Further Lithium mineralisation identified at Mt Peake
Highlights
● 1.15% Li2O (and 226 ppm Ta) returned from ongoing rock chip sampling program at the Mt Peake Lithium Project
● Petrological study confirms Montebrasite, Ferrotantalite and Wodginite
● Further mapping, rock chip sampling and an extension to the previously announced soil geochemistry program are planned to locate drill targets
Australasian Metals Limited (ASX: A8G, Australasian or the Company) is pleased to advise that the Company has identified further lithium mineralisation at the Mt Peake Lithium Project, in the Northern Arunta pegmatite province, Northern Territory.
A8G Managing Director Dr Qingtao Zeng commented:
"Our sampling program and mapping is continuing to generate encouraging results and we are greatly increasing our understanding of the different phases of intrusion in this area. Our geologists have identified lithium mineralisation on every sampling survey to date and the latest >1.0% Li2O rock chip sample gives us increasing confidence on the lithium enrichment within our tenements. The high lithium content indicates that the pegmatites in our area have fractionated enough to concentrate up lithium and related elements and there could be several parallel lithium-bearing pegmatite dykes in shallow depth waiting for us to drill."
Outcropping bedrock in the northwest corner of EL32830 is rare due to the dominant alluvial cover, which provides limited access to probe the geology directly. With our ongoing field mapping and sampling surveys, the Company has again confirmed lithium mineralisation in the surface through another sample (MP10127) with 1.15% Li2O and 226 ppm (location is presented in Figure 1). This is consistent with the previously reported JC-001 sample which contained 1.61% Li2O and 223 ppm Ta. MP10127 was taken ~800m to the southeast of JC001. The exact relationship between these two mineralised samples is still unknown due to the limited outcrop and will be a focus of investigation in the near future. All samples to date assay results are listed in the Table 1 of this announcement.
Diamantina Laboratories were engaged for a petrological study on sample MP10127. One of the minerals identified was montebrasite (LiAl(PO4) (OH,F)) a lithium phosphate that is amenable to processing to produce a saleable product.
Figure 1: Location of Sample MP10127 at the northwest corner of EL32830. The interpreted pegmatite bodies in shallow depth by DGPR was coloured in orange. The Inserted map shows the soil sampling program area and rock chip locations.
Figure 2: Montebrasite in thin section of Sample MP10127
Dr Qingtao Zeng | Mr Dan Smith |
Managing Director | Joint-Company Secretary |
M +61 8 6507 3082 | T +61 8 9486 4036 |
The montebrasite forms a 2cm sized crystal in the centre of the 4x 2.5cm slide area of Sample MP10127. It is flanked by variable concentrations of finer muscovite, apatite, quartz and some fine montebrasite. The montebrasite was identified by optics/ SEM, and confirmed by its XRD pattern, which differs from its polymorph, amblygonite.
The identified micas are seen to form bunches of coarse flakes and have a very high Rb2O content (>3%), yet very low fluorine (0.15%). The mica is colourless macroscopically and in polarized light. Attempts using RI values that separate lepidolite and muscovite were inconclusive. XRD patterns are very similar. SEM scan found a number of grains of ferrotantalite and wodginite.
Next Steps
• Soil geochemistry will be infilled around the areas of anomalism and will also be extended to the south-east to cover the area sample MP10127 was taken.
• Rock chip sampling will be ongoing across the project where there is outcrop exposure.
• Soil and rock chip geochemistry will be combined with the previously conducted Deep Ground Penetrating Radar survey to develop a more complete understanding of the geology and mineralisation.
• Work has begun on the submission of a Mine Management Plan in order to obtain authorisation under the Mining Management Act (NT) to carry out activities that could lead to significant disturbances. This will enable the company to conduct drilling activities.
This announcement is approved for release by the Board of Directors.
ENDS
For Further Information
Competent Person Statement
The information in this report that relates to Exploration Results is based on, and fairly represents, information and supporting documentation prepared by Graeme Fraser, Non-Executive Director of Australasian Metals Limited (A8G). Mr Fraser is a member of the Australasian Institute of Mining and Metallurgy and he has sufficient experience which is relevant to the style of mineralisation and type of deposits under consideration and to the activity which has been undertaken to qualify as a Competent Person as defined in the 2012 Edition of the "Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves". Mr Fraser consents to the inclusion in this release of the matters based on the information in the form and context in which they appear. Mr Fraser is a shareholder of A8G.
