TAWANA RESOURCES NL - Metallurgical test work confirms high-grade 60%+FE product, Mofe Creek IronRelease Date: 25/06/2013 11:01:00 Code(s): TAW PDF(s):
Metallurgical test work confirms high-grade 60%+FE product, Mofe Creek Iron
Tawana Resources NL
(Incorporated in Australia)
(Registration number ACN 085 166 721)
Share code on the JSE Limited: TAW
Share code on the Australian Stock Exchange Limited: TAW
(“Tawana” or “the Company”)
METALLURGICAL TEST WORK CONFIRMS HIGH-GRADE 60%+ FE PRODUCT, MOFE CREEK IRON
- Excellent metallurgical results received from testing mineralization at the Gofolo
and Koehnko Prospects
- Test work targeted friable itabirite at both Gofolo and Koehnko Prospects
collectively hosting an exploration target of up to 95 Mt (within the >500Mt Global
- Results delivered excellent weight recoveries from 44-57%
- Results also confirmed a 60%+ Fe grade concentrate with low impurities
- Mineralization is up to 40m thick, from surface and friable (free dig) - suggesting
low mining costs
- Processing flow sheet anticipated to be a low cost and simple crushing and gravity
- Desk top economic study has commenced with results to market within
Tawana Resources NL (ASX: TAW) is pleased to announce the results of the first phase of
metallurgical test-work at the Company’s 100% owned Mofe Creek project in Liberia, West
Managing Director Len Kolff said ‘These excellent metallurgical test results demonstrate it
is possible to process mineralization from Gofolo and Koehnko using simple gravity,
without the need for grinding, to produce a high-grade 60%+ Fe product with low
‘The project focus is on soft, weathered friable itabirite mineralization from surface that
does not require grinding. Test work on this material delivered very high weight recoveries
ranging from 44-57%’ he said.
‘Mofe Creek represents an exciting new iron ore discovery in Liberia with proven
upgradeability and scale potential, which is only 20km from the coast’ he added.
Mofe Creek Metallurgical Test-Work Program
All metallurgical test work results have been received for the first phase reconnaissance
programme on soft, friable weathered surface mineralisation and hard, fresh below base
of weathering mineralisation at the Gofolo and Koehnko prospects.
A total of nine composites of mineralised Reverse Circulation (RC) drill chips were shipped
to ALS Iron Ore Technical Centre, Perth, Western Australia for comprehensive test-work of
both magnetic and non-magnetic material including sizing, Heavy Liquid Separation (HLS),
Davis Tube Recovery (DTR), optical mineralogy and XRD analysis.
The nine composites were carefully selected on the basis of lithology, weathering, down-
hole assay and by prospect.
Metallurgical Test-Work Results
Average grade and weight recoveries for the Gofolo and Koehnko prospects alone are
summarised in Table 1 below.
Table 1: Average grade and weight recoveries for the Gofolo and Koehnko prospects.
>3.3SG (inc -45 µm)? Rec Wt% Fe% SiO2% Al203% P% S% TiO2% LOI1000%
ITABIRITE 44 59.58 8.84 1.73 0.05 0.04 0.09 2.81
MIXED ITA & AMPH 27 61.21 7.18 1.78 0.04 0.03 0.10 2.31
>3.3SG (excl -45 µm)? Rec Wt% Fe% SiO2% Al203% P% S% TiO2% LOI1000%
ITABIRITE 57 59.80 9.02 1.61 0.05 0.04 0.08 2.76
MIXED ITA & AMPH 40 61.27 7.23 1.80 0.04 0.03 0.10 2.35
Note 1: Weighted average recoveries and product grades for combined Gofolo and Koehnko prospects at >3.3SG density
including & excluding -45µm size fraction.
Results are also reported for >3.3SG and >3.6SG densities and using the exploration target
size tonnage potentials announced on 18th March 2013. Detailed results by composite and
material type are shown in Appendix 1.
Optical reflected light microscopy and XRD analysis completed by ALS Metallurgy on all 9
composite head samples shows that the dominant mineralogy in the ‘Friable Itabirites’ is
hematite, +/-goethite, minor remnant magnetite and quartz that is generally well
liberated (bar goethite) and contains between 30% to >70% total iron oxides by visual
estimation (see Appendix 2).
Mofe Creek Global Exploration Target >500Mt
A global exploration target size potential of between 360Mt to 670Mt of friable
mineralisation has been estimated for the Mofe Creek project area. This estimate includes
both friable itabirite and friable intermixed itabirite/amphibolite mineralisation. The
estimate does not include hard itabirite, potential blind DSO or additional mineralisation
associated with the target footprints highlighted in yellow which have not had sufficient
field work to date to justify inclusion.
The 95Mt exploration target includes friable itabirite from the Gofolo and Koehnko
Prospects (including Koehnko South) and forms part of the total 90Mt -230Mt friable
itabirite exploration target, within the >500Mt Global Exploration Target.
