Gold Mountain (ASX: GMN) has defined extensive lithium and gold anomalies from stream sediment sampling across its Salinas South and Coroaci prospects in Brazil’s “Lithium Valley”.
The company identified lithium anomalies extending up to 12 kilometres at Salinas South alongside newly mapped gold anomalism ranging from 6km to 16km in length, while also confirming additional lithium anomalies at Coroaci.
The Salinas South prospect comprises 26 tenements covering 50,911 hectares, while the Coroaci prospect comprises six tenements covering 11,898 hectares.
The results expand the anomalous footprint across both prospects and support the development of future drill targets within the broader Lithium Valley project area.
Salinas Sediment Samples
Gold Mountain collected 272 stream sediment samples across Salinas South to complete full coverage of the prospect area and analysed them for 52 elements using ultra-low detection limits.
Interpretation of the data identified coherent lithium anomalies with key pathfinder elements including tantalum, tin and rubidium defined over zones up to 12km in length.
One lithium anomaly hosts high-order results coincident with a known artisanal working previously reported, while a second newly identified anomaly extends for approximately 8km.
Several of the newly defined or extended gold anomalies are supported by coincident sulphur and arsenic anomalism, with structural interpretation integrated with geochemical clustering confirming probable structural controls on these anomalous trends.
Coroaci Lithium Anomalism
At Coroaci, the company collected 27 stream sediment samples and completed reconnaissance geological mapping to provide broad-scale coverage of the prospect area.
The program identified lithium anomalies together with pathfinder elements including caesium, tin, and rubidium across large catchment areas.
Historical and artisanal mining for gem tourmaline, beryl, and muscovite has occurred within or adjacent to the Coroaci tenements, highlighting the prospectivity of the area for pegmatite-hosted mineralisation.
Regional work was undertaken over favourable magnetic and structural trends, with further work planned to identify specific geological controls.
Pathfinder Element Responses
The company plans detailed soil sampling over the strongest lithium anomalies at Salinas South, including areas with coincident pathfinder element responses and known artisanal workings, to define priority drill targets.
Additional on-ground geological mapping will target pegmatite outcrops and test gold anomalies concurrently within lithium soil sampling programs, with follow-up geophysical surveys to be assessed over gold anomalies where required.
At Coroaci, infill drainage sampling followed by soil sampling will refine priority drill targets and additional geological mapping will focus on identifying pegmatite outcrops.
Executive director David Evans said the programs further validate the project's strong potential.
“Our lithium portfolio remains an important asset to the company despite our current major focus on the rare earths at Irajuba.”
