 | | Report (issue) | | characterized, from bottom to top, by tectonized ultramafic rock, a transition zone of interlayered ultramafic and... south of the Denali fault, in the Yentna River area, central Alaska Range, have affinities with deep...chromite at lyikrok Mountain (map no. 1), Avan Hills (map no. 4), and Misheguk Mountain (map no. 5). Platinum-group... and barium are also present at Siniktanneyak Mountain (map no. 6). High concentrations of gold and PGE...unmeasured chromite occurrences are present at Asik Mountain (map no. 3) in the southern part of the province |  | | Book (edition) | | Co\·er photo: \\ 7 ulfenite, Rowley Mine, Maricopa County, 4 cm high specimen, Evan and Melissa Jones Collection...gemandmineralmuseum.arizona.edu) is located in the old Pima County Courthouse building at 115 North Church Avenue...on the market. The mines at Bisbee, in Cochise County, have produced large quantities of gem-quality...mineral stamp issued in 1992. At Morenci, in Greenlee County, gem-quality azurite was also commercially recovered...parallel to the grain. The Blue Ball Mine, in Gila County, has produced thousands of azurite nodules up to |  | | Report (issue) | | Pee i oh ce bdd hos iad Rad Lakesacdeeerd 94 Steep Rock Lake .ssecececeveescssesssessereressesesveseses...enews: Wieyei aia wave tie"weue'e shetout 266 Bagte Mountain secccccsetee ves eeoee ee eevee ecs ee 268 Engels...no OIL ORO OIG ZoZ 292 Boulder County Tellurides .... 294 Boulder County Tungsten ...... eeoeeesee 296...323 A. Rifle area, Colorado «0s... 323 B. Uravan District, Colorado 324 Cope tick Rock DIsEEIcL sCoLoradO)...Utah ...coccccecccccesece 334 N. San Rafael—Cedar Mountain, Utah .ccccccccccecccscscvce 339 PTA aioktevaaaieal |  | Johnson, Scott E., Paterson, Scott R., Fletcher, John M., Girty, Gary H., Kimbrough, David L., MartĂn-Barajas, Arturo - Eds. (2003) Tectonic evolution of northwestern Mexico and the Southwestern USA. GSA Special Paper 374. Geological Society of America doi:10.1130/0-8137-2374-4 | Report (issue) | | evolution of northwestern MĂ©xico and the southwestern USA Edited by Scott E. Johnson Department of Earth Sciences...Center University of Maine Orono, Maine 04469-5790 USA Scott R. Paterson Department of Earth Sciences University...of Southern California Los Angeles, CA 90831-0740 USA John M. Fletcher Departamento de Geologia CICESE...CICESE P.O. Box 434843 San Diego, California 92143 USA Gary H. Girty Department of Geological Sciences San...State University San Diego, California 92182-1020 USA David L. Kimbrough Department of Geological Sciences |  | | Report (volume) | | ___ ____ Geologic formations__________ Subject, area, or individual. Individual names. Listed by name...information indexed. Area listing of all formation tables and sections. Area. Area; some sketch maps included...___________ Systems__________________ Subject or area. Area; also includes articles discussing origin of...of minerals or ores. Mineral name listing. Area; includes more than one mineral; not indexed to individual...by name of field. Papers written for the layman. Rock names and areas; restricted to new or unusual rocks |  | | Book (edition) | | Depositional Textures 112 5 ALTERATION AND GANGUE Wall-rock Alteration Gangue 159 62 145 146 V vi Contents...controls, depositional textures, replacement, wall-rock alteration, gangue, paragenesis and zoning, and...therefore are not ore minerals. An ore may be a rock containing veinlets, disseminations, or small amounts... and many ores grade into protore — mineralized rock that is too lean to yield a profit. As Playfair... 2 Introduction calcite, or other gangue and rock with which it is associated. The study of ore deposits |  | | Report (issue) | | North American continent. In the McCall, Idaho, area (fig. 1), the suture zone can be located fairly...metamorphism and structure of rocks in the Riggins, Idaho, area. East of the suture zone, they documented east-vergent...Snee (1988) described (1) vertical transport of rock material at and adjacent to the suture, (2) formation... Moscow Pullman OR WA ID ID S ke na River Area of map He lls Ca Se n v e Mtn n D yon s. evi ls...wisdom of previous geologists working in the SRSZ area. Notable among these are Waldemar Lindgren, Clyde |  | | Book | | of the Namaqualand Metamorphic Complex in the Aus area (Jackson. 1976)contain magnetite quartzites which...a similar age and origin to the Aggenys, Black Mountain and Gamsberg magnetite quartzites and sedex lead-zinc...carbonates in the graniterich terrain of the Aus area. Deposits of refractory minerals may occur. The...The Gaub ValleyFomiation of the western Rehoboth area consists or biotitic schists that are extensively...One pluton of the 1050-millionyear-old Gamsberg Granite Suite contains very lowgrade porphyry copper mineralisationon |  | | Book | | of the Iron River-Crystal Falls District, Iron County, Michigan PERMISSIONS The following papers have...Straitigraphy, and Origin of Iron Formations, Michipicoten Area, Algoma District, Ontario, Canada Three Great Basins...BERLIN—Handbook of Geochemistry Abundance in Common Igneous Rock Types Abundance in Natural Waters UNESCO—Proceedings...consuming, to search out the key papers in any basic area of research that one can hardly blame a busy man...library. We are endeavoring to make his task a little easier. Each volume in the series contains an |
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