ECONOMIC GEOLOGY and the Bulletin of the Society of Economic Geologists, 2003, V 98, N 8, December.

Tectono-Magmatic Precursors for Porphyry Cu-(Mo-Au) Deposit Formation
Jeremy P. Richards

Geology of the Bajo de la Alumbrera Porphyry Copper-Gold Deposit, Argentina
John M. Proffett

Porphyry-Style Alteration and Mineralization of the Middle
Eocene to Early Oligocene Andahuaylas-Yauri Belt, Cuzco Region, Peru
Jose Perello, Victor Carlotto, Alberto Zarate, Pedro Ramos,
Hector Posso, Carlos Neyra, Alberto Caballero, 
Nicolas Fuster, and Ricardo Muhr

Endeavour Cu-Au Porphyry Deposits, Northparkes, New South Wales: 
Intrusive History and Fluid Evolution
Vanessa Lickford, David R. Cooke, Stuart G. Smith, and
Thomas D. Ullrich

The Ridgeway Gold-Copper Deposit: A High-Grade Alkalic Porphyry 
Deposit in the Lachlan Fold Belt, New South Wales, Australia
Alan J. Wilson, David R. Cooke, and Benjamin L. Harper

The Chloride Source for Atacamite Mineralization at the 
Radomiro Tomic Phorphyry Copper Deposit, Northern Chile
Terry Arcuri and George Brimhall

Scientific Communications

40Ar-39Ar Ages of Hypogene and Supergene Mineralization in the Cerro Verde-Santa Rosa Porphyry Cu-Mo Cluster, Arequipa, Peru Chan X. Quang, Alan H. Clark, James K.W. Lee, and Jorge Guillen B. In-Situ Distribution of Gold in Ores Using High Resolution X-Ray Computed Tomography TJ. Richard Kyle and Richard A. Ketcham