 | | Journal (article/letter/editorial) | | 1988 Chemical Zoning in Wolframite from San Cristobal, Peru A. Campbell 1 and U. Petersen Department...Abstract. Fifty wolframite crystals from San Cristobal (Peru) were analysed with the electron microprobe...wolframite compositions measured is from 28 to 97 mol% ferberite (FeWO4). Although a range of 59 tool% was determined...average compositions in the range of 84-92 tool% ferberite have relatively small compositional variations...section of the Main Vein of San Cristobal it appears that the low ferberite values correspond spatially |  | | Journal (issue) | | TSKnerals of i'eru ! Indian miner, Cerro de Pasco, Peru, 1869 (Simonin, 1869). J3E(mes and J3E(merals...crystal group, 7 cm, from the Huanzala mine, Dos de Mayo Province, Peru. Marty Zinn collection; Jeff Scovil............................... History of Peru Mining in Peru The Mineral Specimen Business C o l l e c....................... Quiruvilca district, Santiago de Chuco province, department of La Libertad PASTO.......................... Pasto Bueno district, Pallasca province, department of Ancash R a u r a -H u |  | | Journal (article/letter/editorial) | | Baia Sprie Au-Ag-PbZn-Cu-W ore deposit (Baia Mare district, Romania) have been investigated using electron...nearly pure huebnerite (MnWO4) core to nearly pure ferberite (FeWO4) rims. This zonation correlates with a...from Victorio Mountains, New Mexico, and San Cristobal, Peru (Campbell and Robinson-Cook, 1987); Panasqueira...Indio, Chile (Siddeley and Araneda, 1986); Julcani, Peru (Deen et al., 1994), and Cripple Creek, Colorado...on Baia Sprie mineral deposit in the Baia Mare district, Romania; it is one of Europeâs major gold-polymetallic |  | | Journal (article/letter/editorial) | | Metallogenetic Epochs and Provinces of Bolivia The Tin-Province (Part I) The Metallogenetic Provinces of the Altiplano...formation of ore deposits using the Bolivian tin-province as an example. In the eastern Cordillera we are...old geotectonic zone of weakness divides the tin district into two parts which differ from each other in...tin-silver mineralization is discussed. Within the tin-province three metallogenic epochs are recognized, with...down-faulted and consequently preserved. The polymetallic province of the Altiplano contains subvolcanic ore deposits |  | Ortelli, M., Kouzmanov, K., Wälle, M., Ubrig, N., Casanova, V. (2018) Fluid Inclusion Studies in Opaque Ore Minerals: I. Trace Element Content and Physical Properties of Ore Minerals Controlling Textural Features in Transmitted Near-Infrared Light Microscopy. Economic Geology, 113 (8) 1845-1860 doi:10.5382/econgeo.2018.4615 | Journal (article/letter/editorial) | | V O T Mining district Ore deposit type Analyses San Cristobal (Peru) San Cristobal (Peru) Morococha...Morococha (Peru) Morococha (Peru) Butte (USA) Butte (USA) Butte (USA) Butte (USA) Butte (USA) Butte (USA) Butte...GRL-2810, GRL-5526, BUKK01), San Cristobal (Peru; sample FPE-4), and Morococha (Peru; sample TO-106) districtsâ...pyrite generations were selected from the Butte district (USA)âthe first one occurs as rounded grains intergrown...respectively. The pyrite sample from the Morococha district, Peru (sample TO-106), is from a polymetallic base |  | | Journal (article/letter/editorial) | | Cu-Zn-Pb-(Au-Ag) Mineralization in the Colquijirca District, Central Peru: Deposit-Scale Mineralogical Patterns RONNER...AND LLUĂS FONTBOTĂ2 1Bilbao 2Sciences 295, Lima, Peru de la Terre et de lâenvironnement, UniversitĂŠ de...Genève, Switzerland Abstract At Colquijirca, central Peru, a Miocene diatreme-dome complex is associated in...Colquijirca, located in the northern sector of the district, are part of a continuously mineralized northsouth... pyrite, colusite, tennantite, goldfieldite, ferberite, gold-silver tellurides, bismuthinite, gold, alunite |  | | Journal (article/letter/editorial) | | Cu-Zn-Pb-(Au-Ag) Mineralization in the Colquijirca District, Central Peru: Deposit-Scale Mineralogical Patterns RONNER...AND LLUĂS FONTBOTĂ2 1Bilbao 2Sciences 295, Lima, Peru de la Terre et