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| a few such specimens have been found after 1960 (see the Amity-Edenville entry for Edenite and Spine!)...is not common in the metasedimentary rocks of the area which host these species, but "reasonably good"...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...to 2 cm which are pseudomorphs after bastnasite--see photo in Guastoni, Pezzotta and Zorzi (2008). ILMENITE... r ILMENITE QUEBEC Girardville, Lac Saint-Jean area. Just northwest of the town of Girardville, itself |
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| Introduction _______________________________ 49 Chloride district-______________________________ 51 I vocation ______________...Continued. Cerbat Range Continued. Mineral Park district Continued. Tyler mine Lady Bug niine__ Rural and...Continued. Cerbat Range Continued. Stockton Hill district Continued. General outline Continued. Page. Topography...Stockton Hill " area_____________ 118 Gold Basin district ____________________________ 118 General feat...Boulder Creek group____________________ 138 Maynard district ________________________._____ 139 General description__________ |
 | Foley, Nora K., Caddey, Stanton W., Byington, Craig B., Vardiman, David M. (1993) Mineralogy, mineral chemistry, and paragenesis of gold, silver, and base-metal ores of the North Amethyst vein system, San Juan Mountains, Mineral County, Colorado. Professional Paper 1537. US Geological Survey doi:10.3133/pp1537 | Report (issue) |
| Paragenesis of Gold, Silver, and Base-Metal Ores of the North Amethyst Vein System, Sari Juan Mountains, Mineral...listed in various U.S. Geological Survey catalogs (see back inside cover) but not listed in the most recent...Paragenesis of Gold, Silver, and Base-Metal Ores of the North Amethyst Vein System, San Juan Mountains, Mineral...and its bearing on the economic potential of the area UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON:...paragenesis of gold, silver, and base-metal ores of the North Amethyst vein system, San Juan Mountains, Mineral |
 | Greber, Nicolas D., Hofmann, Beda A., Voegelin, Andrea R., Villa, Igor M., Nägler, Thomas F. (2011) Mo isotope composition in Mo-rich high- and low-T hydrothermal systems from the Swiss Alps. Geochimica et Cosmochimica Acta, 75 (21) 6600-6609 doi:10.1016/j.gca.2011.08.034 | Journal (article/letter/editorial) |
| greber@geo.unibe.ch (N.D. Greber). 0016-7037/$ - see front matter Ó 2011 Elsevier Ltd. All rights reserved...hydrothermal breccia from the Grimsel region (Swiss Alps, see Fig. 1 and Hofmann et al., 2004). Eleven samples...many molybdenite-bearing blocks fell down the north face of the Alpjahorn. All investigated samples derive...with the Mo deposit of the Alpeinerscharte in Austria, eastern Alps (Melcher et al., 1996; Langthaler...inclusion and trace element geochemical studies in the area of investigation are hampered by the regional Alpine |
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| displacement. Faulting involved northwest-southeast, north-south, and east-west extension, implying complex...dominant mineralized lodes, and the other with north-south– and east-west–striking veins. Although northwest-striking...directions, with the two main lodes in the open pit area, the Martha and the Welcome, capturing most of the...and dip-slip deformation. The 3-D strain in this area was not only due to local interference of differently...also to the superposition of regional tectonic north-northwest and northeast trends associated with migration |
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| 723 GEOLOGY AND ORE DEPOSITS OF THE MANHATTAN DISTRICT NEVADA BY HENRY G. FERGUSON WASHINGTON GOVERNMENT...Geologic map and structure sections of the Manhattan district, Nev __.. _______________:____<.___.___ In pocket...sections of the productive-portion of the Manhattan district, Nev_________________ 22 III. A, Round Rock, a...Toquima formation north of Mustang Hill _________ 54 IV. Hills of volcanic rocks north of Belmont road_________...filling___________________ 6. Geologic rnap of the area between the White Caps and Manhattan Consolidated |
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| complexly twinned mineral which appears to be adularia, pyrite and delicate rutile crystals. The most...AND ITS GENERA]. FBATURES The granite underlies an area about 25 by 35 miles in extent, mostly in Carroll...for the doctorate dealing with the geology of an area which includes some of this granite. Although it...Rattlesnake Mountain. These hills are shown on the North Conway topographic sheet published by the U. S....free from them. This sheet was at that time the north face of the quarry in its western part. In the eastern |
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| GEO LOGY AND GOLD DEPOSITS OF THE CRIPPLE CREEK DISTRICT, COLORADO BY \V ALDEl\;IAR LINDGREN A:'\D FREDERIC... . . . . . . . First geological survey of the district .............................. _• . . . . . ..................... Geological structure of the district ............... _................... __ .. _...._____________ ........ . 100 Petrology of the district ______________ . _______________________________________________...___ _ 113 Chapter IV. -General mineralogy of the district . _______________ .... ____ .. ______________ |
