 | | Journal (issue) | | localitĆ segreta, sconosciuta, ove manifestare tutta la sua esuberanza e trasmettere il suo buon umore. In...esprimo tutta la mia gratitudine e riconoscenza a chi come Lui ha profuso energie e passione per la nostra causa...molti nostri soci sentano verso la nostra Associazione, fondamentale per la coesione e lāarmonia di un gruppo...gruppo! Se cosƬ non ĆØ, la nostra frequentazione si risolve in una mera abitudine, una scusa per toglierci...e recarci al āgruppoā a fare quattro chiacchiere. La nostra passione nasce dallāinteresse, dalla curiositĆ |  | PĆ©ntek, Attila, MolnĆ”r, Ferenc, Tuba, Gyƶrgyi, Watkinson, David H., Jones, Peter C. (2013) The Significance of Partial Melting Processes in Hydrothermal Low Sulfide Cu-Ni-PGE Mineralization Within the Footwall of the Sudbury Igneous Complex, Ontario, Canada. Economic Geology, 108 (1) 59-78 doi:10.2113/econgeo.108.1.59 | Journal (article/letter/editorial) | | evaluation of this data was performed with the software Pepita by Dunkl et al. (2008). Six element PGE (Pt, Pd...by varying proportions of titanite, zircon, and apatite. Precious metal-bearing low-sulfide assemblages...the footwall breccia of the Epidote zone (Fraser mine). McCormick et al. (2002b) revealed chlorine geochemical...cavities, primary fluid inclusions). Abundant F-rich apatite (F/(F + Cl)= 0.80ā0.91) and amphibole (1.0 to 1...melts. As we have seen from the geochemistry of apatite and amphibole, fluorine appears to have played |  | Wolff, R., Dunkl, I., Kempe, U., Stockli, D., Wiedenbeck, M., von Eynatten, H. (2016) Variable helium diffusion characteristics in fluorite. Geochimica et Cosmochimica Acta, 188. 21-34 doi:10.1016/j.gca.2016.05.029 | Journal (article/letter/editorial) | | Late Cretaceous age close to the apatite fission track (AFT) and apatite (U-Th)/He ages (AHe) from the same...(U-Th-Sm)/He thermochronology of accessory minerals like apatite and zircon can provide excellent constraints on...Especially in some ore deposits (e.g. greisens) apatite is often rare or lacking due to the typically low... but such veins are often not well suited for apatite and zircon-based geochronology. The need to date...well-established thermochronometers such as apatite fission track and apatite (U-Th)/He (Wolff et al., 2015a ; Wolff |  | FISCHER, CORNELIUS, DUNKL, ISTVĆN, VON EYNATTEN, HILMAR, WIJBRANS, JAN R., GAUPP, REINHARD (2012) Products and timing of diagenetic processes in Upper Rotliegend sandstones from Bebertal (North German Basin, Parchim Formation, Flechtingen High, Germany) Geological Magazine, 149 (5) 827-840 doi:10.1017/s0016756811001087 | Journal (article/letter/editorial) | | Zircon (UāTh)/He ages (92 Ā± 12 Ma) as well as apatite fission-track ages (ā¼ 71ā 75 Ma) indicate the termination...(UāThāSm)/He thermochronology of detrital zircon and apatite. These data constrain both the maximum temperature...and magnetic separation processes to concentrate apatite and zircon minerals. Because the investigated Upper...Upper Rotliegend sandstones do not contain apatite, we also sampled structurally IP address: 193.0.65... After mounting and polishing, the zircon and apatite crystals were etched according to Gleadow, Hurford |  | | Journal (article/letter/editorial) | | Fe3+0.83)O3], goethite, ferrihydrite, quartz, and apatite. The Mn minerals are often intimately intergrown...typically have high incompatible contents (TiO2, La = 2.7-16.31 ppm, Rb > 6 ppm) and moderate LREE concentration...incompatible element ratios (Zr/Nb= 25-166; Y/Nb= 7-63; (La/Sm)N= 0.58-1.46) are similar to ānormalā or āenriched...degrees prior to kimberlite generation. The Zr/Nb vs La/Yb ratios of Kodamalli and Bhejripadar/Tokapal kimberlites...Kodamalli kimberlites have high Zr/Nb ratio and low La/Yb ratios. The plot of Ce/Yb vs Zr/Nb shows