Alteration and fluid inclusion study of the Groundhog vein ...
· Polymetallic vein and skarn orebodies in the Groundhog mine, Central district, New Mexico, produced more than 590 million in silver, zinc, copper, lead, and gold between 1870 and 1977 (1990 prices). Mineralization occurs along the northeasttrending Groundhog fault zone, and underground workings extend to within 2 km of the Santa Rita porphyry copper .