 | | Report (issue) | | not coincide with the Google-Earth images of the mine workings. The authors wish to thank William F. Cannon...Sandstone uranium, unconformity uranium, basalt copper, iron oxide copper gold deposits, and Kipushi Cu-Pb-Zn...Alteration Green, white, or gray rocks rich in Fe-calcite and chlorite result from reaction of reducing fluids...evaluating the environmental factors involved in mining sediment-hosted copper deposits. Chalcocite and...zone are fairly stable minerals in the oxidizing mine environment, and pyrite occurs only as trace amounts |  | Hodges, C.A., Cox, D.P., Singer, D.A., Case, J.E., Berger, B.R., Albers, J.P. (1984) U.S. Geological Survey-INGEOMINAS mineral resource assessment of Colombia. Open-File Report Vol. 1984 (84-345) US Geological Survey doi:10.3133/ofr84345 | Report (issue) | | substantial possibilities for the occurrence of bauxite, iron, uranium, gold, diamonds, rare earths, possibly...gem-quality emeralds; in addition, barite, silver, iron, and, since 1982, nickel are mined. Several porphyry...occurrence of bauxite, sandstone-hosted leadzinc, iron formation, uranium, paleoplacer gold and diamonds...complex mineralogy (such as the California-Vetas district) would be useful, not only for exploration in...the Eastern Cordillera at the California-Vetas District (Domain 23) (Sillitoe and others, 1982). Undiscovered |  | | Report (volume) | | 1C402, 12201 Sunrise Valley Dr. SALT LAKE CITY, Utah--Federal Bldg., Rm. 8105,125 South State St. SAN...skarn deposits 93 Tonnages of Fe skarn deposits 97 Iron grades of Fe skarn deposits 97 Generalized map showing...rock types 133 Cross section through the Kalavos district Cyprus showing relationship of massive sulfide...Tonnages of volcanic-hosted magnetite deposits 173 Iron grades of volcanic-hosted magnetite deposits 174...Tonnages of Algoma Fe and Superior Fe deposits 229 Iron grades of Algoma Fe and Superior Fe deposits 230 |  | | Report (volume) | | 1C402, 12201 Sunrise Valley Dr. SALT LAKE CITY, Utah--Federal Bldg., Rm. 8105, 125 South State St. SAN...25. Tonnages of oolitic ironstone deposits 41 26. Iron grades of oolitic ironstone deposits 42 27. Silica...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...gneiss-hosted gold model (No. 37c) is based on the Tumco mine group and American Girl-Padre y Madre mines in the |  | | Report (issue) | | PUBLICATION 91-2 APRIL 1991 UTAH GEOLOGICAL AND MINERAL SURVEY a division of UTAH DEPARTMENT OF NATURAL RESOURCES...of the UGMS is to provide geologic information of Utah through publications; the formal publication series...Geologist Salt Lake City, Utah MISCELLANEOUS PUBLICATION 91-2 APRIL 1991 UTAH GEOLOGICAL AND MINERAL SURVEY...SURVEY a division of UTAH DEPARTMENT OF NATURAL RESOURCES Table of Contents Abstract . . . . . . .... . . . . . . . . . . . . . . 5 San Francisco District . . . . . . . . . . . . . . . . . . . . ⢠. . |  | | Journal (article/letter/editorial) | | Geosciences, University of Arizona, Tucson, AZ 8572 I. USA Abstract-Values of 637Cl can now be routinely measured...ore and gangue (sphalerite, fluorite, calcite 2, barite, and calcite 3) each yielded multiple ?j3âC1measurements...but not in accord with the 1989 analysis. EWS, a calcite from Elmwood, TN, was also repeated; and the result...sphalerite sphalerite calcite 2 calcite 2 calcite 2 fluorite fluorite barite barite calcite 2 barite barite...Gordonsville mine 52 53 s4 55 S6 P102592 P102630 P102649 sphalerite sphalerite sphalerite calcite 3 S"C1 |  | | Journal (article/letter/editorial) | | 1-50121 Firenze, Italy Abstract. The Dachang mining district is the second largest producer of Sn in China...stockwork mineralizations. The metallogeny of the district may be interpreted in terms of an Upper Devonian...Yanshanian