AVZ prepares for Manono Mineral Resource Update with more high-grade results from Roche Dure
- AVZ’s extensional drilling at Roche Dure identifies additional high-grade lithium and tin mineralisation, pointing to further resource growth on the Company’s maiden Mineral Resource announced in early August 2018.
- MO18DD044 intersected 273.45m* @ 1.73% Li2O & 953ppm Sn from 50.55m down-hole on drill section 7100mN
- MO18DD043 intersected 259.3m* @ 1.76% Li2O & 1015ppm Sn from 41.00m down-hole, approximately 25m south of drill section 7200mN
* Down-hole length. Additional drilling is required to confirm the true thickness of the pegmatites.
AVZ’s Managing Director Mr Nigel Ferguson commented: “Continued drilling at Roche Dure is increasing our knowledge of the deposit along strike, both to the south-west and north-east of the central part of the main resource area. With these new results, we will very likely see an increase in resource tonnages and category at Roche Dure given they were drilled outside the maiden resource 'area of influence'. The assays reported again show excellent lithium mineralisation.
We are very happy that the scale of the Roche Dure mineralisation continues to increase and the grade remains consistent with intersections from the earlier drilling. We look forward to releasing an updated Mineral Resource Estimate for Manono before the end of the year.”
AVZ Minerals Limited (ASX: AVZ) is pleased to report it has received further highgrade results from its Mineral Resource drilling at the Manono Lithium Project in the Democratic Republic of Congo. It has received results from a further eight diamond drill holes, none of which were not included in the Maiden JORC Mineral Resource estimate reported in early August 2018.
Results from the latest eight holes have intersected broad intervals of mineralisation, with the intersections of individual pegmatite bodies up to 259.30m (down-hole length; true thickness not yet known) in MO18DD043. Hole MO18DD045 seems to show down-faulting in the deeper part of the orebody that is not yet fully understood and which will require further drilling for interpretation. The Roche Dure orebody continues to grow steadily in size.
The grades of some of the pegmatite intervals in the new infill holes show zones of lower lithium grade but drilling also continues to demonstrate substantial thicknesses of higher-grade material ranging in depth from just under the weathered zones to deeper in the deposit. Again, there appears to be no zonation in the pegmatite intersected by these eight new holes. Figures 2 to 7 show these intervals schematically.
AVZ’s infill drilling is expected to be completed late in November, with an update to the Mineral Resource Estimate for Manono due before the end of the year.
AVZ Continues to Drill Thick High Grade Lithium Intercepts
- Separately, the maximum lithium intercept achieved was 336.81m. the highest grade of Li2O encountered was 5.60% and the highest grade of tin recorded was 7,790ppm
- MO18DD035 intersected 286.75m* @ 1.74% Li2O & 822ppm Sn from 54.55m down-hole on drill section 7200mN (including 4.8m of core loss)
- MO18DD036 intersected 236.47m* @ 1.70% Li2O & 422ppm Sn from 154.00m down-hole on drill section 7400mN (including 2.65m of internal waste)
- MO18DD037 intersected 325.17m* @ 1.33% Li2O & 596ppm Sn from 78.14m down-hole between drill section 7400mN and 7500mN (including 3.72m of internal waste)
- MO18DD038 intersected 257.45m* @ 1.46% Li2O & 461ppm Sn from 137.55m down-hole on drill section 7300mN
- MO18DD039 intersected 183.11m* @ 1.44% Li2O & 629ppm Sn from 154.95m down-hole on drill section 6800mN
- MO18DD040 intersected 287.95m* @ 1.42% Li2O & 219ppm Sn from 183.82m down-hole on drill section 7300mN
- MO18DD041 intersected 336.81m* @ 1.31% Li2O & 551ppm Sn from 88.30m down-hole between drill section 7400mN and 7500mN (including 2.76m of internal waste)
- MO18DD036 has been deepened from 407.03m to 532m confirming the presence of more pegmatite but assays for the depth extension are still pending
* Down-hole length. Additional drilling is required to confirm the true-thickness of the pegmatites.
