Mustang Resources Ltd.: Outstanding metallurgical results highlight quality of Caula Graphite-Vanadium Project

(firmenpresse) -
Outstanding metallurgical results highlight quality of Caula Graphite-Vanadium Project

Mustang Resources Ltd (ASX: MUS; FRA:GGY) is pleased to announce outstanding results from further graphite metallurgical testwork at its Caula Graphite-Vanadium Project in Mozambique.

Key Points

- The results of the metallurgical tests are considered truly outstanding because they have delivered a significant increase in flake size and a reduction in the costs of processing reagents
- Modified and improved flowsheet design allows for integrated graphite and vanadium extraction
- Cumulative proportion of large to super jumbo flakes (>180mm) increased from 44% to 60% for the combined Oxide zone while the Fresh zone increased from 55% to 68%
- High concentrate grades of more than 97% Total Graphitic Carbon have been maintained in modified flowsheet
- The tests were conducted on samples of oxide, transition and fresh material taken from the area of Caula drilled in 2017
- Composites from borehole MODD015 were tested. This borehole is located in the middle of the 2017 boreholes
- The excellent metallurgical results continue to demonstrate Caulas potential to be a low-cost supplier to the expandable graphite and lithium battery industries
- The results will now be incorporated into the Scoping Study which is well underway

Mustang Managing Director Dr. Bernard Olivier said: These metallurgical results are outstanding and provide further evidence of the exceptional quality of the graphite at Caula. We managed to achieve an extraodinary 27% increase in the cumulative proportion of large to super jumbo flakes (>180mm) while maintaining our exceptional concentrate grade of 97%. The large to super jumbo flake-sizes in the fresh zone increased from 55% to 68% while the cumulative oxide zone increased from 44% to 60%.

The Caula Project is in a unique position of hosting high-grade, shallow mineralisation with an exceptional combination of recovery, graphite concentrate flake-size distribution, and purity.

The Caula Project is located along strike from Syrah Resources (ASX: SYR) world-class Balama graphite project in Mozambique.

Details of testwork

The latest testwork flowsheet was a modification of a similar flowsheet used for the earlier work. The graphite test procedure comprised an initial coarse grind, a de-slime stage (by-passed on Fresh), then rougher flotation followed by three re-grind & cleaner flotation stages and two final cleaner flotation stages. By graphite industry standards, this is a remarkably simple flowsheet.

The flowsheet has been extended to allow integrated extraction of both graphite and vanadium from the same feed material. The first vanadium concentration work is currently in progress and result are expected in due course.

The main difference from the earlier work was the use of a single-stage grind with a target of 80% passing 650 mm, rather than the multi-stage grind to 95% passing 710 mm. The single stage grind was selected as Mustang considers that it will give a product size distribution that is more representative (than the multi-stage grind) of full scale operations.

A simpler and lower cost reagent scheme was also used in the current work. The new reagent scheme will cost less than half that used in the testwork for the 17 December announcement, further adding value to the project.

A further difference is that in this round of testwork the samples were composited into Fresh, Transition and Oxide. For earlier work, the samples had been composited into Fresh and Oxide, with the latter consisting of core material with any visible oxidation. This earlier Oxide classification is equivalent to a combination of the current Oxide and Transition classes.

The graphite concentrate grade and size distribution results achieved are summarised in Table 1.

Table 1
Graphite Concentrate Grade and Sizing Results
GraphitSize Fresh SampleTransitional Oxide
e Fractio Sample Sample
Producn
t (
mm)
Mass TGC (%)Mass TGC (%)Mass TGC
(%) (%) (%) (%)

Super >500 5.4 97.58 6.5 98.11 0.9 96.81
Jumbo

Jumbo 300 to 26.1 97.82 25.0 98.66 10.6 97.64
500

Large 180 to 36.4 97.43 36.6 98.64 34.7 97.70
300

Medium 150 to 9.5 96.96 10.3 98.46 14.8 97.76
180

Small 75 to 21.6 96.85 23.2 98.42 36.8 97.78
150

Fines <75 6.0 88.6 1.1 97.71 4.2 96.12
Combined 100 96.99 100 98.52 100 97.67
Concentrate


All TGC concentrate assays quoted were determined using the double LOI method. All calculated TGC head assays from combined metallurgical test products were within experimental limitations of the composite grades.

