In February 2020 RJK Explorations (TSXV: RJX.A; OTC: RJKAF) announced that it had discovered the Kon diamondiferous kimberlite sill on its Nipissing project south of Cobalt, Ont. It is now in the midst of a 10-hole drill program to find the source feeder, create a 3D model, and correlate different kimberlite layers to optimize the microdiamond sampling by discrete phases.
Both interbedded volcaniclastic kimberlite breccia and hypabyssal kimberlite are present in cores.
Five holes have been completed and RJK has results. Hole Kon-21-01 cut three phases of kimberlite from 32.5 to 72.1 metres. Diagonal hole 02 extended the kimberlite structure northwest into the magnetic high rimming the main kimberlite discovery; it again cut three phases of kimberlite from 7.1 to 42.1 metres. Hole 04 tested the centre of the kimberlite, finding six phases from 5.8 to 120 metres. Hole 05 was another diagonal to test the kimberlite eastward; it intersected five phases from 94.7 to 250 metres.
Diagonal hole 03 was planned to test a north-south trending magnetic low that cuts the magnetic high rimming the main kimberlite discovery. This hole interested a silicified, pyritized alteration zone from 110 to 130 metres, and gold assays are pending from this hole.
A sixth hole is underway from the rim of the southern magnetic high northward.
RJK has asked two labs to test 12,222.5 kg of kimberlite from seven anomalies in Lorraine township over the last six months. Results are expected at the end of June.