Bougouni Lithium Project Update
Further broad, high- grade intersections at West Zone ahead of maiden JORC resource
Further broad, high- grade intersections at West Zone ahead of maiden JORC resource
- Diamond drilling at Goulamina West Zone defines exceptionally wide and high grade intersections;
- 82m @ 1.64 % Li2O from 18m
- 51m @ 1.93 % Li2O from 127m
including 22m @ 2.23 % Li2O - 49m @ 1.68 % Li2O from 89m
Including 13m @ 2.09 % Li2O - 36m @ 1.70 % Li2O from 91m
including 10m @ 2.03 % Li2O
- West Zone remains open along strike and at depth.
- Strong potential to add significant tonnages of shallow, high grade lithium mineralisation with more drilling.
- Resource evaluation and project studies commenced
- Maiden JORC-compliant resource expected in October
Birimian Limited (ASX:BGS; “Birimian” and “Company” - https://www.commodity-tv.net/c/mid,2697,Company_Presentation/?v=296909) reports further high-grade results from its maiden drilling program at its 100%-owned Bougouni Lithium Project (“Project”) in southern Mali.
The Project comprises a large license area spanning some 250km2, and hosts the high-grade, potential bulk-tonnage Goulamina lithium deposit.
Further highly promising results have now been received for five (5) diamond holes evaluating along strike and down dip at Goulamina Main and West Zones (Figure 1). Of note, substantial intersections, including very broad widths at shallow depths, further confirm the significant upside potential of the exciting new West Zone discovery.
Figure 1. Goulamina Deposit. Plan view of lithium pegmatite with drill hole locations and reported drill intersections (red).
West Zone Extensions
Results from diamond holes drilled at the West Zone (Figure 1 and Table1) define high grade extensions along strike and to depth in the northern and central portion of this substantial mineralised zone. Results include;
- 82m @ 1.64 % Li2O from 18m
- 51m @ 1.93 % Li2O from 127m
including 22m @ 2.23 % Li2O - 49m @ 1.68 % Li2O from 89m
including 13m @ 2.09 % Li2O - 36m @ 1.70 % Li2O from 91m
including 10m @ 2.03 % Li2O
Drill holes into the West Zone have confirmed wide and high grade lithium mineralisation over approximately 300m of strike. The latest results include the widest and highest grade intersections reported to-date from Goulamina. These zones remain open along strike and to depth, implying significant scope for extensions along trend. Birimian believes there is excellent potential to add significant tonnages of high grade mineralisation with more drilling at West Zone.
Detailed drilling at Main Zone has defined shallow, continuous, high grade lithium mineralisation over approximately 700 metre of strike, and beyond 150m down dip (see Figures 1 and 2). Assays from the final deeper diamond hole at the southern-most extent of Main Zone ; 22m @ 1.11 % Li2O from 128m (bulked interval), confirm mineralisation continues at depth beyond the present limits of drilling in this area.
Exciting Next Steps
A total of 50 holes for 5,179m of drilling have been completed at the Main and West Zones. This first phase work program provides the geological and grade data required to estimate the maiden resource at Goulamina. Cube Consulting and CSA Global have been engaged to undertake an independent resource estimation and preliminary economic mining study for the Project. Final data compilation and validation is progressing well, with the maiden JORC-compliant resource expected later this month.
Scoping level studies have also commenced with Como Engineers (Como) engaged to determine the key processing parameters and estimate capital costs, which will be used to define subsequent phases of detailed work at the Bougouni Project. Como has significant experience in process design and engineering of spodumene concentration plants, including recently undertaking the Definitive Feasibility Study for Pilbara Minerals’ Pilgangoora Lithium Project.
Digby Wells Environmental (Digby Wells) personnel are in the field undertaking the initial social and environmental assessment for areas around the potential mine and processing site at Goulamina. This preliminary study will identify key environmental and social considerations, and will enable Digby Wells to prepare the Terms of Reference for the Environmental and Social Impact Assessment (ESIA) which
Figure 2. Goulamina Deposit cross sections.
will be utilised to formulate an appropriate plan for completion of necessary base line studies and submission of the formal project ESIA for mine permitting.