A simplified comparison with the results announced on 17 December 2017 is shown below in Table 2. It can be seen that the proportion of concentrate with flake-size greater than 180 mm has been substantially increased in the most recent work while the excellent concentrate grades have been maintained. For direct comparison with the earlier results a weighted average of the oxide and transitional results from the current work has been calculated and is shown as Oxidised in Table 2. The weighting is based on the composite weights shown in Table 3.

Table 2
Simplified Comparison with December 2017
Size Greater Size Smaller
ResultsSample than than


180 mm 180 mm
% > 180% TGC % < 180% TGC
Fresh 68% 97.59 32% 95.72
Current
Oxidise60% 98.23 40% 98.09
d

Fresh 55% 97.71 45% 97.27
Dec-17
Oxide 44% 97.87 56% 97.62

A blend of Oxide and Transition material is located on top of the Fresh zone and will therefore be extracted and processed first. This means that the dramatic improvement in performance of combined Oxide and Transition material is of great significance for the project.

Oxide, Transitional and Fresh samples were formed from the intervals shown in Table 3.

Table 3
Details of the Composites Tested
CompositeHole IDIntervalWeighTGC V2O5 S Na2O
Range t (%) (%) (%) (%)
(kg)

Oxide MODD01517 to 31 17.6 0.38 0.120.28
30
meters

TransitioMODD01537 to 57 9.6 0.24 0.310.73
nal 57
meters

Fresh MODD01558 to 70 8.8 0.25 1.240.80
88
meters


For earlier testwork, core material showing any oxidation was classed as oxide. For this current round of work a further distinction was made. It was recognised that there is a near-surface (to about 30 metres downhole) zone of material which (from the sample analyses) appears to have been depleted in sodium (and potassium) by weathering. This has been classed as oxide. Below this (and to about 60 metres downhole) is a zone with visible signs of weathering which has been classed as transitional. In this zone, a variable proportion of sulfides has been oxidised. Fresh material is found further downhole. The oxide material is very friable whilst transitional and fresh materials are generally quite competent1.

Mustang greatly welcomes the prospect of developing a low-cost high-grade graphite product. The high head-grade and simplified flowsheet bode well for the Scoping Study to be completed in Q3. The estimated completion of the Scoping Study has been pushed back slightly due to unexpected delays in receiving the remaining assay results back from the independent laboratory. A smaller processing plant (with lower Capex) would be required to generate a similar final product output compared to other projects with lower grades or more complex metallurgy. To have the project located in the mining-friendly country of Mozambique gives further advantage when compared with projects in other less mining friendly juristictions.

For and on behalf of the Board

Dr. Bernard Olivier
Managing Director

1 Refer to ASX Announcement dated 1 May 2018 More wide, high-grade vanadium results at Caula

FOR FURTHER INFORMATION, PLEASE CONTACT:
Managing Director:
Bernard Olivier
bernard(at)mustangresources.com.au
+61 (0) 408 948 182
+27 (66) 4702 979

Media & Investor Relations:
Paul Armstrong
paul(at)readcorporate.com.au
+61 (0) 8 9388 1474

COMPANY INFORMATION

Mustang Resources Ltd
ABN 34 090 074 785
ASX Code: MUS

Current Shares on Issue:
940,111,309

Market Capitalisation:
$15.98M as at 22 June 2018


COMPANY DIRECTORS

Ian Daymond
Chairman

Bernard Olivier
Managing Director

Cobus van Wyk
Chief Operating Officer

Christiaan Jordaan
Director

Evan Kirby
Director

Twitter: (at)Mustang_Res
mustangresources.com.au

COMPETENT PERSONS STATEMENT:

Information in this report that relates to Exploration Targets, Exploration Results, Mineral Resources or Ore Reserves is based on information compiled by Mr Johan Erasmus, a Competent Person who is a registered member of the South African Council for Natural Scientific Professions (SACNASP) which is a Recognised Professional Organisation (RPO) included in a list posted on the ASX website. Mr Erasmus is a consultant to Sumsare Consulting, Witbank, South Africa which was engaged to undertake this work. Mr Erasmus has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined by the 2012 Edition of the Australasian Code for Reporting of Exploration Results. Mr Erasmus consents to the inclusion of the data in the form and context in which it appears.

