Encouraging Diamond Indicator Chemistry reported from the Arbutus Kimberlite Discovery, Diagras Project, NT 1. A total of 3kg of Arbutus kimberlite was processed at CF Minerals of Kelowna and interpreted by Dr. Chuck Fipke
1
Encouraging Diamond Indicator Chemistry reported from the Arbutus Kimberlite Discovery,
Diagras Project, NT
1. A total of 3kg of Arbutus kimberlite was processed at CF Minerals of Kelowna and
interpreted by Dr. Chuck Fipke
2. He 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.
3. 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.
4. 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.
October 3, 2022 - VANCOUVER, BC / October 3, 2022 / Margaret Lake Diamonds Inc. ("MLD" or
the "Company") (TSXV: DIA) (FKT:M85A) (OTC PINK: DDIAF) is pleased to 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%).
Mr. Patrick Power, President of Arctic Star, commented, "Indicator minerals are an important
adjunct, when first encountering a new kimberlite discovery. Dr. Fipke's results and
interpretation are telling us that:
1. That the kimberlite is multi-phase, with one of the phases having superior chemistry to
the others
2. 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.
3. The chemistry is also permissive for large diamonds.
We provide the full report from Dr Fipke below:
Three small core samples of kimberlite weighing 0.97, 0.81 and 1.22 kilograms were submitted
by Arctic Star Exploration to C.F. Mineral Research Ltd. for extraction, microprobing and
classifying of any contained diamond indicator minerals.
According to Arctic Star the three pieces originated from various parts of the Arbutus kimberlite
in which 143.05 kilograms of kimberlite from two drill holes contained 61diamonds.
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$* clinopyroxenes (Cr diopsides), Di* chromites, G1* eclogitic garnets, and Di* olivines]
means that the indicator minerals recovered match the compositions of indicator minerals
included in diamond, intergrown with diamond or are from diamond bearing xenoliths. About
11,000 of such diamond inclusion indicators from worldwide sources are present in the C.F.
Mineral Research database. The type and numbers of kimberlite indicators in Table 1 suggest
that all three samples may originate from differing kimberlite phases in the same kimberlite.
2
Sample DG-2022-08 weighing 970 gms contained only a single G10* pyrope and a single G1*
eclogitic garnet. However the sample contained 92 Di* chromites and 36 Di* olivines. Moreover,
the sample contained a Di$* 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. We would expect the
kimberlite phase of DG-2022-09A to be loaded with diamonds and additionally contain some
very large diamonds.
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: Dr. Fipke personally owns Arctic Star shares.
Mr. Buddy Doyle, VP Exploration for Arctic Star, also commented. "Our general exporation
strategy is to locate new kimberlite discoveries. If the results of this work is encouraging we
return to the kiberlite and drill more to define its size and get a larger diamond samples. The
Arbutus kimberlite discovery has proven to be diamond bearing, with relatively larger stones
from a small sample. (see news release dated September 14/22 ). This along with the excellent
diamond chemistry reported here, demonstrates that this kimberlite deserves further attention.
Also notable, is that Arbutus lies to the south of the Finlay kimberlite. A historic kimberlite,
discovered in the 1990's, however, the previous workers never made the diamond content
public. We therefore also plan to test this kimberlite in the 2023 exploration program."
3
Qualified Person
The Qualified Person for this news release is Buddy Doyle, AUSIMM, a Geologist with over 35
years of experience in diamond exploration, discovery, and evaluation. A Qualified Person under
the provisions of the National Instrument 43-101. Mr. Doyle has relied on the Technical
expertise of Dr. Fipke for portions of this news release.
The Diagras project is a joint venture between Arctic Star Exploration Corp. (currently 81.5%)
and Margaret Lake Diamonds Inc. (currently 18.5%).
On behalf of the Board
Margaret Lake Diamonds Inc.
"Yari Nieken"
President, Chief Executive Officer, Chairman
Tel: 604.328.0425 | Email: [email protected]
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined
in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy
of this release.
Disclaimer for Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under
applicable securities laws. Forward-looking statements are statements that relate to future, not
past, events. In this context, forward-looking statements often address expected future business
and financial performance, and often contain words such as “anticipate”, “believe”, “plan”,
“estimate”, “expect”, and “intend”, statements that an action or event “may”, “might”,
“could”, “should”, or “will” be taken or occur, including statements that address potential
quantity and/or grade of minerals, potential size and expansion of a mineralized zone, proposed
timing of exploration and development plans, or other similar expressions. By their nature,
forward-looking statements involve known and unknown risks, uncertainties and other factors
which may cause our actual results, performance or achievements, or other future events, to be
materially different from any future results, performance or achievements expressed or implied
by such forward-looking statements. Such factors include, among others, the following risks: the
need for additional financing; operational risks associated with mineral exploration;
fluctuations in commodity prices; title matters; and the additional risks identified in the annual
information form of the Company or other reports and filings with the TSXV and applicable
Canadian securities regulators. Forward-looking statements are made based on management’s
beliefs, estimates and opinions on the date that statements are made, and the Company
undertakes no obligation to update forward-looking statements if these beliefs, estimates and
opinions or other circumstances should change, except as required by applicable securities laws.
Investors are cautioned against attributing undue certainty to forward-looking statements.