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About Us » Writers » John Rothermel
John Rothermel (President Silver Nickel Mining Co.)

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Articles by John Rothermel
Prospecting for Copper

This article deals with copper exploration, but it is relevant to exploration for other minerals. I will use the geology of the Copper Creek area in Pinal County, Arizona, as an example.

May 2004 (Vol. 73, No. 9)
VMS Deposits in Central Arizona

Volcanogenic Massive Sulfide (VMS) deposits in the Central Arizona Precambrian volcanic belt occur within a felsic package of volcanic rocks capped by an exhalite unit comprised of cherts, iron formations and siliceous members.

October 2004 (Vol. 74, No. 2)