Information in this report that relates to the ore sorting and sample composites of the Caula Graphite & Vanadium Projects is based on information compiled by Dr. Evan Kirby, a Competent Person who is a registered member of the South African Institute for Mining and Metallurgy (SAIMM), which is a Recognised Professional Organisation (RPO) included in a list posted on the ASX website. Dr Kirby is a consultant who was engaged by the company to undertake this work. Dr Kirby is a Non-Executive Director of the company. Dr Kirby has sufficient experience, which is relevant to the style of mineralisation and type of deposit under consideration and to the activity, which he is undertaking to qualify as a Competent Person as defined by the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Dr Kirby consents to the inclusion of the data in the form and context in which it appears.

FORWARD-LOOKING STATEMENTS:

This document may include forward-looking statements. Forward-looking statements include, but are not necessarily limited to the Companys planned exploration program and other statements that are not historic facts. When used in this document, words such as could, plan, estimate, expect, intend, may, potential, should and similar expressions are forward-looking statements. Although the Company considers that its expectations reflected in these statements are reasonable, such statements involve risks and uncertainties, and no assurance can be given that actual results will be consistent with these forward-looking statement.



APPENDIX 1 - DD DRILLHOLE SUMMARY TABLE
Please refer to the ASX Announcement dated 1 May 2018 for a copy of the DD Drillhole summary table for Borehole MODD015.



JORC CODE, 2012 EDITION - TABLE 1
APPENDIX TO GRAPHITE ANNOUNCEMENT - 25 JUNE 2018
Section 1: Sampling techniques and data.
Criteria JORC Code MUS Commentary
Explanation

Sampling -Nature and 2015 Field Program
techniqu quality of Samples have been taken from a
es sampling Reverse Circulation (RC)
(
eg cut drillhole (MORC004) which was
channels, drilled by Mitchell Drilling, an
random chips, Australian company with a regional
or specific presence in Mozambique. Reverse
specialised circulation drilling was used to
industry collect 1m samples (roughly 35kg)
standard by an air cyclone which was reduced
measurement to a 3kg sample by riffling. The
tools
appropriate to drillhole collar location was
the minerals generated based on results from a
under recently flown airborne
investigation,
such as down SkyTEM EM survey (refer to previous
hole gamma MUS ASX
sondes, or announcements).
handheld XRF
instruments, A total of 77 intervals from RC drill
etc). These hole
examples MORC-004 were selected for
should not be sampling.
taken as
limiting the
broad meaning Drillhole intervals were selected
of for sampling based on geological
sampling. logging and samples showing no
clear evidence of graphite
-Include mineralisation have been excluded
reference to (except 1m into barren zones) from
measures taken the analysis completed by SGS
to ensure Randfontein, an accredited
sample laboratory.

representivity aThe samples were riffle split on a
nd the 50:50 basis, with one split
appropriate pulverised and analysed for Total
calibration of Graphitic Carbon (TGC), Total
any Carbon (TC) and Total Sulphur (TS)
measurement using a
tools or
systems Leco Furnace, and the remaining
used. split held in
storage.
-Aspects of
the
determination 2016 Field Program
of Five cored boreholes were drilled as
mineralisation part of the 2016 field program for
that are the Caula deposit. The diamond
Material to drilling (DD) was completed using a
the Public
Report. In Boart Longyear LF 90 drill-rig and
cases where the core was recovered with HQ
industry (III) equipment. The contractor
standard work used for the 2016 drill program is
has been done Major Drilling Group International,
this would be a Canadian-based operation with a
relatively local presence in Mozambique.
simple
(
egreverse circu· Drillhole collar locations were
lation drilling generated based on results from a
was used to flown airborne
obtain 1 m
samples from SkyTEM EM survey which was completed
which 3 kg was during 2015 (refer to previous MUS
pulverised to ASX
produce a 30 g announcements).
charge for
fire assay). · Sampling is of HQ (III) DD core. A
In other cases total of 298m of mineralisation
more were sampled over five DD
explanation boreholes. One DD hole (MOD004)
may be have been twinned with an existing
required, such RC hole (MORC004) for lithology and
as where there grade verification.
is coarse gold
that has
inherent · The core is photographed in
sampling sequence as the core is packed into
problems. the core trays at the drill
Unusual site.
commodities or
mineralisation · The recovered DD core is cut
types lengthwise with a core splitting
( saw to produce 1m samples. Where
eg submarine lithological boundaries did not fit
nodules) may the 1m geometry or at end of hole
warrant sampling, the sample length was to
disclosure of be a minimum of 0.42m or a maximum
detailed of 1.68m.
information.

