Second Drill Hole Into Geophysical Complex Hits Target
Diamond miner Arctic Star Exploration Corp. (TSXV:ADD) has confirmed the discovery and recognition of the Sequoia Kimberlite Complex within the company’s Daigras Property in Canada.
It was discovered by drilling two holes into a combined EM, magnetic and gravity anomaly that extends for 1km north to south, up to 200m wide.
Buddy Doyle,VP Exploration, said that at the south end of the anomaly is the known Jack Pine kimberlite discovered in the 1990s by drill testing a distinct magnetic anomaly, negatively polarised.
“I was there in the early days of the Lac de Gras kimberlite discoveries managing Rio Tinto’s exploration team. The kimberlite exploration model assumed that kimberlite formed vertical ‘carrot’ shaped bodies,” Mr Doyle said.
“There were hundreds of negatively polarised magnetic lows to be tested so we dropped a drill hole or two to get a sample, assumed they were carrot shape, and moved on. But of course models are a generalisation and we soon found bodies that had complex shapes and we saw examples of multiple kimberlite events forming larger complexes.
“The EM, gravity, and mag signatures at Sequoia suggest this is what we have here. Our drilling has now confirmed that this known kimberlite is only a smaller part of a much larger complex.”
The discovery drill hole DG2021-04 was centred on a gravity and EM anomaly. The second hole was targeted 240m to the north on another part of the gravity anomaly where it bends. It was drilled on land at a bearing of 2950 with a dip of -600, intercepted kimberlite at 31m, and exited at 88m.
Although further drilling of the Sequoia Kimberlite Complex is warranted, in order to test as many drill targets a possible during the spring exploration season the drill is now moving to the Kong target where a distinct EM anomaly exists between the known Kong E and Kong W kimberlites.
The Diagras Property consists of 29 contiguous claims staked by Arctic Star, with an area of 25,595 hectares. The property is in joint venture with Margaret Lake Diamonds whereby Margaret Lake has earned a 60% interest. The property is located in the north-eastern part of the prolific Lac de Gras kimberlite field, 22km NNE of the Diavik diamond mine and 36km east of the Ekati diamond mine in NWT Canada. The Company has verified through research and compilation that the property hosts over a dozen kimberlites, most of them diamondiferous. Arctic Star’s research and compilation of historical data in the public domain confirms that Diagras is a property of merit that deserves additional exploration.
