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Tennant Minerals Limited (ASX: TMS), is excited to announce a spectacular, true-width intersection of high-grade copper and gold from BBDD00181, the first diamond drillhole of the recently completed Stage 2 drilling program at the Bluebird discovery (see intersection on longitudinal projection, Figure 1 below).
- Diamond drillhole BBDD0018 has produced a spectacular, true-width, intersection of high- grade copper and gold at the Bluebird discovery, 40km east of Tennant Creek in the NT:
- 30.5m @ 6.2% Cu and 6.8 g/t Au from 153.6m (downhole),
including 17.8m @ 5.2% Cu and 11.5 g/t Au from 153.6m, and,
including 16.1m @ 10.5% Cu and 0.44 g/t Au from 164.9m.
- 30.5m @ 6.2% Cu and 6.8 g/t Au from 153.6m (downhole),
Image 1: Massive copper-sulphides in BBDD00181, part of very high-grade copper intersection: 16.1m @ 10.5% Cu
- This spectacular gold and copper-sulphide intersection occurs at a similar depth to previous, exceptional, copper-gold intersections at Bluebird, including:
- BBDD0012: 63m @ 2.1% Cu, 4.6 g/t Au from 153m incl. 40m @ 3.0% Cu, 7.3 g/t Au2
- BBDD0007: 50m @ 2.7% Cu, 0.52 g/t Au from 158m incl. 24m @ 5.0% Cu, 1.0 g/t Au3
- BBDD0013: 40m @ 2.6% Cu, 1.3 g/t Au from 131m incl. 24.5m @ 3.9% Cu, 0.45 g/t Au4
- BBDD-2: 20m @ 0.61% Cu, 8.17 g/t Au, from 157m incl. 4m @ 0.66% Cu, 37.9 g/t Au3
- BBDD0012: 63m @ 2.1% Cu, 4.6 g/t Au from 153m incl. 40m @ 3.0% Cu, 7.3 g/t Au2
- These intersections occur within a thick and shallow-plunging dilational zone which is open along strike to the east and especially to the west, where it becomes shallower.
- New drilling is planned to test shallow extensions of this exceptionally thick and high-grade copper-gold zone, as well as at depth where results are pending from a further five drillholes, including intersections of thick and intense copper mineralisation (descriptions - Appendix 1).
- Drilling will also test other priority targets within the 2.5km Bluebird-Perseverance Corridor.
Tennant Minerals Chairman Matthew Driscoll commented:
“This latest drill-hit from Bluebird is truly spectacular and includes a thick and high-grade gold zone of over 11 grams per tonne, as well as a massive copper-sulphide zone grading over 10 percent copper.
“Drilling is already planned to extend this remarkable new discovery, which lies under shallow cover to the east of the Tennant Creek Mineral Field and continues to grow – in all directions.”
“Theresultsareanotherkeystepinour strategy to identify multiple, multi-million tonne, high-grade copper- gold deposits within the Barkly Tenements, where we aim to establish a stand-alone copper-gold project.”
Figure 1: Bluebird discovery, longitudinal projection showing the latest spectacular intersection in BBDD0018
The spectacular BBDD0018 diamond drilling intersection of:
- 30.5m @ 6.2% Cu and 6.8 g/t Au from 153.6m (downhole),
includes a high-grade gold zone of 17.8m @ 11.5 g/t Au, 5.2% Cu from 153.6m which extends from the faulted hanging wall side of the brecciated ironstone. The gold zone overlaps with the high-grade copper zone of 16.1m @ 10.5% Cu from 164.9m, which includes massive copper-sulphides (chalcopyrite and chalcocite – see descriptions, Appendix 1) (see Image 1). The copper zone extends to the footwall side of this thick, true-width intersection (see Table 1 for all significant intersections and Table 2 for drilling details).
This new intersection extends the shallow easterly plunging dilational zone to the west, where it becomes shallower and remains open. This zone also includes the extraordinary results from BBDD0012 of 63.0m @ 2.1% Cu and 4.6 g/t Au2 from 153.0m and BBDD00091, which intersected 50m @ 2.7% Cu and 0.52 g/t Au3 from 158m, which occur at a similar depth below surface (see Figure 1).
Other key intersections within this zone include BBDD0013, which intersected 40m @ 2.6% Cu and 1.34g/t Au4 from 131m, and the previous exceptionally high-grade gold intersection in BBDD-2 of 20m @ 0.61% Cu and 8.17 g/t Au3, from 157m (Figure 1).
