Galena on quartzCollection Highlights | Updated 7 days ago Galena and quartz, Northampton mineral field, Western Australia. Specimen is 6 cm long. Peter Downes, WA Museum Although Western Australia is renowned for its deposits of gold, the first commercial mineral export from Western Australia was lead. In the late 1800s, the Northampton lead field yielded many fine specimens of galena (lead sulfide, a common ore used for the production of lead) associated with other minerals such quartz (silicon dioxide). Mineral Collection