Mineralisation is open along strike and to depth outside the present limits of drill coverage. Further drilling is planned to investigate extensions to mineralisation during the next phase infill and step-out drilling program. As previously advised, to facilitate completion of core processing and inclusion of all relevant data in the pending resource estimation, drilling has paused briefly and is expected to re-commence in November when scoping work has been substantially completed.
Goulamina – A Large Tonnage High Grade Lithium Deposit
The Goulamina deposit possesses significant high-grade and bulk tonnage potential. It is situated in close proximity to a sealed highway, grid power and abundant water, with the Selingue hydroelectric power station located some 45km to the north west (Figure 3).
The Project's maiden JORC-compliant resource is expected later this month, and Scoping Study by December 2016.
The deposit has substantial scope to expand into a large tonnage and high grade lithium project significantly exceeding early expectations. Importantly, mineralisation is open at both zones and there is significant untapped exploration potential within the 250km2 project area. Birimian remains confident that over the course of subsequent drilling campaigns, it will progressively increase the lithia inventory at Goulamina; ranking the deposit towards the upper end of contained lithia globally.
Previous processing test work has confirmed the viability of the pegmatite at Goulamina to produce a high quality chemical grade lithium concentrate. Test results show good spodumene (lithium) recoveries (84.7%) and high mass yield to produce a high quality, chemical grade (6.7%) spodumene concentrate. For reference, concentrate grades of 6% are typically demanded by global lithium carbonate producers.
Figure 3. Goulamina Location and Infrastructure.
For further information contact:
Mr Kevin Joyce
Managing Director
08 9286 3045
[email protected]
In Europe:
Swiss Resource Capital AG
Jochen Staiger
[email protected]
www.resource.capital.ch
Competent Persons Declaration
The information in this announcement that relates to exploration results and the Exploration Target is based on information compiled by or under the supervision of Kevin Anthony Joyce. Mr Joyce is Managing Director of Birimian Limited and a Member of the Australian Institute of Geoscientists. Mr Joyce has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and the activity he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting of Exploration Results. Mr Joyce consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
Previous Reported Results
There is information in this announcement relating to previous Exploration Results at the Bougouni Project. The Company confirms that it is not aware of any other new information or data that materially affects the information included in the original market announcement, and that all material assumptions and technical parameters have not materially changed. The Company confirms that the form and context in which the Competent Person’s findings are presented have not been materially modified from the original market announcement.
Forward Looking Statements
Statements regarding plans with respect to the Company’s mineral properties are forward looking statements. There can be no assurance that the Company’s plans for development of its mineral properties will proceed as expected. There can be no assurance that the Company will be able to confirm the presence of mineral deposits, that any mineralisation will prove to be economic or that a mine will successfully be developed on any of the Company’s mineral properties.
Table 1. Reported drill holes at the Bougouni Project, Mali, and significant intercepts.
Hole_ID | North | Eas t | Dip | Az m | Hole Depth | From | To | Width | % L i2O |
GMDD0 04 | 1254 500 | 6138 48 | -‐60 | 265 | 195 | 128 | 133 | 5 | 1.8 |
and |
|
|
|
|
| 139 | 14 1 | 2 | 1.8 6 |
and |
|
|
|
|
| 14 5 | 150 | 5 | 1.4 7 |
GMDD0 05 | 1254 750 | 6134 25 | -‐60 | 265 | 125 | 18 | 10 0 | 82 | 1.64 |
GMDD0 06 | 1254 650 | 613560 | -‐60 | 265 | 165 | 91 | 127 | 36 | 1.7 |
and |
|
|
|
|
| 14 9 | 157 | 8 | 1.5 |
GMDD0 07 | 1254 700 | 61354 0 | -‐60 | 265 | 18 0 | 89 | 138 | 49 | 1.68 |
and |
|
|
|
|
| 150 | 162 | 12 | 1.4 4 |
GMDD0 08 | 1254 750 | 6134 75 | -‐60 | 265 | 18 0 | 72 | 123 | 51 | 1.93 |
and |
|
|
|
|
| 14 1 | 14 6 | 5 | 1.11 |
- Intercepts are calculated as weighted average grades of 1m sample intervals using a 1% Li 2O cut-‐ off, allowing for 2m maximum internal waste.
