The tectonic environment of formation of volcanogenic massive sulphide deposits and
porphyry tin and copper deposits can be identified from the geochemical characteristics of�…

A compilation of economically viable gold concentrations containing≥ 10 Moz in the North
and South American Cordillera reveals the existence of 22 discrete belts in addition to five�…

The weathered zones of ore deposits, which no longer exist, are reconstructed by inference
to provide estimates of relative abundances of usable nuggets of native copper, silver, and�…

It has been recognized for the past century that copper deposits, in common with those of
many other metals, are heterogeneously concentrated in Earth's upper crust, resulting in�…

Rhenium and osmium isotopes in sulfide minerals from the Bagdad porphyry Cu–Mo
deposit have been used to determine timing of mineralization and the source of osmium�…

In the orogenic belts of western North and South America, metal provinces are aligned
approximately parallel to the continental margins, and, despite irregularities, a general�…

Abstract The Pine Creek mine, located 27 km west of Bishop, California, contains scheelite-
bearing skarns found at and near the contacts between a septum of Paleozoic�…

The ores of the Ertsberg district consist of both porphyry stockwork and contact controlled
mineralization related to the Grasberg and Ertsberg intrusion centers. High-grade copper�…

Compilation of published and new data on the distribution, timing, and composition of
igneous rocks, ore deposits, and metamorphic rocks in the east-central Great Basin reveals�…

The Grasberg is a porphyry copper deposit that is crosscut by a second stage mineralization
which is greatly enriched in gold. Sulfides from the porphyry-type event yield a 2.9�0.3 Ma�…