TIDMBWAP
Findings of Orientation Mineral Separation Testwork at the Nkoteng 1 Heavy
Mineral Sands Project, Cameroon
19 July 2023
BWA Group PLC
("BWA", or the "Company") (AQSE: BWAP)
Findings of Orientation Mineral Separation Testwork at the Nkoteng 1 Heavy
Mineral Sands Project, Cameroon
BWA Group plc [AQSE: BWAP], which has mineral exploration licences in both
Cameroon and Canada and is quoted on London's AQSE Growth Market, provides an
update on its recently completed orientation separation testwork, carried out on
20 low-grade primary samples from the mechanised auger programme, from within
the Nkoteng 1 Licence, Central Cameroon ("Nkoteng 1" or the "Nkoteng Project").
Through its subsidiary, BWA Resources Ltd ("BWAR"), BWA currently has five heavy
mineral sands ("HMS") licences across two project areas in Cameroon, totalling
1,267 km2, all of which are at an early stage of exploration. The Nkoteng 1
Licence covers an area of 343 km2 and the contiguous Nkoteng 2 Licence covers an
area of 500 km2, located 60 km to the northeast of Yaoundé with easy transport
links to the port of Douala. The Nkoteng Licences cover a significant part of
the HMS-prospective Sanaga river system. The Dehane 1, 2 and 3 Licences
("Dehane" or the "Dehane Project") cover an area of 430 km2 comprising part of
the prospective Nyong river system, estuary, and coastal zone, located
approximately 166 km to the west of the capital, Yaoundé and 70 km from the deep
seaport and industrial zone of Kribi.
A version of this announcement including maps and photographs can be viewed on
the Company's website, http://www.bwagroupplc.com/bwa-announcements.html
BWA is pleased to announce the findings of the preliminary orientation mineral
separation testwork on selected low-grade samples taken from the closed barrel
mechanised auger sampling programme on the Nkoteng 1 Project, reported in
accordance with JORC (2012). The short shallow auger sampling programme
completed in June 2022 drilled 107 holes for 193.30 metres and 171 primary
samples (announcement dated 29 June 2022). The programme targeted the central
sector of the licence where pitting and hand auger sampling (announcement dated
29 June 2022) identified an area of anomalous Ilmenite, Rutile, Zircon and
Kyanite alluvial HMS.
The orientation analytical testwork was completed by Dipl. Ing. Uwe Bruder of
Bruder Consulting Germany and comprised processing of 20 low-grade auger drill
cores, composited for test work (Table 1) using simple process methods and
equipment including gravity, sluice, heavy liquid and magnetic separation. A
primary objective of the work to determine suitable process design and
procedures for use in Cameroon, to be used for the next round of exploration
drilling, planned in H2 2023. This work follows on from the granulometric and
size fractioning studies on half-cores from the same samples, completed by BWA
(announcement dated 7 September 2022).
The scope of works entailed:
· Compositing auger samples into 3 similar unit types (clay, sand, weathered
clay).
· Orientation mineral separation processing and analytical testwork.
· Approximate recovery of heavy minerals using simple process equipment.
· Proposals for simple methods to determine the preferred analytical method
for in-country analysis of heavy minerals from drill cores (equipment and test
procedure).
Highlights and Commentary
Although the samples were low-grade and from areas that BWA consider to be of
lower prospectivity and priority, the samples have returned positive and
anomalous results. The testwork methodology and subsequent analytical flowsheet
was the important aspect and deliverable of the testwork which will lead into
onsite laboratory design and Standard Operating Procedures.
Test work demonstrated good recovery (>80%) of heavy minerals by simple gravity,
DMS and magnetic separation within the sand size samples of the material
provided. As expected, the sand composite sample contain the greatest quantity
of HMS. However significant heavy minerals do occur within clay size samples,
and not unexpectedly these are less easily separated, requiring additional
sluice processing.
A breakdown of total heavy mineral ("THM") content from the composite samples
are as follows:
>0.063 mm sample fraction (sand particle size and above):
· Clay composite sample - 0.35% THM
· Sand composite sample - 0.824% THM
· Weathering clay composite sample - 0.639% THM
<0.063 mm sample fraction (clay particle size):
· Clay composite sample - 0.408% THM
· Sand composite sample - 1.350% THM
· Weathering clay composite sample - 0.245% THM
It should be noted, the highly prospective coarse basal gravels primary target
unit have not been encountered or tested as part of this study.
