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Home > News > Bonterra's Moroy Bulk...

Bonterra's Moroy Bulk Sample Generates 9% Higher Head Grade than Modeled; 1,308 Ounces of Gold Produced

Dec 24, 2020


Bonterra Resources Inc. is pleased to announce the results from its bulk sampling program at the Moroy Project previously announced on September 15, 2020. The results from processing 11,093 tonnes extracted from the M1 structure confirmed the mineral resources estimated by SGS Canada Inc. ("SGS") in May 2019. The average mill head grade obtained in the Bulk Sample was 3.87 g/t, which is 9.3% higher than the measured resources grade of 3.54 g/t from the block model calculated by SGS from the same extracted sector of the M1 structure. The results from the Bulk Sample confirms the validity of the geological model, and the resources calculation performed by SGS.

Highlights:

  • Higher than modeled average head grade. The average mill head grade was 3.87 g/t Au for the Bulk Sample, which is 9.3% higher than the predicted Au grade from the geological model based on the diamond drilling information in the area.
  • Solid recovery rates. Average mill recovery for the gold at 94.9% which compares well with the 96% achieved with higher grade material from the Bachelor Mine (fixed tail). 
  • Total bulk sample produced better than modeled grades resulting in the production of 1,308 oz., all milled at the Company's own Bachelor Mill.

Pascal Hamelin, President and CEO commented: "It is very encouraging to see the results from the Bulk Sample meet or exceed what was predicted in the geological model and the mineral resources estimated by SGS in May 2019. These results have increased our confidence in the geological model, the grade and the mill recovery of the Moroy deposit."

Mining 

After the development of a haulage track drift, and a drift in the mineralization on level 11, which is 550 metres ("m") below surface, two conventional raises were developed over a length of 30 m allowing the development of two conventional sub-levels spaced at 15 m.

The Company used the mining method of drilling and blasting long holes from the sub-levels. Holes ranging in length from 15 to 18 m were drilled with a diameter of 64 millimetres (2.5 inches) and showed very little deviation.

The drilling pattern was the same throughout the sampling, however, the blasting technique was adjusted based on the results obtained in order to find an optimal fragmentation method suitable for conventional remotely operated equipment while minimizing the powder factor to spare the walls.

Processing

Staggered over 40 days in October and November 2020, the Bachelor Mine mill processed 11,093 tonnes with an average grade of 3.87 g/t. With an average recovery of 94.9%, the Bulk Sample allowed the extraction of 1,308 ounces of gold.

The Bachelor Mill operates using the carbon-in-pulp (CIP) process.



Tags: Quebec / Exploration / Gold / All Articles