What gold rush are you talking about ? Californian Otago Alaskan Brazilian Australian South African and guess there were many more in the world

Naseby, Maniototo, Central Otago.

Otago is in New Zealand http://www.otago.co.nz/

Lawrence.

Yes, much gold was found in the broad Central Otago region. Most of this was alluvial, with the parent source being the rich ores of Shotover and Arrow during earlier eras when the landscapes were vastly different. There was some ore gold won however, notably from the Bendigo field, and in modern times, from Macraes. There was a minor ore field near Oturehua.