Outlook
The Company are processing the orientation testwork results to understand the
implications. Furthermore, the results will be combined with the size
fractioning studies completed in September 2022 to identify the relationships
and add more information to improve the knowledge of the depositional
characteristics for Nkoteng and associated licences.
This orientation testwork will lead into onsite laboratory design and Standard
Operating Procedures with work in progress to source suppliers and equipment, in
preparation for the planned exploration programme.
The THM% content from the samples is encouraging from low-grade areas and is
reasonable from within the sand size fractions. Furthermore, recovery appears to
be good from observations by Bruder Consulting from the shaking table and
sluices, with recoveries indicated around 80%.
James Butterfield, interim Non-executive Chairman of BWA, commented:
"This round of orientation testwork has given BWA a clear process to follow in
order to set up an in-country laboratory, as well as working towards a set of
Standard Operating Procedures with which to work within, ensuring accurate and
reliable analysis. BWA are also pleased with the early indications of recovery
using lab-scale methods. More work is required in the future. BWA is excited
about the positive outcome and is planning further exploration from the Nkoteng
and Dehane sites".
Summary of Orientation Mineral Separation Testwork
In accordance with JORC (2012) reporting guidelines, a summary of the material
information used is set out below. For further details, please refer to the JORC
(2012) Table 1, located in the Appendix to this announcement.
The exploration programme from which the 20 primary samples were selected,
consisted of 107 holes for 193.30 metres and 171 primary samples, collected
within the current and paleo Sanaga river floodplain (Figure 2). The holes were
mechanically drilled using a Van Walt windowless percussion sampling system with
half core samples split for analysis, with the remaining half core stored in
bags for reference and duplicate samples as necessary.
The 20 primary samples were composited into three lithological groups: clay,
sand, and weathering clay which were tested separately, as presented in the
table below and in Figure 3. The colours denominate the composite, those without
colours were excluded and deemed outliers to primary lithology types. The test
steps are outlined below and illustrated in Figure 3:
· PSD (particle size distribution) work on 100 grams of sample (Table 2).
· Crushing down to <6.0mm.
· Agitation of each sample in water until the clayey agglomerates had
dissolved.
· Gravity sorting by shaking table (> 0.063 mm fractions) and sluice (< 0063
mm) (Figure 4 and 5). Although possible to recover below 0.063 mm, it would
likely not be economic on an industrial scale.
· Drying of preconcentrates for dry magnetic separation.
· Magnetic separation for magnetic minerals, i.e., ilmenite and non-magnetic
minerals, i.e., rutile and zirconium
· Heavy liquid separation (2.82 g/cm³) of magnetic and non-magnetic separation
products.
· Reporting (Figure 6 and 7 and Table 2).
Geology and Geological Interpretation
The prospective Sanaga river is the main river which runs through the BWA
Nkoteng 1 and 2 licence area and accommodates approximately 100 km of the river
floodplain system and associated tributaries, and an even larger paleo
-floodplain area, observed in satellite imagery, although this has yet to be
fully ground-truthed through fieldwork.
The geological sequence generally consists of a cover of clays, overlying the
target deposit layer consisting of sands and gravels, generally laying directly
on the bedrock.
Surficial geology encountered during the auger programme comprised of 0.2 m of
surface organic rich soil, alluvial clays and sandy clays ranging from 0 m to 4
m with an average thickness of approximately 1.3 m thick, and basal sand and
gravels ranging from 0 m to 3 m thick in places.
The Nkoteng deposit is likely to be a trap placer (native) deposit. The entire
stratigraphic column of the Sanaga alluvial deposits is considered potentially
mineralised.
Nkoteng is located within the Yaoundé Domain of the Pan African Belt, a large
nappe unit that has been thrusted southward onto the Congo Craton and is
characterised by low-grade to high-grade garnet bearing metamorphosed schists,
gneiss and orthogneisses.
Implications for Future Exploration
The recovery of heavy minerals in the sampled areas has yielded positive
results, which is highly encouraging. The mineralisation seems to be continuing
positively over a distance of 8 km. BWA is satisfied with the grade and extent
of all the target minerals and is planning to conduct follow-up work in the near
future across the licence holding.
Competent Person's Statement
The information in this report which relates to exploration results for the
Nkoteng Project is based upon and fairly represents information collected and
compiled by Mr Emmanuel Simo, MSc., Senior Geologist and Chief Geologist for
BWA, who is a Member of the Australian Institute of Geoscientists.