that |  | | Journal (issue) | | di mineralogia e paleontologia PUBBLICA on-line la Rivista āIL CERCAPIETREā COLLABORA con i Musei...ormai non piĆ¹ in forma cartacea, dallāaltro ci dĆ la certezza di guardare avanti nel modo piĆ¹ āmodernoā...archivi del GMR, fu dattiloscritto, probabilmente con la leggendaria Lettera 22, dal prof. Domenico Pagano...sistema a ciclostile, in un numero limitato di copie. La pubblicazione consisteva in quattro pagine che contengono...di cessare la pubblicazione in forma cartacea del Notiziario e adottare esclusivamente la forma on-line |  | | Journal (issue) | | della sua nave: deve condurla di porto in porto con la massima sicurezza. Non ci sono scuse se affonda....L'Associazione non puĆ² vivere, esprimersi e progredire senza la partecipazione attiva dei suoi soci. Per fortuna...orgoglio! La Mineralogia, la Paleontologia, la Petrografia, il mondo dei Micromounts, la Psammologia, la Collezione...Collezione, la Biblioteca, la Segreteria, la Didattica hanno guide sicure che sapranno esprimere al meglio...pertanto per la prossima uscita consegnare gli articoli entro e non oltre fine settembre 2008. La Redazione |  | Tunnell, Bolorchimeg N., Locmelis, Marek, Seeger, Cheryl, Mathur, Ryan, Dunkl, IstvĆ”n, Sullivan, Brandon, Lori, Lisa (2021) The Pilot Knob iron ore deposits in southeast Missouri, USA: A high-to-low temperature magmatic-hydrothermal continuum. Ore Geology Reviews, 131. 103973pp. doi:10.1016/j.oregeorev.2020.103973 | Journal (article/letter/editorial) | | iron formation Iron isotopes Critical minerals Apatite U-Pb geochronology The Mesoproterozoic St. Francois...remain controversial. We present new U-Pb data on apatite intergrown with massive magnetite in the PKM deposit...formation of the PKM deposit based on U-Pb dating of apatite and interpret the data with regards to ore-forming...N. Tunnell et al. including fluorite, topaz, apatite, spinel, allanite, monazite, titanite, zircon,...some blocks being accessible at the surface due to mine workings (Fig. 3A, B), is dominated by fine-grained |  | | Book | | Eulalia District....... El Potosi Mine............. San Antonio Mine....... Cusihuiriachic District................................. Minerals of Ojuela Mine .... . Velardena District.........................Guanajuato District ..................... El Sanlin Mine......................... San Miguel de Allende ...assistant superintendent, both of Fresnilloās Naica mine, helped with data and review. Dr. Edwin Roedder...made possible our visit to the Esperanza fluorite mine. Engineer Macario Munoz, Comision de Fomento Minero |  | | Journal (article/letter/editorial) | | Zircon multiāstage overgrowths, UāPb geochronology, LAāICPāMS INTRODUCTION Sri Lanka is a Precambrian terrain...samples abundant; common; occasional; Ć absent. Ap, apatite; Bt, biotite; Crd, cordierite; Grt, garnet; Ilm...Ablation Inductively Coupled Plasma Mass Spectrometry (LAāICPāMS), zircon grains were separated using heavy...original thickness. The LAāICPāMS analyses were carried out using an Agilent 7500 Series LAāICPāMS equipment...Ā± sillimanite + quartz + magnetite Ā± rutile Ā± apatite Ā± ilmenite. Garnet occurs as porphyroblasts, and |  | | Journal (article/letter/editorial) | | the U is mainly associated with the CFA crystals. LA-ICP-MS measurement shows that CFA contains 137-612...137-612 ppm U and 113-261 ppm total REE+Y. The LA-ICP-MS U-Pb age of the uppermost This is a 'preproof' accepted...analysis the REE enrichment is related to CFA and LA-ICP-MS measurements show that it contains 748-2953...about 30 percent P2O5 what is mostly found as apatite sensu lato. Most of the phosphorus (~80%) is exploited...sedimentary phosphate deposits and the igneous apatite deposits constitute a less significant source of |  | Topuz, GĆ¼ltekin, Candan, Osman, Okay, Aral I., von Quadt, Albrecht, Othman, Malik, Zack, Thomas, Wang, Jiamin (2020) Silurian anorogenic basic and acidic magmatism in Northwest Turkey: Implications for the opening of the Paleo-Tethys. Lithos, 356. 