 | | Journal (article/letter/editorial) | | Skarns in the Riba de Alva Mine, Northeastern Portugal L. MIGUEL GASPAR† Departamento de Geologia, Faculdade...Faculdade de Ciências, Universidade de Lisboa, Bloco C2, Campo Grande, 1700 Lisboa, Portugal AND CARLOS...Lisboa, Portugal Abstract The metasediment-hosted distal scheelite skarns from the Riba de Alva mine, Barca...Barca de Alva-Escalhão region, northeastern Portugal, consist of three main levels of strata-bound, boudin-shaped...diopside ± anorthite; amphibole-epidote skarns with actinolite + clinozoisite ± bytownite ± phlogopite; ore |  | Köhler, Martin, Hanelli, Delira, Schaefer, Stefan, Barth, Andreas, Knobloch, Andreas, Hielscher, Peggy, Cardoso-Fernandes, Joana, Lima, Alexandre, Teodoro, Ana C. (2021) Lithium Potential Mapping Using Artificial Neural Networks: A Case Study from Central Portugal. Minerals, 11 (10) 1046 doi:10.3390/min11101046 | Journal (article/letter/editorial) | | Artificial Neural Networks: A Case Study from Central Portugal Martin Köhler 1, * , Delira Hanelli 1 , Stefan...Artificial Neural Networks: A Case Study from Central Portugal. Minerals 2021, 11, 1046. https://doi.org/10.3390/min...Sciences, University of Porto, 4169-007 Porto, Portugal; joana.fernandes@fc.up.pt (J.C.-F.); allima@fc... Pole of University of Porto, 4169-007 Porto, Portugal Correspondence: martin.koehler@beak.de Abstract:...1200 km2 in the surroundings of Bajoca Mine (Northeast Portugal). Extensive knowledge about geological |  | | Journal (article/letter/editorial) | | 10 km NW of Khaybar. But occurrences are not of mine-able quality, as the supracrustal rocks of Baha...The amphibolite at some locations also exhibits actinolite development. These Baha Group metamorphic rocks...identified include sodic plagioclase, quartz, actinolite, epidote, aluminian titanite, and a clinopyroxene...surrounding metamorphic rocks; sporadic occurrence of actinolite, epidote, etc. points to a wider zone of Ca-metasomatism...other skarn deposits, such as the Riba de Alva W-skarn mine of Portugal (Gaspar and Inverno, 2000), where |  | Alaminia, Zohreh, Mehrabi, Behzad, Razavi, Seyed Mohammad Hossein, Tecce, Francesca (2020) Mineral chemistry, petrogenesis and evolution of the Ghorveh-Seranjic skarn, Northern Sanandaj Sirjan Zone, Iran. Mineralogy and Petrology, 114 (1) 15-38 doi:10.1007/s00710-019-00688-6 | Journal (article/letter/editorial) | | similar to those reported in amphiboles from Riba de Alva (Gasper and Inverno 2000) and Cantung E-zone...1978); Alaskan W skarns (Newberry et al. 1997); Riba de Alva scheelite skarn (Gaspar and Inverno 2000); d)...Qz + Cal + Chl ± Ves ±Ep Abbreviations: Act = actinolite, Aln = allanite, Amp = amphibole, An = anorthite...(2004) Skarn textures and a case study: the Ocna de Fier-Dognecea orefield, Banat, Romania. Ore Geol...strata-bound scheelite skarns in the Riba de Alva Mine, Northeastern Portugal. Econ Geol 95:1259–1275 Ghorbani |  | | Journal (article/letter/editorial) | | where there are mineral parageneses of andradite, actinolite, tremolite, epidote, quartz, magnetite, and hematite...Camiboğazı. The Fe skarn deposit contains an amount of mine waste covering an area of 5000 m2 but has no reserve...currently in production. Thus, the situ- ation of the mine has changed over time, and many parts of it are...magnetite, specular hematite, garnet, epidote, actinolite, and tremolite are found in the high-Ca limestone...magnetite, specular hematite, garnet, epidote, actinolite, tremolite, and quartz, whereas they are composed |  | Zhang, Weifeng, Chen, Huayong, Peng, Lianhong, Zhao, Liandang, Lu, Wanjian, Zhang, Zengjie, Yang, Juntao, Sun, Jie (2018) Ore genesis of the Duotoushan Fe-Cu deposit, Eastern Tianshan, NW China: Constraints from ore geology, mineral geochemistry, fluid inclusion and stable isotopes. Ore Geology Reviews, 100. 