1851 in Australia 1851 in Australia 1851 in Australia was a watershed year. It saw the start of the Australian gold rushes with significant gold discoveries in both New South Wales (near Bathurst) in February and Victoria in July. As a result of the Gold Rushes, the European population of Victoria increased from 97,489 in 1851 to 538,628 in 1861 and the population of NSW increased from 197,265 in 1851 to 350,860 in 1861. Victoria became a self-governing colony. Sentiment in the eastern Australian colonies moved decisively against penal transportation leading to the end of transportation to Tasmania in 1853. Melbourne's major suburb/satellite
Gold in California Both during the Gold Rush and in the decades that followed, gold-seekers also engaged in "hard-rock" mining, that is, extracting the gold directly from the rock that contained it (typically quartz), usually by digging and blasting to follow and remove veins of the gold-bearing quartz. By 1851, quartz mining had become the major industry of Coloma. Once the gold-bearing rocks were brought to surface, the rocks were crushed and the gold separated, either using separation in water, using its density difference from quartz sand, or by washing the sand over copper plates coated with mercury (with which gold forms an