- Intercepts are reported f rom 1m samples submitted to ALS Bamako for analysis by Sodium Fusion ICP.
- QAQC standards, blanks and duplicate samples were routinely inserted/ collected at every 10th sample.
Table 2. Reverse Circulation and diamond drill holes at the Bougouni Project, Mali.
Hole_ID | North | Eas t | Dip | Az m | Hole Depth | Comment |
GMRC0 01 | 1254 750 | 613630 | -‐60 | 265 | 78 | Reported 12 July 2016 |
GMRC0 02 | 1254 750 | 61368 0 | -‐60 | 265 | 117 | Reported 12 July 2016 |
GMRC0 03 | 1254 800 | 613615 | -‐60 | 265 | 60 | Reported 12 July 2016 |
GMRC0 04 | 1254 800 | 613660 | -‐60 | 265 | 120 | Reported 12 July 2016 |
GMRC0 05 | 1254 850 | 61360 0 | -‐60 | 265 | 60 | Reported 12 July 2016 |
GMRC0 06 | 1254 850 | 61364 5 | -‐60 | 265 | 117 | Reported 12 July 2016 |
GMRC0 07 | 1254 900 | 613570 | -‐60 | 265 | 57 | Reported 12 July 2016 |
GMRC0 08 | 1254 900 | 613615 | -‐60 | 265 | 10 5 | Reported 21 July 2016 |
GMRC0 09 | 1254 950 | 613560 | -‐60 | 265 | 72 | Reported 21 July 2016 |
GMRC0 10 | 1254 950 | 613610 | -‐60 | 265 | 10 2 | Reported 21 July 2016 |
GMRC0 11 | 1254 700 | 613650 | -‐60 | 265 | 72 | Reported 21 July 2016 |
GMRC0 12D | 1254 700 | 613695 | -‐60 | 265 | 14 0 | Reported 28 September 2016 |
GMRC0 13 | 1254 650 | 613665 | -‐60 | 265 | 64 | Reported 21 July 2016 |
GMRC0 14 | 1254 650 | 613710 | -‐60 | 265 | 110 | Reported 21 July 2016 |
GMRC0 15 | 1254 600 | 61368 5 | -‐60 | 265 | 57 | Reported 11 August 2016 |
GMRC0 16 | 1254 600 | 613730 | -‐60 | 265 | 10 2 | Reported 11 August 2016 |
GMRC0 17 | 1254 550 | 613710 | -‐60 | 265 | 60 | Reported 11 August 2016 |
GMRC0 18 | 1254 550 | 613760 | -‐60 | 265 | 10 8 | Reported 11 August 2016 |
GMRC0 19 | 1254 500 | 613750 | -‐60 | 265 | 64 | Reported 11 August 2016 |
GMRC0 20 | 1254 500 | 6138 01 | -‐60 | 265 | 75 | Reported 11 August 2016 |
GMRC0 21 | 1254 500 | 6138 00 | -‐60 | 265 | 96 | Reported 11 August 2016 |
GMRC0 22 | 1254 450 | 6138 00 | -‐60 | 265 | 93 | Reported 11 August 2016 |
GMRC0 23 | 1254 450 | 6138 45 | -‐60 | 265 | 125 | Reported 11 August 2016 |
GMRC0 24 | 1254 400 | 6138 25 | -‐60 | 265 | 75 | Reported 11 August 2016 |
GMRC0 25 | 1254 400 | 6138 70 | -‐60 | 265 | 114 | Reported 11 August 2016 |
GMRC0 26 | 1254 950 | 613510 | -‐60 | 265 | 54 | Reported 11 August 2016 |
GMRC0 27D | 1254 900 | 613665 | -‐60 | 265 | 18 0 | Reported 28 September 2016 |
GMRC0 28 D | 1254 800 | 613715 | -‐60 | 265 | 193 | Reported 28 September 2016 |
GMRC0 29D | 1254 700 | 613750 | -‐60 | 265 | 198 | Reported 28 September 2016 |
GMRC0 30 D | 1254 600 | 61378 5 | -‐60 | 265 | 18 0 | Reported 28 September 2016 |
GMRC0 31D | 1254 500 | 6138 50 | -‐60 | 265 | 110 | Re-‐ drill as GMDD004 |
GMRC0 32 | 1254 650 | 6134 70 | -‐60 | 265 | 63 | Reported 11 August 2016 |
GMRC0 33 | 1254 650 | 613510 | -‐60 | 265 | 10 8 | Reported 11 August 2016 |
GMRC0 34 | 1254 690 | 61358 0 | -‐60 | 18 0 | 51 | Reported 11 August 2016 |
GMRC0 35 | 1254 600 | 613620 | -‐60 | 265 | 69 | Reported 31 August 2017 |
GMRC0 36 | 1254 550 | 613530 | -‐60 | 265 | 48 | Reported 31 August 2018 |
