Otago Gold Rush Otago Gold Rush The Otago Gold Rush (often called the Central Otago Gold Rush) was a gold rush that occurred during the 1860s in Central Otago, New Zealand. This was the country's biggest gold strike, and led to a rapid influx of foreign miners to the area - many of them veterans of other hunts for the precious metal in California and Victoria, Australia. The rush started at Gabriel's Gully but spread throughout much of Central Otago, leading to the rapid expansion and commercialisation of the new colonial settlement of Dunedin, which quickly grew to be New Zealand's largest city.
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