de lâenvironnement, UniversitĂŠ de...Genève, Switzerland Abstract At Colquijirca, central Peru, a Miocene diatreme-dome complex is associated in...Colquijirca, located in the northern sector of the district, are part of a continuously mineralized northsouth... pyrite, colusite, tennantite, goldfieldite, ferberite, gold-silver tellurides, bismuthinite, gold, alunite |  | | Journal (article/letter/editorial) | | association with wolframite. The end-members, the Ferberite ( x = l ; opaque black) and the Huebnerite ( x...5 SC 3 VG-6A Synthetic Panasqueira San Cristobal San Cristobal Vale das Gatas 1.00 0.91 0.91 0.86 0...to the Ferberite and Huebnerite magnetic structures. However. for x>0.35, only the Ferberite magnetic...observed. The magnetic transition temperature of the Ferberite (FeWO~) and the Huebnerite (MnWO4) have been calculated...wolframites of different origins and on a synthetic Ferberite m [ WOLFRAMITE I !! ti i was Fig. 2. M6ssbauer |  | | Report (issue) | | ophyllite; 5. 2 cm tall Cerro Rico, Potosi, B,atillo province, Potosi Andy Seibel col/action Jejf-SC,m/.plwto...wp11ďż˝. Yaalte: 12.5 cm wide Siglo XX Mine, ,Uďż˝ Bustillo province, Potosi Malty Zinn colkdknt (ex Marv............................ 4 BY ALFREDO PETROV Mining, Politics, and Tumult: A Brief Look at Bolivian...BY JAROSLAV HYRSL AND ALFREDO PETROV The Poopo District ................................................Minerals from the San Jose and Itos Mines in Oruro ... 26 BY ROBERT B. COOK The Morococala Mine .......... |  | | Journal (article/letter/editorial) | | The end-members of the wolframite series, the ferberite FeWO4 ( x = l ) ; opaque black) and the huebnerite...1966; Tdlku 1967). They correspond to (i) the ferberite magnetic structure (FeWO4-type structure) where...and W ions (Ulku 1967). b Magnetic unit cell of ferberite (Ulk/i 1967). c Projection in the (a, b) plane... The magnetic transition temperatures of the ferberite (FeWO4) and the huebnerite (MnWO4) have been calculated...(Panasqueira, Vale des Gatas, Borralha) and Peru (San Cristobal). In order to avoid the presence of foreign |  | Dewaele, S., De Clercq, F., Hulsbosch, N., Piessens, K., Boyce, A., Burgess, R., Muchez, Ph. (2016) Genesis of the vein-type tungsten mineralization at Nyakabingo (Rwanda) in the KaragweâAnkole belt, Central Africa. Mineralium Deposita, 51 (2) 283-307 doi:10.1007/s00126-015-0608-x | Journal (article/letter/editorial) | | wolframite, while the second phase is formed by ferberite pseudomorphs after scheelite. These minerals occur...Kibara belt together host a large metallogenic province that contains numerous graniterelated ore deposits...2013). In addition, the majority of the historical mining activities focused on Sn and NbâTa deposits, while...Bugarama) have been exploited both by open-pit mining and by underground workings since the 1930s and...microthermometric studies of fluid inclusions at the Nyakabingo mine, the present study aims to determine the formation |  | | Catalog/List | | Design District Showroom 1518 Slocum Street ⢠Dallas, TX 75207 Heritage Auctions Design District Showroom...Assistant Director Alissa Ford Managing Director San Francisco Roberta Kramer Managing Director Chicago...extremely ine, specimens from the Mammoth-St. Anthony Mine of Tiger, Arizona: now a vanished place alive only...âgoodies,â as Rock would say, as they came out. Mining projects that Rock was a part of, often yielded...potential mineral buying area, or go into another mine. He travelled to areas that had seen few Americans |  | PaÄevski, Aleksandar, GĂśtzinger, Michael, DimitrijeviÄ, Radovan, CvetkoviÄ, Ljubomir (2007) Oscillatory zoning in wolframite from Osanica, near Bor, Serbia. Neues Jahrbuch fĂźr Mineralogie - Abhandlungen, 184 (2) 151-160 doi:10.1127/0077-7757/2007/0092 | Journal (article/letter/editorial) | | solution between end members huebnerite (MnWO4) and ferberite (FeWO4) and shows a wide variety of its chemical...reported that a sample of wolframite from San Cristobal (Peru) contains two crystals with contrasting zoning:...conditions of the formation of the