105302 doi:10.1016/j.lithos.2019.105302 | Journal (article/letter/editorial) | | biotite and Ā±muscovite. Accessory minerals are apatite and zircon. Secondary minerals are muscovite, calcite...Accessory minerals are Jo ur 39), zircon and apatite. Amounts of titanite, biotite and quartz are variable...ablation inductively coupled plasma mass spectrometry (LA-ICP- of MS) zircon dating has been performed on...microcline, plagioclase and sillimanite (Fig. 5e). Apatite, na zircon and monazite are accessory minerals...5f). Accessory minerals are ilmenite, zircon and apatite. The coarse foliation is defined by metamorphic |  | Sliwinski, J. T., Bachmann, O., Dungan, M. A., Huber, C., Deering, C. D., Lipman, P. W., Martin, L. H. J., Liebske, C. (2017) Rapid pre-eruptive thermal rejuvenation in a large silicic magma body: the case of the Masonic Park Tuff, Southern Rocky Mountain volcanic field, CO, USA. Contributions to Mineralogy and Petrology, 172 (5) doi:10.1007/s00410-017-1351-3 | Journal (article/letter/editorial) | | limited to the proximal periphery of the southern La Garita caldera, the source of the far more voluminous...in a zone adjacent to the southeast margin of the La Garita caldera, where lavas of Sheep Mountain Andesite...studies. For more detailed map, see Lipman (2006) La Garita caldera. Its original eruptive volume was...65 5.45 14.96 0.74 62.48 59 43 78 30 50 La Ce 930 160 10 1.8 850 176 14 935 900 720...as with a scanning electron microscope (Jeol 6390 LA) at ETHZ. Trace-element concentrations in plagioclase |  | Zack, Thomas, Stockli, Daniel F., Luvizotto, George L., Barth, Matthias G., Belousova, Elena, Wolfe, Melissa R., Hinton, Richard W. (2011) In situ UāPb rutile dating by LA-ICP-MS: 208Pb correction and prospects for geological applications. Contributions to Mineralogy and Petrology, 162 (3) 515-530 doi:10.1007/s00410-011-0609-4 | Journal (article/letter/editorial) | | 4 ORIGINAL PAPER In situ UāPb rutile dating by LA-ICP-MS: and prospects for geological applications...documents important analytical advances in in situ LA-ICP-MS U/Pb geochronology of rutile: (1) Matrix matching...controlled dating. Keywords Rutile Geochronology LA-ICP-MS SIMS TIMS Provenance studies Granulites...datingāā (U/Pb, fission track and U-Th/He; for apatite see Carrapa et al. 2009) on single grains is potentially...SHRIMP, Vry and Baker (2006) using laser ablation (LA)-MC-ICP-MS, Storey et al. (2007), Allen and Campbell |  | Santos, JoĆ£o Orestes S., Van Breemen, Otto B., Groves, David I., Hartmann, LĆ©o A., Almeida, Marcelo E., McNaughton, Neal J., Fletcher, Ian R. (2004) Timing and evolution of multiple Paleoproterozoic magmatic arcs in the TapajĆ³s Domain, Amazon Craton: constraints from SHRIMP and TIMS zircon, baddeleyite and titanite UāPb geochronology. Precambrian Research, 131 (1) 73-109 doi:10.1016/j.precamres.2004.01.002 | Journal (article/letter/editorial) | | in the Parauari River basin at the Rosa de Maio Mine (Santos et al., 1975). Several authors, including...granite of the Maloquinha Suite from the Santa Rita Mine (JO199) were dated at 2459 Ā± 11 Ma (three grains)...strong fractionation of feldspar, FeāTi oxides, apatite and zircon. The CreporizĆ£o, Tropas and Parauari...Suite Monzogranite JO107 was collected at the Joel Mine, 12 km to the east of the CreporizĆ£o village (CreporizĆ£o...Pacu Rhyodacite, MM36 Barro Vermelho Granite, BV1 Pepita Syenogranite, MP52 Santa Rita Granite, JO199 Cumaru |  | | Journal (article/letter/editorial) | | Germany AND LLUĆS FONTBOTĆ Section des Sciences de la Terre, UniversitĆ© de GenĆØve, Rue des