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Highlights:
Green spodumene crystals up to 20 cm wide and 30 cm long were discovered in pegmatite, on
Parks Lake peninsula (Figure 1).The current width of the exposed area of the spodumene pegmatite is 12 m.
Abundant blue spodumene crystals were also discovered in the pegmatite (Figure 2).
The concentration of spodumene in the pegmatite ranges from 5% to 50% locally, with an average of 15-20% spodumene.
At the time of discovery, the spodumene pegmatite was exposed in two outcrops.
Grab sample assays of Riches Pegmatite:
6.48 % LiO blue-grey spodumene, sample 889574
5.89 % LiO green spodumene, sample 889563
5.09 % LiO pale green spodumene, sample 889573
3.83 % LiO green spodumene zone with 20-25% spodumene, up to 20 cm in size, sample 889564
1.61 % LiO pale green spodumene zone with locally 30% spodumene, sample 889562
Samples 889574, 889563 and 889573 are mineralogical samples of pure spodumene. Visual estimates of spodumene contents in the Riches pegmatite does not necessarily equate to Li2O % assays. Additional assays are pending. Grab samples are selective in nature and may not represent the average composition of the spodumene pegmatite.
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Figure1 30 cm long and 20 cm long green spodumene crystals discovery, Riches Pegmatite,
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Figure2 Abundant blue-grey spodumene crystals in Riches Pegmatite,
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Figure3 Map of the Riches Spodumene Pegmatite and the Rare-element pegmatite zone on
Table1 Assay highlights table for
Sample No. | Lithology | Location | Be (ppm) | Rb (ppm) | Nb (ppm) | Sn (ppm) | Cs (ppm) | Ta (ppm) | Li2O (%) |
889574 | RE-Pegmatite - Spodumene | 3 | 99 | 5 | 30 | 72.1 | 13.9 | 6.48 | |
889563 | RE-Pegmatite - Spodumene | 8 | 234 | 18 | 34 | 227 | 28.1 | 5.89 | |
889573 | RE-Pegmatite - Spodumene | 22 | 416 | 19 | 54 | 276 | 55.1 | 5.09 | |
889564 | RE-Pegmatite - Spodumene | 18 | 235 | 18 | 22 | 130 | 43.7 | 3.83 | |
889562 | RE-Pegmatite - Spodumene | 6 | 226 | 14 | 14 | 96.8 | 31.7 | 1.61 | |
889653 | RE-Pegmatite, muscovite | 48 | 5030 | 170 | 75 | 1880 | 122 | 0.62 | |
889557 | Li-Muscovite | 23 | 2170 | 355 | 220 | 149 | 48.3 | 0.48 | |
889558 | RE-Pegmatite, Beryl | 36000 | 79 | 5 | 2 | 1060 | 2.4 | 0.29 | |
889539 | RE-Pegmatite,Beryl | 37550 | 240 | 2 | 3 | 904 | 2.6 | 0.22 | |
889509 | RE-Pegmatite, Beryl | 4955 | 952 | 49 | 75 | 177 | 10.4 | 0.1 | |
889559 | Pegmatite, Beryl | 780 | 276 | 34 | 7 | 61.5 | 22.5 | 0.03 | |
889523 | RE-Pegmatite, Beryl | 1086 | 15 | 2 | 2 | 27.4 | 0.6 | 0.02 | |
889654 | RE-Pegmatite, Oxides | 0.5 | 37 | 87300 | 91 | 9.5 | 27200 | 0.005 | |
Once Tearlach’s geology team discovered beryl on
Coarse-grained muscovite books have been identified in seven other locations within the rare-element pegmatite zone (Figure 3andFigure 4). There is a potential that these other seven locations of muscovite books also relate to spodumene pegmatite; however, stripping is required to determine if each of these locations also contains spodumene.
Tearlach’s geology team will cut channel samples of Riches pegmatite and conduct a Trimble GPS survey with real-time satellite CenterPoint correction and±2 cm accuracy in the horizontal to prepare for a winter drill program on the pegmatite.
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Figure4 Coarse-grained muscovite books border zone of Riches spodumene pegmatite,
Sampling and Mapping Methodology
As of
Quality Control
The grab samples were delivered by Tearlach geologists to Actlabs,
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About Tearlach:
Tearlach, a member of the TSX Venture 50, is a Canadian exploration company engaged in acquiring, exploring, and developing lithium projects. Tearlach has two key projects: Lithium pegmatite on
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