CH33 Kimberlite (PHASE 3)

CH-33 Kimberlite

This kimberlite was discovered via surface prospecting in the summer of 2010.
Caustic results has determined this kimberlite to be diamondiferous and it was determined were significant to warrant future work.
This included several drillholes.

Size is the biggest factor in this kimberlite -- ~5 hectares

Excerpt: (August 23, 2010)

"The CH-33 kimberlite was discovered when abundant kimberlite boulders and cobbles were discovered associated with a magnetic low anomaly with an estimated surface expression of at least two hectares as determined by airborne geophysics. The anomaly representing the kimberlite is partially covered by a lake. Both magmatic and volcaniclastic kimberlite with limestone xenoliths are present on surface at CH-33. "

Caustics results #1: (Jan 13, 2011)

"As announced on August 23, 2010, the CH-33 kimberlite was discovered when abundant kimberlite boulders and cobbles were identified associated with a magnetic low anomaly having an estimated surface expression of at least two hectares as determined by airborne geophysics. The anomaly representing the kimberlite is partially covered by a lake. Both magmatic and volcaniclastic kimberlite with limestone xenoliths are present on surface at CH-33.

The 473.8 kilogram surface sample was collected from the two different kimberlites phases at two separate locations. The one diamond larger than the 1.18 mm sieve size was classified by the SRC as being an off-white, transparent tetrahexahedron weighing 0.024 carats. Further investigation of this kimberlite, including ground geophysics and drilling, is anticipated this year."

In the magmatic portion, a 248.3 kg sample produced  103 diamonds and just missed the commercial 0.85 mm sieve. The volcaniclastic portion, a 225.5 kg sample produced 47 diamonds and one of the diamonds sat on the 1.18 mm sieve, which is equivalent to a 10 cpht grade for that portion.


Caustic results #2: (October 27, 2011)


"As announced on August 23, 2010, the CH-33 kimberlite was discovered by prospecting in an area of abundant kimberlite boulders and cobbles. The 397.7 kilogram sample reported here was collected from three angle core holes that were drilled across the kimberlite this year. Based on the interpretation of drill and geophysical data, CH-33 has an estimated surface expression of five hectares."

The newer caustics used a 397.7 kg sample and came back with 55 stones with none of them sitting on the commercial sieve.


Excerpt: (from the 2015 technical report)

"The CH-33 kimberlite was discovered when abundant kimberlite boulders and cobbles were
identified associated with a magnetic-low anomaly having an estimated surface expression of
at least 5 ha, as determined by airborne geophysics. The anomaly representing the kimberlite
is partially covered by a lake. Both CK and VK with limestone xenoliths are present on surface
at CH-33. A 473.80 kg surface sample was collected from the two different kimberlites phases
at two separate locations and a total of 150 +0.106 mm sieve size diamonds was recovered
including one +1.180 mm sieve size diamond, which was classified as being an off-white,
transparent tetrahexahedron weighing 0.02 cts."

An image of the CH-33 is located in this PDF -- Chidliak PDF - Images
It is obvious that CH-33 is very complex and 3 drillholes in a 5 hectare kimberlite is not very much.

In less than 1 tonne of total material one of the stones did land on the 1.18 mm commercial sieve.

This is a very large kimberlite that will take a lot more information to even consider removing from the mine plane. At the same, it would be very costly, at this point, to even consider a mini-bulk sample for the unknown results.

This kimberlite will get prime attention once Chidliak moves into the next phase, including an onsite DMS unit.

This kimberlite will go into Phase 3 at this point because of the shear size, the lack of drilling, the single commerical stone.











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