· Core is halved for normal
analyses. In the case of duplicate
analyses (1 in 20), the core is
quartered. In total 933kg of sample
(Including duplicates) was taken
over 296 samples for chemical
analyses.


· The remaining core is halved in
the mineralised zones to provide a
quartered sample for metallurgical
analysis. In total 334kg of sample
over 296 samples was taken for
metallurgical

testwork.
· The remaining quarters and halves
are retained in stratigraphic
sequence in the core trays. The
remaining core has been
photographed, and the trays wrapped
in cling-film, before it was put in
container storage on site at the
Mustang camp outside
Montepuez.

· Samples were submitted for LECO
analyses. Mineralised zone core as
well as 1m boundaries into
non-mineralised zone core were
submitted for
analysis.

· Initial metallurgical analysis and
flow-sheet

testwork was performed on 2
composited samples. The sampling
was split between the oxidised and
fresh mineralised
zones.



2017 Field Program
Eleven cored boreholes were drilled
as part of the 2017 field program
for the Caula deposit. The diamond
drilling (DD) was completed using

Boart Longyear LF 90 drill-rigs and
the core was recovered with PQ
(III) and HQ (III) equipment. The
contractor used for the 2017 drill
program is

Major Drilling Group International,
a Canadian based operation with a
local presence in Mozambique.


· Drillhole collar locations were
generated based on results from a
flown airborne

SkyTEM EM survey which was completed
during 2015 (refer to previous MUS
ASX announcements), and from the
2016 core drilling
program.

· Sampling is of PQ (III) and HQ
(III) DD core. Sampling is still in
progress.


· The core is photographed in
sequence as the core is packed into
the core trays at the drill
site.

· The recovered DD core is cut
lengthwise with a core splitting
saw to produce 1 m samples. Where
lithological boundaries did not fit
the 1m geometry or at end of hole
sampling, the sample length was to
be a minimum of 0.50m or a maximum
of 2.00m.


· Core is halved for normal
analyses. In the case of duplicate
analyses (1 in 20), the core is
quartered.


· The remaining core is halved in
the mineralised zones to provide a
quartered sample for metallurgical
analysis.

· The remaining quarters and halves
are retained in stratigraphic
sequence in the
core
trays. The remaining core has been
photographed, and the trays wrapped
in cling-film, before it is put in
container storage on site at the
Mustang camp outside
Montepuez.

· Samples are to be submitted for
LECO analyses. Mineralised zone
core as well as 1 m boundaries into
non-mineralised zone core are to be
submitted for
analysis.


Drilling -Drill type (eg2015 Field Program
techniqu core, reverse Reverse circulation drilling was
es circulation, used to drill a 5.5 inch diameter
open-hole borehole (MORC004). RC drill chips
hammer, rotary were collected by an air cyclone at
air blast, 1m intervals for logging and
auger, Bangka, sampling. Approximately 35kg per
sonic, etc) metre was collected by an air
and details cyclone which was reduced to a 4kg
( sample by riffling.
eg core
diameter,
triple or Reflex Ezy shot tools were used to
standard tube, take down-hole survey measurements
depth of to record
diamond tails,
face-sampling drillhole azimuth and dip.
bit or other
type, whether 2016 Field Program
core is · The core drilling was completed
oriented and with a
if so, by what
method, Boart Longyear LF-90 drilling rig.
etc). The drilling equipment was HQ (III)
sized.


· Drilling was planned to be as
close to perpendicular as possible
to strike, and as close as possible
to true width intersections.


· The borehole dip and azimuth was
surveyed at 3m intervals from the
bottom of the borehole with a
Reflex
EZ-
Trac tool. The maximum deviation
from the planned azimuth was
measured at
6
o in MODD003. The maximum deviation
from the planned dip was measured
at
5
o in MODD004.
· Final borehole collar positions
were surveyed with a handheld GPS
survey instrument, and the collar
elevations were projected from the
DEM as generated during the

SkyTEM survey in 2015.
· The core was oriented with a
Reflex
Tool.