MaraĆ®chers 13... Chile. This belt includes the large Candelaria mine and a group of middle- and small-sized mines in...of magmatic origin. Anhydrite from the Candelaria mine paragenetically overlaps with chalcopyrite. Fluid...Q. Paipote Ru ta Closed mine Carmen ChaƱeral 5-P an am eri ca na Mine in operation 26Ā° Mantos...oxide Cu-Au deposit El Tofo Nantoco El Romeral La Serena City Trinidad SocavĆ³n Rampa Resguardo Carola |  | | Report (issue) | | adjective adverb Argentina Arizona Baja California Bolivia Brazil California Central America Chile chemistry...Argentina Arizona (EE.UU.) Baja California (Mexico) Bolivia Brasil California (EE.UU.) America Central Chile...Viceroyalty of Peru was marcos par cajon. In modern day Bolivia and Peru the cajon is defined as 5,000 and 6,000...000 libras respectively, hence: marco por cajon (Bolivia) marco por cajon (Peru) 100 grams per tonne 83...a para varies according to country: Argentina Bolivia Brazil Chile Colombia Costa Rica Cuba Curacao Ecuador |  | | Book | | Co. 0.002% Tellurium Te 0.0000002% Lanthanum La 0.002% Rhodium Rh 0.0000001 % Lead Pb 0.002%...haematites. Syenites could contain epidote, titanite, apatite, prehnite, axinite and tremolite. Metamorphic rocks...clinochlores, magnetites, and, less frequently, zoisite, apatite, titanite, clinozoisite. Rarer, however, are the...and chlorine schists often contain magnesite, apatite and actinolite. Finally, such minerals as andalusite...are the accessory minerals: zircon, titanite and apatite. These are followed by those minerals containing |  | Imaoka, Teruyoshi, Nakashima, Kazuo, Kamei, Atsushi, Hayasaka, Yasutaka, Ogita, Yasuo, Ikawa, Toshiyuki, Itaya, Tetsumaru, Takahashi, Yoshio, Kagami, Hiroo (2014) Anatomy of the Cretaceous Hobenzan pluton, SW Japan: Internal structure of a small zoned pluton, and its genesis. Lithos, 208. 81-103 doi:10.1016/j.lithos.2014.09.002 | Journal (article/letter/editorial) | | granitoids (magnetite, ilmenite, pyrrhotite, titanite, apatite, allanite, zircon) are generally euhedral. The...brown pleochloric zoned grains of about 0.1 mm. Apatite and zircon are generally smaller than 50 Ī¼m in...SRM987 standard and the 143Nd/144Nd ratio of the La Jolla standard were measured during this study. The...30 ppm, ~1.9ā3.4 times chondrite) compared to GD. (La/Sm)n ratios increase systematically from 3.9 in the...magma from the closure temperature of Results of the LA-ICP-MS UāPb zircon analyses are listed in Table 2 |  | Mukherjee, Sneha, Ghosh, Gautam, Das, Kaushik, Bose, Sankar, Hayasaka, Yasutaka (2018) Geochronological and geochemical signatures of the granitic rocks emplaced at the north-eastern fringe of the Eastern Dharwar Craton, South India: Implications for late Archean crustal growth. Geological Journal, 53 (5) 1781-1801 doi:10.1002/gj.3007 | Journal (article/letter/editorial) | | Gneiss. These TTGs and Sargur rocks are unconformably LAāICPMS) data of one suite of granites from the Chitrial...important for U mineralization within biotite and apatite (Figure 4b). The groundmass is composed of quartz...Mesoproterozoic Srisailam Formation (Bhoopathi, Kumar, apatite, zircon, and monazite. Muscovite occurs intergrown...biotite is associated with rutile, monazite, and apatite will be dealt with separately while this study...geochronological evolution of the granite suite which in apatite (Figure 4b). Ilmenite has a similar habit, as subhedral |  | | Journal (article/letter/editorial) | | rutile, tourmaline, garnet, ilmenite, monazite, apatite and epidote) and opaque of varieties (Chaudhuri...their technical and laboratory support during the LA-ICPMS analysis. The fieldwork for this investigation...2008. Brief introduction to the Windows program Pepita: data visualization, and reduction, outlier rejection...continental crustal growth in SE