Southern Cross Gold Achieves Significant Metallurgical Development at Sunday Creek Gold-Antimony Project

Core Insights - Southern Cross Gold Consolidated Ltd has announced a significant metallurgical development at its Sunday Creek Gold-Antimony Project, focusing on selective flotation processing that yields high-grade, low-arsenic antimony-gold concentrate [1][5][10] Metallurgical Development - Stage 2 test work has successfully demonstrated selective flotation processing, producing a high-grade, low-arsenic antimony-gold concentrate while achieving excellent recovery of native gold [2][3] - The selective flotation technology identified specialized collector chemistry that effectively separates antimony minerals from arsenic-bearing minerals, addressing a critical requirement while maintaining high gold recovery [3][5] - Overall gold recovery ranges from 92.3% to 95.6% across three product streams, indicating a robust processing capability [4][16] Product Streams - The project has established a three-product processing strategy: 1. Gravity gold concentrate, achieving direct recovery of native gold up to 51.4% of feed gold [23] 2. Antimony-gold concentrate, producing high-grade concentrates with antimony grades of 48.2% to 53.1% and gold grades reaching up to 93.2 g/t [8][16] 3. Sulphide concentrate, capturing remaining free gold and gold associated with pyrite-arsenopyrite [23] Economic Potential - The combination of excellent overall native gold recovery and the ability to produce premium antimony concentrates enhances the project's economic potential, particularly given the favorable market conditions for antimony due to recent export restrictions from China [5][33] - Antimony represents approximately 21% to 24% of the in-situ recoverable value of the Sunday Creek project, highlighting its significance alongside gold [32][37] Future Development - The company plans to scale up processing through locked-cycle testing, pilot plant evaluation, and process plant design targeting Q1 2027 [4][20] - Future testing will focus on optimizing recovery rates, understanding the impact of grind size, and developing geometallurgical models across deposit zones [20][38]