2017 Field Program
· The core drilling was completed
with

Boart Longyear LF-90 drilling rigs.
The drilling equipment was PQ (III)
and HQ (III) sized.


· Drilling was planned to be as
close to perpendicular as possible
to strike, and as close as possible
to true width intersections.


· The borehole dip and azimuth was
surveyed at 3 m intervals from the
bottom of the borehole with a
Reflex
EZ-
Trac tool.
· Final borehole collar positions
were surveyed with a handheld GPS
survey instrument, and the collar
elevations were projected from the
DEM as generated during the

SkyTEM survey in 2015.
· The core was oriented with a
Reflex
Tool.

Drill -Method of 2015 Field Program
sample recording and The condition and qualitative
recovery assessing core estimates of RC sample recovery for
and chip MORC004 were determined through
sample visual inspection of the 1m sample
recoveries and bags and recorded at the time of
results sampling. A hard copy and digital
assessed. copy of the sampling log are
maintained for data verification.
-Measures
taken to
maximise Recovery has been good with 35kg +
sample being returned per metre
recovery and drilled.
ensure
representative Due to the early stage of
exploration work for the Caula
nature of the project, no
samples.
relationship between sample recovery
-Whether a and grade is known to exist at this
relationship point.
exists between
sample
recovery and
grade and 2016 Field Program
whether sample The condition and qualitative
bias may have estimates of DD sample recovery
occurred due were determined through visual
to inspection and measurement of the
preferential drilling core runs and recorded at
loss/gain of the time of recovery at the drill
fine/coarse rig. A hard copy and digital copy
material. of the sampling log are maintained
for data verification.


· Core recovery measurements are
recorded for every
borehole.

· Where recoveries were found to be
less than 95%, the drill runs were
shortened to 1m, and drilling speed
lowered to improve recovery.


· In some instances in the oxidised
zone (faulting, jointing and severe
oxidation), core losses were
unavoidable. These losses are
recorded, and have been zero rated
in terms of grade for the

modeling of the Caula graphite
resource. The average core
recovery for the oxidised zone is
83.1%.


· Recoveries in the fresh zone were
very good at an average of
98.8%.

2017 Field Program
The condition and qualitative
estimates of DD sample recovery
were determined through visual
inspection and measurement of the
drilling core runs and recorded at
the time of recovery at the
drill-rig. A hard copy and digital
copy of the sampling log are
maintained for data verification.


· Core recovery measurements are
recorded for every
borehole.

· Where recoveries were found to be
less than 95%, the drill runs were
shortened to 1 m, and drilling
speed lowered to improve recovery.


· In some instances in the oxidised
zone (faulting, jointing and severe
oxidation), core losses were
unavoidable. These losses are
recorded, and have been zero rated
in terms of grade for the

modeling of the Caula graphite
resource. The average core
recovery for the oxidized zone is
91%.


· Recoveries in the fresh zone were
very good at an average of
98%.


Logging -Whether core 2015 Field Program
and chip RC drill-chip samples were
samples have geologically logged by trained
been geologists. The
geologically
and drillhole (MORC004) is considered by
geotechnically MUS to be part of a maiden drill
logged to a program aimed at identifying
level of shallow graphite mineralisation.
detail to Mustang used the results from this
support maiden program to prioritise target
appropriate areas, which then become the focus
Mineral of the 2016
Resource
estimation, drillhole definition programs.
mining studies Whilst the aim of this maiden drill
and program was not to produce a
metallurgical Mineral Resource estimate MORC004
studies. was used for resource estimation
purposes in this resource estimate.
-Whether
logging is
qualitative or Logging of RC drill holes includes
quantitative recording of lithology, mineralogy,
in nature. mineralisation, weathering, colour
Core (or and other features of the samples.
costean, RC Chip trays are photographed.
channel, etc)
photography.
Geological descriptions and
-The total estimates of visual graphite
length and percentages on preliminary logs are
percentage of semi-quantitative. All
the relevant
intersections drillholes were logged in full.
logged. 2016 Field Program
· All holes drilled were logged in
full and sampled by the site
geologists.