AVZ’s Managing Director Mr Nigel Ferguson commented: “Drilling is continuing as planned at Roche Dure. Some of these new results are located within the area recently modelled for the Maiden Mineral Resource estimate, as well as from step out drilling along the strike of the pegmatite and outside the mineral resource area. The assay results noted here continue to confirm lithium and tin mineralisation in the modelled zone, demonstrating the homogenous nature of the pegmatite. Additionally, new results from unmodeled areas have also intersected mineralisation, adding to the scale of the Roche Dure mineralisation. These results will be captured in the next mineral resource calculation.”
AVZ Minerals Limited (ASX: AVZ) is pleased to provide an update on its Mineral Resource drilling of the Manono Lithium Project in the Democratic Republic of Congo. The Company has recently received new drilling results, resulting in this public announcement reporting the results from 7 drill-holes. These new drilling results were not included in the maiden JORC Mineral Resource estimate reported in early August 2018.
The new drilling results reported here are from a combination of infill holes within the area recently reported as the maiden Mineral Resource, as well as from new holes drilled towards the edge of this area. Recent assays from the 7 newly validated cored drill holes reported include data from drill holes MO18DD035 to MO18DD041, excluding the recently deepened hole MO18DD036, which confirmed the presence of additional mineralised pegmatite, but for which assay results are still pending.
All these new holes have intersected broad intervals of mineralisation, with the intersections of individual pegmatite bodies up to 336.81m (down-hole length; true thickness not yet known) in MO18DD041. Hole MO18DD036 has been deepened after later drilling intersected what looked like a possibly deeper part of the lower Roche Dure pegmatite on adjoining sections. Assays for this hole are only reported to a depth of 392.47m with the depth extension results for the deeper pegmatitic mass still pending and to be reported on later. Hole MO18DD041 on the section north of hole MO18DD036 intersected a total of 336.81m of pegmatite confirming the presence of this lower, thicker part of the pegmatite in this area.
The grades of the pegmatite intervals in the new infill holes within the modelled area still demonstrate strong spodumene mineralisation such as that in hole MO18DD035 on section 7200mN which has intersected 286.75m of pegmatite (down-hole length; true thickness not yet known) with a robust average grade of 1.74% Li2O. Figures 2 to 6 show these intervals schematically.
Drilling continues with four rigs on site and a total of some 20,880m completed to date. It is expected that a further amount of drilling, approximately 8,000m will be completed prior to year end, including geotechnical and metallurgical drilling and to allow further resource calculations to be undertaken.
Further assay results will be released to the market as they become available.
Maiden Mineral Resource Establishes Manono as The World’s Largest Hard Rock Spodumene Deposit
INITIAL MINERAL RESOURCE FOR THE ROCHE DURE PEGMATITE IS REPORTED AS 259.9MT AT 1.63% LI2O CONTAINED WITHIN APPROXIMATELY 50% OF THE TOTAL STRIKE OF THE ROCHE DURE PEGMATITE
SCOPING STUDY PROGRESSING WELL TO FAST-TRACK PROJECT DEVELOPMENT
- Total Measured, Indicated and Inferred Resources of 259.9Mt grading 1.63% Li2O (spodumene) containing 4.25 million tonnes of lithium oxide (Li2O), 219Kt of tin as cassiterite grading 844ppm Sn and 11.2Kt Tantalum grading 43ppm Ta2O5 (Tantalum);
- Measured Resources of 43Mt grading 1.71% Li2O, 871ppm Sn and 42ppm Ta2O5; Indicated Resources of 104.7Mt grading 1.64% Li2O, 844ppm Sn and 43ppm Ta2O5
- In addition to Sn, Ta2O5 and Li2O, MSA has also estimated Fe2O3, a potentially deleterious element, at an average of 0.88% Fe2O3, which when compared to other ASX-listed hard rock deposits, is the lowest reported.
- The initial Mineral Resource was estimated on an approximate 980m strike length or 50% of the Roche Dure pegmatite utilising assay data from 31 drill holes and geological data from 42 drill holes. The balance of the assay data (11 drill holes) will be incorporated into the next Mineral Resource estimate.