Sample ID | East | North | Li2O (ppm) | Cs (ppm) | Fe (ppm) | Nb (ppm) | P (ppm) | Rb (ppm) | Sn (ppm) | Ta (ppm) |
JC001 | 307813 | 7592989 | 16,080 | 66.7 | 3200 | 25 | 85600 | 1975.4 | 91 | 223 |
JC002 | 306439 | 7597227 | 50 | 5.8 | 33700 | 50 | 900 | 544.1 | -10 | 3.3 |
MP10101 | 307736 | 7592965 | -20 | 21.6 | 5400 | 18 | 400 | 299.2 | -10 | 7.1 |
MP10102 | 307735 | 7592965 | -20 | 10.1 | 3800 | 5 | 4400 | 176.7 | -10 | 0.6 |
MP10103 | 307744 | 7592982 | -20 | 6.5 | 3800 | 6 | 600 | 262.9 | -10 | 2 |
MP10104 | 307956 | 7593086 | -20 | 0.8 | 2800 | 3 | -200 | 36.9 | 269 | -0.1 |
MP10105 | 307958 | 7593085 | -20 | 1 | 3400 | 2 | 400 | 29.2 | -10 | 0.1 |
MP10106 | 307951 | 7593054 | 20 | 11.8 | 2500 | 7 | -200 | 218.9 | 15 | 3.7 |
MP10107 | 307874 | 7592931 | 20 | 8.7 | 3800 | 6 | 300 | 211.8 | -10 | 2.4 |
MP10108 | 307841 | 7592910 | -20 | 7.6 | 4100 | 10 | 200 | 204 | -10 | 1.2 |
MP10109 | 307955 | 7592859 | -20 | 6.1 | 3400 | 4 | 300 | 159.1 | -10 | 0.1 |
MP10110 | 308018 | 7592908 | -20 | 7.7 | 3200 | 5 | 500 | 222.7 | 16 | 1 |
MP10111 | 308056 | 7592909 | -20 | 7 | 3200 | 10 | -200 | 192.9 | 11 | 4.1 |
MP10112 | 307919 | 7592729 | -20 | 13.4 | 6600 | 16 | 400 | 250.5 | 12 | 9.3 |
MP10113 | 308119 | 7592747 | -20 | 20.4 | 9900 | 35 | 500 | 226.3 | 21 | 17.6 |
MP10114 | 308337 | 7592270 | -20 | 11.3 | 5800 | 3 | 900 | 242 | -10 | 0.6 |
MP10115 | 308270 | 7592253 | -20 | 12.3 | 5000 | 20 | -200 | 235.4 | 14 | 4 |
MP10116 | 308276 | 7592378 | -20 | 6.4 | 4100 | 8 | 1200 | 224.1 | 13 | 3.4 |
MP10117 | 308372 | 7592308 | -20 | 16.5 | 6100 | 30 | 800 | 262.4 | 22 | 17.4 |
MP10118 | 308569 | 7592046 | -20 | 0.4 | 5400 | -2 | -200 | 16.1 | -10 | -0.1 |
MP10119 | 306079 | 7595894 | -20 | 12.6 | 5700 | 16 | 400 | 334 | 14 | 3.3 |
MP10121 | 306140 | 7596471 | -20 | 0.6 | 3200 | 11 | 400 | 21.5 | -10 | 0.2 |
MP10122 | 305515 | 7595048 | 90 | 1.8 | 24200 | 12 | 400 | 165.4 | -10 | 0.2 |
MP10123 | 308531 | 7592567 | -20 | 23.4 | 4800 | 20 | 600 | 534.1 | 16 | 9.1 |
MP10124 | 308576 | 7592564 | -20 | 23.2 | 6300 | 30 | 800 | 307.2 | 76 | 8.7 |
MP10125 | 308721 | 7592493 | -20 | 11.6 | 4300 | 12 | 600 | 148.4 | 45 | 5 |
MP10126 | 308563 | 7592636 | 30 | 68.8 | 9900 | 86 | 400 | 704.7 | 499 | 31.2 |
MP10127 | 308603 | 7592711 | 11,520 | 30.3 | 5500 | 32 | 31000 | 747.3 | 113 | 225.7 |
MPL007-A | 308812 | 7592372 | 240 | 27.4 | 44300 | 15 | 800 | 205.7 | 36 | 4.5 |
MPL007-B | 308812 | 7592372 | 40 | 25.3 | 6700 | 21 | 800 | 428.5 | 17 | 4.4 |
