(via TheNewswire)
A total of 3kg of Arbutus kimberlite was processed at CF Minerals of
Kelowna and interpreted by Dr. Chuck FipkeHe reports that Arbutus Kimberlite should have excellent diamond potential with some of the best chemistries he has seen, with abundant indicators in a relatively small sample.
Dr.
Chuck Fipke , created the Canadian diamond industry when his work led to the discovery of the Ekati diamond mine in the Lac de Grad kimberlite field.The lab has a large global database of minerals that are inclusions in diamonds. These have unique chemistries. Many of the indicators from Arbutus exhibited similar chemistry.
Mr.
That the kimberlite is multi-phase, with one of the phases having superior chemistry to the others
The chemistry is some of the best
Dr. Fipke has seen when compared to his global database of diamond inclusions, the results here have a higher percentage and are more abundant by weight of samples that he has encountered previously.The chemistry is also permissive for large diamonds.
We provide the full report from
Three small core samples of kimberlite weighing 0.97, 0.81 and 1.22 kilograms were submitted by Arctic Star Exploration to
According to
A summary sheet of the diamond indicators recovered, microprobed and classified is given as Table 1. An asterisk "*" present in a column type/header [G10* pyropes, Di*G9/11 pyropes, Di$* clinopyroxenes (Cr diopsides), Di* chromites, G1* eclogitic garnets, and Di* olivines] means that the indicator minerals recovered match the compositions of indicator minerals included in diamond, intergrown with diamond or are from diamond bearing xenoliths. About 11,000 of such diamond inclusion indicators from worldwide sources are present in the
Sample DG-2022-08 weighing 970 gms contained only a single G10* pyrope and a single G1* eclogitic garnet. However the sample contained 92 Di* chromites and 36 Di* olivines. Moreover, the sample contained a Di$* 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
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.
Unfortunately only four picroilmenites were recovered from all three samples submitted. Picroilmenites do not actually form with diamond but form from the kimberlite magma itself. When 40 to 50 picroilmenites are present it is possible to predict whether or not the kimberlite magma may have oxidized diamonds thus destroying small diamonds but leaving large diamonds only partially oxidized. Of course diamonds encapsulated in xenoliths would be insulated against an oxidizing kimberlite magma thus be recovered unoxidized.
If more of the DG-2022-09A phase is present we would expect correspondingly high diamond grades. All three samples contain Lherzolite sources of diamond in which large diamonds are expected with or without small diamonds. Overall, the DG-2022-09A phase Di* indicator results are the best C.F. Mineral have ever encountered.
Note:
Mr.
Qualified Person
The Qualified Person for this news release is
The Diagras project is a joint venture between Arctic Star Exploration Corp. (currently 81.5%) and
On behalf of the Board
"Yari Nieken"
President, Chief Executive Officer, Chairman Tel: 604.328.0425 | Email: ynieken@gmail.com
Neither the
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