The results were reviewed by Mr J.N. Hogg, MSc. MAIG, Principal Geologist for
Addison Mining Services (AMS) and Non-executive Director of BWAR.
Mr Simo and Mr Hogg have sufficient experience relevant to the style of
mineralisation, the type of deposit under consideration and to the activity
undertaken to qualify as a Competent Person as defined in the JORC Code 2012
edition of the Australasian Code for Reporting of Exploration Results, Mineral
Resources and Ore Reserves.
Mr Hogg has reviewed and verified the technical information that forms the basis
of and has been used in the preparation of this announcement, including all
sampling and analytical data, and analytical techniques. Mr Hogg consents to the
inclusion in this announcement of the matters based on the information, in the
form and context in which it appears.
Forward Looking Statement
This announcement contains forward-looking statements which involve a number of
risks and uncertainties. These forward-looking statements are expressed in good
faith and believed to have a reasonable basis. These statements reflect current
expectations, intentions or strategies regarding the future and assumptions
based on currently available information. Should one or more of the risks or
uncertainties materialise, or should underlying assumptions prove incorrect,
actual results may vary from the expectations, intentions and strategies
described in this announcement. No obligation is assumed to update forward
looking statements if these beliefs, opinions and estimates should change or to
reflect other future developments.
For further information on the Company, please visit
http://www.bwagroupplc.com/index.html or contact:
BWA Group PLC +44 (0) 7770 225 253
James Butterfield enquiries@bwagroupplc.com
Interim Chairman
Allenby Capital Limited +44 (0)20 3328 5656
Corporate Adviser
Nick Harriss/Lauren Wright
Glossary of Technical Terms:
+---------+-------------------------------------------------------------------+
|"%" |percent; |
+---------+-------------------------------------------------------------------+
|Al2O3 |Aluminium Oxide; |
+---------+-------------------------------------------------------------------+
|"ALS" |Australian Laboratory Services; |
+---------+-------------------------------------------------------------------+
|"AMS" |Addison Mining Services; |
+---------+-------------------------------------------------------------------+
|"BRGM" |Bureau de Recherches Géologiques et Minié |
| | |
| |(French Geological Survey); |
+---------+-------------------------------------------------------------------+
|"BWA" |BWA Group PLC; |
+---------+-------------------------------------------------------------------+
|"DTM" |Digital Terrain Model. Computerised topographic model; |
+---------+-------------------------------------------------------------------+
|"DUP" |Décret d'Utilité Publique (Public Utility Decree); |
+---------+-------------------------------------------------------------------+
|"HMS" |Heavy Mineral Sands; |
+---------+-------------------------------------------------------------------+
|"km" |Kilometre; |
+---------+-------------------------------------------------------------------+
|"TiO2" |Titanium dioxide, also known as titanium (IV) oxide. Generally |
| |sourced from ilmenite, rutile, and anatase; |
+---------+-------------------------------------------------------------------+
|"Zr" |Zircon or Zirconium; |
+---------+-------------------------------------------------------------------+
|"JORC |the 2012 edition of the JORC code; |
|(2012)" | |
+---------+-------------------------------------------------------------------+
|"JORC" |the Australasian Code for Reporting of Exploration Results, Mineral|
| |Resources and Ore Reserves, as published by the Joint Ore Reserves |
| |Committee of The Australasian Institute of Mining and Metallurgy, |
| |Australian Institute of Geoscientists and Minerals Council of |
| |Australia; |
+---------+-------------------------------------------------------------------+
|"m" |metre; |
+---------+-------------------------------------------------------------------+
|"ME |Analysis by Fusion/XRF; |
|-XRF11bE"| |
| | |
+---------+-------------------------------------------------------------------+
|"QA/QC" |Quality assurance/quality control. |
+---------+-------------------------------------------------------------------+
|"µm" |micrometre or micron, unit of length equalling 1×10?6 metre |
+---------+-------------------------------------------------------------------+
Table 1: Sample details.
