| | Journal (article/letter/editorial) | Because most of its mine development occurred in the late 1800s, this district, with its approximately...HAWK (also known as Bullard Peak) district is the largest district of the silver-nickel-cobaltbismuth-uranium-arsenic...Kongsberg, Norway; Bou Azzer, Morocco; and the Consols mine at Broken Hill, New South Wales, Australia. These...also in number of mineral species. The Black Hawk district contains over fifty recorded species, while some...replacement features. During mining operations in the Black Hawk district, significant amounts of specimen | | | Journal (article/letter/editorial) | number of generations of shear folds have produced ribbon mylonites (R) in the least deformed areas and relatively...orientations in the outcrop (scale in cm, Locality 4). e Ribbon mylonite in mesobanded quartz-magnetite (mt) rock...b e r of marble occurrences from the Gairloch district and noted that in many cases the carbonates are...protoliths must have contained silicates such as chamosite-greenalite series minerals and/or detrital components...have been derived from mixtures of quartz and chamosite with greenalite and/or siderite-ankerite. The | | | Journal (article/letter/editorial) | Mountain Mine (or Bulldog Mine) A Legacy Rich In Silver Creede Mining District, Mineral County, Colorado...Colorado, USA By Ken Kucera Fabulous mineral specimens from the rich Bulldog Mountain Mine grace private and...and mineral associations. Also recovered from the mine was an abundance of fine, wellcrystallized baryte...of the Bulldog Mountain Mine 7 “Close, But No Cigar” 7 The Homestake Mining Company 8 “Pirate’s Treasure...Paradise 11 Mineralogy and Paragenesis Bulldog Mountain Mine 11 Six Stages of Mineraliza�on 18 Minerals Overview | | | Journal (article/letter/editorial) | Mountain Mine (or Bulldog Mine) A Legacy Rich In Silver Creede Mining District, Mineral County, Colorado...Colorado, USA By Ken Kucera Fabulous mineral specimens from the rich Bulldog Mountain Mine grace private and...and mineral associations. Also recovered from the mine was an abundance of fine, wellcrystallized baryte...of the Bulldog Mountain Mine 7 “Close, But No Cigar” 7 The Homestake Mining Company 8 “Pirate’s Treasure...Paradise 11 Mineralogy and Paragenesis Bulldog Mountain Mine 11 Six Stages of Mineraliza�on 18 Minerals Overview | | | Journal (article/letter/editorial) | Mountain Mine (or Bulldog Mine) A Legacy Rich In Silver Creede Mining District, Mineral County, Colorado...Colorado, USA By Ken Kucera Fabulous mineral specimens from the rich Bulldog Mountain Mine grace private and...and mineral associations. Also recovered from the mine was an abundance of fine, wellcrystallized baryte...of the Bulldog Mountain Mine 7 “Close, But No Cigar” 7 The Homestake Mining Company 8 “Pirate’s Treasure...Paradise 11 Mineralogy and Paragenesis Bulldog Mountain Mine 11 Six Stages of Mineraliza�on 18 Minerals Overview | | | Journal (article/letter/editorial) | Mountain Mine (or Bulldog Mine) A Legacy Rich In Silver Creede Mining District, Mineral County, Colorado...Colorado, USA By Ken Kucera Fabulous mineral specimens from the rich Bulldog Mountain Mine grace private and...and mineral associations. Also recovered from the mine was an abundance of fine, wellcrystallized baryte...of the Bulldog Mountain Mine 7 “Close, But No Cigar” 7 The Homestake Mining Company 8 “Pirate’s Treasure...Paradise 11 Mineralogy and Paragenesis Bulldog Mountain Mine 11 Six Stages of Mineraliza�on 18 Minerals Overview | | | Report (issue) | GEOLOGIC RELATIONS BY EDMUND CECIL HARDER WASHINGTON GOVERNMENT PRINTING· OFFIOE 1919. CONTENTS...Kennedy mine, Cuyuna, Minn.; B, Photomicrograph of ocherous scum on 262-foot level, Kennedy