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| ....................................... 55 ••• See centre pages for the Russell Society Winter Programme...many plan to attend next year's A GM in Durham (see page 49). It seems no time at all since Northern...(according to theirletter heads) 'South-WestBranch', 'North West Branch' and 'South East Branch'. The Constitution...named these sections of the Society 'South-west', 'North-west', and 'Southeast' Branches. My Cotuise Oxford...case letters, I've used the terms 'SouthW est', 'North-West' and 'South-East' respectively, terms deemed |
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| VOLUME 37 NUMBER 6 $15 Wayne & Dona Leicht, 875 North Pacific Coast Highway, Laguna Beach, CA 92651 (949)...part in welcoming them back. We will now get to see a treasure trove of minerals on the market, the like...discovery spread, and soon young Alex was off to see the rabbits for himself. 507 Figure 7. “Lee Diamond...involved (and one could wish for more of these: see below). For instance, there is the 6.72-carat “Cooper...discovered since the Crater became a state park. We also see a photo of the brown, 3.43-carat “Lee Diamond,” discovered |
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| elsewhere, are shown on other maps of the State (see especially Fischer and others, 1946). MINERALS...and indexes, particularly the "Bibliographies of North American Geology," covering 1785-1957. These were...galena that had been recently found in the Tenmile district, Summit County. In his booklet, which today would...assemblage of zeolite minerals in the lava flows of North and South Table Mountains, lefferson County, the...uncommon species as any group of pegmatite bodies in North America, and they have also yielded many gem specimens |
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| ____-___-___--______--________ Previous geologic work in the district..______________________________ Page 195 196...sections of Climax molybdenum district. In pocket 24. A, Climax district in winter; B, Panorama of a part...part of Mosquito Range including Climax district.._.______-__-___ 198 25. Recrystallized schist-----------------------...---_222 32. Detailed map of Climax molybdenum district..__________ In pocket 33-37. Cross sections of...) and Maroon formations in the area northwest of the Tenmile district and east of Red Cliff- - _ _ 212 |
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| wonderful fossil insect imprint recently discovered in North Attleboro. How I wish I had GPS and a digital camera...challenge of revising and further completing my work. I am grateful to the members of the Boston Mineral Club...offices and saw a spreading rust stain on the rock face jutting out beneath the Blue Hills Tennis Club....at Boston College. In a similar formation in North Carolina, enough was found recently to warrant opening...worth pursuing." Gleba, who is also exploring in the area of the old Newbury mine and hopes sometime in his |
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| when large pockets of crystals are unearthed we can see before us hundreds, sometimes thousands, of a particular...the beauty and perfection that they experience and see around them. Crystals have influenced art and architecture...way. One can visit museums and mineral shows and see an endless selection of minerals. It is only an infinitesimal...Photographing minerals is a powerful tool to help see both the pros and cons of any given specimen. Through...formulating the criteria for selecting the minerals you see on these pages. These volumes are my personal journey |
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| RESOURCE POTENTIAL OF PIUTE COUNTY, UTAH AND ADJOINING AREA by Eugene Callaghan UTAH GEOLOGICAL AND MINERALOGICAL...study of the mineral resources of the Piute County area, prepared under a Utah Geological and Mineralogical...evaluating mineral occurrences in North and South America, Europe, North Africa and the Middle East. As...content were obtained from mining interests. The area was revisited and detailed notes and sketches from.... ... . . .. . . .. . 81 Gold Mountain Mining District .. .... . . . .. . . ... 83 Winkelman . . . . |
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| available these can be obtained from: Mrs. J. Spence, (see above). E. Otty ADVERTISING R. Watson For details...belt. An old open level was investigated on the north-east side of a hill 1.5 km N. W. of Bontddu. A small...being undertaken in other trials and mines in the area, and it is to be hoped that from time to time other...dominated by two broadcasting towers. In a small area in the city are the stock exchange, banks and mining...wa given to a new shaft to enable the remaining area of the lease to be exploited. After ten schemes |