- Drilling is continuing with a focus on mapped extensions to the north and south of the current Mineral Resource area
AVZ’s Managing Director, Nigel Ferguson said: “This is a significant advance for the project. Manono is now confirmed as the world’s largest lithium deposit, with the second highest grade globally. Additionally, there is considerable advantage in having a significant tin component which should help to reduce operating costs by providing a valuable by-product credit. Deleterious elements are all low and we are encouraged by the results of the ongoing drilling, some of which were not included in this Mineral Resource. This work clearly demonstrates that Manono will continue to grow and potentially become a world leading source of lithium.”
Australian listed lithium metal Company, AVZ Minerals Ltd (ASX: AVZ) is pleased to advise that it has confirmed the potential of its 60% owned Manono Lithium-Tin-Tantalum Project in the DRC’s Tanganyika Province to become a world leader in the global lithium market after announcing a world class maiden Mineral Resource.
The Mineral Resource stated as 259.9Mt grading 1.63% Li2O (spodumene) is further categorized into Measured, Indicated and Inferred Mineral Resources as shown in Table 3.
The initial Mineral Resource includes assay data from only 31 drill holes on 980m of strike length and geological data from 42 drill holes to enable interpretation of a geological model (Refer Figure 1). All drill holes except two, MO17DD001 and MO17DD002, have been completed in 2018 with commencement of the drilling program in February this year. A total of 13,576m of diamond core, mainly PQ (3,129m) and HQ (10,447m) in size, has been completed at the Roche Dure pegmatite.
Recent and ongoing drilling also clearly indicates the potential for the Mineral Resource to increase given the assay data from only an approximate 50% of the total strike length at Roche Dure has been included in this statement. AVZ still needs to drill test the Mpete and Tempete pegmatites at Kitotolo Sector just north of Roche Dure and the Carrier de L’Est pegmatite at Manono sector.
The overall Roche Dure Mineral Resource now comprises some 4.25 million tonnes of lithium oxide (Li2O), 219Kt of tin as cassiterite grading 844ppm Sn and 11.2Kt of tantalum grading 43ppm Ta2O5.
Current drilling at Manono, is focusing on the northern and southern extensions to the Roche Dure Pegmatite, which are located outside of the currently defined Mineral Resource. Drilling in these zones is likely to result in an increase in the Mineral Resource tonnage.
The ongoing drilling and this maiden Mineral Resource at Roche Dure demonstrates that AVZ is able to delineate a globally significant hard-rock lithium deposit at Manono.
AVZ Drills 223.75m* @ 1.44% Li2O & 584ppm Sn at the Roche Dure Pegmatite
- Maiden JORC estimate includes recent assays from 12 newly validated cored drillholes reported below. These are MO18DD021 to MO18DD034, excluding MO18DD032 and MO18DD033.
