Noble Mineral recovers 50-52% of Holdsworth gold

Nov 2, 2020

2020-11-02 08:47 ET – News Release

Mr. H. Vance White reports

NOBLE MINERAL EXPLORATION – EXPLORATION UPDATE: HOLDSWORTH OXIDE SAND PROJECT PRELIMINARY METALLURGICAL RESULTS

Noble Mineral Exploration Inc. has received metallurgical test results from Montreal-based Dundee Sustainable Technologies Inc. on gold and silver recoveries from the Holdsworth oxide sands property, located 25 kilometres northeast of Wawa, Ont., in Corbiere and Esquega townships.

A 20 kg oxide sand sample recently taken from the Property and assaying 7.93 g/t Au and 61.3 g/t Ag was submitted to Dundee for metallurgical testing using its patented CLEVR Process(TM) “CLEVR”.

The oxide sand material was prepared (ground, mixed, homogenised & split) prior to being concentrated by flotation. Two distinct flotation tests were conducted and generated concentrate products containing 35.84 g/t Au (Flotation #1) and 33.19 g/t Au (Flotation #2). Gold recoveries from the flotation stage ranged between 50% and 52% with mass pulls of 8.6% (Flotation #1) and 10.7% (Flotation #2).

The Flotation #2 concentrate was submitted to both an oxidation and acid leaching pre-treatment prior to the gold and silver extraction. Using CLEVR, 97.7% of the gold in the concentrate was recovered and 43.2% for silver.

 
 ---------------------------------------------------------------------
 |                                 |Concentration in ppm (Mass in mg)|
 |-------------------------------------------------------------------|
 |Sample                           |Ag              |Au              |
 |-------------------------------------------------------------------|
 |NBL-BS-F2-C (Flotation)          |286.95 (43.1)   |33.19 (4.98)    |
 |-------------------------------------------------------------------|
 |NBL-BS-F2-C-OX(calcine)          |336.4 (42.7)    |38.35 (4.87)    |
 |-------------------------------------------------------------------|
 |NBL-BS-F2-C-OX-LA (residue)      |285.1 (25.1)    |53.82 (4.74)    |
 |-------------------------------------------------------------------|
 |NBL-BS-F2-C-OX-LA-CL (residue)   |164.41 (14.25)  |1.26 (0.109)    |
 |-------------------------------------------------------------------|
 |Metal Extraction using CLEVR in %|43.2%           |97.7%           |
 ---------------------------------------------------------------------

Noble’s next step would be to optimize the flotation process in order to further increase precious metal recoveries with the goal of generating a marketable gold-silver rich concentrate and/or substantially reduce the amount of material that will have to be pre-treated and leached.

Vance White is quoted as saying: “The test work conducted by DST demonstrated that gold, from a flotation concentrate, may be leached, efficiently, post oxidation and acid leaching pre-treatment.

We are very pleased that we can recover the gold from the flotation concentrate in the high 90% range and silver in the 40% range from the Holdsworth oxide sands and since the sulphur content in the samples that were tested is very low, the extraction process would not likely generate acid in the tailings. Dundee classifies this concentrate as a very clean concentrate.”

Randy S.C. Singh P.Geo (ON), P.Eng (ON) VP- Exploration & Project Development a “qualified person” as such term is defined by National Instrument 43-101 has verified the data disclosed in this news release, and has otherwise reviewed and approved the technical information in this news release on behalf of Noble.

About Noble Mineral Exploration Inc.:

Noble Mineral Exploration Inc. is a Canadian-based junior exploration company which, in addition to its shareholdings in Canada Nickel Company Inc., Spruce Ridge Resources Ltd. and MacDonald Mines Exploration Ltd., and its interest in the Holdsworth gold exploration property in the area of Wawa, Ontario, holds approximately 72,000 hectares of mineral rights in the Timmins-Cochrane areas of Northern Ontario known as Project 81. Project 81 hosts diversified drill-ready gold, nickel-cobalt and base metal exploration targets at various stages of exploration. More detailed information is available on the website at www.noblemineralexploration.com .

We seek Safe Harbor.

https://noblemineralexploration.com/