San Domingo is a lithium pegmatite project located in the Maricopa and Yavapai counties, Arizona. It was historically mined for lithium in the 1940’s and 50’s. Access to the project locations is via a dirt road 7 miles from Arizona Highway 74 that connects Wickenburg and Phoenix.
The project consists of 247 unpatented lode mining claims on federal land administered by the BLM and 2 mineral exploration permits on land administered by the Arizona State Land Department, which are 100% held by the company’s wholly owned US subsidiary, Zenolith (USA) LLC, covering a total area of c.23 km2.
Initial mapping in 2016 identified 10 lithium bearing pegmatite dykes, with dimensions of up to 60m in width and 600m in length. The lithium minerals are concentrated in the inner parts of the pegmatite bodies, and may well be present in many of the apparently lithium-free bodies whose outer parts are the only ones exposed.
- Mapping has identified that the North Morning Star and Midnight Owl pegmatites contain lithium bearing minerals at surface level.
- Rock chip sampling results returned up to 5m @ 1.97% Li2O and 3m @ 1.44% Li2O
- High grade lithium from dikes over two new sampling zones:
- Select grab sample returned a high grade of 8.0% Li2O
- Selective rock-chip sampling returned a very high grade of 5.8% Li2O
- Systematic composite rock chip sampling returned grades of 2.9m @ 0.86 Li2O, 2.8m @ 0.69% Li2O, 3m @ 0.71% Li2O and 3m @ 0.56% Li2O
- Further pegmatite dikes are known to occur partly within small claims that are excised from Zenolith’s claim
- A 3D mapping project was started in early 2022 to assess the extent of the pegmatites in the San Domingo pegmatite district.
- 30 holes are now permitted (July 2022) on the Central and Northern Sections of San Domingo.
- Drilling commenced in early Q3 and initial results from hole 1 demonstrate the presence of multiple pegmatite intersections. XRD analysis has shown that spodumene and lepidolite are present in these intersections.
A 30-hole drill programme is permitted and started at the beginning of Q3 2022, initial results from hole 1 demonstrate the presence of multiple pegmatite intersections. XRD analysis has shown that spodumene and lepidolite are present in these intersections.
Additional surface mapping and sampling, drill hole targeting using 3-D modeling and follow-up drilling and metallurgical sampling will be undertaken where necessary.