Caustic Fusion processed four of these Kimberlites. The fifth Kimberlite was not sampled being a small one-metre dyke like intercept. The results are listed in the order of the sequence they were discovered. The Sequoia results were previously released and are shown here for comparison.
Notes on the results
The Sequoia Kimberlite was sent to SRC laboratory,
Sequoia stands out as having the highest diamond count. As previous described in the NR dated
The Alder and Birch Kimberlites also have a coarser than usual diamond population, but have lower stone counts than Sequoia which will equate to lower grades. The indicator chemistry (Processed at CFM laboratory), for these pipes has been received and will be released once interpreted. The Alder Kimberlite is part of a larger complex that includes the HL02 Kimberlite discovered in the 1990's; there is some justification to drilling more of this complex to see if the stones counts vary, between different rock types.
At the Birch Kimberlite, which expresses as a gravity low south of the Black Spruce Kimberlite, the drilling tested the eastern edge of the gravity low.
The Cedar Kimberlite only reported one microdiamond, the rock here a volcanoclastic Kimberlite dominated by mudstone matrix and mudstone fragments. The mudstone falls into to the crater formed by the eruption and dilutes the grade. The EM anomaly tested here is 150 meters in diameter. It is possible that non-diluted Kimberlite occurs either laterally or at depth.
The fall 2021 EM survey over the Diagras project has commenced. This survey is designed to generate new geophysical targets for future drill testing and utilizes new technology and data processing techniques that were not available in the 1990's when that last detailed exploration was conducted.
Once the data from the EM survey has been received the plan for the Spring 2022 program will be formulated and budgeted. This will include a drill program to expand our knowledge of the Sequoia Kimberlite complex and exploration drilling based on the EM survey and this years ground geophysics.
Contact:
Tel: (604) 681-7735
Email: neil@margaretlakediamonds.com
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