+-------+----+----+---------+--------------------------------------------------+
|Hole ID|From|To |Sample ID|Lith |
+-------+----+----+---------+--------------------------------------------------+
|NKA_163|0.10|1.60|26435 |Plastic Clay |
+-------+----+----+---------+--------------------------------------------------+
|NKA_078|0.00|1.90|26285 |Plastic Clay |
+-------+----+----+---------+--------------------------------------------------+
|NKA_124|0.10|1.90|26367 |Plastic Clay |
+-------+----+----+---------+--------------------------------------------------+
|NKA_148|0.10|2.30|26409 |Plastic Clay |
+-------+----+----+---------+--------------------------------------------------+
|NKA_119|0.65|1.35|26359 |Plastic Clay + Saprolite |
+-------+----+----+---------+--------------------------------------------------+
|NKA_163|1.60|2.60|26436 |Sand |
+-------+----+----+---------+--------------------------------------------------+
|NKA_078|1.90|4.00|26286 |Sand |
+-------+----+----+---------+--------------------------------------------------+
|NKA_124|1.90|3.55|26368 |Sand |
+-------+----+----+---------+--------------------------------------------------+
|NKA_148|2.30|3.30|26410 |Sand |
+-------+----+----+---------+--------------------------------------------------+
|NKA_119|0.00|0.65|26358 |Sand (Secondary alluvial deposits) |
+-------+----+----+---------+--------------------------------------------------+
|NKA_146|0.20|1.00|26407 |Sand (Secondary alluvial deposits) |
+-------+----+----+---------+--------------------------------------------------+
|NKA_166|0.00|1.20|26440 |Sand (Weathering Sand) |
+-------+----+----+---------+--------------------------------------------------+
|NKA_140|0.05|0.90|26394 |Weathering Clay |
+-------+----+----+---------+--------------------------------------------------+
|NKA_121|0.10|0.70|26362 |Weathering Clay |
+-------+----+----+---------+--------------------------------------------------+
|NKA_085|0.00|0.90|26297 |Weathering Clay |
+-------+----+----+---------+--------------------------------------------------+
|NKA_159|0.10|1.80|26428 |Weathering Clay |
+-------+----+----+---------+--------------------------------------------------+
|NKA_166|1.20|2.00|26442 |Weathering Clay + Sand + Gravel + Saprolite |
+-------+----+----+---------+--------------------------------------------------+
|NKA_140|0.90|1.40|26395 |Weathering Clay + Saprolite |
+-------+----+----+---------+--------------------------------------------------+
|NKA_121|0.70|1.20|26364 |Weathering Clay +Ferruginous concretion |
+-------+----+----+---------+--------------------------------------------------+
|NKA_085|0.90|1.40|26298 |Weathering Clay +Ferruginous concretion +Saprolite|
+-------+----+----+---------+--------------------------------------------------+
| |Composite 1 - Plastic clay |
+-------+----+----+---------+--------------------------------------------------+
| |Composite 2 - Sand |
+-------+----+----+---------+--------------------------------------------------+
| |Composite 3 - Weathering clay |
+-------+----+----+---------+--------------------------------------------------+
The table below presents the results of the testwork. Additional work is
required to understand the implications for continuing exploration, as well
comparing this mineral separation work to the granulometric work.
Table 2: Results of PSD and analytical results of the THM%.
+-----------------------------+-------------+---------------+-----------------+
|Composite |Size Fraction|PSD (passing %)|THM% |
+-----------------------------+-------------+---------------+-----------------+
|dComposite 1 - Plastic clay |> 0.5 mm |97.3 |No heavy minerals|
+-----------------------------+-------------+---------------+-----------------+
|0.25 - 0.5 mm |92.8 |0.04 m% |
+-----------------------------+-------------+---------------+-----------------+
|0.063 - 0025 mm |74.4 |0.31 m% |
+-----------------------------+-------------+---------------+-----------------+
|< 0.063 mm |49.4 |0.41 m% |
+-----------------------------+-------------+---------------+-----------------+
|Total |100 |0.76 m% |
+-----------------------------+-------------+---------------+-----------------+
|Composite 2 - Sand |> 1 mm |92.4 |No heavy minerals|
+-----------------------------+-------------+---------------+-----------------+
|0.5 - 1 mm |81.4 |0.08 m% |
+-----------------------------+-------------+---------------+-----------------+
|0.25 - 0.5 mm |68.9 |0.20 m% |
+-----------------------------+-------------+---------------+-----------------+
|0.063 - 0025 mm |41.4 |0.54 m% |
+-----------------------------+-------------+---------------+-----------------+
|< 0.063 mm |20.7 |1.35 m% |
+-----------------------------+-------------+---------------+-----------------+
|Total |100 |2.17 m% |
+-----------------------------+-------------+---------------+-----------------+
| | | | |
+-----------------------------+-------------+---------------+-----------------+
|Composite 3 - Weathering clay|> 1 mm |88.9 |No heavy minerals|
+-----------------------------+-------------+---------------+-----------------+
|0.25 - 1 mm |68.2 |0.36 m% |
+-----------------------------+-------------+---------------+-----------------+
|0.063 - 0025 mm |51.5 |0.28 m% |
+-----------------------------+-------------+---------------+-----------------+
|< 0.063 mm |33.0 |0.25 m% |
+-----------------------------+-------------+---------------+-----------------+
|Total |100 |0.89 m% |
+-----------------------------+-------------+---------------+-----------------+
APPIX: Table 1 (JORC 2012)
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
Criteria JORC Code AMS Commentary
explanation
Sampling
techniques · Nature and · Samples were generated using a
quality of mechanised windowless soil percussion
sampling (e.g. machine to a maximum depth of 4.0 m.
