ASX ANNOUNCEMENT
28 April 2022
Mineralisation defined over + 500 metres of strike at Calyerup Creek Gold Project
KEY HIGHLIGHTS
• Final assay results from the initial RC drilling at Calyerup Creek have demonstrated significant mineralisation including:
o 6m @ 1.0 g/t gold from 2m in 22CCRC022
o 5m @ 0.8 g/t gold from 7m in 22CCRC019
o 7m @ 0.7 g/t gold from 17m in 22CCRC019
o 12m @ 0.7 g/t gold from surface in 22CCRC023
• Mineralisation extends for over 500m east-to-west and remains open in all directions and at depth
• Environmental surveys completed over the area confirm that the area is not affected by dieback, paving the way for additional drilling
• A programme of works (PoW) for an additional 110 holes approved by DMIRS
• Heritage Survey scheduled to be completed in late May / early June
Mamba Exploration Limited (ACN 644 571 826) ('Mamba', 'M24' or the 'Company') is pleased to announce that the follow-up drilling at the Calyerup Creek Project in the Great Southern of Western Australia has intersected shallow high-grade gold mineralisation (see Figure 1). All results have been received from the initial RC drill programme at Calyerup Creek.
The drilling has identified significant mineralisation on each drill line across the southern gold trend identified from soil sampling. The final results have extended the mineralisation from 350 metres as reported on 2nd March, to over 500m along strike and to a maximum vertical depth of around 35m.
The mineralisation remains open along strike and at depth.
Seven holes drilled to the west of the initial drilling on the southern gold trend intersected significant (+0.5 g/t gold) mineralisation, with results including 6m @ 1.0 g/t gold from 2m in 22CCRC022; 12m @ 0.7 g/t gold from surface in 22CCRC023, 7m @ 0.7 g/t gold from 17mand 1m @ 1.1 g/t gold from 10m in 22CCRC019 and 5m @ 0.8 g/t gold from 7m in 22CCRC021 (see Figures 2-6 and Table 1 for the full list of significant intersections and Table 2 for drill hole information).
Managing Director, Mike Dunbar said,
"It is pleasing to report that shallow and significant widths of gold mineralisation have been intersected on each of the drill lines completed across the southern gold trend. To intersect significant mineralisation in the initial drilling over a strike length of more than 500m and to a maximum vertical depth of 35m is an excellent start to exploration in the region. The mineralisation remains open in all directions. Now that mineralisation has been confirmed over a substantial strike length, the next round of RC drilling has been planned to extend the mineralisation at depth and further along strike.
Preparation for the drilling is well advanced with a PoW approved by DMIRS and environmental surveys confirming there are no impediments to drilling. A heritage survey has been commissioned and should be completed in late May or early June, allowing drilling as soon as the winter rains abate.
While access to our southern projects is limited during winter, our exploration efforts will shift to the Copper Flats Project in the Kimberley and the Ashburton Gold Project."
In addition to RC drilling completed on the southern gold trend, first pass very shallow drilling on the northern trend has also been completed. Anomalous zones (+ 0.1 g/t gold) of mineralisation were intersected in initial composite samples (See Table 1). Resampling of the anomalous zones is being undertaken, however, given the current assay turnaround of around 8-12 weeks, the resampling results are not expected for some time. This delay will not impact the follow-up drilling as access to the project is now limited due to the onset of the winter rains in the Great Southern of Western Australia slightly earlier than normal.
Importantly, the PoW that was submitted to DMIRS for additional drilling to be undertaken has been approved, allowing an additional 110 RC or diamond holes to be drilled within a four-year period. Additionally, environmental surveys have been undertaken over the project. These surveys have concluded that the area does not host species of flora that are susceptible to Phytophthora Dieback, which reduces the need for ongoing surveys.
The Company has also been advised by the Department of Biodiversity, Conservation and Attractions (DBCA), that they are planning to undertake a series of prescribed fuel reduction burns over the entire project in the coming month. While the prescribed burns are undertaken, access tothe project will be restricted, so it is unlikely that follow-up drilling will be undertaken until late Q3 or early Q4 this year.
