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Emerging gold producer and exploration company Great Divide Mining Ltd (the Company or GDM) (ASX:GDM), is pleased to announce the completion of a second LiDAR interpretation over EPM 26135 Kilkivan, Devil’s Mountain Gold Project, SE Queensland.
Highlights:
- GDM purchased the Gympie 2023 LiDAR dataset from the QLD Government, totalling 80 km2, covering EPM 26135, which lies directly SE of the historical gold mining town of Kilkivan.
- A comprehensive LiDAR interpretation was undertaken by specialists GeoCloud Analytics. The interpretation indicated a total of 486 potential historical mine workings, including 40 adits, 16 shafts and 430 other prospecting pits. Many of the old workings were not previously known to GDM.
- The new LiDAR results, combined with previous exploration data has significantly enhanced GDM's dataset, used to identify and prioritise gold bearing targets for further follow-up exploration work.
Chief Executive Officer, Justin Haines, commented:
“This second LiDAR dataset for Devils Mountain has allowed GDM to get a more accurate picture of all of the historical gold mining at Kilkivan prospects area. Shafts and adits are good indicators of the presence of significant gold and base metal mineralisation, because of the effort invested in producing those old excavations. The LiDAR results confirm GDM’s strategy of targeting areas of abundant historical workings and applying modern exploration technologies to those targets”.
Devils Mountain Project
GDM’s Devils Mountain Project comprises 5 x EPMs (17685, 26062, 26135, 26709, 28438) located ~30 km northwest of Gympie (see Figure 1). The Project lies in the Palaeozoic Gympie and Wandilla Provinces of the New England Orogen in southeast Queensland.
Devils Mountain is highly prospective for gold and is host to an abundance of mineral occurrences. In addition to gold, the area contains occurrences of copper, silver, lead, zinc, tungsten and mercury, as well as a number of manganese deposits (see Figure 2). It’s geological setting has many similarities to the nearby Gympie goldfield.
Figure 1: Devils Mountain Gold Project Location Map
Figure 2: Devils Mountain Project Geology and known historical mining prospects
LiDAR Survey Data
LiDAR specialists GeoCloud Analytics purchased part of the Gympie 2023 LiDAR dataset from the QLD Government on behalf of GDM, over an 80 km2 area in the western part of the Devils Mountain Project, covering EPM 26135. The resolution of the raw data is 1 m. GeoCloud Analytics reprocessed the point cloud data to yield a 50cm resolution bare earth Digital Terrain Model (DTM).
The LiDAR survey was flown in 2023 with a minimum average density of 10.5 points per square metre with an average flying height of 1933m above ground level. Details of the survey are provided in the JORC Table 1, see Appendix 1.
A number of new LiDAR images were generated by GeoCloud Analytics in order to extract more information about the project. The enhanced 3D datasets and 2D images produced have facilitated detailed interpretations, allowing the identification of historical mine workings, prospecting pits, geological structures, access tracks and other surface features such as drill pads.
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