cut channels, · Samples were halved to accommodate
random chips, or duplicate samples.
specific · The locations varied between active
specialised and paleo island and riverbank channels.
industry standard · The sampling methods are sufficient
measurement tools for early-stage exploration.
appropriate to · No handheld XRF instruments were used.
the minerals
under
investigation,
such as down hole
gamma sondes, or
handheld XRF
instruments,
etc). These
examples should
not be taken as
limiting the
broad meaning of
sampling.
· Include · Sampling was
reference to supervised by the
measures taken senior BWA
to ensure geologist.
sample · Samples are
representivity considered
and the representative of
appropriate the surface and
calibration of are sufficient
any measurement for early
tools or exploration
systems used geochemical
surveys.
· Aspects of · Crushing down
the to <6.0mm
determination · Agitation of
of each sample in
mineralisation water until the
that are clayey
Material to the agglomerates had
Public Report. dissolved.
· Gravity
sorting by
shaking table (>
0.063 mm
fractions) and
sluice (< 0063
mm).
· Drying of
preconcentrates
for dry magnetic
separation.
· Heavy liquid
separation (2.82
g/cm³) of
magnetic
separation
products.
· Reporting.
· In cases · 107 holes for
where `industry 193.30 metres to
standard' work a maximum depth
has been done of 4.0 m to
this would be obtain 171
relatively lithologically
simple (e.g. controlled
`reverse samples of
circulation approximately 2
drilling was kg each.
used to obtain · The sample
1 m samples was split in half
from which 3 kg and samples were
was pulverised generally between
to produce a 30 50 - 100 cm in
g charge for length and
fire assay'). lithologically
In other cases controlled.
more · The primary
explanation may sample will be
be required, sent for analysis
such as where and the remaining
there is coarse half is stored in
gold that has plastic bags
inherent under lock and
sampling key for duplicate
problems. analysis and
Unusual future reference.
commodities or · Samples have
mineralisation not been
types (e.g. submitted for
submarine heavy mineral
nodules) may separation
warrant testwork to date.
disclosure of
detailed
information.
Drilling
techniques · Drill type · Closed barrel (windowless) soil
(e.g. core, sampling percussion style handheld
reverse drilling rig was employed to drill the
circulation, open holes.
-hole hammer, · The core barrel is 63mm.
rotary air blast,
auger, Bangka,
sonic, etc) and
details (e.g.
core diameter,
triple or
standard tube,
depth of diamond
tails, face
-sampling bit or
other type,
whether core is
oriented and if
so, by what
method, etc).
Drill sample
recovery · Method of · Core was measured by run length.
recording and · Recovery review is ongoing.
assessing core
and chip sample
recoveries and
results assessed.
· Measures · Specialist
taken to core lifters were
maximise sample employed,
recovery and designed for
ensure sands and
representative gravels.
nature of the · Recovery was
samples. reviewed after
each run by the
geologist.
· Holes were re
-drilled when
recovery was
deemed
insufficient.
· Recovery
review is
ongoing.
· Whether a · No recovery
relationship vs grade work has
exists between been completed
sample recovery yet.
and grade and
whether sample
bias may have
occurred due to
preferential
loss/gain of
fine/coarse
material.
