Preliminary tests at TOMRA in Germany indicate the mineralization at Iska Iska is amenable to “ore-sorting” with removal of at least 40% of the waste in the Polymetallic Domain and up to 80% in the Tin Domain which would substantially increase concentrator feed grades as well as reduce future operating costs and significantly lower the cut off grades (COG) for the pending mineral resource estimate (MRE).
Positive “ore-sorting” results were obtained from composite samples of both the tin (Sn) and polymetallic (Ag-Zn-Pb) mineralization domains in the Santa Barbara deposit indicating its wide applicability throughout the entire deposit.
Further metallurgical studies conducted by Wardell Armstrong International on a composite sample of the tin mineralization has improved tin concentrator recovery to 50%. This recovery is un-optimised and has been achieved using a mixture of Multi Gravity and tin flotation techniques which are specifically designed to recover the finer grained cassiterite.
The concentrator could produce an approximately 5%Sn concentrate grade amenable to the tin fuming process that ultimately could produce a 60-70%Sn concentrate for smelting.
The level of metallurgical and pyrometallurgical work that has been conducted is exceptionally high for an inaugural MRE but is justifiable due to the significance of this large potentially open pittable tin and polymetallic resource.
The additional metallurgical/mineralogical knowledge will enable Eloro to rapidly move towards a preliminary economic assessment (PEA).
TORONTO, July 26, 2023 (GLOBE NEWSWIRE) -- Eloro Resources Ltd. (TSX: ELO; OTCQX: ELRRF; FSE: P2QM) (“Eloro”, or the “Company”) is
pleased to announce major advances on metallurgy for the Iska Iska silver-tin polymetallic project in the Potosi Department of southern Bolivia. These tests were directed by Mike Hallewell, C.Eng., Eloro’s Senior Strategic Metallurgist and a qualified person (QP) as defined by National Instrument 43-101 (NI 43-101). in consultation with Micon International Limited Principal Metallurgist, Richard Gowans, P.Eng., an independent QP.

Work by the Eloro geological team at Iska Iska led by Dr. Bill Pearson, P.Geo., Executive Vice President of Exploration and Dr. Osvaldo Arce, P.Geo., Manager of Minera Tupiza, indicates that Santa Barbara is essentially two major deposits in one as shown in Figure 1. Tin (Sn) mineralization with silver (Ag) dominates in the western and deeper portions of the deposit (Tin Domain) while in the eastern and southern shallower parts of the deposit, polymetallic silver-zinc-lead (Ag-Zn-Pb) mineralization predominates (Polymetallic Domain). The overall deposit as presently drilled extends more than 1,200m along strike, is up to 800m wide and extends to a depth of at least 1,000m with mineralization open in all directions.

Tom Larsen, CEO of Eloro, said: “These positive metallurgical tests, particularly the “Ore-sorting” tests at TOMRA, have a major positive impact on the potential future production at Iska Iska. For this reason, and in consultation with our independent consultants, Micon International, we deferred completion of the inaugural MRE until these tests were completed and the results could be fully incorporated into the final MRE which is now expected to be released in latter August.”

Mike Hallewell, C.Eng, Eloro’s Senior Strategic Metallurgist commented: “The level of metallurgical and pyrometallurgical work that has been conducted thus far at Iska Iska is exceptionally high for an inaugural MRE but is justifiable due to the significance of this large potentially open pittable tin and polymetallic resource. This additional metallurgical/mineralogical knowledge will enable Eloro to rapidly move towards a preliminary economic assessment (PEA).”

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