magmatism. A peculiar feature of the district is the economic importance of the sulfosalts (chiefly...the complex multielemental association of the district are reminiscent of the Sn-sulfide-sulfosalts deposits...Bolivia (Routhier 1980). In the recent years the district has been the target of detailed exploration programs |  | | Book | | approximately 5 cm taii and is from the Eagle's Nest mine, Piacer County, California. Ross Beaty Collection. Photograph...metamorphic, intrusion-related, sedimentary, hot spring, iron-oxide-copper-gold (IOCG), and Mississippi Valley...References: Chace F.M. (1956) Abbreviations in field and mine geclogical mapping. Economic Geclogy, v. 51, p....Features Acanthile in hand specimen iS lead-grey to iron-black with metellic lustre (which tarnishes to dark...Metallogeny of the Proterozoic Rocks of Thunder Bay District, Ontario. PhD. thesis. University of Western Ontario | | | Report (issue) | | ............................................ 8 Mining Methods .........................................Nevada as well as in southern Idaho and western Utah (Roberts, 1966; Hofstra and Cline, 2000; Cline and...subtypes, development state, tonnages and grades, mining and processing methods, geologic setting, deposit...rock are aggregated if they are (or were prior to mining) within 200 meters of each other. This is less...âAccurateâ is a verified location based on a surface mine, tailings, or surface disturbance supported with |  | | Journal (article/letter/editorial) | | and Genesis of Tungsten Mineralization in Dayu District, Jiangxi (People's Republic of China): An Outline...scheelite, clorite, sericite, fluorite, quarzo, calcite). L a metallogenesi di Dayu, sviluppatasi in un...is the center of the m o s t important tungsten district of P R C . Valuable quantities of Sn, Mo, Bi,...scheelite, chlorite, sericite, fluorite, quartz, calcite). T h e fracture-controlled mineralizations of...is the center of the m o s t important tungsten district of China; the production in the last two years |  | | Report (issue) | | BILLINGS, Geoscience PAIGE W. CHRISTIANSEN, Historian-Mining ALLAN R. SANFORD, Geophysics F RA N K B. TITU... BULLETIN 10 The Geology and Ore Deposits of Sierra County, New Mexico by GEORGE TOWNSEND HARLEY 1934 New...Director A Division of New Mexico Institute of Mining and Technology Stirling A. Colgate, President ...Sec. 63-1-4 Printed by New Mexico Institute of Mining & Technology Photo Laboratory, Sept. 1972 Bound...------------------------------------------- 15 Mining districts 16 Climate and vegetation ---------- |  | | Book | | gravel of streams and in veins. The veins of Gilpin County are especially noteworthy for the amount of gold...leaf gold were taken from the Printer Boy mine, Lake County, in tellurium in many in 1870. In combination...combination with of the mines in Boulder County. SILVER. occurs crystallized in cubes, octahedrons...The Boulder Nest mine in Clear Creek County, and the Caribou mine in Boulder County were especially productive...me- tallic. Has been found sparingly of Boulder County. in the tellurium-bearing mines Minerals of |  | Schneider, J., Boni, M., Lapponi, F., Bechstadt, T. (2002) Carbonate-Hosted Zinc-Lead Deposits in the Lower Cambrian of Hunan, South China: A Radiogenic (Pb, Sr) Isotope Study. Economic Geology, 97 (8) 1815-1827 doi:10.2113/gsecongeo.97.8.1815 | Journal (article/letter/editorial) | | galena, pyritemarcasite, fluorite, barite, and calcite, and (2) a subsequent noneconomic stage with nodular...ore stages are postdated by a generation of late calcite. Main-stage sulfides (206Pb/204Pb = 18.162â18.225)...for the Zn and Pb in the deposits of the Huayuan district. The Pb and Sr isotope mixing trends observed...large deposits. This may indicate that the Huayuan district is not a favorable target for future exploration...Zn-Pb(-Fe) sulfides in larger deposits throughout the district, with a grade never exceeding 8 percent combined |  | | Book (volume) | | up 165 for to Temiskaming Cochrane district read district. Ref. 4, under oruetite, add See also... for VVakatipu district, CoUingwood, 294 Zealand read Wakatipu 303 line district, 8 in synonomy...and the corresponding citation (Hudson Bay 309 mine). in Ref. 4, line Z, for 670 read 676. 