mine, Cuyuna...ocherous, gelatinous scum from 100-foot level, Federal mine, Hazel Green, Wis .................... ·. . . ....100-foot level, Federal mine, Hazel Green, Wis.; B, Photomicrograph of double twisted ribbon-like form of Spirophyllum...Judson mine, Alpha, Mich.; B, Photomi~ crograph of ocherous scum from 200-foot level, Judson mine, Alpha | | | Journal (article/letter/editorial) | Dunite of Crustal Origin at the Parker Phlogopite Mine, Notre-Dame-du-Laus, Quebec, Canada Robert F. Martin... Abstract: The Parker phlogopite mine, located near Notre-Dame-du-Laus, Quebec, 74 km...Metasedimentary Belt of the Grenville Province, the Parker mine is exceptional because of the association of forsterite...dunite; polymineralic globules; late oxidation; Parker mine; Notre-Dame-du-Laus; Quebec; Canada 1. Introduction...these. Among all these deposits, the Parker mica mine, located near Notre-Dame-du-Laus, Quebec (46◦ 05 | | Abia, El Hassan, Benssaou, Mohammed, Abioui, Mohamed, Ettayfi, Najat, Lhamyani, Brahim, Boutaleb, Said, Maynard, James Barry (2020) The Ordovician iron ore of the Anti-Atlas, Morocco: Environment and dynamics of depositional process. Ore Geology Reviews, 120. 103447 doi:10.1016/j.oregeorev.2020.103447 | Journal (article/letter/editorial) | University of Cincinnati, Cincinnati, OH 45221-0013, USA b Department Abstract In Morocco, iron deposits...attractive countries for mining investment. It has a long history of mining, both artisanal and corporate...rocks; to important silver mines in the Imiter district, associated with Neoproterozoic rhyolites; and...the mining geology of the Anti-Atlas region of Morocco, with the ultimate aim of enhancing mining exploration...by the CMMF (Moroccan Iron Mining Company) for the development of mining potential, three levels of ferruginous | | | Book (volume) | in granodiorite, Sultan Basin, Snohomish Co., Washington (Axelrod and Grimaldi, 1949). 3T structure. 6...(Includes 0-19% other components). 10. Mariposite, Ross Mine, Hislop township, Ontario (Moore, 1936). Anal. Moorehouse...zone, Lake Hammersley, Clove quadrangle, Dutchess County, New York (Barth, 1936). Anal. T. F. W. Barth (Recalculated...replacement veins in the granodiorite of Snohomish County, Washington, and is considered by Axelrod and Grimaldi... Structural and petrologic studies in Dutchess County, New York. Pt. II. Bull. Geol. Soc. Amer., vol | | | Report (issue) | 37 37 39 39 40 41 Walker Mine Buckingham galena occurrence Dominion Mine Road-cuts on Val-des-Monts...road Haycock Mine Sabourin property Rainv ille (Dugas) Mine Wallingford Mine Jackson Rae Mine Blackburn...Blackburn Mine Bell graphite mine Feldspar quarry Peerless (Diamond) Mine Road-cut Cadieux quartzite quarry Emerald...Emerald Mine Pedneaud quarry Derry Mine Daisy Mine Jack (Jake) Lake Mine Burnt Lake Mine Back (Wallingford)...(Wallingford) Mine Smith Lake Mine Davis Mine Glen-Almond Mine Cole Lake Mine Perkins feldspar mine Little Rapids | | | Journal (article/letter/editorial) | and reduction of clay minerals, particularly chamosite and nontronite. are compared with those of the...containing hydroxylated silicates are not extensive. Chamosite has been studied by Brindley and Youell (1953)...latter workers is extended here to samples of chamosite, nontronite and a montmorillonite. Oxidation...electron to reach the surface than does a narrow ribbon. Hence this factor for the inhibition of oxidation...and Youell (1953) attempted to restore oxidized chamosite to its original state by heating it in an atmosphere | | | Journal (article/letter/editorial) | the post-Carboniferous igneous activity in the district (see especially Scott in Gibson, 1925, p. 86)...elongated in a common direction and are sometimes even ribbon-like. The