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| .............. ..Erosion Stu.dies in the Lake District Dr. Stephen Moreton 21 ........................ethical mineral collection, and/or to a related area such as conservation or curation. The technical...commitment to the Society as we move forwards. We face a number of significant challenges in the near future...charities. Work in this area is going on behind the scenes as I write this, and you will see the results shortly...Finally, there are challenges that affect the whole area of mineral collecting, which by now you should know |
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| 718 GEOLOGY AND ORE DEPOSITS OF THE ' CREEDE DISTRICT, COLORADO BY WILLIAM H. EMMONS AND ESPER S................................................. Adularia........................................................................... 134 Exploration of district............................................................ 186 Bulldog, Kansas City Star, and North Star claims......................... 186 Bethel...of Colorado showing location of Creede mining district.............................................. |
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| Figure 2. A generalized map of the Michigan copper district showing the location of new finds mentioned in...the White Pine mine at the southern end of the district. Keweenaw Point, Keweenaw County The waters off...waters with mixed success. On a boat trip to the area in August 2000, I observed telltale air bubbles...spherulites in intrusive rhyolites in the Fish Cove area. He fprther stated that the lithophysae are lined...Jaszczak photo. Figure 5. Fish Cove showing the area where thunder eggs were COllected in the shallow |
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| 1909, the writer spent 10 days in the Carrville district, Trinity County, Cal., and, incidental to other...written. In November, 1910, another visit to the district was made, but inclement weather handicapped the...The growing economic importance of this min ing district merits notice, and it is hoped that this brief...Alien, of Aliens Camp; and many others in the district. Mr. Waldemar Lindgren, chief geologist of the...Survey No. 470,1911, pp. 11-29; The Bragdon formation: Am. Jour. Sci., 4th ser., vol. 19,1905, pp. 379-387 |
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| ....... ............... .................... 5 North-West Branch .............................. ....... 15 Conservation: a discussion document by the North-West Branch compiled by Harry Critchley ............................................... 54 I ••• See centre pages for the Russell Society Winter Programme...there any other publications you w ould like to see the Society produce? It was so me time after 11...either indoor meetings or field trips. If we don't see you, it is less easy to find out what you think about |
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| .................................. Marysville district..................................................................................... Elliston district....................................................................................... Rimini district................... .-7..........................Descriptions of special districts Continued. Rimini district Continued." , page. Descriptions of mines.......................................... 84 Helena district.........................................^.... |
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| author with sampling in the active Friedens ville area; exploration geologist Charles G. Van Ness furnished...soil geochemical data for the Woodbury prospect (see appendix to Woodbury report with data from Van Ness...through the trace-sphalerite occurrences in the York area. IV Drs. Jacob Freedman and John W. Price of...drill site), and R. L. Schmiermund (Keystone mine area base map). Donald T. Hoff of the William Penn Memorial...communi cations. His comments on the Phoenixville district and the Almedia mine, in particular, are appreciated |
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| at the Cheshire barite mines, at the copper mine north of Bristol, and at the Copper Valley Mine, two miles...rare species. During a recent field trip to the area to salvage some of the rare phosphates that were...southeastern New York State. In the Middlesex County area, actinolite occurs as coarse crystalline masses...at the limestone quarries in the Beaver Brook District of Danbury, and in Brookfield. Mountain leather...It is associated with rutile, brookite, quartz, adularia, hematite, chlorite, and other minerals. The author |
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| GEOLOGY AND MINERAL DEPOSITS OF THE SNOWMASS MOUNTAIN AREA GUNNISON COUNTY, COLORADO BY JOHN W. VANDERWILT..._-_________-__---_-_--._-___-------__.___ Northern part of area __._-____-._---_____--____-.__-________ 113 113...of area______.____--__--_---_-_-___-_--_--___.._ North Pole mine------_---.---_-----------------_.___ Galena...Page PLATE 1. Geologic map of Snowmass Mountain area, Colorado, with cross sections and oversheets showing...east face of Maroon Peak; B, Typical exposure of metamorphosed Maroon strata, looking up North Fork of |