GMRC0 37 | 1254 550 | 613555 | -‐60 | 265 | 75 | Reported 31 August 2019 |
GMRC0 38 | 1254 600 | 6134 95 | -‐60 | 265 | 57 | Reported 31 August 2020 |
GMRC0 39 | 1254 600 | 61354 0 | -‐60 | 265 | 84 | Reported 31 August 2021 |
GMRC0 40 | 1254 700 | 6134 50 | -‐60 | 265 | 80 | Reported 31 August 2022 |
GMRC0 41 | 1254 700 | 6134 95 | -‐60 | 265 | 120 | Reported 31 August 2023 |
GMRC0 42 | 1254 550 | 61360 0 | -‐60 | 265 | 120 | Reported 31 August 2024 |
GMDD0 01 | 1254 800 | 61364 0 | -‐60 | 265 | 10 0 | Reported 28 September 2016 |
GMDD0 02 | 1254 700 | 613675 | -‐60 | 265 | 10 0 .6 | Reported 28 September 2016 |
GMDD0 03 | 1254 600 | 613710 | -‐60 | 265 | 10 0 | Reported 28 September 2016 |
GMDD0 04 | 1254 500 | 6138 48 | -‐60 | 265 | 195 | This announcement |
GMDD0 05 | 1254 750 | 6134 25 | -‐60 | 265 | 125 | This announcement |
GMDD0 06 | 1254 650 | 613560 | -‐60 | 265 | 165 | This announcement |
GMDD0 07 | 1254 700 | 61354 0 | -‐60 | 265 | 18 0 | This announcement |
GMDD0 08 | 1254 750 | 6134 75 | -‐60 | 265 | 18 0 | This announcement |
JORC Code, 2012 Edition – Table 1
Section 1 Sampling Techniques and Data
Criteria | JORC Code explanation | Commentary |
Sampling techniques |
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Drilling techniques |
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Drill sample recovery |
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Logging |
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Sub-sampling techniques and sample preparation |
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Quality of assay data and laboratory tests |
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Verification of sampling and assaying |
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Location of data points |
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Data spacing and distribution |
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Orientation of data in relation to geological structure |
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Sample security |
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Audits or reviews |
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Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
Criteria | JORC Code explanation | Commentary |
Mineral tenement and land tenure status |
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Exploration done by other parties |
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Geology |
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Drill hole Information |
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Data aggregation methods |
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Relationship between mineralisation widths and intercept lengths |
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Diagrams |
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Balanced reporting |
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Other substantive exploration data |
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Further work |
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