rocks could be termed quartz-schists...carbonates and of a green mineral shown later to be chamosite (the " serpentinous material " of Barrow in Gibson...1905, p. 131). Dixon has already suggested that chamosite may be more widespread in the sediments of the...impression of erosion. A chamosite oolith has concentric zones of chamosite (Ch) and calcite. This oolith | | | Journal (article/letter/editorial) | mineral deposits. Fe-bearing phyllosilicates, e.g. chamosite, in the Early Ordovician and Jurassic ironstones...and a period of more than two thousand years of mining metal deposits have almost ceased. But this is...three continents from Poland, through Morocco to the USA (Fig. 2). The Variscides evolved in the foreland...extending from Belgium, in the West, through the Ruhr District, Germany, to the Upper Silesian Coal Basin, Poland...There are some technical terms which were coined by mining engineers at work, embedded in the consciousness | | | Report (issue) | BEDDED IRON ORES : A. THE FERROUS ORES. I. Chamosite and Chamosite-siderite J.\iludstones: Cleveland Ironstone...ORES (contd.) : B. THE FERRIC ORES. IV. Ferric Chamosite Oolites: North Wales, Rosedale and Northants Ores...reactions. Mineral fades. Bacterial action. 90 Chamosite-sidcritc calcite. Sundry 104 VI.-WEATHERING...iron ores was occasioned by the development of new mining areas, and the description of the English ores...Haematites of West Cumberland, Lanca.~hire and the Lake District. By B. Smith, M.A. 236 pp. 5 plates, 31 text figures | | | Journal (issue) | Bartlett, his father in-law, smelting innovator and mining entrepreneur. I was introduced to W. P. Cleveland...geology, and especially the mineralogy, of the district. In those days there were no Xerox machines so...locate and plot all of the mines in the Bisbee district for collecting that coming summer. I also studied...college I was very active in surface collecting the mine dumps and clandestine collecting underground in...He showed me around the office and said the three mine geologists were underground on their rounds. He | | | Report (issue) | N-1321 Stabekk Norway F. S. Nordrum The Norwegian Mining Museum N-3600 Kongsberg Norway H. K. Schonwandt...aa, 16H7 . t Oretlt. ft /Mm# »f.i Falu copper mine has been continuously mined for more than 900 years...Dahlberg’s Sveda Antiqua et Hodierna. 6 FOREWORD Mining has ancient traditions in Scandinavia and Finland...by the old miners in Bergslagen. The most famous mining districts in Norway are Kongsberg, where silver...copper was mined from 1644 until recently. The first mine in Finland was the Ojamo iron ore deposit, which | | | Journal (article/letter/editorial) | type type Kaolin minerals Serpentine minerals Chamosite Amesite Greenalite Cronstedtite etc. Talc Pyrophyllite...hectorite, which develop as fibrous forms. Beautiful ribbon-like crystals have been observed in electron micrographs...minerals in recent years has been the mineral chamosite (Brindley 1951b). This is a finegrained hydrated...would not be surprising- if . . . the original chamosite t u r n e d out to be b a v a l i t e " , which...type material (cf. Hallimond, 1951b), tlie term chamosite is now too widely used for the silicate mineral | | | Book | regular models I. Layer-structures 5 11. Layer-ribbon-structures 17 C. Structure of Crystalline Clay...random fashions 18 I. Layer-structures 18 11. Layer-ribbon-structures 25 D. Interstratification and Intergrowth...4.3. Minerals of the 1: 1 layer-type 11. Layer-ribbon-structures C. Structure of crystalline clay minerals:...Diffuse scattering by X-rays and electrons 11. Layer-ribbon-structures D. Interstratification and intergrowth...clinochlore (Mg5Al)(Si,Al)Ol,(OH))8 Fe-chlorite chamosite (Fe: AI)(Si,Al)O