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RJK Receives 12.2 Tonne Sample Results, Yields Similarities to Lherzolitic Kimberlite Diamond Mines Hosting Large Diamonds
Kirkland Lake, Ontario--(Newsfile Corp. - November 3, 2021) - RJK Explorations Ltd  (TSX...
About this update from Rjk Explorations Ltd. Class A
[{"type":"text","content":"RJK Receives 12.2 Tonne Sample Results, Yields Similarities to Lherzolitic Kimberlite Diamond Mines Hosting Large DiamondsKirkland Lake, Ontario--(Newsfile Corp. - November 3, 2021) - RJK Explorations Ltd (TSXV: RJX.A) (OTC Pink: RJKAF) (\"RJK\" or \"the Company'') has received results from CF Mineral Research in Kelowna BC, from seven large-tonnage, on-surface kimberlite discoveries. Kimberlite samples totalling 12.2 tonnes combined were tested to determine the variability of the geochemistry, to develop preliminary comparisons to other kimberlite fields, and to determine the most promising locations suitable for excavating large tonnage bulk samples. RJK is pleased to report that CF Mineral Research confirms the Lorrain Twp. kimberlite discoveries host lherzolite-type kimberlite where large diamonds (50 carats+) are typically found. The unique geological setting presents the availability of unconsolidated near-surface kimberlite material that is amenable to exceptional low cost processing wherein minimum 50 tonne bulk samples, from multiple locations, can be used to determine the large diamond potential.SynopsisThe indicator mineral geochemistry from all 7 kimberlite bodies indicates the kimberlite magma has incorporated lherzolitic peridotite enriched in olivine, orthopyroxene along with chromium and aluminum spinels and garnets. This region at the base of the lithosphere and upper mantle is conducive for the growth of large diamonds in the diamond stability field at depths of 150 km to 200 km. The high temperature ilmenite peridotites contain megacrysts favouring larger diamond overgrowths forming at temperatures ranging from 1200 Co to 1400 Co. The proto-kimberlite magma indicates an origin of deeper levels in the upper mantle as down to the Transition Zone, from 200 km to 400+ km, based on preliminary whole rock analysis. Samples taken from RC 4 RC drill holes from the Paradis, Robin's Place, Gleeson and HSM kimberlites returned average compositions as follows: SiO2: 46.8%, CaO: 16.9%, Al2O3: 8.8%, Fe2O3: 3.2%, K2O: 1.9%, MgO: 4.3%. Na2O: 1.9%, Cr2O3: .04%, Mn2O3: .06%, TiO2: .29%. Visual Model Explanation:Source: Oceanic and super-deep continental diamonds share a transition zone origin and mantle plume transportation; Luc S. Doucet, Zheng-Xiang Li & Hamed Gamal El Dien; www.nature.com/scientificreports/
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