PC Gold Ltd (ASX: PC2), a gold exploration and development company focused on its Spring Hill Gold Project in the Northern Territory, has announced highly encouraging metallurgical testwork results for its Pre-Feasibility Study (PFS). The latest findings indicate gold extraction rates of up to 99.4% from Spring Hill mineralisation, achieved at a coarse grind size. This positive outcome stems from comprehensive testwork on six composite samples representing the project’s oxide, transitional, and fresh domains.
The metallurgical program highlighted strong gravity gold recoveries, ranging between 33.1% and 48.9%. All tested domains demonstrated overall gold extraction between 90.2% and 99.4% at coarse grind sizes (80% passing 106 and up to 150 micrometres). Weathered zones proved free-milling, returning 99.4% gold extraction at a P80 of 150 micrometres. Executive Chair Ashley Pattison noted that oxide domains liberate at substantially coarser grind sizes, potentially reducing grinding power requirements and increasing plant throughput rates. Comminution testwork showed weathered and transitional zones are soft, with a very low abrasion index.
The study also reported very low lime and cyanide consumption, attributed to the mineralisation’s nature and high quality of site water. True Specific Gravity determinations (2.87 to 3.07 tonnes per cubic metre) were notably higher than bulk densities used in the July 2026 interim Mineral Resource Estimate (MRE). A systematic program to evaluate densities is underway, with results to be incorporated into an updated MRE targeted for mid-December 2026. These robust metallurgical characteristics, including excellent rheological properties and a low deleterious element profile, support PC Gold’s progress. The PFS remains on track for delivery in mid-November 2026, with favourable processing parameters expected to contribute to the project’s economic viability.