o(OH)8 Nichlorite nimite (Ni5AI)(Si3Al)OIo(OH)8 | | | Book | regular models I. Layer-structures 5 11. Layer-ribbon-structures 17 C. Structure of Crystalline Clay...random fashions 18 I. Layer-structures 18 11. Layer-ribbon-structures 25 D. Interstratification and Intergrowth...4.3. Minerals of the 1: 1 layer-type 11. Layer-ribbon-structures C. Structure of crystalline clay minerals:...Diffuse scattering by X-rays and electrons 11. Layer-ribbon-structures D. Interstratification and intergrowth...clinochlore (Mg5Al)(Si,Al)Ol,(OH))8 Fe-chlorite chamosite (Fe: AI)(Si,Al)O o(OH)8 Nichlorite nimite (Ni5AI)(Si3Al)OIo(OH)8 | | | Report (issue) | COVER PHOTO : Gold nugget from Dukes Creek, White County, weight 5 oz., 12 dwt., approx. 2x. BACK COVER...approx. 1.5x. Lower left - Goethite from Pulaski County, approx. lx. Right - Magnetite crystal face showing...Geophysical studies Hydrology Economic geology Mining directory Environmental studies Engineering studies........................................... 151 Chamosite .......................................................................................... 170 County Index ........................................ | | | Report (volume) | or Documents U.S. Government Printing Office Washington, DC 20402 (Check or money order must be payable...Battery St. SPOKANE, Washington--U.S. Courthouse, Rm. 678, West 920 Riverside Ave. WASHINGTON, D.C.--U.S. Department...Government UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1992 For sale by the Books and Open-File Reports...The data for each deposit include placer type, mining method(s), production history, bedrock source,...the three deposit types. Tabulated data for each district include tonnage, grades, basement rocks, and references | | | Report (issue) | lack of finance. Due to the resurgence of lead mining and prospecting between 1948 and 1955, when new... . . . . . . . . . . . . Lead. zinc and silver mining in Western Australia .... History and production...the lead ores . . . . . . . . .... Northampton District . . . . . . . . .... Baddera group ........ ....occurrence .... Baddera mine . . . . . . . . .... Baddera North .... .... Gurkha mine ........ Page ...... . . . . Nooka mine . . . . . . . . . . . . Nooka South prospect .... Nooka West mine ........ Lucky | | Kameda, Jun, Hina, Shoko, Kobayashi, Kyoko, Yamaguchi, Asuka, Hamada, Yohei, Yamamoto, Yuzuru, Hamahashi, Mari, Kimura, Gaku (2012) Silica diagenesis and its effect on interplate seismicity in cold subduction zones. Earth and Planetary Science Letters, 317. 136-144 doi:10.1016/j.epsl.2011.11.041 | Journal (article/letter/editorial) | 27 December 2011 Editor: R.W. Carlson Keywords: ribbon chert subduction zone silica diagenesis 2011 Tohoku...c t The diagenesis and deformation processes of ribbon cherts embedded in a Jurassic accretionary complex...Elsevier B.V. All rights reserved. 1. Introduction “Ribbon cherts” (folded red radiolarian cherts) are ubiquitous...subduction zone. The geological record preserved in “ribbon cherts” would therefore provide clues to the nature...In the present study, we revisit a well-studied “ribbon chert” within a late Jurassic accretionary complex | | | Journal (article/letter/editorial) | the somewhat poorly drained Brill soil (Menominee County, WI). Micaceous vermiculitic soils included were:...one mile southeast of White Mountain Peak (Mono County, CA). Nontronite (Wards, Clay Mineral Standard...0·1 0·1 0·2 0·4 0·4 1·0 0·6 0·3 1·4 Nontronite (Washington) 2·7 0·4 0·5 0·5 3·5 2·9 Muscovite 0·5 0·4 0·2...charge balance. Two studies involved heating chamosite in the presence of oxygen, with conclusions drawn...9 19 14 9 23 9 54 73 39 70 17 31 Nontronite (Washington) 393 443 181 275 456 45 Muscovite 41 36 63 58 |
|