The project is expected to produce 75,000 ounces of gold per annum over 10 years.
Chinese-owned Norton is already a 180,000ozpa producer from its Paddington operation.
Western Australian mines minister Bill Johnston congratulated Norton for the project, which created 300 jobs during construction and will employ 200 workers during operations.
"It's always pleasing to see companies like Norton driving growth in WA's regional communities," he said.
"With more than $16 billion of sales in 2021 and as WA's second most valuable commodity, gold will continue to play a significant role in our economic future."
