Jangada Mines PLC Met tests show high grade vanadium recoveries (7943N)
26 September 2019 - 8:00PM
UK Regulatory
TIDMJAN
RNS Number : 7943N
Jangada Mines PLC
26 September 2019
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% V(2) O(5) and 95%
Fe(2) O(3) . High TiO2 grade concentrate (> 30%) was obtained on
the non-magnetic fraction.
-- Results also establish that the magnetic recoveries produce a
low SiO(2) and low Al(2) O(3) product
-- Significant upgrades of the Fe and V(2) O(5) 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% V(2)
O(5) plus 95.4% and 94.2 Fe(2) O(3) , respectively. The
non-magnetic fraction returned enriched in titanium dioxide with
33.8% and 33.7% TiO(2.)
The results also establish that the magnetic recoveries produce
a low SiO(2) and low Al(2) O(3) product. Significant upgrades of
the Fe and V(2) O(5) 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 V2O5 SiO2 AI2O3 Fe2O3 CaO MgO TiO2 P2O5 Na2O K2O MnO LOI FeO
(g)
% % % % % % % % % % % % %
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
Strand Hanson Limited James Spinney Tel: +44 (0)20 7409
(Nominated & Financial Ritchie Balmer 3494
Adviser) Jack Botros
Brandon Hill Capital Jonathan Evans Tel: +44 (0)20 3463
(Broker) Oliver Stansfield 5000
St Brides Partners Isabel de Salis Tel: +44 (0)20 7236
Ltd Juliet Earl 1177
(Financial PR)
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END
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