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Grass river fig 1
Figure 1. Compilation of pegmatites exposed in surface outcrop2 and drill intersected spodumene-bearing pegmatite1 on the Grass River Lithium Property, Snow Lake area, Manitoba

The Grass River Claims Project (“GRC”) consists of 27 claims totaling 14,873 acres/5980 hectares located 30 km east of the historic town of Snow Lake and 6.5 kilometers east of the Company’s Zoro Lithium Project. The GRC hosts 10 pegmatites exposed in outcrop and 7 drill-indicated spodumene-bearing pegmatite dykes. (Figure 1).

The bulk of mineral exploration in the Snow Lake area was undertaken in the late 1950’s and was primarily designed to assess the general area for base metal massive sulphide mineralization. Ground geophysical surveys (electromagnetics and magnetics) were the primary tool coupled with boots on the ground prospecting. Many holes were drilled to assess base metal environments. During the drilling of geophysical targets, several spodumene pegmatites were intersected1.


The Company’s plans include moving forward with significant working-capital and utilizing modern geophysical and geochemical technologies to supplement boots-on-the-ground prospecting to further explore the GRC spodumene-bearing pegmatite dykes. Modern exploration on the GRC pegmatites has not been undertaken in more than 60 years.

Foremost Lithium continues to focus on exploration on The Grass River into 2023. Ongoing data interpretation of results from a drone-assisted magnetic and LiDAR survey completed by EarthEx Geophysical Solutions Inc. will guide follow-up prospecting and geochemical surveys.

The following steps on this property for exploration leading to discovery include:

  • First pass prospecting of outcrop areas on the claim block focusing on known pegmatite
  • EarthEx Drone-Assisted Magnetic Survey. This is the identical technology the Company recently applied to the Jean Lake property to define the 3D extent and magnetic signature of the high-grade spodumene-bearing Beryl pegmatite dykes
  • Surficial geochemical surveys including Mobile Metal Ions. MMI Technology is the same soil geochemical technology utilized by Foremost on the Zoro property to delineate new drill targets and discovered high-grade spodumene-bearing Dyke 8
  • These surveys will be supplemented with a drone-assisted LiDAR survey
  • A drill program is planned with defined drill targets projected towards the end of 2023.

Results of the magnetic and LIDAR surveys will be released in a news release and on the Foremost’s website when complete, as well as follow up drill program with de-risked drill targets.

Data Sources
1: Cancelled Assessment File 90611, Manitoba Mining Recorder, Manitoba Natural Resources and Northern Development 
2: Bailes, A.H. 1985: Geology of the Saw Lake area, Geological Report GR83-2, 47 pages and Map GR83-2-1.