 | Markowski, Agnès, Vallance, Jean, Chiaradia, Massimo, Fontboté, Lluìs (2006) Mineral zoning and gold occurrence in the Fortuna skarn mine, Nambija district, Ecuador. Mineralium Deposita, 41 (4) 301-321 doi:10.1007/s00126-006-0062-x | Journal (article/letter/editorial) | | gold occurrence in the Fortuna skarn mine, Nambija district, Ecuador Received: 24 February 2005 / Accepted:...gold skarn deposit is located in the northern part of the Nambija gold district, southern Ecuador. It has...which are named from north to south: Cuerpo 3, Mine 1, Mine 2, and Southern Sector. Massive skarn bodies...intrusion which crops out below the skarn bodies in Mine 2 and the Southern Sector. Endoskarn alteration...zone is centered on two 060° trending faults in Mine 2, where the highest gold grades (5–10 g/t) were |  | | Report (issue) | | 11 The metamorphic belts of Ecuador The metamorphic belts of Ecuador CQVer photograph Cerro Hermoso... OVERSEAS MEMOIR 11 The metamorphic belts of Ecuador M Litherland,] A Aspden and RAJemielita Keyworth...andjf.MIEl,ITA, RA. )994. The metamorphic belts of Ecuador. Overseas Memofr of the British Geologi-cal Survey...Hu1nan aspect 3 Access 3 Previous geological work 3 Mining history 4 Project operations 5 Reports and maps...7 Andean metallogenesis 9 Metamorphic rocks of Ecuador l0 Stratigraphical nomenclature 10 Metamorphic |  | | Report (volume) | | color shaded relief aeromagnetic map of north-central Minnesota. Color changes represent broad changes...Tertiary calderas and regional extension of the east-central part of the Tintic-Deep Creek mineral belt, eastern...hydrothermal fluids in the Catheart Mountain Cu-Mo deposit, Maine By Robert A. Ayuso and Nora K. Foley......Structure and origin of the Ely copper deposit, east-central Vermont By Terry W. Offield, John F. Slack...geology and mineral deposits of the Berenguela district, northwestern Bolivia By Alan R. Wallace, Richard |  | | Journal (article/letter/editorial) | | K)-FELDSPAR AND CYMRITE FROM SEDEX BARITE DEPOSITS OF ZAMORA, SPAIN MARIA CANDELAS MORO§, MARIA LUISA CEMBRANOS§...from 0.15 to 0.40 m in three barite deposits in Zamora, Spain. The (Ba,K)-feldspars, which include celsian...that affected Paleozoic sedex barite deposits of Zamora. Fluid-inclusion studies indicate 350°–370°C and...hydrothermal activity, low-grade metamorphism, Zamora Province, Spain. SOMMAIRE Des compositions de feldspath...épaisseur dans trois gisements de barite dans la province de Zamora, en Espagne. Les feldspaths de (Ba,K), qui |  | | Report (volume) | | Introduction 1 Acknowledgments 1 Data 2 Geology 6 General deposit definition 6 Associated deposits 7 Tectonostratigraphic...Schematic cross sections of Au-skarn deposits in north-central Nevada 8 Map showing distribution of Au-skarn districts...complexly zoned garnets from oxidized skarn, Surprise Mine, Nevada 16 Ternary diagrams showing ranges of garnet...samples from five Au-bearing skarn systems in north-central Nevada 16 Ternary diagrams showing ranges of pyroxene...samples from three Au-bearing skarn systems in north-central Nevada 17 Photomicrograph showing massive garnet |  | Wafforn, S., Seman, S., Kyle, J. R., Stockli, D., Leys, C., Sonbait, D., Cloos, M. (2018) ANDRADITE GARNET U-Pb GEOCHRONOLOGY OF THE BIG GOSSAN SKARN, ERTSBERG-GRASBERG MINING DISTRICT, INDONESIA. Economic Geology, 113 (3) 769-778 doi:10.5382/econgeo.2018.4569 | Journal (article/letter/editorial) | | COMMUNICATIONS ANDRADITE GARNET U-Pb GEOCHRONOLOGY OF THE BIG GOSSAN SKARN, ERTSBERG-GRASBERG MINING DISTRICT, INDONESIA...located in the prolific Ertsberg-Grasberg