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EIS Grant for Minnie Springs Copper Porphyry Drilling
- Augustus Minerals has been granted a co-funded drilling grant of up to $110,000 for 2 x 700m deep diamond drill holes under the WA Government’s Exploration Incentive Scheme (EIS) for the Minnie Springs prospect.
- The deeper diamond drill program is designed to test and to provide a 550m deep, 1km wide geological/geochemical/structural cross-section through the large 3km long by 1km wide copper moly porphyry system, linking the Mo mineralised leucogranite to the extensive Cu in soil anomaly to the northeast.
- Previous RC drilling at Minnie Springs intersected mineralisation, geology and alteration halo consistent with the zoning of a large porphyry copper / moly system.
Andrew Ford, GM Exploration
“The Company is pleased to receive an EIS grant to complete deeper drilling at the Minnie Springs Copper Molybdenum Project. The resultant data will enable mapping of the lithology and alteration to a depth of 550m and potentially intersect, or provide vectors to, higher grade Mo-Cu mineralisation using a Mo-Cu porphyry geological model”.
Minnie Springs
Minnie Springs hosts porphyry related copper molybdenum mineralisation previously drilled and defined by Catalyst Metals. A molybdenum Exploration target has been defined for the historicdrillingareacomprisedofbetween12-84Mtasoutlinedbelow (Table 1 and Figure 1, 2.)1.
Table 1. Exploration target size estimate for Minnie Springs Molybdenum depositNote: Based on ~300 ppm cut-off at 100% recovery.
The potential quantity and grade of the exploration target is conceptual in nature, there has been insufficient exploration to estimate a Mineral Resources, and it is uncertain if further exploration will result in the estimation of a Mineral Resource.
The planned diamond drilling will complement the recently completed 3,200m RC drilling program that infilled around hole MSRC012 (18m @ 0.37% Cu and 9.7 g/t Ag from 94m downhole, and 16m @ 0.38% Cu and 19.4g/t Ag from 121m downhole2) and tested the northern half of the 2km long copper-in soil anomaly. Assays from this program are expected to become available over the next month.
The limited exploration in the region, highlighted by 95% of the Ti-Tree project having no previous exploration, demonstrates the prospectivity of this underexplored mineral province.
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Quarterly Activity Report 31 March 2024
Figure 1. Fiery Creek Copper Prospect/Yataga Granodiorite summarizing rock (brown diamonds) and termite mound sample results (black crosses)
Continuing with its primary exploration focus on the Georgetown project in the latter half of 2023, EMU received assay results during the quarter from its second, in field reconnaissance work. The geochemical sampling programme covered the Fiery Creek high grade copper vein swarm and the Snake Creek prospects with significant element results returned from the Fiery Creek Copper (elevated Cu-Au-Ag-Bi-In-Pb-Sb-Te) and Snake Creek (elevated Pb-Ag-Au-Sb).
Whilst the survey was cut short due to inclement weather, EMU was encouraged by the significant success reflected in the assays results. The results from mineralogical studies confirmed EMU’s interpretation of an indicative, scale Copper-Porphyry system at the Fiery Creek prospect and was a highlight of the survey with new information building on the scale and potential of the prospect1.
Assay results returned included:
- Fiery Creek rock assay results up to 23.5% Cu, 0.27ppm Au, 460ppm Ag, 1.9% Bi, 89ppm In, 2.7% Pb, 667ppm Sb, 1470ppm Zn2.
- evidence of strong potential for the presence of critical and strategic minerals (Cu, Bi, In), with precious and base metals.
- evidence of alteration mineralogy, mineralisation geochemistry and areal extent of the Fiery Creek quartz-Cu-Bi vein swarm strongly suggesting a previously unrecognised subjacent porphyry Cu-Mo system.
- Yataga Granitoid Complex termite mound and coincident rock chip sampling returned several anomalous polymetallic zones for follow up.
- Snake Creek Prospect assays returned 0.20ppm Au, 390ppm Ag, 22.4% Pb, 464ppm Sb1.
Significant results were returned from the Fiery Creek Copper prospect with elevated Cu-Au- Ag-Bi-In-Pb-Sb-Te and from the Snake Creek prospect with elevated Pb-Ag-Au-Sb.
The elevated pathfinder element results and a macro-petrology assessment3 of rock samples completed by Mr Nigel Maund, Consulting Economic Geologist, from the previously unexplored Fiery Creek Prospect, point to the discovery of a porphyry copper system.
The sampling program assessed a number of high-priority prospects within the Georgetown Project tenements utilising termite mound and outcrop rock chip geochemistry. A total of 46 rock chip and 489 termite mound samples were collected across eight prospects.
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This article includes content from EMU NL, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