- MO18DD025 intersected 223.75m* @ 1.44% Li2O & 584ppm Sn from 114.2m down-hole on drill section 7300mN
- MO18DD021 intersected 181.00m* @ 1.71% Li2O & 983ppm Sn from 40m down-hole followed by 44.60m* @ 1.74% Li2O & 850ppm Sn from 235m down-hole on drill section 7200mN
- MO18DD022 intersected 149.84m* @ 1.56% Li2O and 1092ppm Sn from 46m down-hole on drill section 6800mN (excluding1.83m internal waste)
- MO18DD023 intersected 92.85m* @ 1.00% Li2O and 1588ppm Sn from 3.80m down-hole on drill section 6700mN
- MO18DD024 intersected 83.87m* @ 1.06% Li2O & 1261ppm Sn from 65.17m down-hole followed by 52.14m* @0.80% Li2O & 1235pm Sn from 149.04m down-hole on drill section 6600mN
- MO18DD026 intersected 169.79m* @ 0.88% Li2O and 303ppm Sn from 169.1m down-hole on drill section 7300mN
- MO18DD027 intersected 198.32m* @ 1.72% Li2O and 872ppm Sn from 68.0m down-hole on drill section 7300mN
- MO18DD028 intersected 250.3m* @ 1.03% Li2O and 405ppm Sn from 130.85m down-hole on drill section 7200mN
- MO18DD029 intersected 141.43m* @ 1.14% Li2O and 753ppm Sn from 87.53m down-hole followed by 103.52m* @ 1.41% Li2O and 590ppm Sn from 295.07m down-hole approximately 30m south of drill section 7500mN
- MO18DD030 intersected 186.63m* @ 1.11% Li2O and 652ppm Sn from 113.5m down-hole followed by 105.9m* @ 1.21% Li2O and 297ppm Sn from 295.07m down-hole on drill section 7400mN
- MO18DD031 intersected 236.86m* @ 1.56% Li2O and 499ppm Sn from 71.46m down-hole on drill section 7300mN
- MO18DD032 - Geology used in resource model but assays still pending
- MO18DD033 - Hole abandoned at top of weathered pegmatite at 81.3m. No samples recovered. Geology used in model. The hole was drilled approximately 30m south of Section 7500mN
- MO18DD034 intersected 238.39m* @ 1.10% Li2O and 603ppm Sn from 121.56m down-hole on drill section 7300mN
* Down-hole length. Additional drilling is required to confirm the true-thickness of the pegmatites.
AVZ’s Managing Director Mr Nigel Ferguson commented: “This large batch of newly received assays from recent drilling has confirmed the widespread presence of strong lithium mineralisation at Roche Dure. A typical example is from hole MO18DD025 which has produced another world class drill intercept. This recent drilling has extended the known strike of defined mineralised pegmatite both to the north and further south to 980m strike length at the Roche Dure Prospect. We are particularly pleased with these new results which will be added to the ongoing resource calculation. It is interesting to note that with hole MO18DD030 there seems to be evidence of a new, large mineralised body beneath the Roche Dure body which will require future follow-up work. Infill drilling continues along strike in both directions and additional assay results will be released as they are received and verified.”
AVZ Minerals Limited (ASX: AVZ) is pleased to provide an update on mineral resource drilling of the Manono Lithium Project in the Democratic Republic of Congo. The Company has received a large number of assay results in a short period of time, resulting in this public announcement including results from 12 drill-holes, with some re-assays for another drill-hole (MO18DD032) pending. These results are included in the current JORC Resource Estimate to be reported on separately.
Apart from MO18DD033, which had to be abandoned in broken ground shortly after penetrating the Roche-Dure pegmatite, all the holes intersected broad intervals of mineralisation, with the intersections of individual pegmatite bodies of up to 223.75m (down-hole length; true thickness not yet known) in MO18DD025. Also noteworthy was the intersection achieved by MO18DD030 which intersected a total of 320.94m of pegmatite in four separate bodies across a 365.57m interval and which may indicate the presence of a secondary, and previously unrecorded, large pegmatite under the main Roche Dure orebody.
The grades of the pegmatite intervals show more variation than has been evident in previous drill-holes however a distinct portion of the pegmatite intersected is comprised of broad intervals of high-grade spodumene mineralisation, evident in all drill holes that were completed as planned (Figures 2 to 8).
Quarterly Report for the period ending 30 June 2018
Manono Lithium Project, DRC
- JORC compliant Mineral Resource Estimate to be completed by end of July 2018
- AVZ commences Scoping Study for Manono Project, expected to be completed in August 2018
- Positive preliminary metallurgical test work results for Manono Lithium Project reported
- Drilling on track, initial 20,000m program due for completion in September
- Results returned a new record intercept of 341.62m* which included a fresh-rock intersection of 302.10m* @ 1.54% Li2O and 875ppm Sn
*Down-hole length. Additional drilling is required to confirm the true-thickness of the pegmatite.
- Agreement with JNS Capital Corp entered into for the provision of marketing and promotional services in North America
- AVZ’s contract with strategic advisor Airguide renewed for a further 12 months
AVZ Minerals Limited (ASX: AVZ) (the “Company”) is pleased to provide the following report on activities for the quarter ending 30 June 2018.
