 | | Report (issue) | | Petroleum, Energy and Mines, Islamic Republic of Mauritania Second Projet de Renforcement Institutionnel...Epithermal Gold Deposits in the Islamic Republic of Mauritania: Phase V, Deliverable 69 By Richard J. Goldfarb...epithermal gold deposits in the Islamic Republic of Mauritania, (phase V, deliverable 69), chap. H of Taylor...Gold-Dominant Mineral Deposits and Occurrences in Mauritania ............................................................ 3 3.2 Northern Mauritanides (Inchiri Region) ......................................... |  | | Journal (article/letter/editorial) | | discovered, delineated and 62 developed in Mali, Mauritania, Senegal, Burkina Faso, Ghana and Cote d’Ivoire...by post-Eburnean sedimentary cover of 130 the Guelb el Hadid sequence, and Mesoproterozoic to Paleozoic...continue 224 westwards beneath the younger Senegal-Mauritania basin. A major basin controlling, NW- 225 trending...east-west for 800 km from the Western Sahara and Mauritania to Algeria. The 237 basin contains largely...000 km2. It 243 extends from north-western Mauritania to southwest Guinea-Bissau. The basin contains |  | | Journal (article/letter/editorial) | | evident even in the flotation tailings. Vein molybdenite was dated during this study at 80.6 ± 0.4 Ma...the Rosen IOCG district and presents an Re-Os molybdenite age, which provides a precise timing for vein...present (Popov et al., 1993). Specular hematite, molybdenite, and bornite are also prominent vein minerals...with specular hematite, chalcopyrite, pyrite, molybdenite, and subsidiary bornite, supergene chalcocite...(Surguchev et al., 2011). Molybdenite Age Determination A sample of molybdenite-bearing copper ore was collected |  | Acosta-Gongora, P., Gleeson, S. A., Samson, I. M., Ootes, L., Corriveau, L. (2015) Gold Refining by Bismuth Melts in the Iron Oxide-Dominated NICO Au-Co-Bi ( Cu W) Deposit, NWT, Canada. Economic Geology, 110 (2) 291-314 doi:10.2113/econgeo.110.2.291 | Journal (article/letter/editorial) | | States; Kuusamo schist belt, Finland; Guelb Moghrein deposit, Mauritania), suggests that Bi and Te could have...(Vanhanen, 2001), and the Cu-Au-Co ± Ni-Bi-Te-Ag Guelb Moghrein deposit (Kolb et al., 2006). These are atypical...occur in minor chalcopyrite, scheelite, and molybdenite, respectively (Goad et al., 2000). The ore minerals...The main ore minerals here are chalcopyrite, molybdenite, and uraninite. The Southern Breccia has not...Gold Arsenopyrite Scheelite Marcasite Pyrite Molybdenite Hastingsite Bismuthinite Bismuth Tourmaline Titanite |  | | Journal (article/letter/editorial) | | Bystrinskoe Cu-Au-Fe deposit (Eastern Trans-Baikal Region): Russia’s first example of a skarn-porphyry ore-forming...Jingjuan Chang, and Bo Peng 257 Zircon U-Pb and molybdenite Re-Os geochronology of coppermolybdenum deposits...oxidized and reduced granitoids from the Uetsu region, NE Japan— Yuya Izumino, Teruyuki Maruoka, and...Dung Pham, and Thi Huong Ngo 69 Zircon U-Pb, molybdenite Re-Os and muscovite Ar-Ar isotopic dating of...Fang-Fang Hu, Wen-Gang Xu, and Bo-Jie Wen 252 Molybdenite Re-Os and U-Pb zircon dating and genesis of the |  | Acosta-Góngora, P., Gleeson, S.A., Samson, I.M., Corriveau, L., Ootes, L., Taylor, B.E., Creaser, R.A., Muehlenbachs, K. (2015) Genesis of the Paleoproterozoic NICO iron oxide–cobalt–gold–bismuth deposit, Northwest Territories, Canada: Evidence from isotope geochemistry and fluid inclusions. Precambrian Research, 268. 168-193 doi:10.1016/j.precamres.2015.06.007 | Journal (article/letter/editorial) | | ferrohornblende, biotite and rare scheelite (±molybdenite) along with minor magnetite and amphibole. Retrograde...the deepest portion of the NICO system. Two molybdenite samples from the Bowl Zone and the Southern Breccia...Cobalt belt (Slack, 2012) and the Au–Cu–Co–Bi–Te–Ag Guelb deposit (e.g., Kolb et al., 2006). At NICO, mapping...isotopes, fluid inclusions and locations of the molybdenite samples used for Re–Os dating are given. (B)...scheelite, quartz and orthoclase (Fig. 4B–E). Molybdenite is scarce and localized within the NICO system |  | | Book | | deposits in Morocco, Algeria, Tunisia, Mali, Mauritania, Egypt, Sudan, and Eritrea. Originally our goal...the setting and origin of major deposits in the region, together with information on tonnages and grades...comparisons and contrasts with MVT deposits in the region. The last part is focused on sediment-hosted iron...deposits of the F’derik-Zouérate iron district in Mauritania, and presents the results of new airborne geophysical...Tunisia, and Comparisons with MVT Deposits in the Region . . . . . . . . . . 