mining district, on the island of New Guinea in eastern Indonesia...western edge of the 3.1 to 2.8 Ma Ertsberg diorite. Andradite garnets from eight Big Gossan samples were directly...the Big Gossan garnets. Andradite garnet U-Pb ages are compatible with district-wide zircon U-Pb geochronology...events in the Ertsberg-Grasberg district. This study demonstrates that andradite garnet U-Pb chronometry can |  | 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) | | Manuscript Ore genesis of the Duotoushan Fe-Cu deposit, Eastern Tianshan, NW China: Constraints from ore...Yang, J. Sun, Ore genesis of the Duotoushan Fe-Cu deposit, Eastern Tianshan, NW China: Constraints from ore...pertain. Ore genesis of the Duotoushan Fe-Cu deposit, Eastern Tianshan, NW China: Constraints from ore...*Corresponding Author Abstract The Duotoushan Fe-Cu deposit is located in the western segment of the Aqishan-Yamansu...massive magnetite precipitation at the Duotoushan deposit, whereas increasing pH values, decreasing temperature |  | Canet, Carles, González-Partida, Eduardo, Camprubí, Antoni, Castro-Mora, Jesús, Romero, Francisco Martín, Prol-Ledesma, Rosa María, Linares, Carlos, Romero-Guadarrama, Juan A., Sánchez-Vargas, Lilia I. (2011) The Zn–Pb–Ag skarns of Zacatepec, Northeastern Oaxaca, Mexico: A study of mineral assemblages and ore-forming fluids. Ore Geology Reviews, 39 (4) 277-290 doi:10.1016/j.oregeorev.2011.03.007 | Journal (article/letter/editorial) | | sulfosalts Calc-silicates Fluid inclusions Sierra Madre del Sur a b s t r a c t The Zn–Pb–Ag skarns of Zacatepec...Zacatepec are located in the eastern Sierra Madre del Sur, southern Mexico. They are hosted by the Cuicateco...Zacatepec are located in the eastern Sierra Madre del Sur, about 80 km northeast of the city of Oaxaca...so-called Mixe District, an area where mining has not enjoyed a long tradition as in central and northern...population (Díaz, 2007). Besides sporadic artisanal mining, which probably begun in pre-Hispanic times, a |  | | Book | | Spanish-English, English-Spanish glossary of gem, mineral and mining terms. BY PAUL WILLARD JOHNSON Price $2.00 r...El Antimonio District Cananea District ...... Arizpe District ........... Nacozari District ...... Moctezuma...Moctezuma District ... Hermosillo District ... Alamos District ........ San Bernardo Area Alistos District...45 Sabinal District ............... Los Lamentos District.... Placer de Guadalupe Puerto del Aire District...Eulalia District....... El Potosi Mine............. San Antonio Mine....... Cusihuiriachic District..... |  | Mathur, R., Marschik, R., Ruiz, J., Munizaga, F., Leveille, R. A., Martin, W. (2002) Age of Mineralization of the Candelaria Fe Oxide Cu-Au Deposit and the Origin of the Chilean Iron Belt, Based on Re-Os Isotopes. Economic Geology, 97 (1) 59-71 doi:10.2113/gsecongeo.97.1.59 | Journal (article/letter/editorial) | | Mineralization of the Candelaria Fe Oxide Cu-Au Deposit and the Origin of the Chilean Iron Belt, Based...Department of Mineralogy, Freiberg University of Mining and Technology, Freiberg, Germany JOAQUIN RUIZ...initial 187Os/188Os ratio for sulfide from Bronce mine, a small satellite of the Candelaria orebody, is...could be the source of metals in the Candelaria district. These data are consistent with the existence...Magnetite from the Manto Verde iron oxide Cu-Au deposit has Os and Re concentrations of 11 to 17 parts |  | | Journal (article/letter/editorial) | | CIMAR, Facultad de Ingeniería, Universidad Nacional del Comahue 8300, Neuquén, Argentina LAWRENCE D. MEINERT...of northwest Neuquén, Argentina, the