310 in...pageite read paigeite. for Algoma district read Sudbury District. in the left Itand figure in the...say that this guarantee did much to deterrepaid. mine the award of the grant. To Mr. W. 0. Wiley, Chairman |  | | Journal (issue) | | galena dal distretto di Bou Azzer nonchĂŠ della calcite esagonale (impropriamente VATERITE) dalla miniera...barite azzurra dai prezzi ancora molto elevati. Dalla Cina, che ha notevolmente diminuito il suo export a causa... arrivano ennesime nuove cristallizzazioni di calcite, sempre spettacolari ed a bassi costi. Con la varietĂ ...miniera del distretto di Ica di clinoatacamite. Dalla Cina nuovi ritrovamenti nella Mongolia interna della...tavoli si potranno trovare campioni di gesso, calcite, talco, pirite, granato, vesuviana, epidoto, quarzo |  | Doebrich, Jeff L., Albino, G.V., Barker, C.E., Duffield, W.A., Dunn, V.C., Hanna, W.F., McFarlan, J.P., McGuire, D.J., Miller, M.S., Peters, S.G., Plouff, Donald, Raines, G.L., Sawatasky, D.L., Spanski, G.T. (1994) Resource assessment of the Bureau of Land Management's Winnemucca District and Surprise Resource Area, Northwest Nevada and Northeast California. Open-File Report Vol. 1994 (94-712) US Geological Survey doi:10.3133/ofr94712 | Report (issue) | | OF THE BUREAU OF LAND MANAGEMENT'S WINNEMUCCA DISTRICT AND SURPRISE RESOURCE AREA, NORTHWEST NEVADA AND...the Bureau of Land Management's (BLM) Winnemucca District and Surprise Resource Area, an area covering 13...Rock National Conservation Area), and the impact of mine dewatering on drainage basin groundwater resources...part of their Resource Management Plan for the District/Resource Area or for other planning units such...Nevada together comprise the BLM's Winnemucca District. The Surprise RA is located in extreme northwest |  | | Book | | Rehoboth The Central and South-CentralDeposits Onganja Mine and Surrounding Copper Deposits The South The Pegmatitesin...natural science museums in the World, and our Tsumeb Mine has been labeled the "World's greatest mineral locality"...World's largest hard-rock tin mine and the World's largest open pit uranium mine. Geotourism and collecting...deposits, and today, Namibia is the 5th largest mining country in sub-Saharan Africa. Several of the mineral...Tsumeb. Sudwestafrika). In the FirstWorld War Today,mining playsan important rolein Namibia wasoccupied bytheBritishtroops |  | | Journal (issue) | | stessa. Tra tutti è da citare la calcite globulare detta proprio âcalcite di Montaltoâ (fig. 3). In questo...caratteristiche cristallizzazioni mammellonari di calcite e per le numerose e rare specie rinvenute negli...Romana (e quindi Fig. 3 â Aggregati globulari di calcite (il maggiore 25 mm) in una cavitĂ vacuolare della...processi aperti di idrotermalismo è proprio la famosa calcite globulare di Montalto di Castro, nota per le sue...in grado di ritrovare almeno un campioncino di calcite globulare, solo i piĂš pazienti saranno in grado |  | | Journal (article/letter/editorial) | | Roter Kamm, Namibia (Koeberl et al. 1989); Manson, USA (McCarville & Crossey 1996); Vredefort, South Africa...minerals include illite, montmorillonite, analcite, calcite, siderite, K-feldspar, quartz, barite and chlorite...assemblages: (i) chlorite + albite + epidote + calcite, associated with andradite