Works of "Research Collection"
Place Collected: Nuevo Tepache
Place Collected: La Chuqui Mine
Place Collected: Las Delicias Mine
Place Collected: La Chuqui Mine
Place Collected: El Soccoro Mine
Place Collected: Calumet Mine
Place Collected: Armando Cota Claim
Place Collected: Mount Ida
Place Collected: La Reina Mine