Logging
· Whether core · No mineral resources are being
and chip samples reported.
have been · However, logging data is sufficient to
geologically and support input into estimation.
geotechnically · Recovery review is ongoing.
logged to a level
of detail to
support
appropriate
Mineral Resource
estimation,
mining studies
and metallurgical
studies.
· Whether · Geological
logging is logging is
qualitative or qualitative.
quantitative in
nature. Core
(or costean,
channel, etc)
photography.
· The total · All
length and intersections
percentage of were geologically
the relevant logged.
intersections
logged.
Sub-sampling
techniques and · If core, · Half the hole is sampled.
sample whether cut or · The remaining halves are used as
preparation sawn and whether duplicates for repeat analysis or
quarter, half or reference.
all core taken.
· If non · N/A
-core, whether
riffled, tube
sampled, rotary
split, etc and
whether sampled
wet or dry.
· For all · Samples were
sample types, be submitted for
the nature, HMS preparation
quality and and separation,
appropriateness which is
of the sample considered
preparation appropriate for
technique. the deposit type.
· Quality · Duplicate
control samples were
procedures taken during the
adopted for all drilling and a
sub-sampling percentage will
stages to be submitted for
maximise HMS separation.
representivity · No duplicate
of samples. analysis has been
completed on
separation
testwork to date.
· Measures · However,
taken to ensure duplicate samples
that the have been taken
sampling is to test for
representative representativity.
of the in situ · No duplicate
material analysis has been
collected, completed on
including for separation
instance testwork to date.
results for
field
duplicate/second
-half sampling.
· Whether · Granulometric
sample sizes studies were
are appropriate performed on
to the grain previous sample,
size of the and preliminary
material being analysis shows
sampled. that samples are
appropriate to
the grain size of
the material
being sampled.
· Updated
granulometric
studies have been
performed.
· More
statistical work
is required in
this area.
Quality of
assay data and · The nature, · Samples were submitted for HMS
laboratory quality and preparation and separation, which is
tests appropriateness considered appropriate for the deposit
of the assaying type.
and laboratory · XRD is required to further delineate
procedures used the types of THM within the final sample.
and whether the
technique is
considered
partial or total.
· For · No
geophysical geophysical
tools, tools,
spectrometers, spectrometers or
handheld XRF handheld XRF
instruments, instruments were
etc, the used in the
parameters used exploration work.
in determining
the analysis
including
instrument make
and model,
reading times,
calibrations
factors applied
and their
derivation,
etc.
· Nature of · Sample stream
quality control included,
procedures duplicate, blank
adopted (e.g. and CRM material.
standards,
blanks,
duplicates,
external
laboratory
checks) and
whether
acceptable
levels of
accuracy (i.e.
lack of bias)
and precision
have been
established.
Verification of
sampling and · The · Results not verified by external
assaying verification of independent person at this time.
significant
intersections by
either
independent or
alternative
company
personnel.
· The use of · N/A.
twinned holes.
· · Sample data
Documentation is hand inputted
of primary into Excel and
data, data imported into
entry Micromine for
procedures, validation and 3D
data display.
verification,
data storage
(physical and
electronic)
protocols.
· Discuss any · No adjustment
adjustment to to assay data is
assay data. required.
Location of
data points · Accuracy and · Drillholes were surveyed using a DGPS.
quality of
surveys used to
locate drill
holes (collar and
down-hole
surveys),
trenches, mine
workings and
other locations
used in Mineral
Resource
estimation.
· · Data was
Specification captured and
of the grid located using a
system used. Universal
Transverse
Mercator (UTM).
· The
geographic
coordinate
reference system
is WGS84 Zone 32N
(UTM32N).
· Elevations
are reported in
metres above sea
level.
· Quality and · There is no
adequacy of topographic DTM
topographic at present.
control. · As part of
the collar
survey,
additional points
were collected in
order to create
an accurate
topographic
surface.
· DTM creation
is ongoing.
Data spacing
and · Data spacing · No exploration results are being
distribution for reporting of reported.
Exploration
Results.
· Whether the · N/A.
data spacing
and
distribution is
sufficient to
establish the
degree of
geological and
grade
continuity
appropriate for
the Mineral
Resource and
Ore Reserve
estimation
procedure(s)
and
classifications
applied.
· Whether · N/A.
sample
compositing has
been applied.
Orientation of
data in · Whether the · N/A.
relation to orientation of
geological sampling achieves
structure unbiased sampling
of possible
structures and
the extent to
which this is
known,
considering the
deposit type.
