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Showing: 1 to 10 of 2880 matches for "zinc porphyry"  Page   1   2   3   4   5   6   7   8   9  next TITLE Sulphur Isotopes in Minerals of the Pacific Rim  SUMMARY ... MAFIC BARITES EVAPORlTES RECENT SEDIMENTS EXHALATIVE LEAD-ZINC PORPHYRY COPPER DEPOSITS EPIGENETIC DEPOSITS -40 -20 +20 +40 Figure ... AUTHOR Herbert HK ; Richards JR PUBLISHED 1987 TITLE Drill-Site Favorability For Concealed Porphyry Copper Prospect, Rome Canyon, Nevada Based On Characteristic Analysis Of Geochemical Anomalies  SUMMARY ... data for the porphyry copper deposit near Ely. Favorability is defined as the coincident number of positive anomalies for the elements zinc, silver, arsenic ... AUTHOR McCammon, R. B. PUBLISHED 1979 TITLE Geochemical Prospecting For Porphyry Systems In St. Francois Mountains, Missouri  SUMMARY ... Osborn was the first to use the term "zinc porphyry" for this locatio and states further "the ore as developed is very uni- form in grade and from all ... AUTHOR Gustavson, John B. PUBLISHED 1977 TITLE Geologic Characteristics of Gold-Bearing Jasperoids and Areas of Possible Additional Occurrences, in the Delta Two-degree Quadrangle, West Central Utah  SUMMARY ... bodies; copper and gold in veins closest to the porphyry stocks; lead and silver from replacement deposits an intermediate distance from the stocks; and zinc. ... AUTHOR Nutt C J ; Campbell D L PUBLISHED 1988 TITLE 3. Models for Prospect Evaluation of Skarn Deposits  SUMMARY ... zone or tremolite for the zinc-lead zone. A general desciption of skam-deposit mineralogy can be used to construct prospecting models of porphyry copper skams. ... AUTHOR Hollister, Victor F. PUBLISHED 1991 TITLE Gold Mineralization In Porphyry Copper Deposits  SUMMARY ... Typical gold-poor porphyry systems such as the San Manuel and Copper Basin deposits in ... skarn or copper vein deposics, outward to a zone of lead zinc vein or ... AUTHOR Lowell, J. D. PUBLISHED 1988 TITLE 11 .Discovery of Porphyry Copper Mineralization at Cerro Petaquilla ? Introduction  SUMMARY ... MINERALIZATION For the most part, the porphyry-type copper and molybdenum mineralization ... No significant lead and.zinc concentrations have been found in the ... AUTHOR Huhta, J. Vaino PUBLISHED 1991 TITLE Recovery Of Gold And Silver From Massive Sulfide Deposits  SUMMARY ... Selected examples are: Bisbee - A porphyry copper of Jurassic age as contrasted ... direct shipping sulfide ore. Also produced were lead-zinc ... AUTHOR Chase, Clement K. PUBLISHED 1986 TITLE San Manuel  SUMMARY ... Substantial quantities of gold, silver, molybdenum, vana- dium, lead, and zinc were produced in ... 248 THE PORPHYRY COPPERS R. Burns Giffin: He was a well-to-do ... PUBLISHED 1957 TITLE The Epithermal Au and Porphyry Cu (Au) Relationship in the Western Pacific and Central Europe  SUMMARY ... gold and zinc-lead vein deposits within magmatic arcs are situated on basement highs, and post-date both the main volcanic episode and porphyry copper (gold ... AUTHOR J C Carlile PUBLISHED 1995 Showing: 1 to 10 of 2880 matches for "zinc porphyry"  Page   1   2   3   4   5   6   7   8   9  next Search Again