ECONOMIC GEOLOGY
and the
Bulletin of the Society of Economic Geologists
Volume 103 May 2008 Number 3


Express Letter

Precise Age of the Platiniferous Merensky Reef, Bushveld Complex, South Africa, by the U-Pb Zircon Chemical Abrasion ID-TIMS Technique
J. S. Scoates and R. M. Friedman    pp. 465-471
Abstract


Regular Papers

Hydrothermal Evolution of the Porphyry Copper Deposit at La Caridad, Sonora, Mexico, and the Relationship with a Neighboring High-Sulfidation Epithermal Deposit
V. A. Valencia, C. Eastoe, J. Ruiz, L. Ochoa-Landin, G. Gehrels, C. González-Leon, F. Barra, and E. Espinoza    pp. 473-491
Abstract

Mineral Zoning and Geochemistry of Epithermal Polymetallic Zn-Pb-Ag-Cu-Bi Mineralization at Cerro de Pasco, Peru
R. Baumgartner, L. Fontboté, and T. Vennemann    pp. 493-537
Abstract

Synthetic Fluid Inclusions. XVII. PVTX Properties of High Salinity H2O-NaCl Solutions (>30 wt % NaCl): Application to Fluid Inclusions that Homogenize by Halite Disappearance from Porphyry Copper and Other Hydrothermal Ore Deposits
S. P. Becker, A. Fall, and R. J. Bodnar    pp. 539-554
Abstract

Postorogenic Origin of the Stratiform Cu Mineralization at Lufukwe, Lufilian Foreland, Democratic Republic of Congo
H. A. El Desouky, P. Muchez, S. Dewaele, A. Boutwood, and R. Tyler    pp. 555-582
Abstract

Uranium Metallogenesis in South China and Its Relationship to Crustal Extension during the Cretaceous to Tertiary
R-Z. Hu, X-W. Bi, M-F. Zhou, J-T. Peng, W-C. Su, S. Liu, and H-W. Qi    pp. 583-598
Abstract

Bimodal Distribution of Gold in Pyrite and Arsenopyrite: Examples from the Archean Boorara and Bardoc Shear Systems, Yilgarn Craton, Western Australia
A. A. Morey, A. G. Tomkins, F. P. Bierlein, R. F. Weinberg, and G. J. Davidson    pp. 599-614
Abstract

Revisiting the Cumulative Grade-Tonnage Relationship for Major Copper Ore Types
M. D. Gerst    pp. 615-628
Abstract


Scientific Communications

Tertiary Tilting and Dismemberment of the Laramide Arc and Related Hydrothermal Systems, Sierrita Mountains, Arizona
W. J. A. Stavast, R. F. Butler, E. Seedorff, M. D. Barton, and C. A. Ferguson     pp. 629-636
Abstract

Image Analysis and Composition of Platinum-Group Minerals in the J-M Reef, Stillwater Complex (U.S.A.)
B. Godel and S-J. Barnes    pp. 637-651
Abstract


Book Reviews

Geology of Mexico: Celebrating the Centenary of the Geological Society of Mexico (S. A. Aivarez and A. F. Nieto-Samaniego, eds.)
F. Barra    pp. 653-654

Mineralogy and Optical Mineralogy (M. Darby Dyar and M. E. Gunter)
R. D. Hagni    pp. 654-655

Understanding and Responding to Hazardous Substances at Mine Sites in the Western United States (J. V. Degraff, ed.)
T. Trainor    pp. 655

Reviews


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