BCI has a number of early stage exploration projects in the Pilbara and Murchison regions of Western Australia, known as the Marble Bar, Black Hills, Maitland and Peak Hill projects. BCI is actively exploring these projects, which are prospective for gold (both shear-hosted and conglomerate-hosted paleoplacer), lithium, zinc and copper.
The Marble Bar Project is located approximately 150km south-east of Port Hedland and approximately 20km north-east of the Marble Bar townsite. The tenements are prospective for both shear-hosted gold and lithium.
The Marble Bar Project covers Archean greenstone on the margin of the Mt Edgar Granite. The sheared greenstone on the margin of the granite is host to numerous historical gold mines, deposits and prospects including Warrawoona (Calidus Resources), Talga Talga (Novo Resources), Comet (Haoma Mining), Bamboo Creek (Haoma Mining) and Razorback (privately-held) (refer to figure above).
BCI’s gold exploration focus is on the northern part of the project area between the Talga Talga and Razorback prospects, where two gold trends with a total strike length of 15km have been identified, and more than 350 gold nuggets and rocks with visible gold have been discovered on BCI tenements by a prospector during 2016 and 2017.
BCI is currently completing mapping, rock-chip sampling and soil sampling in the norther part of the project area and plans to commence drilling shortly.
The southern part of the Marble Bar Project is located immediately north of the historic Moolyella tin/tantalum mining area. A compilation of previous exploration indicates that the Moolyella area is also prospective for lithium with several pegmatites identified with lepidolite and spodumene. The pegmatites trend north to south and may extend onto BCI’s tenements.
Previous exploration by BCI covering a small area in the southern end of the tenements identified a lithium soil anomaly and returned rock-chip grades of up to 1.5% Li2O. BCI is completing a more wide-spread mapping, rock-chip sampling and soil sampling programme, covering the prospective areas on the southern part of the tenements.
HillsThe Black Hills project is prospective for conglomerate-hosted paleoplacer gold as well as volcanic-hosted massive sulphide base metals (zinc and copper):
- Gold: a review of geological information in conjunction with details of recent conglomerate-hosted gold discoveries by other companies has indicated BCI’s tenements contain the formations that are prospective for such mineralisation, including conglomerates at the contact of the Fortescue Group and underlying basement. Site reconnaissance, mapping and sampling is underway to further assess potential.
- Base metals: the Black Hills tenements are along strike and to the west of the historical Whim Creek mine. An electromagnetic survey undertaken by a previous owner identified a number of interpreted sulphide conductors and drilling intersected anomalous zinc grades. Further mapping, sampling and geophysics is underway to generate targets for follow-up drilling programmes.
The Maitland project contains a magnetite iron ore Mineral Resource of 1,106Mt at 30.4% Fe. A review of geological information has indicated the tenements also contain formations that are prospective for conglomerate gold mineralisation, including the Mt Roe Basalt and Hardey Formation. Site reconnaissance, mapping and sampling is underway to further assess potential.
The Peak Hill tenements are located in the Bryah Basin, which contains a number of current and historic mines including DeGrussa, Monty, Horseshoe Lights, Peak Hill and Fortnum. The tenements cover the prospective Narracoota Formation which has the potential to host volcanic massive sulphide base metals (copper) and shear-hosted gold mineralisation. BCI is planning to undertake a target generation exercise based on geophysical surveys, mapping and sampling.