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Amex Exploration announces 95% gold recovery from Perron

Mar 18, 2024

Amex Exploration Inc. is pleased to report the metallurgical test work from the Denise, Gratien, Grey Cat and Team gold zones. The overall gold recoveries achieved (gravity + flotation + leaching) tests showed excellent recovery > 95% in all samples and > 98% on high-grade samples. 

As a reminder, on November 11, 2020, Amex reported metallurgy results from High Grade Zone (HGZ), where all three composites returned better than 99% gold recovery using a simple flowsheet. Both low and high-grade composites were tested for all zones. Metallurgical work was completed by SGS Canada Inc., a leader in metallurgical and analytical studies.

Jacques Trottier, PhD, Executive Chairman of the Board of Amex Exploration commented, "This metallurgical work is important data for the upcoming Preliminary Economic Assessment study that we plan to release in the coming months. I am pleased to see such incredibly high gold recoveries from each of our major gold zones defined to date. Better than 95% gold recovery means our ore is easily processable at virtually every mill in the Abitibi, providing us with additional production optionality as we consider various economic scenarios for mining at Perron."

The following sections are extracts from the test work obtained from SGS Laboratories, which have been verified by authorized metallurgists.

Sample Preparation

Thirteen composites' samples of half core were delivered. Three of the first samples (Grey Cat Zone) were combined to have more material for the test program, then reducing the composites samples for tests to eleven (Table 1). Each sample was stage crushed with a combination of jaw, cone and roll crusher to 100% passing 6 mesh. The sample was homogenized, and a 10 kg sub-sample was rotary split for bond ball mill work index testing (BWI) and the remainder was crushed to 100% passing 10 mesh. The sample was homogenized, and rotary split into 10 kg test charges and a 1 kg head assay charge. 

Head Characterization

Gold Analysis by Screened Metallics

The 1 kg charges from each sample were submitted for gold analysis using the screened metallics protocol. This method is recommended when the ore is suspected to contain coarse, gravity recoverable gold. The method involves several stages of pulverizing and screening the pulverized sample at 150 mesh (106 µm) until approximately 20-30 g of material remains in the screen oversize. The screen oversize and duplicate samples of the final combined screen undersize are submitted for chemical analysis and the head assay of the sample calculated from the relative distribution of the screened fractions. The results shown in Table 2 below indicate gold grades ranging from 0.46 g/t to 11.7 g/t, and high gravity recoverable gold, greater than 15% (favorable for gravimetric circuit) for all samples except one sample.

About Amex

Amex Exploration Inc. has made significant gold discoveries on its 100% owned high-grade Perron Gold Project located ~110 kilometres north of Rouyn-Noranda, Quebec, consisting of 117 contiguous claims covering 4,518 hectares. The project is well-serviced by existing infrastructure, on a year-round road, 10 minutes from an airport and just outside the town of Normétal (~8 km). In addition, the project is in close proximity to a number of major gold producers' milling operations. The project host both bulk tonnage and a high-grade gold style mineralization. Since January 2019, Amex has intersected significant gold mineralization in multiple gold zones and discovered copper-rich VMS zones.

Tags: Quebec / Operational Updates / Gold / All Articles