garnet, epidote and...prehnite + calcite + pyrite, absence of Ca â Fe silicates; and (iii) zeolites + apophyllite + calcite + anhydrite...amphibole, epidote, sericite, chlorite, quartz, calcite and fluid inclusions. Textural relationships show |  | | Journal (issue) | | amazzoni te, meteoriti, dolomite rosa, atacamite, calcite, ematite, granati almandino- hessonite andradite...costituite da quarzo, miche, clorite, feldspati e calcite come costituenti principali e sostanze carboniose... _II materiale proveniente dalla "volata" delle mine viene caricato dalle pale frontati e gettato entro...galena, fluorite, anidrite, dolomite, ankerite e calcite in campioni di notevole effetto estetico. 2- Calcopirite...tetraedrite, sfalerite, arsenopirite, antimonite, calcite, dolomite, ankerite, tetraedrite, boumonite. 6 |  | | Journal (issue) | | Terra UniversitĂ di Torino. I MINERALI Albite, calcite in cristalli scalenoedri di colore avorio, calcopirite...SCIENZA Melanite (a sinistra), solfuro (in centro), calcite (a destra). Copiapite (a sinistra), UK (in centro)...dal Madagascar, dallâIndia, dal Sudafrica, dagli Usa, dal Brasile, dallâAustralia arriviamo agli anni...nostra Regione. Lâarrivo, a fine anni â90, della Cina dava il colpo di grazia definitivo alla mineralogia...Ma non solo, lâarrivo in massa di espositori da Cina, Marocco, India, Pakistan portava obbligatoriamente |  | | Journal (issue) | | GR. Coli. e fo10 Giancarlo Brizzi. ADVISE TO OUR USA AND CANADA SUBSCRIBERS: The circulation agents for...MINERALOGICAL RECORD P.O. BOX 35565, TUCSON. ARIZONA 85740, USA. Please state thc purpose of your payment and your...perpuovi luoghi di ritrova :E E O ini abbonamenti": MINE Sode Verla GmbH ⢠Postfach 405 ⢠D- E' uscito...Lucky Knoch a Tonasket. Okanogan County nello stato di Washington (USA). Al nuovo minerale ĂŠ stato dato...Hills, localitĂ -tipo posta nello stato del Nevada (USA) dove fu scoperta nel 1985. A Pereta la mopungite |  | | Journal (issue) | | matrice: nei rari casi di campioni inglobati nella calcite, per acidatura, si possono evidenziare cristalli...Purtroppo nei numerosi massi a spessartina la calcite è praticamente assente e quindi solo raramente...comuni Actinolite (Foto 16), albite (Foto19), calcite (Foto 23), calcopirite (Foto 24), crisotilo (Foto...a Torre Cives (ancora attiva); alcune cave di calcite (se ne riconoscono i resti di almeno due), a Vidracco;...all'azzurro, dall'arancione al verdastro(?) ). CAVE DI CALCITE DI VIDRACCO Nei dintorni del Comune di Vidracco |  | | Journal (article/letter/editorial) | | and Watson, E.B., Oxygen diffusion in monazite Cina, S.E., see Macdonald, F.A. Clocchiatti, R., Condomines...Dresen, G., High-temperature creep of synthetic calcite aggregates: influence of Mncontent Friederich,...226 (2004) 449 Macdonald, F.A., Bunting, J.A. and Cina, S.E., Erratum to bYarrabubbaâa large, deeply eroded |  | Spiridonov, Ernst M., Serova, Alevtina A., Kulikova, Inna M., Korotaeva, Natalia N., Zhukov, Nikolay N. (2016) Metamorphic-Hydrothermal AgâPdâPt Mineralization In the Noril'sk Sulfide Ore Deposit, Siberia. The Canadian Mineralogist, 54 (2) 429-452 doi:10.3749/canmin.1500028 | Journal (article/letter/editorial) | | late zeolite facies. The Rb-Sr age (apophyllite, calcite, metabasalts) of metamorphism varies from 232 Ma...over about 1 Ma. The plate cover in the Norilâsk district is deformed. The sedimentary sequences and volcanic...the trap association and ores in the Norilâsk district. (1) Basalt (Lightfoot et al. 1993, Szamanske...1), all of the trap rocks in the Norilâsk ore district have a common mantle source. The mantle-derived...ISOTOPIC DATING OF SYNGENETIC APOPHYLLITE AND CALCITE FROM METAMORPHICHYDROTHERMAL MINERALIZATION, NORILâSK |
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