Table 1: Significant RC Drill Intersections
Hole ID | Easting | Northing | RL | Dip | Azimuth | Depth | Prospect |
22CCRC015 | 691710 | 6241485 | 220 | -60 | 170 | 8 | Hole Failed - redrilled by hole 18 |
22CCRC016 | 691714 | 6241465 | 220 | -60 | 170 | 26 | Southern Workings - West |
22CCRC017 | 691716 | 6241444 | 220 | -60 | 170 | 39 | Southern Workings - West |
22CCRC018 | 691710 | 6241479 | 220 | -60 | 170 | 26 | Southern Workings - West |
22CCRC019 | 691665 | 6241539 | 220 | -60 | 180 | 28 | Southern Workings - West |
22CCRC020 | 691665 | 6241528 | 220 | -60 | 180 | 24 | Southern Workings - West |
22CCRC021 | 691664 | 6241519 | 220 | -60 | 180 | 28 | Southern Workings - West |
22CCRC022 | 691617 | 6241558 | 220 | -60 | 185 | 28 | Southern Workings - West |
22CCRC023 | 691623 | 6241539 | 220 | -60 | 182 | 27 | Southern Workings - West |
22CCRC024 | 691615 | 6241526 | 220 | -60 | 186 | 22 | Southern Workings - West |
22CCRC025 | 691661 | 6241845 | 220 | -60 | 180 | 21 | Northern Trend |
22CCRC026 | 691659 | 6241858 | 220 | -60 | 180 | 20 | Northern Trend |
22CCRC027 | 691659 | 6241867 | 220 | -60 | 180 | 20 | Northern Trend |
Hole ID | From | To | Interval | Grade g/t Gold | Grade x M | Notes |
22CCRC016 | 7 | 9 | 2 | 0.7 | 1.5 | Southern Trend |
22CCRC018 | 19 | 22 | 3 | 0.8 | 2.5 | Southern Trend |
22CCRC019 | 10 | 11 | 1 | 1.1 | 1.1 | Southern Trend |
22CCRC019 | 17 | 24 | 7 | 0.7 | 4.6 | Southern Trend |
22CCRC021 | 7 | 12 | 5 | 0.8 | 3.8 | Southern Trend |
22CCRC022 | 2 | 8 | 6 | 1.0 | 5.8 | Southern Trend |
22CCRC023 | 0 | 12 | 12 | 0.7 | 7.9 | Southern Trend |
22CCRC029 | 0 | 2 | 2 | 0.5 | 1.0 | Southern Trend |
22CCRC025 | 4 | 8 | 4 | 0.18 | 0.7 | Northern Trend |
22CCRC025 | 19 | 20 | 1 | 0.14 | 0.1 | Northern Trend |
22CCRC032 | 16 | 18 | 2 | 0.13 | 0.3 | Northern Trend |
22CCRC033 | 0 | 4 | 4 | 0.33 | 1.3 | Northern Trend |
22CCRC046 | 0 | 4 | 4 | 0.14 | 0.6 | Northern Trend |
Table 2: RC Collar details for the completed RC drilling at Calyerup Creek
Hole ID | Easting | Northing | RL | Dip | Azimuth | Depth | Prospect |
22CCRC028 | 691659 | 6241880 | 220 | -60 | 180 | 18 | Northern Trend |
22CCRC029 | 691664 | 6241508 | 220 | -60 | 180 | 24 | Southern Workings - West |
22CCRC030 | 691663 | 6241502 | 220 | -60 | 180 | 22 | Southern Workings - West |
22CCRC031 | 691490 | 6241756 | 220 | -60 | 190 | 20 | Northern Trend |
22CCRC032 | 691493 | 6241773 | 220 | -60 | 190 | 18 | Northern Trend |
22CCRC033 | 691498 | 6241784 | 220 | -60 | 190 | 16 | Northern Trend |
22CCRC034 | 691500 | 6241794 | 220 | -60 | 190 | 22 | Northern Trend |
22CCRC035 | 691502 | 6241801 | 220 | -60 | 190 | 16 | Northern Trend |
22CCRC036 | 691504 | 6241815 | 220 | -60 | 190 | 16 | Northern Trend |
22CCRC037 | 691504 | 6241823 | 220 | -60 | 190 | 16 | Northern Trend |
22CCRC038 | 691439 | 6241802 | 220 | -60 | 200 | 8 | Northern Trend |
22CCRC039 | 691443 | 6241813 | 220 | -60 | 200 | 8 | Northern Trend |
22CCRC040 | 691447 | 6241823 | 220 | -60 | 200 | 8 | Northern Trend |
22CCRC041 | 691450 | 6241833 | 220 | -60 | 200 | 20 | Northern Trend |
22CCRC042 | 691396 | 6241872 | 220 | -60 | 210 | 8 | Northern Trend |
22CCRC043 | 691401 | 6241878 | 220 | -60 | 200 | 20 | Northern Trend |
22CCRC044 | 691404 | 6241890 | 220 | -60 | 200 | 20 | Northern Trend |
22CCRC045 | 691454 | 6241842 | 220 | -60 | 200 | 20 | Northern Trend |
22CCRC046 | 691263 | 6241980 | 220 | -60 | 180 | 20 | Northern Trend |
22CCRC047 | 691262 | 6241990 | 220 | -60 | 180 | 20 | Northern Trend |
22CCRC048 | 691265 | 6242003 | 220 | -60 | 180 | 20 | Northern Trend |
Note: Co-ordinates are MGA Zone 50
Figure 2
Figure 1: Location of Mamba Exploration's Calyerup Creek Gold Project.
Figure 2: Calyerup Creek RC Drilling Locations (2022 new holes - white, 2022 previously reported holes - orange, 2021 holes - blue)
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Mamba Exploration Ltd. published this content on 27 April 2022 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 28 April 2022 02:33:03 UTC.