MPL007-C | 308812 | 7592373 | -20 | 7.5 | 2900 | 10 | 600 | 175.8 | 18 | 2.1 |
MPL007-D | 308812 | 7592373 | 20 | 16.8 | 3100 | 15 | 400 | 357.2 | 19 | 3.6 |
MPL007-E | 308812 | 7592374 | 40 | 27.4 | 5800 | 34 | 900 | 351.8 | 266 | 30.2 |
MPL007-F | 308812 | 7592374 | 30 | 14.4 | 4600 | 23 | 200 | 211.4 | 44 | 8.4 |
MPL007-G | 308812 | 7592375 | -20 | 15.9 | 3500 | 21 | 800 | 314.8 | 23 | 8 |
MPL008 | 308816 | 7593219 | -20 | 27.4 | 3000 | 74 | 1100 | 463.9 | 23 | 125.4 |
MPL009 | 308801 | 7593348 | 110 | 28.5 | 4500 | 87 | 1300 | 754.6 | 71 | 21.2 |
MPL014 | 309037 | 7592428 | -20 | 19.8 | 5100 | 19 | -200 | 269.6 | 24 | 2.8 |
MPL015 | 308812 | 7592418 | 30 | 19.4 | 4100 | 20 | -200 | 241.5 | 52 | 12.7 |
MPL018.1N | 307901 | 7589618 | 120 | 12.8 | 4800 | 3 | 300 | 197.6 | -10 | 0.3 |
MPL018.2N | 307901 | 7589618 | 30 | 5 | 13000 | 10 | 400 | 187.9 | 33 | 1.4 |
MPL018.51S | 307853 | 7589575 | 40 | 10.1 | 33800 | 19 | 500 | 374.1 | -10 | 0.5 |
MPL018.52S | 307831 | 7589564 | 60 | 8.3 | 9500 | 20 | -200 | 147.9 | 45 | 1.1 |
MPL018.53S | 307855 | 7589503 | 60 | 3.9 | 10000 | 15 | -200 | 139.1 | 42 | 1.2 |
MPL018.54S | 307867 | 7589368 | 40 | 3.7 | 7500 | 13 | -200 | 97.9 | 18 | 3.3 |
MPL018.55S | 307896 | 7589448 | 50 | 7.5 | 11700 | 11 | -200 | 223.1 | 32 | 2.1 |
MPL018.56S | 307907 | 7589504 | 60 | 6 | 9200 | 16 | 400 | 264.5 | 62 | 1.2 |
MPL024 | 316042 | 7596469 | 210 | 25.5 | 19000 | 17 | 1300 | 372.6 | -10 | 2.9 |
MPL050 | 306689 | 7592442 | 50 | 1.7 | 82300 | 7 | 600 | 113.2 | -10 | 0.5 |
MPL051 | 306539 | 7592468 | 30 | 18.7 | 12600 | 13 | 500 | 237.5 | 22 | 3.3 |
MPL053 | 331523 | 7573401 | 80 | 13 | 43200 | 21 | 1400 | 393.1 | -10 | 1.9 |
MPL054.1 | 308047 | 7592961 | -20 | 0.6 | 3100 | 5 | 500 | 15.4 | -10 | 6.3 |
MPL054.2 | 308047 | 7592961 | 70 | 8.4 | 5100 | 9 | 800 | 203.4 | 11 | 4.4 |
MPL054.3 | 308047 | 7592961 | 20 | 2.9 | 5000 | 6 | -200 | 140.4 | -10 | 1 |
MPL056 | 305789 | 7596444 | 40 | 16.8 | 8800 | 21 | 400 | 418 | 18 | 5.1 |
MPL057 | 305899 | 7596451 | 80 | 7.1 | 5300 | 10 | -200 | 206.4 | -10 | 3 |
MPL058 | 305964 | 7595913 | -20 | 7.8 | 3100 | 2 | 500 | 272.2 | 11 | 0.8 |
Table 1: Results of all surface samples taken from the Mt Peake lithium project to date.
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Australasian Metals Ltd. published this content on 07 April 2022 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 07 April 2022 22:28:06 UTC.