Margaret Lake Diamonds announces Arctic Star’s caustic fusion results have been received, all Kimberlites discovered in 2021 program contain diamonds
Margaret Lake Diamonds announces Arctic Star’s caustic fusion results have been
received, all Kimberlites discovered in 2021 program contain diamonds
VANCOUVER, B.C. / September 29th 2021 / Margaret Lake Diamonds Inc. ("MLD" or the
"Company") (TSXV:DIA) (FKT:M85) (OTC PINK:DDIAF) is pleased to announce its Joint
Venture partner Arctic Star has received all the diamond results from its Spring drilling
program where five new Kimberlites were discovered. 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, Saskatoon,
Saskatchewan with a direct chain of custody. The other Kimberlites were originally sent to
CFM laboratory in Kelowna, however when after three weeks this lab informed Arctic Star
that these samples were behind a prev ious client and that there would be a long delay the
company decided to move the samples to other laboratories. The Birch Kimberlite samples
were redirected to the SRC lab and the Alder and Cedar Kimberlite samples were redirected to
the Microlithics Labor atory in Thunder Bay. The samples arrived intact, with seals and chain
of custody preserved. SRC is an independent laboratory that is SCC accredited, ISO/IEC
17025. Microlithics is also an independent laboratory. The processing methods of these
laboratorie s are similar. The samples are assayed using the caustic fusion process, where up to
8-kilogram samples are fused in a kiln containing caustic soda at temperatures of >500 oC. The
hot residue is then poured through sieves and the remaining material is furth er chemically
treated to reduce the residue to a manageable size. The residues are then observed and the
diamonds are recovered. The labs add unique diamonds to each sample, which are recovered
as part of a quality assurance program. All were recovered fro m these batches.
Sequoia stands out as having the highest diamond count. As previous described in the NR
dated September 9 th and September 15 th, the diamond results at Sequoia hint at a coarser
diamond size distribution, as does the diamond indicator chemistry. The diamond results from
assaying the second half of the DG 2021 05 drill core have not yet been received and will be
reported when at ha nd.
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 Western portion of the
gravity low remains untested. T he above table also lists the published historic diamond results
for the Black Spruce Kimberlite whose counts are lower and con trast to that received from
Birch, Birch has three times the diamond count and this is evidence that it is a separate event
and rock type to the Black Spruce Kimberlite .
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.
The Diagras project is a Joint Venture between Margaret Lake Diamonds Inc. and Arctic Star
and. Arctic Star took over management in early 2021 proposing a $2.1 million budget for the
spring drilling program. DIA elected not to contribute and are diluting their interest.
Qualified Person
The Qualified Person for this news release is Buddy Doyle, AUSIMM, a Geologist that is
employed by and works for Arctic Star with over 35 years’ experience in diamond exploration,
discovery, and evaluation. A Qualified Person under the provisions of National Instrument 43-
101.
Contact Information
Neil Foran
Chief Executive Officer
(604) 681-7735
Forward-Looking Statements
This press release contains forward -looking information or forward -looking statements
(collectively "forward -looking information") within the meaning of applicable securities laws.
Forward-looking information is typically identified by words such as: "believe", "expect",
"anticipate", "intend", "estimate", "potentially" and similar expressions, or are those, which,
by their nature, refer to future events. The Company cautions investors that any forward -
looking information provided by the Company is not a guarantee of future results or
performance, and that actual results may differ materially from those in forward -looking
information as a result of various factors. The reader is referred to the Company's public
filings for a more complete discussion of such risk factors and their potential effects, which
may be accessed through the Company's profile on SEDAR at www.sedar.com .