497 Sophie Decrée, Christian |  | | Journal (article/letter/editorial) | | and the largest Paleoproterozoic gold-producing region. The gold resources are concentrated within the...significance of the gold mineralization within this region. With an endowment of >2,500 t Au, the Obuasi deposit...such as iron oxide-copper-gold deposits (IOCG; Guelb Moghrain: Kolb et al., 2006), magmatic Ni-Cu-Pd...heavily for future greenfields exploration in Mauritania and adjacent countries comprising the shield...shield does indicate the high favorability of this region for concealed orogenic gold deposits. A hydrothermal |  | Oberthur, T., Melcher, F., Henjes-Kunst, F., Gerdes, A., Stein, H., Zimmerman, A., El Ghorfi, M. (2009) HERCYNIAN AGE OF THE COBALT-NICKEL-ARSENIDE-(GOLD) ORES, BOU AZZER, ANTI-ATLAS, MOROCCO: Re-Os, Sm-Nd, AND U-Pb AGE DETERMINATIONS. Economic Geology, 104 (7) 1065-1079 doi:10.2113/econgeo.104.7.1065 | Journal (article/letter/editorial) | | Department of Geosciences, Colorado State University, Fort Collins, CO 80523-1482 USA and Geological Survey...Re-Os on molybdenite, Sm-Nd on carbonates, and U-Pb on brannerite. Re-Os dating of molybdenite was difficult...difficult owing to the intimate intergrowth of molybdenite with Co arsenides and the fact that sampling...poor concentration of molybdenite. Accordingly, Re-Os dating of the impure molybdenite-sulfide mixtures yielded...attributed to (1) inadequate concentration of pure molybdenite, (2) complex Re-Os systematics, possibly involving |  | | Journal (article/letter/editorial) | | of granite-related mineral deposits across the region. Significant indium is found in sulphidebearing...than 20 main stage mineral vein systems across the region. The richest occurrences have been identified at...for targeted exploration and extraction in the region, the metal has significant potential to add value...chalcopyrite, molybdenite, pyrite, and magnetite elsewhere. The Re/Os age of molybdenite from Nakhodka...eruptions of Caradoc age that occurred in the Snowdonia region of northwestern Wales (Howells et al., 1991). |  | Chen, H., Clark, A. H., Kyser, T. K., Ullrich, T. D., Baxter, R., Chen, Y., Moody, T. C. (2010) Evolution of the Giant Marcona-Mina Justa Iron Oxide-Copper-Gold District, South-Central Peru. Economic Geology, 105 (1) 155-185 doi:10.2113/gsecongeo.105.1.155 | Journal (article/letter/editorial) | | well-defined tectonomagmatic environment in this region provides an ideal context for clarification of...Bornite Chalcocite Sphalerite Galena Carrollite Molybdenite E pidote Clinozoisite Prehnite Barite Note: supergene...stage J-VI sulfides include sphalerite, galena, molybdenite, and rare fine-grained (<25 µm), carrollite which...Fontboté, 1999; Requia et al., 2003); and Guelb Moghrein, Mauritania (Kolb et al., 2006). At Osborne, amphibole...Cu-Au-Co mineralization at the Guelb Moghrein deposit, Akjoujt area, Mauritania: Mineralium Deposita, v. 41 |  | Che, Xu-Dong, Wu, Fu-Yuan, Wang, Ru-Cheng, Gerdes, Axel, Ji, Wei-Qiang, Zhao, Zhen-Hua, Yang, Jin-Hui, Zhu, Ze-Ying (2015) In situ U–Pb isotopic dating of columbite–tantalite by LA–ICP–MS. Ore Geology Reviews, 65. 979-989 doi:10.1016/j.oregeorev.2014.07.008 | Journal (article/letter/editorial) | | Archibald, D.A., 2005. U–Pb tantalite, Re–Os molybdenite, and 40Ar/39Ar muscovite dating of the Brazil...recognition of Archean IOCG mineralization at Guelb Moghrein, Mauritania. Terra Nova 18, 345–352. Möller, P.,... 