Principal deposits are located at Mount Isa , the world's largest single mine producer of lead, and the adjacent Hilton Mine. Other major deposits north of Mount Isa include Lady Loretta and Dugald River, and the Century zinc deposit near the old Silver King Mine at Lawn Hill, 150km north west of Mount Isa. South east of Mount Isa, the important Cannington discovery contains very large reserves of silver, with associated lead and zinc. These include the Thalanga orebody and prospects at Balcooma and Liontown. West of Maryborough, zinc is contained in a limestone type deposit at Ban Ban.
Silver is recovered as a by product in the refining of gold bullion produced in Queensland.
It is also found associated with metallic copper, or gold. Metallic zinc has been reported in the basaltic rocks of Victoria, but this is very rare. Small quantities of metallic lead have been found in nature, but since lead oxidises easily, this is very uncommon. Silver is the best conductor of heat and electricity. Many silver salts are acted upon by light, and this gives them an important use in photography.