The Peregrine Diamonds Ltd. 2011 program has two primary objectives:
- Continued exploration focussed on discovering large kimberlites using new targeting information developed from the 2010 discovery of the CH-31 and CH-33 kimberlites. CH-31 is drill-confirmed at greater than five hectares in surface area, and new geophysical interpretations for CH-33 indicate potential for an elongated body with surface area greater than seven hectares.
- Further evaluation of known kimberlites with economic potential by core drilling and/or mini-bulk sampling.
The main work activities approved for 2011 include the following:
- Up to 13,000 metres of core and reverse circulation (“RC”) drilling with the following principle objectives:
- Core and/or RC drilling of high-priority geophysical anomalies with large surface footprints that have been selected from airborne geophysical surveys conducted in 2008 and 2010, as well as priority targets that will be developed from the airborne survey that is currently underway.
- Core drilling of the known high-interest kimberlite bodies to increase the understanding of their size, geology and diamond content.
- Collection of a mini-bulk sample of approximately five tonnes by core drilling from the CH-31 kimberlite. CH-31 is estimated at over five hectares in size and an 840 kilogram microdiamond sample collected in 2010 returned 1.39 carats of commercial size (+0.85 mm) diamonds.
- Collection of a 20 tonne mini-bulk sample from the surface of the CH-28 kimberlite. CH-28 is estimated at two hectares in size and a 239 kilogram microdiamond sample collected in 2010 returned 0.193 carats of commercial size (+0.85 mm) diamonds.
- Completion of a 12,000 line-kilometre RESOLVE heli-borne magnetic-electromagnetic geophysical survey.
- Ground geophysical surveys over anomalies selected from the 2008, 2010 and 2011 airborne geophysical surveys.
- Indicator mineral sampling, ground geophysics and prospecting; 24 of the 50 currently known kimberlites have been discovered at surface by prospecting.
- Initiation of preparations for a multi-kimberlite 2012 bulk sampling program.
- Continuation of environmental baseline studies.
Field work has commenced at Chidliak with the construction of a third exploration camp, named Aurora, located 42 kilometres north of the Discovery Camp, and the initiation of ground and airborne geophysical surveying. Drilling of lake-based targets in the northern portion of the Project is scheduled to commence this week. Lake ice conditions are expected to support on-ice drilling until at least mid-May. The first two drilling locations will be the CH-17 kimberlite and anomaly 165, located 200 metres south of CH-17 and three kilometres north of Aurora Camp. In April and May, a second core drill and an RC rig will be utilized to test targets in the central portion of Chidliak.
Peregrine geophysicists have recently selected 21 geophysical anomalies over two hectares in size for follow-up this year, four of which are interpreted to be greater than 4.5 hectares. Many of these anomalies display magnetic/electromagnetic responses similar to the large CH-31 and CH-33 kimberlites. These anomalies will be evaluated by ground geophysics this winter and priority targets will be drilled this year. The Company also expects to generate additional large targets this spring from the 12,000 line-kilometre RESOLVE heli-borne survey that is currently being flown.