North of 60 Mining News - The mining newspaper for Alaska and Canada's North

Pebble Partnership copper gold molybdenum mine project Alaska Northern Dynasty NAK NDM

Excellent recoveries for Herbert Gold

 

Last updated 10/26/2018 at 5:09am

High grade gold exploration project north of Juneau Southeast Alaska

Grande Portage Resources Ltd.

A sample collected from two holes drilled into Deep Trench Vein averaging 26.82 g/t gold and 33 g/t silver were used for metallurgical analysis of Herbert Gold mineralization.

Grande Portage Resources Ltd. Oct. 15 said recent metallurgical testing shows excellent gold recoveries from samples of the mineralized veins at the company's Herbert Gold project in Southeast Alaska.

Samples collected from two different veins at Herbert Gold – Deep Trench and Goat – returned higher than 97 percent gold recoveries using either gravity-floatation or whole-ore cyanidation gold extraction techniques.

One sample taken from a 1.12-meter channel cut perpendicular across the Goat Vein outcrop averaged 129.02 grams per metric ton (3.77 ounces per metric ton) gold and 68 g/t (1.97 oz/t) silver.

Gravity-floatation recovered 99.5 percent of the gold and 98.7 percent of the silver from this high-grade sample. Whole-ore cyanidation recovered 99.6 percent of the gold and 94.4 percent of the silver.

The second sample collected from two holes drilled through the Deep Trench Vein averaged 26.82 g/t (0.78 oz/t) gold and 33 g/t (0.96 oz/t) silver.

Gravity-floatation recovered 97.7 percent of the gold and 90.6 percent of the silver from this lower grade sample. Whole-ore cyanidation recovered 98.4 percent of the gold and 81.5 percent of the silver.

High grade gold exploration project north of Juneau Southeast Alaska

Grande Portage Resources Ltd.

A sample taken from this outcrop of the Goat Vein averaged 129.02 grams per metric ton gold and 68 g/t silver.

"These metallurgical results are a very important development for our project," said Grande Portage Resources CEO Ian Klassen. "The combined gravity and flotation recovery of gold averaging 99 percent of the higher-grade and greater than 97 percent of the lower-grade material and greater than 90 percent of the silver are an outstanding feature to what makes the Herbert look so attractive. These results represent a significant milestone for the company in its advancement of the project."

Herbert Gold hosts 1.1 million metric tons of indicated resource averaging 7.25 g/t (267,950 oz) gold; and 423,200 metric tons of inferred resource averaging 6.04 g/t (82,200 oz) gold, according to a resource calculation completed earlier this year.

–SHANE LASLEY

 

Reader Comments
(0)

 
 

Powered by ROAR Online Publication Software from Lions Light Corporation
© Copyright 2018