CH-55 Kimberlite
*Information in this current blog is based on information obtained up to mid 2018 and should be considered legacy at this time and should no longer be relied upon.*
This kimberlite was discovered using core drilling in the 2011 summer exploration season.
It was found to be diamondiferous and returned significant results.
Discovery news release -- June 2 2011
Excerpt:
"The CH-55 kimberlite is located approximately 16.5 kilometres south of
the CH-17 and CH-51 kimberlites. One core hole inclined at -45 degrees
intersected kimberlite breccia at 51 metres after passing through nine
metres of overburden followed by 42 metres of gneiss. The hole was
terminated at 183 metres after intersecting 108 metres of kimberlite,
followed by 24 metres of gneiss. A second hole, inclined at -60 degrees
is currently being drilled from the same setup. CH-55 has an estimated
surface expression of one hectare, based on the interpretation of
ground geophysical and drill data."
From technical report:
"The CH-55 kimberlite was discovered when two angled holes were drilled from the same setup across a magnetic-low geophysical anomaly. CH-55 is currently estimated to be 0.8 ha in size. A 195.60 kg sample was submitted for caustic fusion analysis and 214 +0.106 mm sieve size diamonds were recovered, including one +1.18 mm sieve size diamond that weighed 0.03 ct."
Images (pages 3,6,7) -- Image PDF
Caustics news release -- Sept 12 2011
It had one stone on the 1.18 mm sieve and an implied grade of 15 cpht.
0.8 hectares is a reasonable size to be included in a mine plan at a later stage.
This will get more work on it as it did turn up a single 0.03 carat stone in a very small core sample.
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