Caicayén district shares the following features with Cu skarn-porphyry...skarn-porphyry copper deposits in other parts of South, Central, and North America, as well as Asia and the South...Introduction THE NORTH-CENTRAL ANDES of Chile is a well-known porphyry copper province with many large deposits...and mineralization. One example is the Caicayén district, in northwest Neuquén state (Fig. 1), where skarn |  | Sepidbar, Fatemeh, Mirnejad, Hassan, Li, Jian-Wei, Ma, Changqian (2017) Mineral and stable isotope compositions, phase equilibria and 40Ar–39Ar geochronology from the iron skarn deposit in Sangan, northeastern Iran. Ore Geology Reviews, 91. 660-681 doi:10.1016/j.oregeorev.2017.08.029 | Journal (article/letter/editorial) | | and 40Ar– 39Ar geochronology from the iron skarn deposit in Sangan, northeastern Iran Fatemeh Sepidbar,...and 40Ar– 39Ar geochronology from the iron skarn deposit in Sangan, northeastern Iran, Ore Geology Reviews...and 40Ar– 39Ar geochronology from the iron skarn deposit in Sangan, northeastern Iran Fatemeh Sepidbara...+98–21–61112959 Abstract The Sangan iron skarn deposit is located on the eastern edge of the Sabzevar-Doruneh...Keywords: S–O isotope, 40Ar-39Ar dating, iron skarn deposit, Sangan, Iran 1. Introduction Skarn deposits |  | Du, Li‐Juan, Li, Bo, Huang, Zhi‐Long, Chen, Jun, Zhou, Jia‐Xi, Zou, Guo‐Fu, Yan, Zai‐Fei (2020) Mineralogy, Fluid Inclusion, and Hydrogen and Oxygen Isotope Studies of the Intrusion‐Related Yangla Cu Deposit in the Sanjiang Region, SW China: Implications for Metallogenesis and Deposit Type. Resource Geology, 70 (1) 28-49 doi:10.1111/rge.12215 | Journal (article/letter/editorial) | | Yangla Cu Deposit in the Sanjiang Region, SW China: Implications for Metallogenesis and Deposit Type Li-Juan...Guizhou University, 2State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese...Kunming, China Abstract The Yangla deposit is an intrusion-related Cu deposit in the Jinshajiang tectonic belt...extensive studies that have been conducted on this deposit, the relationship between the granitic magma and...I), with the garnet and pyroxene dominated by andradite and diopside, respectively; (ii) syn-ore retrograde |  | | Report (issue) | | SURVEY CIRCULAR 1062 .r • San jose tin~silver mine at Oruro, Bolivia, where high-grade ores are hosted...-Soviet research on mineral deposits in the Noril'sk district is underway. Seventh Annual V.E. McKelvey Forum...represents an important center for the United States mining industry. Such an environment should enhance the...and exploration guides for a variety of mineral deposit types. Topics include discussion of significant...completed or in progress in Canada, Mexico, Venezuela, Ecuador, Bolivia, Peru, Chile, Argentina, Saudi Arabia |  | | Show/Event (guide) | | Training "A Tale of Two Mine Dumps.The Artisanal Gem Miners" North Star Mine, Mammoth, By Robert Weldon...Weldon Tintic District, J u a b 1:00 pm - 2:00 pm (MMR) County, Utah." By Brent Thorne Saturday, February...the Atwood Hill Herwig Pelckmans Area, Lordsburg District, 3:00 pm - 4:00 pm (MMR) 11:00 am—12:00 noon (GMR)...pm (MMR) Society of Mineral Museum World Class Deposit "Gemmology in the Emerald Professionals Program:...Meeting Rooms 2:00 pm - 3:00 pm (GMR) "The Red Cloud Mine — 9:30 am - 10:00 am (MMR) Arizona's World-Renowned |  | | Journal (article/letter/editorial) | | rocksformlarge-scale inliersthatprotrude from the central McArthur basin to the southern limits of through...Eastern fold belt (Fig. 1), have occurred following province. The mainoredeposits occurin rocksof restricted...he metallogeny