The New Cornelia Mine, Ago, Pima County, Arizona

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ACKNOWLEDGMENTS

I truly appreciate Jeff Scovil’s ongoing willingness to provide his excellent photographs that mean so much to readers. The collecting efforts of the many Ajo employees cannot be overlooked, but it was the efforts of Wayne Thompson, Mike New, Gary Fleck, and Stan Esbenshade who have enhanced our collections and preserved specimens that would have never seen the light of day. John Callahan has my appreciation for providing the map. Thanks go to Peter Megaw for his extensive review of this article and his constructive and positive additions that always make my articles so much better and also to the mineralogists, collectors, and authors for sharing their research with the collecting community. Thanks are extended to my wife, Paula, who has supported our collecting and my writing efforts for these past forty-seven years, and without whom none of this would be worth doing.

Notes

* Ore is defined as material mined and processed to produce an end product (metal) at a profit.

Additional information

Notes on contributors

Les Presmyk

Les Presmyk, a mineral collector for sixty years, is a recipient of the Carnegie Mineralogical Award and the A. L. Flagg Foundation Lifetime Service Award and has been inducted into the Mineralogical Society of Arizona’s Hall of Fame.