ECONOMIC GEOLOGY and the Bulletin of the Society of Economic Geologists, 2005, V 100, N 4, June-July.

100th Anniversary Special Paper

Metal Concentrations in Crustal Fluids and 
Their Relationship to Ore Formation
Bruce W. D. Yardley    
pp. 613-632

Geochronology of the Sequence Hosting the 
Broken Hill Pb-Zn-Ag Orebody, Australia
R. W. Page, B. P. J. Stevens, 
and G. M. Gibson    
pp. 633-661

Correlation of Olary and Broken Hill Domanins, 
Curnamona Province, Australia: Possible Relationship
to Mount Isa and Other North Australian 
Pb-Zn-Ag-Bearing Successions
R. W. Page, C. H. H. Conor, B. P. J. Stevens, 
G. M. Gibson, W. V. Preiss, and P. N. Southgate     
pp. 663-676

Gold Concentrations in Springs at Waiotapu, New Zealand: 
Implications for Precious Metal Deposition in Geothermal Systems
J. G. Pope, K. L. Brown, and D. M. McConchie   
pp. 677-687


Undulatory Silver-Rich Polymetallic Veins of the 
Castrovirreyna District, Central Peru: Fault 
Growth and Mineralization in a Perturbed Local Stress Field
James M. Wise    
pp. 689-705

Primary Platinum Mineralization in the Nizhny Tagil 
and Kachkanar Ultramafic Complexes, Urals, Russia: 
A Genetic Model for PGE Concentration in Chromite-Rich Zones
Thierry Auge, Antonin Genna, Olivier Legendre, 
Kirill S. Ivanov, and Yuri A. Volchenko    
pp. 707-732

Na-Fe-Ca Alteration and LREE (Th-Nb) Mineralization 
in Marble and Granitoids of Sierra de Sumampa, 
Santiago del Estero, Argentina
Marta Franchini, Raul Lira, Lawrence Meinert, 
Francisco Javier Rios, Fernanda Poklepovic, 
Agnes Impiccini, and Hugo A. Millone    
pp. 733-764

Scientific Communications


Refinements for Footwall Red-Bed Diagenesis in 
the Sediment-Hosted Stratiform Copper Deposits Model
Alex C. Brown    
pp. 765-771

Sulfide Melt Inclusions as Evidence for the 
Existence of a Sulfide Partial Melt at 
Broken Hill, Australia
Heather A. Sparks and John A. Mavrogenes    
pp. 773-779

Partial Melting of the Assemblage 
Sphalerite + Galena + Pyrrhotite + Chalcopyrite + Sulfur: 
Implications for High-Grade Metamorphosed 
Massive Sulfide Deposits
Gary Stevens, Sebastian Prinz, and Abraham Rozendaal   
pp. 781-786