  • Preliminary petrographic studies indicate the presence of the lithium minerals spodumene and petalite, which should support a traditional mineral processing path.
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