They were originally issued in July, 2016, as part of a placing and were set to expire on January 28 this year.
They are to be extended to January 28, 2019.
The exercise price will remain at C$1. Each whole warrant, when exercised, will be exchangeable for one share.
Argentina focused resource group Golden Arrow revealed on December 28 last year that its Puna Operations joint venture had received environmental approval, paving the way for extra Chinchillas ore integration with the Pirquitas mill for processing in 2018.
Development activities will begin with the first ore feed to the Pirquitas mill expected in the second half of 2018.
Puna is a joint venture of the Pirquitas property and the Chinchillas property, owned 25% by Golden Arrow.
Chinchillas is a silver-lead-zinc deposit located about 42 kilometers by road from the Pirquitas property