Columbia subject headings:
Dikes (Geology)
Geology--New Mexico--Grant County.
Sills (Geology)
Harvard subject headings:
Copper mines and mining--New Mexico--Grant County.
Dikes (Geology)
Geology, Economic--New Mexico--Grant County.
Mines and mineral resources--New Mexico--Grant County.
Mining geology--New Mexico--Grant County.
Santa Rita (N.M.)--Geological surveys.
Sills (Geology)
Princeton subject headings: