the gloria sulfur mine lies on casiri – specifically, on the foot of paucarani and southeast from the lava flows. the sulfur is contained in heavily altered rocks covering an area of about and is genetically related to the activity of casiri. it has been excavated through trenches and wells; some installations could still be exploitable. another mine known as san luis may also be associated with paucarani; it is located on the northwestern flank. precious metals might occur in the hydrothermally altered areas at casiri.