MOUNT BURGESS MINING N.L - UPDATE ON NXUU DEPOSIT METALLURGICAL AND MINERALOGICAL TEST WORK.
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Release date- 20082019 - On 2 July 2019, the Company announced Sensor Sorter test work results conducted by STEINERT Australia (STEINERT) on ten samples from the Nxuu Deposit.
This test work was conducted on the + 10mm size fraction separated after crushing. An Xray transmission sensor was used to measure atomic density to target dense materials. A 3D sensor was used to determine mineral particle sizes to target densely mineralised zones.
Recent further Sensor Sorter test work was conducted by STEINERT on a composite of that portion of the + 4mm to - 10mm size fraction separated after crushing. This size fraction was then scanned by an Xray transmission sensor.
TEST WORK RESULTS ON THE COMBINED + 10MM AND + 4MM TO - 10MM SIZE FRACTION COMPOSITE
The test work results showed that of the combined mass of the size fractions of + 10mm and + 4mm to minus 10mm from a composite of all ten samples subjected to the test work, an average of 45% of the sample mass was rejected as barren or insignificantly mineralised Quartz Wacke (the host rock of mineralisation), leaving 55% of mineralised Quartz Wacke available for milling and processing.
OUTCOME OF STEINERTS'S SENSOR SORTER TEST WORK RESULTS
The combined results have shown that, through the use of STEINERT's Sensor Sorter process, 45% of insignificantly mineralised or barren Quartz Wacke can be separated and rejected after crushing, thereby significantly reducing milling and downstream treatment processes.
This would result in the following
Significant reduction in capital and treatment costs
Upgrade in pre-concentrated metal grade levels
Reduction in required water consumption
Reduction in Environmental Footprint
THE WAY FORWARD
The sighter test work program, using the STEINERT Ore Sorter, demonstrates an excellent early beneficiation step with the potential to have a significant positive impact on project economics. Mount Burgess now intends to pursue this further where the higher (average and more typical) grades of Zinc, Lead and Silver will be tested. These higher grade domains should provide a stronger signal for the Ore Sorter to deliver further improvement in pre-concentrate grades and recoveries.
SIMPLE PRODUCTION PROCESS OF VANADIUM PENTOXIDE FROM THE NXUU DEPOSIT MINERALISATION
Recent mineralogical test work conducted by ALS Laboratories confirmed that DESCLOIZITE [(PbZn)2VO4] is the host oxide vanadate of Vanadium Pentoxide (V2O5) in the Nxuu Deposit.
The V2O5 can be collected in a flotation concentrate together with Smithsonite (ZnCO3) and Cerussite (PbCO3).
The Nxuu Deposit mineralisation only requires a very simple hydrometallurgical recovery process. This includes dissolving the flotation concentrate in sulphuric acid, followed by solvent extraction using a suitable extractant such as TEHPA, Alamine336, TBP or Cyanex 923.
The Vanadium in the organic phase can then be readily stripped with either acid or soda ash solution and precipitated. The Vanadium precipitate can then be filtered, dried and calcined to a saleable V2O5 product. The solubilised Zn can be extracted through a separate solvent extraction step, with the Pb precipitating as insoluble lead sulphate.
Forward Looking Statement
This report contains forward looking statements in respect of the projects being reported on by the Company. Forward looking statements are based on beliefs, opinions, assessments and estimates based on facts and information available to management and/or professional consultants at the time they are formed or made and are, in the opinion of management and/or consultants, applied as reasonably and responsibly as possible as at the time that they are applied.
Any statements in respect of Ore Reserves, Mineral Resources and zones of mineralisation may also be deemed to be forward looking statements in that they contain estimates that the Company believes have been based on reasonable assumptions with respect to the mineralisation that has been found thus far. Exploration targets are conceptual in nature and are formed from projection of the known resource dimensions along strike. The quantity and grade of an exploration target is insufficient to define a Mineral Resource. Forward looking statements are not statements of historical fact, they are based on reasonable projections and calculations, the ultimate results or outcomes of which may differ materially from those described or incorporated in the forward looking statements. Such differences or changes in circumstances to those described or incorporated in the forward looking statements may arise as a consequence of the variety of risks, uncertainties and other factors relative to the exploration and mining industry and the particular properties in which the Company has an interest.
Such risks, uncertainties and other factors could include but would not necessarily be limited to fluctuations in metals and minerals prices, fluctuations in rates of exchange, changes in government policy and political instability in the countries in which the Company operates.
Other important Information
Purpose of document: This document has been prepared by Mount Burgess Mining NL (MTB). It is intended only for the purpose of providing information on MTB, its project and its proposed operations. It does not represent an investment disclosure document. It does not purport to contain all the information that a prospective investor may require to make an evaluated investment decision. MTB does not purport to give financial or investment advice.
Professional advice: Recipients of this document should consider seeking appropriate professional advice in reviewing this document and should review any other information relative to MTB in the event of considering any investment decision.
Forward looking statements: This document contains forward looking statements which should be reviewed and considered as part of the overall disclosure relative to this report.
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