huebnerite-ferberite crystals were insufficiently known. Oscillatory...were found in the Pilaf Tepe deposit, Vertikos district, Greece (JankovicĚ 1979) and near Fojnica, Mid-Bosnian...dumps of earlier minings. Comprehensive earlier mining investigations were performed by the Geozavod company |  | | Journal (article/letter/editorial) | | Granitoid Environments: I. Relative Solubilities of Ferberite and Scheelite as a Function of T, P, pH, and mNaCl...Experimentally derived thermodynamic data for scheelite, ferberite, aqueous Ca, Fe, and W species, and other required...The simultaneous solubilities of scheelite and ferberite in NaCl-HCl-H2O solutions were calculated at temperatures...following: (1) solubilities of scheelite and/or ferberite can attain values as high as hundreds to thousands...concentration in equilibrium with scheelite and ferberite increases strongly with increasing temperature |  | | Journal (issue) | | .......................... 12 3 Lake City Mining District, Colorado. By David Seaman ........... 124...By RONALD L. IVES Since the early days of placer mining mation is pre-Cambrian, with three, in Colorado...production 110tll, during the war, more Hubnerite, Ferberite, Wolfrnmite and than 2,000 tons of concentrate..., Nederland almost joined the ranks of wi th Ferberite containing mostly tung"Ghost Towns." From 1928...tungsten area is located in the remainder FeWO, .... Ferberite hlgh country of Boulder County, Color20-80 % Mn |  | | Journal (issue) | | Articles Famous mineral localities: The Bristol copper mine, Connecticut......................................in the U.S.A. notesfrom th r EDITORS OLD YUMA MINE Another great mineral locality has now been closed...longfamous Old Yuma mine near Tucson (see R. L. Jones, âFamous mineral localities: the Old Yuma mine,â in vol....owned by Richard Bideauxâs Arizona Exploring and Mining Company for quite a few years. Bideaux and Wayne...period of activity, access to the mine was cut off in 1984. In 1996 the mine area was absorbed into the Saguaro |  | | Report (issue) | | category ........ Estimated cumulative and annual mine production of tungsten contained in ore and concentrateâ...For each country having a tungsten deposit or district listed in the ISMI tungsten inventory...........districts in the R1 and R2 categories, listed by mining method and economic class of country.............also recovered from placer deposits. Most current mine production of tungsten is from vein/ stockwork,...accounted for over three-fourths of the worldâs mine production of tungsten. China alone produced about |  | | Journal (article/letter/editorial) | | solid-solution series between hĂźbnerite (MnWO4) and ferberite (FeWO4), is the main tungsten-bearing ore mineral...results indicate that solubilities of hĂźbnerite and ferberite in hydrothermal fluids at typical W-mineralizing...precipitating hĂźbnerite and ferberite from acidic hydrothermal fluids. HĂźbnerite and ferberite are also significantly...mineralizing fluids. This may be one of reasons why ferberite is more common than hĂźbnerite in tungsten deposits...stage. Keywords: tungsten deposits; wolframite; ferberite; hĂźbnerite; thermodynamic model 1. Introduction |  | | Journal (article/letter/editorial) | | Panasqueirain Portugaland PastoBueno and San Cristobalin Peru, there are importantdifferences.The ore...structuralfea- south traverse through the Chicote mine showsa ture is parallelto the regionaltrend andhasbeen...ANDISOTOPE STUDIES, CHICOTE 7101 64ow 1 100 200 i i PERU (;/.1â˘â˘ 63 areasof obvioushydrothermalalterationto..._ATERECENT .... RUT[LE CR : -- ARSENOPYRITE FERBERITE C PYRRHOT[TE A Cu-Sn-fe SULPHIDE R Ă .....1,000 barsmay have occurred.A temperaturecor- Ferberite depositionis consideredto have occurred rectionof |  | Zheng, Zhen, Chen, Yan-Jing, Deng, Xiao-Hua, Yue, Su-Wei, Chen, Hong-Jin, Wang, Qing-Fei (2018) Fluid evolution of the Qiman Tagh W-Sn ore belt, East Kunlun Orogen, NW China. Ore Geology Reviews, 95. 