Andrada Mining Limited has confirmed mineralisation with notable high grades of tin, tantalum, and lithium in 13 pegmatites within its Uis Tin Mine license area.
According to the company, mineralisation has so far been identified in 13 of approximately 180 known mineralised pegmatites within the license area, with exploration efforts still ongoing.
The company noted that the current drilling programme—designed to validate historical data and assess the by-product potential of previously mined pegmatites—includes a total of 44 diamond drill holes and 177 reverse circulation (RC) drill holes. Results have been released for 136 holes (61%), while analysis of the remaining 85 is still pending.
Andrada Mining CEO, Anthony Viljoen, highlighted the significance of the findings, emphasising their potential to restore the Uis Tin Mine to its former global prominence.
“These strong drill results reaffirm the scale and quality of mineralisation across Uis’s extensive swarm of pegmatites,” Viljoen said. “High-grade intersections such as 1.13% tin, 1.76% lithium oxide, and 281ppm tantalum validate our strategy to grow the resource towards 200 million tonnes and support future reserve definition.”
Viljoen further stated that the polymetallic nature of the deposit—now shown to be rich in lithium and tantalum in addition to tin—offers significant economic advantages amid the rising global demand for critical metals.
“The polymetallic nature of the deposit significantly enhances Uis’s economics and aligns with the growing demand for critical metals across global markets. Our focus is clear: unlock the full value of Uis through disciplined growth, targeted investment, and a clear path to production scale-up,” he said.
He also expressed confidence in the mine’s strategic importance to the company’s long-term plans.
“With a 5km strike length and broad mineralised zones, we believe Uis has the potential to become a cornerstone asset in Andrada’s long-term growth strategy,” he stated.
According to the company, the ongoing programme has also begun to assess the broader potential of lithium and tantalum within pegmatites near the main deposit. Andrada Mining indicated that some deeper drill holes have extended beyond historical data points, confirming that mineralised zones continue at depth and tend to thicken, similar to the known V1V2 pegmatite.
The company reported that the deepest intersection in the current campaign reached 238 metres, compared to the 450 metres previously recorded for V1V2. Further exploration will investigate the potential for additional down-dip extensions.