· All the logged information which
includes depth, lithology, mineral
assemblage, structural information,
Cg mineralisation (laboratory
data), collar survey and logging
geologists are recorded in the
field logging sheets and in digital
format.


· The recovered core is recorded in
sequence as digital
photographs.

· The analytical samples were
shipped by road to the SGS
Randfontein laboratory in South
Africa for analysis. The analyses
were completed by SGS Randfontein,
and have been used to estimate the
grade of the Caula deposit in this
CPR.

· Umpire samples have been
identified and were dispatched to
Bureau Veritas in Centurion. These
analyses have been completed and
are included in the
CPR.

· The samples for metallurgy testwork
were dispatched via South Africa to
SGS Malaga in Perth, Australia. The

testwork has been completed and
these results have been included in
this
CPR.

· The remaining core is in storage
at the Mustang Exploration Camp
near Montepuez in Mozambique. The
remaining core is also recorded in
sequence in digital photograph
format.

2017 Field Program
· All holes drilled were logged in
full and sampled by the site
geologists.

· All the logged information which
includes depth, lithology, mineral
assemblage, structural information,
Cg mineralisation (laboratory
data), collar survey and logging
geologists are recorded in the
field logging sheets and in
digital
format.
· The recovered core is recorded in
sequence
as
digital photographs.
· The analytical samples are to be
shipped by road to the SGS
Randfontein laboratory in South
Africa for analysis. The analyses
are to be completed by SGS
Randfontein, and will be used to
enhance the initial estimate of the
grade of the Caula deposit in the
next CPR
update.

· Umpire samples have been
identified and will be dispatched
to Bureau Veritas in
Centurion.

· The samples for metallurgy testwork
will be submitted for test work
once the analytical results are
available.


The remaining core is in storage at
the Mustang Exploration Camp near
Montepuez in Mozambique. The
remaining core is also recorded in
sequence in digital photograph
format.

Sub-sampl-If core, 2015 Field Program
ing whether cut or RC samples were collected on the rig
techniqu sawn and using riffle splitters to reduce
es and whether the sample mass from 35kg to 4kg.
sample quarter, half Sample preparation of the RC chip
preparat or all core samples follows industry best
ion taken. practice in sample preparation
involving oven drying
-If non-core, (105
whether oC), split (300g) and pulverising to
riffled, tube a grind size of 85% passing 75
sampled, micron. The sample preparation for
rotary split, RC samples follows industry best
etc and practice.
whether
sampled wet or Field QC procedures were adopted as
dry. follows:

-For all · Insertion rate for blanks - 5% (1
sample types, in
the nature, 20)
quality and
appropriateness· Insertion rate for standards - 5%
of the sample (1 in
preparation 20)
technique.
· Insertion rate for duplicates - 5%
-Quality (1 in 20)
control
procedures
adopted for · Umpire duplicates - 5% (1 in 20)
all Two CRM (GGC004 and GGC009) were
sub-sampling obtained from
stages to
maximise Geostats Pty Ltd to monitor analysis
of laboratory for graphitic carbon,
representivity o carbon and
f sulphur.
samples.
1m RC composite sampling has been
-Measures undertaken for this phase of the
taken to exploration
ensure that program.
the sampling
is
representative 2016 Field Program
of the in situ The majority of samples were moist
material (from the DD process) at recovery,
collected, with ambient temperatures
including for sufficiently high to dry the
instance oxidised core before the
results for commencement of
field sampling.
duplicate/secon
d-half Field QC procedures were adopted as
sampling. follows over and above the
laboratory internal
-Whether controls:
sample sizes
are · Insertion rate for blanks - at
appropriate to least 5% (1 in
the grain size 20)
of the
material being · Insertion rate for standards - at
sampled. least 5% (1 in
20)

· Insertion rate for duplicates -
at least 5% (1 in 20)


· Umpire duplicates - at least 5%
(1 in 20)


· Four Graphite standards (GGC008,
GGC005, GGC003 and GGC002) were
obtained from

Geostats Pty Ltd to monitor analysis
by the laboratory for graphitic
carbon, carbon and
sulphur.

