Antimony (Sb) occurs principally in stibnite (Sb2S3) in mesothermal vein deposits hosted in
low-grade metamorphic belts of eastern Australia and southern New Zealand. Stibnite is
commonly associated with gold. Many deposits have been mined historically, with one large
deposit, at Hillgrove, New South Wales, being mined recently. Natural outcrops in the
relatively rugged terrains are oxidised under humid to semiarid conditions and stibnite
transforms to oxides including valentinite, senarmontite, stibiconite, and rarely cervantite …