of thatminerals McArthur basin province. In particular, thepapersareintended to highlight...oflatePaleoproterozoic basins forming theeastern part Zn-Pb-Ag deposit in a localized pyritic of what hasbeen termed the...theMcArthur River-Mount Isa-Cloncurry Region Resource 1 Deposit Mt Cu (%) Zn Ag Au Pb (%) (g/t) (g/t) (%) HYC |  | Soloviev, Serguei G., Kryazhev, Sergey G., Dvurechenskaya, Svetlana S., Uyutov, Victor I. (2019) Geology, mineralization, fluid inclusion, and stable isotope characteristics of the Sinyukhinskoe Cu-Au skarn deposit, Russian Altai, SW Siberia. Ore Geology Reviews, 112. 103039 doi:10.1016/j.oregeorev.2019.103039 | Journal (article/letter/editorial) | | characteristics of the Sinyukhinskoe Cu-Au skarn deposit, Russian Altai, SW Siberia Serguei G. Soloviev...characteristics of the Sinyukhinskoe Cu-Au skarn deposit, Russian Altai, SW Siberia, Ore Geology Reviews...characteristics of the PR O O Sinyukhinskoe Cu-Au skarn deposit, Russian Altai, SW Siberia E- Serguei G. Soloviev*...35 Staromonetny Per., Moscow 109017, Russia ** Central Research Institute of Geological Prospecting for...serguei07@hotmail.com JOURNAL PRE-PROOF The Sinyukhinskoe deposit (>100 t Au with average 9.2 g/t Au) is situated |  | | Journal (article/letter/editorial) | | the Jálama batholith in the Navasfrı́as Sn-W District, Salamanca, Spain T. LLORENS* AND M. C. MORO...melts migrated through fractures to form the Cruz del Rayo field of pegmatite dykes, which are hosted by...the Cruz del Rayo pegmatites, which are hosted by metamorphic rocks, were collected from the mine dumps...workings and the restoration of the areas affected by mining. Of the 54 samples containing phosphate minerals...for Mg; corundum for Al; MnTiO3 for Mn and Ti; andradite for Fe; vanadinite for Cl; albite for Na; LaF3 |  | | Book | | Arqueología, Antropología e Historia del Perú, Museo de Oro and Museo Andrés del Castillo in Lima, and Museo Tumbas...Huari and Tiahuanaco cultures, which occupied the central highlands in 500-900 A.D. This jewelry must have...sediments showed that the famous Cerro Rico de Potosí deposit in Bolivia, one of the world 's richest silver...Sicán period, 59 x 31 cm. © Museos "Oro del Perú" "Armas del Mundo". Fundación Miguel Mujica Gallo, Lima...high mountains near Coquimbo in Chile, but the deposit has been known for justa few decades (see next |  | | Report (issue) | | cm tall andradite on hematite is from the Wessels Mine near Hotazel in northern Cape Province, South Africa...Cover: Grossular on diopside; 7.1 cm tall Jeffrey Mine, Asbestos, Richmond County, Quebec, Canada Paul...the color of some 50 percent of the green gem andradite (variety "demantoid") originating in Russia is...Inclusions BY MICKEY E. GUNTER 34 Classic Garnets: Andradite BY JOACHIM ZANG 38 Above: Childeric 's bees...members). Of these fifteen species, six almandine, andradite, grossular, pyrope, spessartine, and uvarovite-are |  | Shu, Q., Lai, Y., Sun, Y., Wang, C., Meng, S. (2013) Ore Genesis and Hydrothermal Evolution of the Baiyinnuo'er Zinc-Lead Skarn Deposit, Northeast China: Evidence from Isotopes (S, Pb) and Fluid Inclusions. Economic Geology, 108 (4) 835-860 doi:10.2113/econgeo.108.4.835 | Journal (article/letter/editorial) | | Evolution of the Baiyinnuo’er Zinc-Lead Skarn Deposit, Northeast China: Evidence from Isotopes (S, Pb)...100871, China Abstract The Baiyinnuo’er zinc-lead deposit (32.74 Mt at 5.44% Zn, 2.02% Pb, and 31.36 g/t...the Great Xing’an Range, is the largest Zn-Pb deposit in northern China. Skarn and orebodies mainly occur...Several phases of igneous rocks exposed within the mining areas, and among them the Yanshanian plutonic rocks...microthermometric results at the Baiyinnuo’er Zn-Pb deposit: 1. Immiscibility: Preore-stage coexistence of |  | Xue, Liwei, Wang, Gongwen, Tang, Li, Cao, Yi, Du, Jingguo, Du, Yangsong, Luo, Liping, Cheng, Hongtao (2021) Genesis and hydrothermal evolution of the Zhazigou skarn W (Mo) deposit, East Qinling, China: Constraints from fluid inclusions and H–O–S–Pb isotopes. Ore Geology Reviews, 138. 