Q-2 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 is another kimberlite found on the adjacent Qilaq property.
This was discovered during the 2010 field season by surface prospecting.
Discovery news release - Aug 5 2010
Excerpt:
"The Q2 kimberlite is located approximately four kilometres south of the
Q1 kimberlite and outside of the 2010 airborne geophysical survey. Q2
was discovered through the identification of kimberlite boulders by a
field crew that was collecting a follow-up till sample. Subsequent
prospecting led to the discovery of two kimberlite outcrops within a
surface depression that is more than 80 metres in diameter. At least
two phases of kimberlite were identified. One phase is described as
being magmatic without limestone xenoliths and the other phase has
coarser grained olivine and KIMs and contains limestone xenoliths. Both
phases contain olivine, picroilmenite, pyrope garnet and chrome
diopside macrocrysts."
Images (pages 4,5,6) -- Images PDF
Caustic results -- Oct 6 2010
A 241.5 kg sample yielded 253 diamonds and one on the 1.18 sieve. A 0.05 carat diamond.
"The diamond in the Q2 sample that is larger than the 1.180 mm sieve size
is classified by the SRC as a 0.05 carat white/colourless, transparent
distorted crystal."
Images 2 (pages 6,7,8)-- Images 2 PDF
The caustics are significant enough to warrant more work in the future. An implied grade of 20 cpht and the surface outcrop is enough to get a small bulk sample completed once full mining at Chidliak is happening. Of note, there are 2 distinct phases. The surface samples were probably a mixture of both. One phase may end up with higher grade than the other.
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