Callion East Project

The Callion East Project spans approximately 270 km² in Western Australia’s resource-rich Eastern Goldfields, strategically positioned within the emerging Ida Fault Lithium Corridor. This corridor is a major focus of lithium exploration and development efforts, extending over 300 km north-northwest from the renowned Mount Marion lithium mine.

Geological Setting

The project is underlain by a complex suite of fertile, fractionated granites and gneissic terrains, including:

Siberia Monzogranite and Bali Monzogranite Group intrusions

Davyhurst Granite and Papertalk Granite in the northern extents

These post-regional folding granites (post-RFG) are part of the same broader magmatic events known to generate:

Lithium-caesium-tantalum (LCT) pegmatites, particularly along granite-greenstone contacts

Auriferous hydrothermal systems, responsible for significant Archaean gold deposits

The presence of these highly fractionated granitoids provides both heat and mineralizing fluids, critical to the formation of pegmatites and gold systems alike.

Strategic Position in the Ida Fault Lithium Corridor

The Ida Fault Lithium Corridor has become a hotspot for exploration following:

Recent pegmatite discoveries near Mt Ida (by Red Dirt Metals, now under Mineral Resources)
Regional LCT pegmatite trends extending northwest of Mount Marion

Recognizing the corridor’s potential, Greta Minerals Australia Ltd initiated work at its Gecko North Project, and subsequently expanded exploration through acquisition of the Callion East tenure—chosen for its proximity to fertile intrusions and structural preparation.

Gold Prospectivity: A Valuable Secondary Target

Though critical minerals remain the primary focus, gold potential at Callion East is equally compelling. The area lies over major post-RFG granitic bodies, historically underexplored for Archaean gold systems.

Notably, the Woodcutters goldfield (approx. 1.4 Moz Au), located 50 km north of Kalgoorlie, presents a strong analogue. The Federal Zone, a key deposit there, is hosted in hornblende-biotite granodiorite—6 km from the nearest greenstone contact. This challenges traditional exploration assumptions and highlights the gold potential in granitic terrains similar to those at Callion East.

Exploration Strategy

To efficiently evaluate both lithium and gold targets, Greta Minerals employs the UltraFine+™ soil geochemistry method, developed in collaboration with CSIRO and MRIWA. This advanced technique enhances anomaly detection by:

Reducing background variability

Increasing anomaly-to-background ratios

Identifying subtle geochemical signatures in challenging terrains

This dual-target approach is designed to maximize discovery potential while preserving exploration focus in one of Australia’s most geologically prospective corridors.