Sampling by Angkor Gold Corp has resulted in discovery of a 2sqkm gold anomaly on its 100%-owned Banlung tenement in Cambodia. Visible gold has been observed in 83% of samples from the anomaly area.
Systematic soil sampling of 12,550 termite mounds in a 6.8km x 8.4km grid at 400 metre grid spacing covering the Banlung Intrusive Complex has highlighted a large anomaly with rounded to angular visible gold grains in 26% of the total samples collected in the survey.
That percentage jumps to visible gold in 83% of the samples when defined by the anomalous cluster of sample sites in the 2sqkm area of interest highlighted in the mid-southeast of the complex.
Angkor’s operations vice-president John Paul Dau says, “What makes these results meaningful are the shape of the gold, the size of the gold anomaly, and its relation to the rest of Okalla prospect. It’s big - there is significant visible gold, and we are close to the source.”
The Okan fault to the southeast ties this anomaly and the Okalla prospect mineralization to the same regional system structure. Airborne magnetic, field rock samples, surface mapping and the soil geochemistry results indicate that the gold anomaly is most likely associated with a strongly fractured, structurally controlled system within the Banlung Intrusive Complex. The Banlung complex, initially thought to be a single homogenous intrusive until very recently, was mapped by both French geological survey, Bureau de Recherches Géologiques et Minières (BRGM) and Russian geological survey geologists in the 1970s and1990s as a single unit. The Okalla West prospect has been proven by Angkor geologists to be a multi-phase intrusive system, both structurally and mineralogically, making it far more prospective than earlier information of the area would suggest.
“Our extensive first pass soil geochemical analysis of the area has yielded solid results, not commonly expected with a gabbro style intrusive,” said Angkor senior geologist Kurtis Dunstone. “And given the significant size of the area, we are looking forward to this season’s work program to better define our understanding and full extent of the anomaly.”
“This large gold anomaly warrants further investigation and a work program including infill geochemistry, a ground gravity survey and detailed field mapping has been earmarked for the start of the 2015/16 field season, after the monsoon rains,” says John Paul Dau. “Early indications are that we are looking at a good “plumbing system” as evidence for structurally controlled mineralization is present.
“In addition to the gold results, the soil survey has indicated multiple element anomalies including copper and nickel. While the copper and nickel anomalies are interesting and worth following up on their own accord, at this stage, the gold anomaly is Angkor’s primary focus.
“In the event of good field investigation results, an inexpensive and systematic Reverse Air Blast (RAB) drilling program will be required to further define the gold mineralization prior to RC or diamond drilling.”
The connection and relevance of the nickel and copper anomalism in relation to the gold anomaly in the intrusive complex, along with coincident nickel, cobalt, chrome and vanadium, will be thoroughly investigated by Angkor geologists in conjunction with a postgraduate academic investigation conducted by the Institute of Technology of Cambodia (ITC), due to get under way at the start of the field season.
This investigation is anticipated to accelerate Angkor’s understanding of the intrusive complex and wider mineral potential. The postgraduate program is jointly sponsored by Angkor Gold Corp and Japan International Cooperation Agency (JICA).