Pakistan: Evidence from LA-ICP-MS UāPb re zircon ages from granites of the...2016. Detrital zircon geochronology (UāPb SHRIMP and LA-ICPMS) from the Ampani Basin, Central India: of |  | Liu, Yi-Can, Gu, Xiao-Feng, Li, Shu-Guang, Hou, Zhen-Hui, Song, Biao (2011) Multistage metamorphic events in granulitized eclogites from the North Dabie complex zone, central China: Evidence from zircon UāPb age, trace element and mineral inclusion. Lithos, 122 (1) 107-121 doi:10.1016/j.lithos.2010.12.005 | Journal (article/letter/editorial) | | petrological data, the present zircon SHRIMP and LA-ICPMS UāPb dating provides precise constraints on...omphacite, coesite/quartz pseudomorphs and ļ¬uor-apatite commonly occur as inclusion in garnet or zircon...be accompanied by clinopyroxene + amphibole + apatite needles, which attest to the presence of a SiāTiāNaāP-rich...zircon from three samples are reported in Fig. 3. LA-ICPMS zircon UāPb dating for sample 031201A was carried...concentrations of zircons were calculated using Pepita software with the zircon SiO2 contents as internal |  | Liu, Yi-Can, Zhang, Pin-Gang, Wang, Cheng-Cheng, Groppo, Chiara, Rolfo, Franco, Yang, Yang, Li, Yuan, Deng, Liang-Peng, Song, Biao (2017) Petrology, geochemistry and zirconology of impure calcite marbles from the Precambrian metamorphic basement at the southeastern margin of the North China Craton. Lithos, 290. 189-209 doi:10.1016/j.lithos.2017.08.011 | Journal (article/letter/editorial) | | for the Wuhe Complex. Xu et al. (2006b) reported LA-ICP-MS zircon U-Pb ages from a garnet-plagioclase...magnetite IP (partially replaced by limonite), apatite, tourmaline, barite and rare rutile (Figs. 3 and...epidote are secondary phases. Titanite, rutile, apatite, opaque CE P minerals (magnetite, replaced by...Titanite, rutile, opaque minerals, tourmaline and apatite occur as accessory phases (Figs. 3eļh and 4cļf)...concentrations of zircons were calculated using Pepita software MA with the zircon SiO2 contents as |  | Santos, JoĆ£o Orestes Schneider, Groves, David Ian, Hartmann, LĆ©o Afraneo, Moura, MĆ”rcia AbrahĆ£o, McNaughton, Neal Jesse (2001) Gold deposits of the TapajĆ³s and Alta Floresta Domains, TapajĆ³sāParima orogenic belt, Amazon Craton, Brazil. Mineralium Deposita, 36 (3) 278-299 doi:10.1007/s001260100172 | Journal (article/letter/editorial) | | explored the region, always surrounding a known mine site. In some areas, exploration has reached the...Reservation. Only one gold mine is now active in this domain (AnauaĆ mine). Because of limited data,...disseminated ore zones at the MaueĆs (or EspĆµĆ rito Santo) mine were generated during a period of transpression...quartz was formed at 240Ā±320 Ā°C (David Mine) and 220Ā± 340 Ā°C (Joel Mine). In both deposits, CO2 was not detected...is no preserved biotite, magmatic titanite and apatite are absent, and phengite and chlorite are abundant |  | Li, Yuan, Liu, Yi-Can, Yang, Yang, Rolfo, F., Groppo, C. (2020) Petrogenesis and tectonic significance of Neoproterozoic meta-basites and meta-granitoids within the central Dabie UHP zone, China: Geochronological and geochemical constraints. Gondwana Research, 78. 1-19 doi:10.1016/j.gr.2019.08.005 | Journal (article/letter/editorial) | | quartz, and biotite, with minor amphibole 192 and apatite (Fig. 3c-d), while the high-Si meta-granitoid is...Zircon trace elements analyses were performed by LA-ICP-MS at the CAS Key 274 Laboratory of Crust-Mantle...contents of zircons 279 were calculated by using Pepita software with the zircon SiO2 as internal standard... 311 fractionation relative to 312 NBS987 and La Jolla standard solutions analyzed along with samples...06). Their (La/Yb)N 342 (primitive mantle normalized) ratios range from 2.2 to 7.5 and (La/Sm)N from |
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