401-421 doi:10.1016/j.oregeorev.2017.02.021 | Journal (article/letter/editorial) | | assemblages. The secondary amphibole is dominantly actinolite. Pyrite, with minor chlorite-chalcopyrite veins...representative pyrite samples collected from underground mine workings and drill cores. Pyrite was hand-picked...type-b amphibole grains analyzed are dominantly actinolite, the type-a samples contain less FeOT (8.45 −...They plot in the ferro-hornblende, ferro-actinolite and actinolite fields (Fig. 9). Epidote is another major...identified in many skarn deposits (e.g., Empire Cu-Zn Mine, Chang and Meinert, 2008; Coroccohuayco deposit |  | Tornos, F., Galindo, C., Crespo, J. L., Spiro, B. F. (2008) GEOCHEMISTRY AND ORIGIN OF CALCIC TUNGSTEN-BEARING SKARNS, LOS SANTOS, CENTRAL IBERIAN ZONE, SPAIN. The Canadian Mineralogist, 46 (1) 87-109 doi:10.3749/canmin.46.1.87 | Journal (article/letter/editorial) | | y Minero de España, c/Azafranal 48, E–37001 Salamanca, Spain Carmen GALINDO Departmento de Petrología...Petrología y Geoquímica, Universidad Complutense de Madrid, E–28040 Madrid, Spain José Luis CRESPO SIEMCALSA...System, Los Santos deposit, Spain. Sommaire La skarn de Los Santos, mésozonale, calcique et réductrice, affleurant...la Zone Ibérique Centrale, constitue un gisement de tungstène à tonnage limité mais à teneur élevée se...valeurs de d18O du grenat et du clinopyroxène dans la skarn prograde indiqueraient des valeurs d18O de la |  | | Book | | approximately 5 cm taii and is from the Eagle's Nest mine, Piacer County, California. Ross Beaty Collection...parties de ses publicatJOnS pour let..- usage interne au person,el. ou rosage inteme ou personnel de cllenls...obtenu prealablemt.'fll une ltcanca it eel effet de CANCOPY (Canadian Copyright LJcenstng Agency), One...reprodudion pour fins de cistrhrtion ~ . de publicite ou de promotion, pcl.lr la confed.10n de nouveaux travaux...c:oleciifs ou par la revede cette nature, on doit au prealable convenir d'en-tentes |  | | Journal (article/letter/editorial) | | = Sn–W). Mineral Chemical composition Line Actinolite Aegerine Aeschynite Akaganeite Alabandite Albite...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...and/or altered mafic volcanic rock. Chlorite, actinolite and epidote give the green color. Duricrusts...you look for a mine look near a mine”. This includes the imperative “if you look for a mine look for smelting...also for the chrome diopside found at Outukumpu mine, a mineral that is first and foremost recognized | | | Journal (article/letter/editorial) | | = Sn–W). Mineral Chemical composition Line Actinolite Aegerine Aeschynite Akaganeite Alabandite Albite...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...and/or altered mafic volcanic rock. Chlorite, actinolite and epidote give the green color. Duricrusts...you look for a mine look near a mine”. This includes the imperative “if you look for a mine look for smelting...also for the chrome diopside found at Outukumpu mine, a mineral that is first and foremost recognized |
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