London-listed Hochschild Mining on Monday announced that it had halted operations at its San Jose mine, in Argentina, to comply with a regional lockdown in Santa Cruz.
The province has witnessed a significant increase in Covid-19 infections, the mining company reported.
Hochschild said it expected to restart limited operations on December 4.
The stoppage would affect the company's revised full-year guidance of between 280 000 and 290 000 gold-equivalent ounces, or 24-million to 25-million silver-equivalent ounces.