MANONO LITHIUM PROJECT, DRC
AVZ engaged Perth-based independent engineering group CPC Engineering (“CPC”) to complete a Scoping Study for the Manono Lithium Project.
The Scoping Study aims to prepare initial capital and operating cost estimates based on a typical hard rock spodumene concentrate process flowsheet. As part of the study a high-level review of options to upgrade the spodumene concentrate will be undertaken, with the aim to minimise transportation costs.
A second high-level review will investigate opportunities to produce a cassiterite (SnO2) concentrate as a secondary product stream. The estimate will capture the process plant, process and non-process infrastructure.
Positive Metallurgical Test Work
AVZ provided an update on initial and preliminary metallurgical test work completed on two samples of coarse assay sample reject material from drill holes MO17DD001 and MO17DD002, from the Roche Dure Pegmatite, Manono Lithium Project. The test work was performed at Nagrom Laboratories in Perth during the period.
The metallurgical test results for samples from reject diamond drill core material were encouraging with several potential processing routes now available to produce a spodumene concentrate product of +6% Li2O at recoveries of 73% Dense Media Separation (DMS) to 94% Flotation.
The preliminary test work indicated a +6% spodumene concentrate could be produced at 3.35mm crush size, with a high overall recovery utilising standard whole-of-ore Flotation or several variations of a combined DMS and Flotation process.
AVZ defines Roche Dure pegmatite over 800m strike length
- MO18DD018 intersected 283.20m* @ 1.69% Li2O and 905ppm Sn from 75.00m down-hole on drill section 7200mN
- MO18DD020 intersected 155.75m* @ 1.41% Li2O and 816ppm Sn from 133m down-hole preceded by 30.00m* @ 1.57% Li2O and 866ppm Sn from 58m downhole on drill section 6800mN
- MO18DD017 intersected 123.00m* @ 1.67% Li2O and 898ppm Sn from 138.00m down-hole on drill section 6700mN
- MO18DD019 intersected 69.00m* @ 1.38% Li2O and 1205ppm Sn from 148.00m down-hole on drill section 6600mN
- Mr Leonard Math appointed Joint Company Secretary.
*Down-hole length. Additional drilling is required to confirm the true thickness of the pegmatites.
AVZ’s Managing Director, Nigel Ferguson, commented: “Hole MO18DD018 has produced another high-grade drill intercept. We are very pleased that drilling has now defined mineralised pegmatite over an 800m strike length at the Roche Dure prospect, including approximately 300m to the south of the historical Roche Dure pit in unmined ground.”
“The thinning of the pegmatite towards the south west was expected, however thicknesses remain significant in terms of overall tonnage potential that can be added to the Mineral Resource estimate, to be reported soon. Infill drilling continues towards the south west and towards the north-east along strike from the initial due diligence drill hole MO17DD002.”
AVZ Minerals Limited (ASX: AVZ) (the “Company”) is pleased to provide an update on mineral resource drilling of the Manono Lithium Project in the Democratic Republic of Congo, where results have defined mineralised pegmatite at Roche Dure over a strike length of more than 800m.
AVZ completed drill-holes MO18DD017 and MO18DD019 off-section between lines 6600mN and 6700mN due to site conditions at the time. MO18DD020 was drilled on section 6800mN as planned and MO18DD018 was drilled on section line 7200mN as planned (Figure 1). Details of drill-hole locations are given in Appendix 1.
|Figure 1: Location of drill-holes MO18DD017 - MO18DD020.|
MO18DD018, on line 7200mN, intersected 283.20m* @ 1.69% Li2O and 905ppm Sn from 75.00m to 358.20m (Figure 2), similar to the intersections on drill section 7100mN (as reported on 28 June 2018) 100m southwest of MO18DD018 and the intersection achieved by MO17DD002 (202.8m @ 1.57% Li2O and 1078ppm Sn, as reported on 28 July 2017) approximately 180m north-east of MO18DD018.
|Figure 2: MO18DD018 cross-section.|