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petrogenesis

Agate-Qtz
Examining agate growth pattern
Minerals & Mining
Outreach
 - 28 November 2020
Examining an iron oxide, agate, quartz crystal concretion.
Bighorn Fire smoking the Catalina mtns.
Geology & Mineral Resources of the Santa Catalina Mountains, SE Arizona
Minerals & Mining
News
 - 26 June 2020
A 145-page monograph on the geology and mineral resources of the Santa Catalina Mtns. by Dr. Eric Force (1997).
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