Last checked at 26 Sep 2019 11:00
Jangada Mines plc / EPIC: JAN.L / Market: AIM / Sector: Mining
26 September 2019
Jangada Mines plc ('Jangada' or the 'Company')
Met Tests Demonstrate High Grade Vanadium Recoveries
Jangada Mines plc, a natural resources company, is pleased to announce encouraging initial results of Davis Tube Recovery ('DTR') tests on vanadium-bearing titanomagnetite samples from its 100%-owned Pitombeiras Vanadium Project ('Pitombeiras') in Brazil.
Highlights
·; Initial DTR tests over two drill samples demonstrate that the magnetite hosted vanadium mineralisation responds very well to magnetic separation
·; Mass recovery of magnetic fractions from two samples were 59% and 62% with concentrate grades greater than 1.2% V2O5and 95% Fe2O3. High TiO2 grade concentrate (> 30%) was obtained on the non-magnetic fraction.
·; Results also establish that the magnetic recoveries produce a low SiO2 and low Al2O3 product
·; Significant upgrades of the Fe and V2O5 content confirm that the magnetite is a Fe-V complex amenable to magnetic separation yielding a product of potentially economic grades
A JORC (2012) compliant CPR is already underway on Pitombeiras, which is expected to be completed by the Company during October 2019. The initial results from the DTR tests will form part of the basis of this report.
Brian McMaster, Chairman of Jangada, said: "These preliminary Davis Tube Recovery results are highly encouraging. The ore's response to magnetic separation is very impressive and with such high grades being returned we are extremely encouraged to continue the test work on a larger scale. Additional metallurgical tests are planned to be performed including larger bulk samples collected from the current known magnetite zone"
Further Information
The Company has received initial results from DTR tests that were carried out by SGS Geosol laboratory, located in Belo Horizonte, Brazil. These demonstrated that the vanadium-bearing magnetite samples from Pitombeiras respond very well to magnetic separation and produce magnetic fractions rich in vanadium and iron and non-magnetic fractions enriched in titanium, which is a typical characteristic of Vanadiferous Titanomagnetite ("VTM") deposits, whereby vanadium is closely associated with magnetite concentrations and titanium associated with ilmenite.
DTR tests are considered to be a suitable simulation of industrial wet magnetic separation, which is currently applied at about 90% of operations globally, whereby the magnetic separation is used to concentrate ore before milling, roasting, leaching, precipitation and fusion to produce a saleable vanadium flake.
The mass recovery of the magnetic fractions from two samples were 59% and 62% with vanadium grades yielding 1.26% and 1.23% V2O5 plus 95.4% and 94.2 Fe2O3, respectively. The non-magnetic fraction returned enriched in titanium dioxide with 33.8% and 33.7% TiO2.
The results also establish that the magnetic recoveries produce a low SiO2 and low Al2O3 product. Significant upgrades of the Fe and V2O5 content confirm that the magnetite is a Fe-V complex amenable to magnetic separation yielding a product of potentially economic grades.
Davis Tube Recovery (DTR) Test Results:
Chemical Analyses | |||||||||||||||
Sample ID | Mass (g) | V2O5 % | SiO2 % | AI2O3 % | Fe2O3 % | CaO % | MgO % | TiO2 % | P2O5 % | Na2O % | K2O % | MnO % | LOI % | FeO % | |
Sample-02 Magnetic fraction | 17.7 | 1.26 | 0.56 | 1.84 | 95.4 | 0.02 | 0.54 | 3.0 | 0.01 | 0.10 | 0.01 | 0.10 | -2.86 | 31.29 | |
Sample-02 Non-Magnetic fraction | 12.3 | 0.14 | 7.39 | 6.31 | 45.3 | 0.26 | 5.95 | 33.8 | 0.08 | 0.10 | 0.02 | 0.60 | 1.17 | 30.12 | |
Sample-02 Feed | 30.0 | 0.80 | 3.35 | 3.67 | 74.9 | 0.12 | 2.75 | 15.6 | 0.04 | 0.10 | 0.01 | 0.30 | -1.21 | 30.81 | |
Sample-03 Magnetic fraction | 18.5 | 1.23 | 0.92 | 2.33 | 94.2 | 0.06 | 0.81 | 3.8 | 0.01 | 0.10 | 0.01 | 0.11 | -2.78 | 31.26 | |
Sample-03 Non-Magnetic fraction | 11.6 | 0.14 | 8.91 | 6.47 | 43.6 | 1.00 | 5.94 | 33.7 | 0.11 | 0.12 | 0.03 | 0.55 | -0.33 | 30.12 | |
Sample-03 Feed | 30.0 | 0.81 | 4.00 | 3.92 | 74.7 | 0.42 | 2.79 | 15.3 | 0.05 | 0.11 | 0.02 | 0.28 | -1.84 | 30.82 | |
Distribution | ||||||||||||||
Sample ID | Mass (g) | V2O5 % | SiO2 % | AI2O3 % | Fe2O3 % | CaO % | MgO % | TiO2 % | P2O5 % | Na2O % | K2O % | MnO % | LOI % | FeO % |
Sample-02 Magnetic fraction | 59.0 | 92.9 | 9.9 | 29.6 | 75.3 | 10.0 | 11.6 | 11.4 | 15.3 | 59.1 | 41.9 | 19.4 | 139.5 | 60.0 |
Sample-02 Non-Magnetic fraction | 41.0 | 7.1 | 90.1 | 70.4 | 24.7 | 90.0 | 88.4 | 88.6 | 84.7 | 40.9 | 58.1 | 80.6 | (38.5) | 40.0 |
Sample-02 Feed | 100.0 | 10.0 | 100.0 | 10.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
Sample-03 Magnetic fraction | 62.0 | 93.3 | 14.2 | 36.5 | 77.5 | 8.7 | 17.9 | 15.1 | 12.7 | 57.1 | 34.7 | 24.2 | 93.1 | 62.4 |
Sample-03 Non-Magnetic fraction | 39.0 | 6.7 | 85.8 | 63.5 | 22.5 | 91.3 | 82.1 | 84.9 | 87.3 | 42.9 | 65.3 | 75.8 | 6.9 | 37.6 |
Sample-03 Feed | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
Qualified Person Review
The technical information in this announcement has been reviewed by Mr. Paulo Ilidio de Brito, who is a member of the Australian Institute of Geoscientists (MAIG # 5173) and a member of AusIMM - The Minerals Institute (MAusIMM # 223453). Mr. Brito is a professional senior geologist with over 34 years of experience in the mining industry, which is relevant to the style of mineralization and type of deposit under consideration to meet the requirements of a qualified person as defined in the 2012 edition of the JORC Code. Mr. Paulo Ilidio de Brito also meets the requirements of a qualified person under the AIM Note for Mining, Oil and Gas Companies.
This announcement contains inside information for the purposes of Article 7 of EU Regulation 596/2014. Upon the publication of this announcement, this inside information is now considered to be in the public domain.
ENDS
For further information please visit www.jangadamines.com or contact:
Jangada Mines plc | Brian McMaster (Chairman) | Tel: +44 (0) 20 7317 6629 |
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Strand Hanson Limited (Nominated & Financial Adviser) | James Spinney Ritchie Balmer Jack Botros | Tel: +44 (0)20 7409 3494 |
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Brandon Hill Capital (Broker) | Jonathan Evans Oliver Stansfield | Tel: +44 (0)20 3463 5000 |
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St Brides Partners Ltd (Financial PR) | Isabel de Salis Juliet Earl | Tel: +44 (0)20 7236 1177 |