· If the · N/A.
relationship
between the
drilling
orientation and
the orientation
of key
mineralised
structures is
considered to
have introduced
a sampling
bias, this
should be
assessed and
reported if
material.
Sample security
· The measures · Samples were transported from site to
taken to ensure Yaoundé in secure polyweave bags by the
sample security. BWA geologist.
· Samples were taken to Afrigeolabs for
granulometric studies by BWA geologists.
· Samples were sent to Germany via DHL
for heavy mineral separation testwork.
Samples arrived in Germany intact and
without tampering.
Audits or
reviews · The results · Lewis Harvey (AMS Director and Senior
of any audits or Geologist) completed a site visit between
reviews of the 23rd and 29th of May, 2022.
sampling · All findings of the visit are
techniques and considered satisfactory.
data.
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
Criteria JORC Code AMS Comments
explanation
Mineral
tenement and · Type, · BWA has been awarded Permit No. 672, an
land tenure reference exploration licence covering 343 km2 of
status name/number, Central Cameroon in an area known as
location and Nkoteng, for researching the viability of
ownership commercial exploitation of rutile sands and
including other minerals including gold, kyanite,
agreements or ilmenite, and other related minerals.
material issues · The permit is for three years and there
with third is a requirement for a financial commitment
parties such as of £260,000 in year 1 to be followed by
joint ventures, £195,000 in each of years 2 and 3.
partnerships, · The licence was renewed on the 23rd of
overriding September 2022 for a period of two years.
royalties, (Confers article 37 of Law 2016/017 of 14
native title Dec 2010 on the Cameroonian Mining
interests, Code).[LH1]
historical
sites,
wilderness or
national park
and
environmental
settings.
· The · All
security of the tenements are in
tenure held at good standing.
the time of · BWA are
reporting along unaware of any
with any known impediments that
impediments to may affect the
obtaining a licences.
licence to
operate in the
area.
Exploration
done by other · · Rutile was discovered in Cameroon at
parties Acknowledgment the beginning of the century, but it was
and appraisal of only exploited between 1935 and 1955. The
exploration by total recorded production of rutile is
other parties. approximately 15,000 tonnes, with a maximum
of 3,320 tonnes in 1944; exploitation
remained essentially artisanal.
· Historical exploration was carried out
by the BRGM in 1980 and continued until
1991.
· On 28th February 1988, the Ministry of
Mines, Water and Energy (MINMEE) and BRGM
set up the Société d'Étude du Rutile
d'Akonolinga (SERAK) with a capital of 460
million CFA francs held by a 100%
subsidiary of BRGM (SEREM) and the State of
Cameroon in proportions of 52% and 48%
respectively.
· The evaluation of rutile resources in
the Akonolinga region by SERAK has given
the Djaa River some 290,000 tonnes (±
50,000 tonnes) and the Yo River some
240,000 tonnes (± 40,000 tonnes).
· During the same period, reconnaissance
was carried out on the Sélé and Tédé rivers
in the Nanga Eboko region. The campaign
enabled resources to be estimated at: SELE
River: 723,000 tonnes of rutile; TEDE
River: 175,000 tonnes of rutile.
· At the moment the Akonolinga area is
being developed by the French mining
company ERAMET which is active in the
field, while the TEDE and SELE rivers in
the Nanga Eboko area are under licence from
Archidona. The latter company is inactive
in the field.
· No recent data on these two areas is
available.
· Results are not reported in accordance
with JORC (2012) and have not been
independently verified by either BWA or
AMS.
Geology
· Deposit · Rutile, as an important component in
type, geological alluvial or eluvial heavy mineral deposits,
setting and is known in southern Cameroon.
style of · Cameroon was the world's third largest
mineralisation producer of rutile from 1944 to 1950
(16,417 t).
· With an estimated potential of nearly
three million tons, Cameroon has the
world's second-largest supply of rutile
after Sierra Leone.
· Nkoteng is located within the Yaoundé
Domain of the Pan African Belt, which is a
large nappe unit that has been thrusted
southward onto the Congo Craton and is
characterised by low-grade to high-grade
garnet bearing metamorphosed schists,
gneiss and orthogneisses
· Main minerals are garnet, rutile,
kyanite, ilmenite and zircon.
