Margaret Lake Diamonds Inc. announce diamond indicator mineral "DIMS" analysis and classification has been completed by C.F. Mineral Research Ltd, on core sample from the Arbutus Kimberlite discovery, of the Diagras project NT. The Diagras project is a joint venture between Arctic Star Exploration Corp. (81.5%) and Margaret Lake Diamonds Inc. (18.5%).

An asterisk "*" present in a column type/header [G10* pyropes, Di*G9/11 pyropes, Di$* clinopyroxenes (Cr diopsides), Di* chromites, G1* eclogitic garnets, and Di* olivines] means that the indicator minerals recovered match the compositions of indicator minerals included in diamond, intergrown with diamond or are from diamond bearing xenoliths. About 11,000 of such diamond inclusion indicators from worldwide sources are present in the C.F. Mineral Research database. Sample DG-2022-08 weighing 970 gms contained only a single G10* pyrope and a single G1* eclogitic garnet.

However the sample contained 92 Di* chromites and 36 Di* olivines. Moreover, the sample contained a Di$* clinopyroxene and five Di* G9/11 pyrope garnets that are sourced from Lherzolite which are known to contain small quantities of very large diamonds. Such Lherzolite minerals are included in diamonds greater than 52 carats from the Ekati Diamond Mine, Canada and are present at the Premier Mine, South Africa, the Lacara Mine, South Africa and the Letzing Mine, Lesotho.

The last mine is known to contain huge diamonds with no or rare small diamonds. Sample DG-2022-09B, weighing 810 gms also only contained a single G10* pyrope garnet and no Di*G9/11 pyrope garnets but contained 68 Di* chromites, 41 Di* olivines and 67 G1* ecologitic garnets. Thus, this sample is dominated by G1* ecologitic garnets from a diamond bearing ecologite source but also contains 3 Di$* clinopyroxenes from a Lherzolite source described above.

Sample DG-2022-09A weighing 1220 gms contained 73 G10* pyropes, 110 Di* chromites, 44 Di* olivines, 32 G1* ecologitic garnets. In addition the sample contained two Di* G9/11 pyropes and a single Di$* clinopyroxene. Thus these indicator minerals were sourced from diamond bearing pyrope and chromite sources as well as a diamond bearing ecologite source as well as from a Lherzolite source of large diamonds.

C.F. Mineral have never previously encountered such a rich source of G10-10* and G10-9* composition pyropes along with significant diamond inclusion minerals from diamond bearing chromite, Group 1 ecologite and Lhzerolite sources of diamond. According to the late Dr. John Gurney, Head of the Department of Geochemistry, South Africa, G10-10* and G10-9* composition pyropes are associated with the highest of diamond grades.