As far as possible 1m DD composite
sampling has been undertaken for
this phase of the exploration
program.

· The core is split by saw and half
core is submitted for analyses
generally as 1m samples. When a
duplicate sample is submitted, the
core is
quartered.

· Mineralised samples are submitted
for LECO analyses as well as for
ICP Multi-element
analyses.

· Within the total samples
dispatched a random sequence of at
least 5% each of standards, blanks
and duplicates are included.


· Sample preparation is done by SGS
in Johannesburg, before the
prepared samples are analysed for
content
determination.

· Sampling procedure include drying,
crushing, splitting and pulverizing
ensures that 85% of the sample is
75 micron or less in size.

A split of the sample is analysed
using a LECO analyser to determine
carbon in graphite content.


· The sample procedure standards
followed are internal to SGS and
are listed
below:

· WGH 79 (Receive Sample Weight),
SCR 32 (Sample Screening), CSA01V
(Total Carbon by LECO), CSA05V
(Graphitic Carbon by LECO), CSA06V
(Sulphur by LECO).


· QC measures include the submission
of duplicate samples (5% of
samples), blanks (5% of samples)
and standards (5% of samples) over
and above the internal controls at
SGS.

· The smallest core sample dimension
after cutting is 29mm. The largest
category flake size is > 8 mesh or
2.38mm. The sample size exceeds the
target material size
comfortably.

· The metallurgical samples consist
of quartered core, sampled and
bagged generally per metre.


· Sampling for metallurgical testing
is complete, and included; Receipt
of graphite samples, Formation of
composites, Bond rod mill

grindability, Head assay, Particle
size distribution (PSD) and
fraction assay on head samples,
Rougher flotation, Rougher and
multiple re-grind and cleaner
flotation, Final concentrate PSD
and fraction
assays.

· The metallurgical composites were
batched by the laboratory
metallurgists once the results from
the initial laboratory work at SGS
Randfontein had been received.


2017 Field Program
The majority of samples were moist
(from the DD process) at recovery,
with ambient temperatures
sufficiently high to dry the
oxidised core before the
commencement of
sampling.

Field QC procedures were adopted as
follows over and above the
laboratory internal
controls:

· Insertion rate for blanks - at
least 5% (1 in
20)

· Insertion rate for standards - at
least 5% (1 in
20)

· Insertion rate for duplicates -
at least 5% (1 in 20)


· Umpire duplicates - at least 5%
(1 in 20)


· Four Graphite standards (GGC008,
GGC005, GGC003 and GGC002) were
obtained from

Geostats Pty Ltd to monitor analysis
by the laboratory for graphitic
carbon, carbon and
sulphur.

As far as possible 1m DD composite
sampling has been undertaken for
this phase of the exploration
program.

· The core is split by saw and half
core is submitted for analyses
generally as 1 m samples. When
a
duplicate sample is submitted, the
core
is
quartered.
· Mineralised samples are submitted
for LECO analyses as well
as
for ICP Multi-element analyses.
· Within the total samples
dispatched a random sequence of at
least 5% each of standards, blanks
and duplicates are included.


· Sample preparation is done by SGS
in Johannesburg, before the
prepared samples are analysed for
content
determination.
· Sampling procedure include drying,
crushing, splitting and pulverizing
ensures that 85% of the sample is
75 micron or less in size. A split
of the sample is analysed using a
LECO analyser to determine carbon
in
graphite
content.
· The sample procedure standards
followed are internal to SGS and
are listed
below:

· WGH 79 (Receive Sample Weight),
SCR 32 (Sample Screening), CSA01V
(Total Carbon by LECO), CSA05V
(Graphitic Carbon by LECO), CSA06V
(Sulphur by LECO).


· QC measures include the submission
of duplicate samples (5% of
samples), blanks (5% of samples)
and standards (5% of samples) over
and above the internal controls at
SGS.

· The smallest core sample dimension
after cutting is 29mm. The largest
category flake size is > 8 mesh or
2.38mm. The sample size exceeds the
target material size
comfortably.

· The metallurgical samples consist
of quartered core, sampled and
bagged generally per metre.


· Sampling for metallurgical testing
is complete, and included; Receipt
of graphite samples, Formation of
composites, Bond rod mill

grindability, Head assay, Particle
size distribution (PSD) and
fraction assay on head samples,
Rougher flotation, Rougher and
multiple re-grind and cleaner
flotation, Final concentrate PSD
and fraction
assays.

