Nov 14 (Reuters) - Argonaut Gold Inc AR.TO
* Primero announces sale of Cerro Del Gallo project
* Primero Mining Corp - Argonaut will acquire all of issued and outstanding shares of San Anton Resource Corporation
* Primero Mining Corp - Primero will receive consideration of $15 million in cash
* Primero Mining Corp - Primero expects to use proceeds from transaction to reduce company's total outstanding debt position