Drill hole
Information · A summary of · Collar coordinates and details of the
all information holes are presented in the table below.
material to the
understanding of +-------+-----+------+------+
the exploration |Heading|Count|Min |Max |
results +-------+-----+------+------+
including a |EAST |107 |815514|822514|
tabulation of +-------+-----+------+------+
the following |NORTH |107 |492007|496992|
information for +-------+-----+------+------+
all Material |RL |107 |526 |581 |
drill holes: +-------+-----+------+------+
· easting |EOH |107 |0.6 |4.0 |
and northing of +-------+-----+------+------+
the drill hole
collar
· elevation
or RL (Reduced
Level -
elevation above
sea level in
metres) of the
drill hole
collar
· dip and
azimuth of the
hole
· down hole
length and
interception
depth
· hole
length.
· If the · N/A.
exclusion of
this
information is
justified on
the basis that
the information
is not Material
and this
exclusion does
not detract
from the
understanding
of the report,
the Competent
Person should
clearly explain
why this is the
case.
Data
aggregation · In reporting · N/A.
methods Exploration
Results,
weighting
averaging
techniques,
maximum and/or
minimum grade
truncations
(e.g. cutting of
high grades) and
cut-off grades
are usually
Material and
should be
stated.
· Where · N/A.
aggregate
intercepts
incorporate
short lengths
of high grade
results and
longer lengths
of low grade
results, the
procedure used
for such
aggregation
should be
stated and some
typical
examples of
such
aggregations
should be shown
in detail.
· The · N/A.
assumptions
used for any
reporting of
metal
equivalent
values should
be clearly
stated.
Relationship
between · These · Mineralisation is a river placer
mineralisation relationships deposit, and the extents and geometry are
widths and are particularly unknown at this time.
intercept important in the · Surface sampling is early stage and
lengths reporting of designed to confirm the presence and
Exploration indication of HMS mineralisation for
Results. targeting further exploration.
· If the · The holes
geometry of the are vertical,
mineralisation and the
with respect to mineralisation
the drill hole is assumed to
angle is known, sub-horizontal
its nature at this time.
should be
reported.
· If it is · The
not known and relationship
only the down between interval
hole lengths and true width
are reported, is not yet know.
there should be · However, the
a clear mineralisation
statement to is sub
this effect -horizontal and
(e.g. `down interval widths
hole length, are likely a
true width not reasonable
known'). reflection of
true width.
Diagrams
· Appropriate · Appropriate scaled diagrams are
maps and attached to the RNS.
sections (with
scales) and
tabulations of
intercepts
should be
included for any
significant
discovery being
reported. These
should include,
but not be
limited to a
plan view of
drill hole
collar locations
and appropriate
sectional views.
Balanced
reporting · Where · All available exploration data for the
comprehensive Nkoteng Project has been collected and
reporting of all reported.
Exploration · The full implications for the data are
Results is not unknown at this time.
practicable,
representative
reporting of
both low and
high grades
and/or widths
should be
practiced to
avoid misleading
reporting of
Exploration
Results.
Other
substantive · Other · No geophysical works have been
exploration exploration completed.
data data, if · Limited mapping works have been
meaningful and completed.
material, should · No additional surface sampling works
be reported have been completed.
including (but · No metallurgical testing or bulk
not limited to): density work have been completed.
geological
observations;
geophysical
survey results;
geochemical
survey results;
bulk samples -
size and method
of treatment;
metallurgical
test results;
bulk density,
groundwater,
geotechnical and
rock
characteristics;
potential
deleterious or
contaminating
substances.
Further work
· The nature · Additional drilling in prospective
and scale of areas to delineate lateral extents.
planned further · Bulk density and granulometric studies.
work (e.g. tests · Metallurgical and recovery testwork.
for lateral
extensions or
depth extensions
or large-scale
step-out
drilling).
· Diagrams · Further work
clearly programmes are
highlighting being developed
the areas of and as such, no
possible diagrams are
extensions, available at
including the this time.
main geological · However,
interpretations exploration is
and future planned over the
drilling areas, whole licence
provided this area.
information is
not
commercially
sensitive
[LH1]Emanuel to confirm
This information was brought to you by Cision http://news.cision.com
END
(END) Dow Jones Newswires
July 19, 2023 02:00 ET (06:00 GMT)
BWA (AQSE:BWAP)
過去 株価チャート
から 12 2024 まで 1 2025
BWA (AQSE:BWAP)
過去 株価チャート
から 1 2024 まで 1 2025
