Zenith Minerals (ASX:ZNC) has advised that drilling and trenching has commenced at the Burro Creek lithium project in Arizona, as part of the American Lithium joint venture with Bradda Head Limited. The key aim of the program is to obtain sufficient technical information on the lithium clays to allow for an initial mineral resource estimate to be calculated.
- Drilling and trenching has commenced to test large scale lithium (Li) clay target at the Burro Creek project in Arizona, USA with the aim of defining an initial mineral resource;
- Project area doubled in size with staking of new claims. Mapping and sampling of new claim area has also commenced;
- Geological mapping and seismic geophysical surveys confirm extensive zones of near surface, shallow dipping lithium bearing clay with true thickness up to 50 metres;
- Surface sampling by Zenith returned high-grade lithium results up to 33.6m metres at 0.1% Li and 15m @ 0.14% Li. These results are comparable to competitor lithium clay projects in USA and Mexico that are subject to feasibility studies and trial processing plants respectively;
- Initial preliminary metallurgical testwork returned positive results on Burro Creek clay samples, with lithium recoveries to 90% from simple acid leach, and to 89% via calcine-water leach process;
- New JV management team appointed to drive American Lithium JV projects forward.
Zenith Minerals Limited (“Zenith” or “the Company”) is pleased to advise that drilling and trenching has commenced at the Burro Creek lithium project in Arizona USA, part of the American Lithium joint venture with Bradda Head Limited (Figure 1). The key aim of the program is to obtain sufficient technical information on the lithium clays to allow for an initial mineral resource estimate to be calculated.
The Burro Creek lithium clay project is located in central western Arizona, USA within an active mining district, Freeport McMoRan’s operating Bagdad porphyry copper mine is located 10km from the Burro Creek project. The Burro Creek project is subject to an exclusive option to purchase as detailed in Zenith’s ASX Release 10th November 2016.
Surface sampling by the Company of the lithium clay exposures (ASX releases 10th November 2016 & 13th January 2017) returned results up to 33.6m @ 0.1% Li whilst grab samples of relict drill spoil from shallow holes completed during a small, historical program to test the clay for industrial purposes returned results including: 0.17% Li and 0.13%Li (Figure 2). The lithium bearing clay zone is a near surface, flat lying horizon, with a true thickness greater than 30 metres, indicating excellent potential for large tonnages of lithium bearing clay within the Burro Creek project.