ECONOMIC GEOLOGY , 2000, V 95, N 3, May.

Underground fumaroles: Excess heat effects in vein 
453

Richard W. Henley and Graham Hughes


A fluid inclusion study of Au-bearing quartz vein systems in the Central

Deborah deposit of the Bendigo goldfield, Central Victoria, 
467

Yiefei Jia, X. Li and R. Kerrich


The nature and genesis of gold-silver-tellurium mineralization in the

southern Apuseni Mountains of western Romania
495

David H.M. Alderton and Anthony E. Fallick


Mineralogical and chemical studies of volcanic-related argillaceous

industrial minerals of the Central American Cordillera (western El Salvador)
517

H.G. Dill, H.-R. Bosse,and J. Kassbohm


The origin of platinum group minerals from Sierra Leone inferred from

osmium isotope systematics

539

J.F.W. Bowles, I.C. Lyon, J.M. Saxton, and D.J. Vaughan


Origin of platinum-bearing placers in the Aluchin horst, Russian Far

East        
549

Stanislav S. Gornostayev, Alexander D. Dodatko, Kauko V.O. Laajoki,

and Alexander G. Mochalov


Hydrothermal mobilization of HFSE in alkaline igneous systems: Evidence

from the Tamazeght Complex
559

Stefano Salvi, François Fontan, Pierre Monchoux, A.E. Williams-Jones,

and Bernard Moine


Diffusion and reaction controlled Cu-Pb-Zn ore mineral precipitation

in a reducing system: a model applied to the pattern of ore mineral precipitation
 in the Kupferschiefer and other black shales

577

David J. Large and J.S. Small


Vein and karstic barite deposits in the Western Jebilet of Morocco: 

Fluid inclusion and isotope (S, O, Sr) evidence for regional fluid mixing

related to the Central Atlantic rifting  
587

Katia Valenza, Robert Moritz, Abdellah Mouttaqi, Denis Fontignie,

and Zachary Sharp


Sedimentary Origin  of the Mn-Fe Ore of Um Bogma, Southwest Sinai:

Geochemical and Paleomagnetic Evidence

607

N. L. ElAgami, E. H. Ibrahim, and H. H. Odah


Oxygen and carbon isotope study of natural and synthetic azurite
621

Erik B. Melchiorre, Robert E. Criss and Timothy P. Rose


Significant deposits of gold, silver, copper, lead, and zinc in the

United States        
629

Keith R. Long, John E. DeYoung, Jr., and Steve Ludington


Scientific Communications

The pallacos of Cerro Rico de Potosi, Bolivia: A new deposit type

645

Paul J. Bartos


4500 year old mining pollution in southwestern Spain:  Long-term

implications for modern mining pollutions
655

Marc Leblanc, J. A. Morales, J. Borrego, and F. Elbaz-Poulichet