3 vein and related granites in the Keketuohai region, Altay Mountains, northwest China. J. Asian Earth |  | | Report (issue) | | Taylor and others, 2013). Large deposits in this region from which byproduct cobalt is currently or has...bismuthinite, native bismuth, arsenopyrite, millerite, molybdenite, and galena; common gangue minerals are fluorite...vein deposits have been those in the Erzgebirge region of the Czech Republic and Germany (Hermann, 2005)...occur in Pliocene alkaline basalts of the Calatrava region in central Spain (Crespo and Lunar, 1997). These...-F., 2012, Paragenesis, stable isotopes, and molybdenite Re-Os isotope age of the Lala iron-copper deposit |  | | Journal (article/letter/editorial) | | These, and probably the deposits of the East Sayan region (e.g. Zun Holba, Sora, Aksug), are part of the...formed, potentially at a similar time, but this region is dominated by deformation and plutonism associated...km along the eastern Asian Pacific margin. This region of lithosphere loss has a remarkable association...formation. The Kupol epithermal gold deposit Chukotka Region, NE Russia H. C. Golden 11/13 Proletarskaya Street...(ELIP>6105 km2; TLIP52?56105 km2). In the Noril’sk region of the SLIP the basalts stand up as mesas above |  | | Journal (article/letter/editorial) | | Norway, some 8 km from the actual contact. This region is affected by ultrahigh-temperature (UHT) granulite-facies...al., 2002, 2003; Tomkins et al., 2005; Re^Os molybdenite: Bingen & Stein, 2003; Bingen et al., 2006, 2008b;...Re–Os molybdenite 974 3 to 969 3 U–Pb zircon 955 8 Granitic gneiss Re–Os molybdenite 982 ...974 3; 959 3, 956 3 Augen gneiss Re–Os molybdenite 953 3 to 931 3 in Grt–Opx-gneiss Tomkins...910 9 Bingen et al. (2006) Qtz vein Re–Os molybdenite 918 3 to 917 3 308 Downloaded from http://petrology |  | | Journal (issue) | | Specialists in : WOLFRAM SCHEELITE CHROME MOLYBDENITE TANTALITE AMBLYGONITE COLUMBITE RUTILE ILMENITE...14 Greenocki te 15 Marcasite 16 Millerite 17 Molybdenite 18 Niccolite 19 Orpiment 20 Pentlandite 21 Pyrrhotite...which could not be cleared. That Mbela Village, ··Fort Johnston· 1 at 54 OVERSEAS GEOLOGY AND MINERAL...carried 011t in the Lebung area in the Kalahari region of the Southern Bamangwato Reserve by Mr. Jenning·s...and a borehole drilled in the central Kalahari region north-west of Kukong has yielded a supply of 1 |  | | Report (volume) | | times in 2 years at 6 sites typical of soils of the region. Leaves of swamp blackgum, Nyssa sylvatica Marsh...from a low of 0.25 ppm of Co in a cobalt-deficient region in the Coastal Plain to 118 ppm of Co in a sample...procedure was tried on the Cu deposit of Guelb Moghrein, near Akjoujt (Mauretania), and on two other localities...localities showing indications of Cu in the same region. GEOCHEMICAL PROSPECTING ABSTRACTS, JAN1. 1955-JUNE...recognized on the Ivory Coast. The study made at Akjoujt was conducted under particularly favorable conditions |  | | Report (issue) | | array occupies the site of a former landfill at Fort Carson, Colorado. Tellurium is a critical component...production for the period 2006–10, by country or region and amount.......................................showing selenium concentrations in coal samples, by region of the United States.............................tellurium refinery production in 2013, by country or region..................................................485 p. Sears, Louis, 2011, Jargon alert—Utility: Region Focus (Federal Reserve Bank of Richmond), v. 15 |  | | Book | | minerals are also found, and occasionally also molybdenite, graphite, gold, and others. At Magnet Heights...("solutions", "melts", and " v a p o r s ' " in this region are not sharply distinguishable). However, this...according to recent work) molybdenite molybdenite molybdenite i powellite molybdenite (partly hydrotherm...fluid (supercritical), pass below 400 °C into the region of liquid aqueous solutions. At the same time their...mainly replacements, the pyrite-chalcopyrite-molybdenite associations are often impregnations. The alterations |
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