Refer to ASX Announcement 18 March 2013 for further details.
Mapregarding the Exploration Targets at the Mofe Creek Iron Ore Project have been
removed for SENS purposes.
The -45 µm size fraction may have been artificially increased due to the action of the RC
percussion hammer grinding the sample. Accordingly results have been reviewed both with
and without the -45 µm size fraction due to the significant improvement in weight
recovery (44% to 57%) and grade improvement when removing the -45 micron size fraction.
It is recognised that the second phase of metallurgical test-work should be completed
using diamond drill core to minimise these effects; see a smaller proportion of the -45 µm
size fraction in the sample and accordingly higher weight recovery at higher grade.
However, this represents a first pass reconnaissance programme for proof of concept and
results have successfully demonstrated that a high-grade product is easily achievable using
simple gravity separation only.
All results above are reported for soft, friable mineralisation from surface only. In addition
to the HLS test-work completed on friable ‘weathered’ mineralisation, DTR test-work was
also completed on ‘fresh’ below base of weathering ‘magnetite’ mineralisation. Results
demonstrate that a high-grade +70% Fe magnetite concentrate at >38% weight recovery
with low contaminants is readily achievable at a -45 micron grind size. Although this is not
a key focus for the Company, it provides additional project scope.
About Mofe Creek Iron Ore Project
The Mofe Creek Project is located within one of Liberia’s historic premier iron ore mining
districts. The project is 10km along strike from the abandoned Bomi Hills mine (>50Mt DSO
@ 65% Fe plus SF), 80km along strike from the historic Bong Mine (>275Mt @ 38% Fe), 45km
from the Mano River mine (100Mt @ 52% Fe) and 20km from the Bea Mountain resource
(>100Mt @ 45% Fe).
The Project is exceptionally well located being approximately 20km from the coast for
potential haul-road trucking or conveyor of product to the coast and transhipment via
barge to deeper water for on shipment. Other possible infrastructure solutions exist; road
or rail to the deep water port of Monrovia via a 100km sealed road from the central
licence area or a 65km decommissioned standard-gauge iron ore railway alignment + from
the Bomi Hills mine to the port of Monrovia; 17km east from the easternmost magnetic
Map regarding Historic ‘Western Cluster’ iron ore province and associated deposits and
infrastructure over regional aeromagnetics has been removed for SENS purposes.
Detailed information on all aspects of Tawana’s projects can be found on the Company’s
website www.tawana.com.au. For further information please contact:
Lennard Kolff van Oosterwijk
Tel: +61 7 35102115, Mob: +61 424942589
The information in this report that relates to Exploration Results, Mineral Resources or Ore
Reserves is based on information compiled by Lennard Kolff van Oosterwijk, who is a
Member of the Australian Institute of Geoscientists included in a list promulgated by the
ASX from time to time. Lennard Kolff van Oosterwijk is a full-time employee of the
company and 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 in the 2004 Edition of the ‘Australasian Code for
Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Lennard Kolff van
Oosterwijk consents to the inclusion in the report of the matters based on his information
in the form and context in which it appears.
All appendices (below) have been removed for SENS purposes. Please refer to the Tawana
Appendix 1 –Metallurgical Test-Work Results
Appendix 2 – Selected Composite Reflected Light Micrographs
Appendix 3: Gofolo Prospect Cross section
Appendix 4: Koehnko Cross Section
Len Kolff Managing Director
Julian Babarczy Non-Executive Director
Matthew Bowles Non-Executive Director
Winton Willesee /Aaron Finlay Joint Company Secretary
Issued Shares: 927m
Market Cap: $5.6m
Cash (Q1 2013): $1.25m
ASX CODE: TAW
- New Iron ore Discovery – Liberia, West Africa. >500Mt Exploration target
- Experienced Board and Management
Mofe Creek Iron Ore Project, Liberia
- High grade 60%+ Fe grade
- 65 km prospective strike
- 20km to coast, adjacent to rail alignment 65km to port
- 25km along strike from +50 Mt historic Bomi Hills DSO mine
Sinoe Gold Project, Liberia
- Highly prospective Birimian gold structures on Dugbe shear
- Along strike from 3.8Moz Dugbe gold project
Rakana JV (6.7%), South Africa
- Meletse Iron Ore and Avontuur Manganese JV managed by Aquila Resources
Highpoint Plaza, Suite 4, ASO
240 Waterworks Rd, PO Box 551
Ashgrove, QLD 4060
Phone: +61 7 3510 2115
Facsimile: +61 8 9287 4334
PricewaterhouseCoopers Corporate Finance (Pty) Ltd
Date: 25/06/2013 11:01:00 Produced by the JSE SENS Department. The SENS service is an information dissemination service administered by the JSE Limited ('JSE').
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