280-291 doi:10.1016/j.oregeorev.2018.03.002 | Journal (article/letter/editorial) | | wolframite and quartz is also observed at the San Cristobal deposit, Peru (Campbell and Robinson-Cook, 1987). Hence...1999). Tungstates precipitate from pH = 5.9 for ferberite, through 6.7 for huebnerite, to 7.3 for scheelite...genesis of tungsten-tin deposits in the Baiganhu district, northern Kunlun belt, Northwest China. Econ....of Kekekaerde W-Sn deposit in the Baiganhu W-Sn district. Ruoqiang County, Xinjiang (in Chinese). Jilin...of Bashierxi W-Sn deposit in the Baiganhu W-Sn district. Ruoqiang County, Xinjiang (in Chinese). Li, D |  | TorrĂł, , Cazorla, , Melgarejo, , CamprubĂ, , TarrĂŠs, , Gemmrich, , Campeny, , Artiaga, , Torres, , MartĂnez, , Mollinedo, , Alfonso, , Arce-Burgoa, (2019) Indium Mineralization in the Volcanic Dome-Hosted ĂnimasâChocayaâSiete Suyos Polymetallic Deposit, PotosĂ, Bolivia. Minerals, 9 (10) 604 doi:10.3390/min9100604 | Journal (article/letter/editorial) | | Catholic University of Peru (PUCP), Av. Universitaria 180, San Miguel, Lima 15088, Peru Departament de Mineralogia...Facultad de Ciencias GeolĂłgicas, Universidad Mayor San AndrĂŠs, Av. VillazĂłn N⌠1995, Plaza del BicentenarioâZona...Eloro Resources Ltd. Av. La Floresta 497, Of. 101, San Borja, Lima 15037, PerĂş. Received: 31 August 2019;...hosts the In-bearing ĂnimasâChocayaâSiete Suyos district in SW Bolivia. Ore mineralization occurs as banded...the Siete Suyos mine, the Ănimas, Burton, Colorada, and Rosario veins in the Ănimas mine and the Nueva |  | Ni, Pei, Li, Wen-Sheng, Pan, Jun-Yi, Cui, Jian-Ming, Zhang, Kai-Han, Gao, Yan (2022) Fluid Processes of Wolframite-Quartz Vein Systems: Progresses and Challenges. Minerals, 12 (2) 237 doi:10.3390/min12020237 | Journal (article/letter/editorial) | | intrusion from the Zhangtiantang-Xihuashan ore district, where an as-yet undiscovered deep intrusion,...scheelite skarn are not only that it is easier for mining, but also due to the specialty of wolframite, which...traced back to the Song Dynasty. However, the early mining activities were restricted to the utilization of...by-products of wolframite-quartz veins. Large-scale mining activities of wolframite-quartz veins began to...found in the Xihuashan tungsten deposit, and its mining and utilization officially took place in 1907. |  | | Journal (article/letter/editorial) | | southern China is a world- 12 class tungsten province. However, it is poorly understood why alteration...multisource geo-information in the Duolong 428 mineral districtâ (12120115102301). The numerical experiments were...2004. Fluid evolution in the WâCuâZnâPb San Cristobal vein, Peru: fluid inclusion and stable isotope evidence...hydrogen and oxygen isotope study of the San Cristobal Mine, Peru; implications of the role of water to...Dahutang tungsten polymetallic ore field, Jiangxi Province, China. Acta Geol. Sin., 89(3): 822-835. Gruber |  | | Journal (article/letter/editorial) | | Rift and a northeastern province covering Burundi, Rwanda, the West Lake district of Tanzania and southwest...southwest Uganda. The northeastern province is the main subject of this paper (Fig. 2 ). Since the discovery...northeastern Kibara belt (Pohl, 1987 ). Mines, mining districts and localities mentioned in the text:...Cumulative cassiterite production in the northeastern province, for example, may be estimated at approximately...for the countries concerned. At present, little mining at industrial scale takes place in the region for |  | | Report (issue) | | (WO3 %) 76.3 Specific gravity (g/cm3 ) 7.5 Ferberite FeWO4 Wolframite (Fe,Mn)WO4 76.5 7.1-7.5...isomorphous6 substances ferrous tungstate or ferberite (FeWO4), and manganous tungstate or hĂźbnerite...intermediate 20-80 per cent range between the ferberite and hĂźbnerite end-member compositions. Some basic...which is especially valuable in exploration and mining. The colour of the fluorescence light is influenced...number of major deposits in Canada, USA, Bolivia and Peru. In Western Europe the Variscan belt that arcs from |
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San Cristobal Mine, San Cristobal mining district, Yauli District, Yauli Province, JunĂn, Peru