104374pp. doi:10.1016/j.oregeorev.2021.104374 | Journal (article/letter/editorial) | | hydrothermal evolution of the Zhazigou skarn W (Mo) deposit, East Qinling, China: Constraints from fluid inclusions...Geological Sciences, Chengdu 100088, China d Xinbao Mining Limited Company, Luanchuan 471500, China b A R...W (Mo) deposit East Qinling The Zhazigou is a typical redox-intermediate skarn W (Mo) deposit, located...located in the Luanchuan ore district within the East Qinling orogenic belt, central China. Skarn and W (Mo)...indicate that the ore-forming fluids at the Zhazigou deposit have a dominantly magmatic water signature, with |  | Siesgesmund, Siegfried, López-Doncel, Rubén, Sieck, Pascal, Wilke, Hendrik, Wemmer, Klaus, Frei, Dirk, Oriolo, Sebastián (2018) Geochronological and geochemical constraints on the genesis of Cu-Au skarn deposits of the Santa María de la Paz district (Sierra del Fraile, Mexico) Ore Geology Reviews, 94. 310-325 doi:10.1016/j.oregeorev.2018.02.010 | Journal (article/letter/editorial) | | skarn deposits of the Santa María de la Paz district (Sierra del Fraile, Mexico) Siegfried Siesgesmund, Rubén...skarn deposits of the Santa María de la Paz district (Sierra del Fraile, Mexico), Ore Geology Reviews (2018)...skarn deposits of the Santa María de la Paz district (Sierra del Fraile, Mexico) Siegfried Siesgesmund1,...deposits of the mining district of Santa María de La Paz are located in the Sierra del Fraile, in the...Pyroxene and garnet show dominant hedenbergite and andradite compositions, respectively. The association of |  | Zhang, Ju-Quan, Li, Sheng-Rong, Santosh, M., Wang, Ji-Zhong, Li, Qing (2015) Mineral chemistry of high-Mg diorites and skarn in the Han-Xing Iron deposits of South Taihang Mountains, China: Constraints on mineralization process. Ore Geology Reviews, 64. 200-214 doi:10.1016/j.oregeorev.2014.07.007 | Journal (article/letter/editorial) | | 136 Huaiandong Road, Shijiazhuang 050031, Hebei Province, China a r t i c l e i n f o Article history:...High-Mg diorite Amphibole thermobarometer Skarn iron deposit a b s t r a c t The Han-Xing region is located...located in the south Taihang Mountains (TM) in the central part of the North China Craton, and is an important...logfO2, Fe3+ rich ore-forming fluid generated andradite and clinopyroxene when it reacted with limestone...Mountains (TM) in the central North China Craton, and is a wellknown iron province containing numerous |  | | Report (issue) | | Mining and Metallurgy in Ancient Perú A translation of Minería y Metalurgia en el Antiguo Perú Arqueológicas...[Minería y metalurgia en el antiguo Perú. English] Mining and metallurgy in ancient Perú / by Georg Petersen...mosaic of pyrite, turquoise, and shell, from the central or southern coastal area of Perú, Coastal Tiahuanaco... Contents Introduction to the English translation of Mining and Metallurgy in Ancient Perú . . . . . . . .... . . . . . . . . . . . . . . . . . . . . . xvi Mining and Metallurgy in Ancient Perú Prologue . . . |
|
Central Mine, Sultana del Cóndor deposit, Nambija mining district, Zamora Canton, Zamora-Chinchipe Province, Ecuador