 | | Journal (article/letter/editorial) | | Re-Os Geochronology of Quartz-Enclosed Ultrafine Molybdenite: Implications for Ore Geochronology C. J. M....Durham DH1 3LE, United Kingdom Abstract Re-Os molybdenite geochronology relies on the aliquant analysis...separate. Although suitable for coarse-grained molybdenite samples, traditional mineral separation techniques...ideally suited for samples possessing fine-grained molybdenite (<50 mm) and thus hamper the application of Re-Os...isolating ultrafine molybdenite (i.e., <50 mm) for Re-Os geochronology. Six Re-Os molybdenite model ages from |  | Lawley, C., Selby, D., Imber, J. (2013) Re-Os Molybdenite, Pyrite, and Chalcopyrite Geochronology, Lupa Goldfield, Southwestern Tanzania: Tracing Metallogenic Time Scales at Midcrustal Shear Zones Hosting Orogenic Au Deposits. Economic Geology, 108 (7) 1591-1613 doi:10.2113/econgeo.108.7.1591 | Journal (article/letter/editorial) | | Re-Os Molybdenite, Pyrite, and Chalcopyrite Geochronology, Lupa Goldfield, Southwestern Tanzania: Tracing...Re-Os molybdenite, pyrite, and chalcopyrite geochronology at five shear-hosted Au occurrences (Kenge, Mbenge... Konokono, and Dubwana) in the Lupa goldfield, southwestern Tanzania, is reported in this paper. Au occurrences...occurrences within the Lupa goldfield share many geologic similarities with the orogenic Au deposit type and are...Tanzanian cratonic margin. Pyrite ± chalcopyrite ± molybdenite-bearing fault-fill veins and mylonitic shear |  | | Journal (article/letter/editorial) | | Mineralization During Transpression: Lupa Goldfield, Southwestern Tanzania Christopher Lawley,1,*,† Jonathan...Au mineralization in the western Lupa goldfield, southwestern Tanzania was associated with transpression...and fluid-assisted diffusive mass transfer. The Kenge mineral system is situated along a NW-SE-trending...self-consistent explanation for the different vein styles at Kenge and Porcupine and extends the classic fault valve...frictional reactivation suggests the following: (1) the Kenge shear zone was intrinsically weaker than the Porcupine |  | | Journal (article/letter/editorial) | | Winter Meeting of the Geological Society’s Mineral Deposit Studies Group and the Applied Mineralology Group...East Asian orogenic gold Craig J. R. Hart1, Richard J. Goldfarb2 1 Mineral Deposit Research Unit, Department...USA Orogenic gold systems comprise the largest number of gold deposits and greatest gold endowment of...settings that do not fit current models for orogenic gold deposits. These uncertainties conspire to cause...sources regarded to be integral to the orogenic gold deposit model. The vast landmass of Eastern Asia (China |  | | Journal (article/letter/editorial) | | UK The world-class carbonate-hosted Navan Zn–Pb deposit, Ireland, is Europe’s leading zinc producer. The...Ore depositional processes in the Navan Zn–Pb deposit, Ireland, Econ. Geol., 93, 535–563. Fallick, A...Mines, Golden, CO 80401, USA The Kamoa copper deposit, Central African Copperbelt, Democratic Republic...consistent with an unconformity controlled uranium deposit (Bowell, 2011; Le Roux and Toens, 1982). Uranium...comprises deposit fragments that occur within or above similar breccias. Typical of the deposit class, deposits |
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