Usage:
quartz monzonite porphyry of Santa Rita stock (informal) (NM-local)
Santa Rita granodiorite porphyry stock (informal) (NM-local)
Recognized locally in Santa Rita mining district.
Informal. The rank or lithologic term should not be capitalized.
Geologic age:
Late Cretaceous or younger
Type section, locality, area and/or origin of name:
A rounded body about 1 mi across best exposed in copper pits of Santa Rita Copper Mine, in southeastern corner of Santa Rita quadrangle, about 12 mi east of Silver City, Grant Co., southwestern NM (Kerr and others, 1950).
AAPG geologic province:
Basin-and-Range province
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).