The metallurgical composites will be
batched
by the laboratory metallurgists
once the results from the initial
laboratory work at SGS Randfontein
had been
received.

Quality -The nature, 2015 Field Program
of quality and A total 77 samples were analysed by
assay appropriateness SGS Laboratories in South Africa
data of the for
and assaying and
laborato laboratory Total Graphitic Carbon (TGC), Total
ry procedures Carbon (TC) and Total Sulphur (TS)
tests used and using a
whether the
technique is Leco Furnace.
considered Detection limits for these analyses
partial or are considered appropriate for the
total. reported assay grades and adequate
for this phase of the exploration
-For program.
geophysical
tools,
spectrometers, No geophysical tools were used to
handheld XRF determine any element
instruments, concentrations.
etc, the
parameters The assaying and laboratory
used in procedures used are appropriate for
determining the material
the analysis tested.
including
instrument SGS carried out sample preparation
make and checks for fineness as part of
model, reading their internal procedures to ensure
times, the grind size of 85% passing 75
calibrations micron was being attained.
factors Laboratory QAQC involves the use
applied and of internal lab standards using
their certified reference material,
derivation, blanks, and repeats as part of
etc. their in-house
procedures.
-Nature of
quality
control 2016 Field Program
procedures · All samples are labelled with a
adopted unique sequential number with a
( sample ledger recording all
eg standards, samples.
blanks,
duplicates, · QA/QC samples are included in a
external random sequence at a frequency of
laboratory at least 5% each for standards,
checks) and blanks and duplicates.
whether
acceptable
levels of · The laboratory uses internal
accuracy standards in addition to the
( standards, blanks and duplicates
ie lack of inserted by
bias) and Mustang.
precision have
been · The standards are supplied by an
established. external and independent third
party. Four standards were used for
the laboratory

testwork; GGC-08 and GGC-05, GGC-03
and
GGC-02.

· The blanks are made up from non-
graphitic rock. The duplicates are
a quartered sample of the original
halved cores. The umpire samples
were selected from the prepared
pulps of initial
samples.

· The detection limits are deemed
sufficient for the purpose of the
Caula Mineral Resource estimation.


· The samples were analysed by SGS,
with sample preparation done at the
Randfontein laboratory in
Johannesburg. Sampling procedures
are listed above and includes
drying, crushing, splitting and
pulverizing such that 85% of the
sample is 75 micron or less in
size. A split of the sample will be
analysed using a LECO analyser to
determine carbon in graphite carbon
content.


· Laboratory testwork was completed
during the first quarter of 2017,
and the Metallurgy

testwork followed on in the second
quarter of
2017.

2017 Field Program
· All samples are labelled with a
unique sequential number with a
sample ledger recording all
samples.

· QA/QC samples are included in a
random sequence at a frequency of
at least 5% each for standards,
blanks and duplicates.


· The laboratory uses internal
standards in addition to the
standards, blanks and duplicates
inserted by
Mustang.

· The standards are supplied by an
external and independent third
party. Four standards were used for
the laboratory

testwork; GGC-08 and GGC-05, GGC-03
and
GGC-02.

· The blanks are made up from non-
graphitic rock. The duplicates are
a quartered sample of the original
halved cores. The umpire samples
were selected from the prepared
pulps of initial
samples.

· The detection limits are deemed
sufficient for the purpose of the
Caula Mineral Resource estimation.


· The samples will be analysed by
SGS, with sample preparation done
at the Randfontein laboratory in
Johannesburg. Sampling

procedures are listed above and
includes drying, crushing,
splitting and pulverising such that
85% of the sample is 75 micron or
less in size. A split of the sample
will be analysed using a LECO
analyser to determine carbon in
grap

Unternehmensinformation / Kurzprofil:
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Datum: 25.06.2018 - 16:33 Uhr
Sprache: Deutsch
News-ID 577347
Anzahl Zeichen: 113397

contact information:
Town:

Wien

Kategorie:

Business News

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"Mustang Resources Ltd.: Outstanding metallurgical results highlight quality of Caula Graphite-Vanadium Project
"
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