July 25, 2016 – Vancouver, BC, Canada. – Dunnedin Ventures Inc. (TSXV:DVI) is pleased to report the identification of new diamond-bearing kimberlite targets through till sampling at the Kahuna project. Till sampling results include identification of potential for:
Dunnedin’s CEO Chris Taylor said, “Using methods pioneered by our advisor Dr. Chuck Fipke and previously applied at Ekati, we have identified a number of new areas that are sourcing high quality diamond indicator minerals. With the success of the 2015 test program, Dunnedin plans to expand its sampling over larger areas of the property to build, for the first time, an accurate picture of how many potential diamondiferous kimberlite sources are in fact present at Kahuna.”
2015 Till Sampling Program
In collaboration with its technical advisor Dr. Charles Fipke and director Mr. Chad Ulansky, the Company completed a glacial till orientation test sampling program in summer 2015, comprising 118 samples. Glacial till sampling recovers kimberlite indicator minerals (‘KIMs’) that were eroded from kimberlites by glaciers and deposited “down-ice”. This creates a train of positive till samples that can be tracked back to their original source. It is used extensively in the Canadian Arctic as a primary exploration tool leading to most major diamond discoveries, one of the most famous examples of which is Ekati.
Dunnedin’s test program utilized the same sampling and mineral ranking techniques as applied at Ekati, which can predict the potential of kimberlites to host diamonds with a high degree of confidence. The ranking employs proprietary mineral chemistry filters developed at CF Mineral Research Ltd. (“CFM”) under the direction of Dr. Fipke. Information on the sampling and ranking protocols are provided on Dunnedin’s web site atwww.dunnedinventures.com.
2015 Till Results
Historically, eighteen kimberlite pipes were drill-confirmed at the Kahuna project, along with a large number of kimberlite dikes. During 2015, Dunnedin ranked historical KIM data through the CFM filters, identifying 29 new target areas, of which ten were tested with new sampling. All returned KIMs in tills down-ice from the targets, supporting the presence of kimberlite, while eight of the ten target areas contain Diamond Indicator Minerals (‘DIMs’). DIMs have specific chemistry that is observed in mineral inclusions inside of diamonds, and their presence in tills is strongly diagnostic of the diamond-bearing potential of the source kimberlite and is therefore prioritized by the CFM filters.
Results of Dunnedin’s 2015 program include:
A property-scale map of target areas and DIM counts is presented below, along with a summary table of results. Maps of each new target area will be posted to the Company’s web site along with detailed DIM results.
Given the success of the pilot-scale till sampling program, the Company’s advisor Dr. Fipke has suggested a property-scale program should now be undertaken in order to identify all potential diamond sources. The broader till sampling program is slated to begin in August 2016 and will progress in stages contingent upon results.
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