Zimtu Capital Corp.

Suite 1450 - 789 West Pender St.
Vancouver, BC V6C 1H2
Phone: 604.681.1568
Fax: 604.681.8240
Toll Free: 1.877.377.6222

Archive for August, 2014

Equity Holding Commerce Resources Updates Metallurgical Flowsheet and Outlines Next Steps for the Ashram Rare Earth Deposit in Northern Quebec

Thursday, August 28th, 2014


Commerce Resources Corp. (TSXv: CCE) released an update on their advances in metallurgy for the Ashram Rare Earth Deposit.

Overall, the company has produced a mineral concentrate grading 43.6% TREO at a 71% recovery rate, representing a mass reduction of 97%.

Highlights from this update include:

1.  Bench scale test confirmation of the mineral processing flowsheet with demonstrated reproducibility of flotation, HCL leach, and WHIMS components.

◦   Additional mineral concentrate of 41% TREO at 70% recovery and 3% mass pull was produced during repeat testing (See news release December 4, 2013 which details first production of a 44% TREO mineral concentrate at 71% recovery).

2.  A conceptual hydrometallurgical flowsheet was designed, and partially tested at bench scale, to produce a representative mixed rare earth oxide (REO) / (REC) as a potential saleable product.

◦   Demonstrated sulphation roast and pot digestion tests on high-grade mineral concentrate (>40% TREO), to put REE into solution, with staged TREO recoveries of 87% and 93%, respectively, at low acid consumptions.

◦   Demonstrated removal of deleterious Th from the circuit using industry standard methods.

◦   Demonstrated that flotation tailings have significant capacity to neutralize leach liquor, suggesting there may be no process need for costly lime as a neutralizing agent.

3.  UVR-FIA and Hazen Research reports (which include high level data review of test work to date) provide recommendations and outline optimization testing for the next phase of work.

To date, no optimization testing has been completed (e.g. temperature, pH, reagent dosage, etc.). This suggests that significant scope remains for increased recovery. The next steps of optimization work will proceed in parallel with increasing focus on the production of a variety of potentially saleable end-product(s), using representative mineral concentrate feed material, in preparation for a full-scale pilot plant to be run before completion of the Prefeasibility Study.

View a photo gallery from some of the exploration activities at the Eldor Rare Earth Project:

Property Photo Gallery

Zimtu Capital is encouraged by the progress Commerce Resources is making.


Disclosure:  Zimtu Capital Corp. owns 3,584,178 common shares of Commerce Resources (as at Aug 28, 2014). For more information on Zimtu Capital and our equity holdings, visit

Entries (RSS) and Comments (RSS).