 | | Journal (article/letter/editorial) | | November-December: Roebling Apatite, Pulsifer quarry, Auburn, Maine; photo by Victor E . Kranz. Aegirine-augite... , book review, The TourmaĀ line, 453 Berkeley Quarry, Cross, South Carolina, J . J . Howe, 240 Bertrandite...Boston Mineralogical Symposium, CamĀ bridge, Massachusetts, M. Ryan, 270 Boulangerite, 190 Brazil, Minas...Wollastonite and Titanite Near Natural Bridge, Lewis County, New York, 78; 13th Rochester Academy of Science...Specimen Mineralogy, 114 Cheralite, 190 Chips from the Quarry, 5, 77, 149, 221, 301 Chlorite, 190 Chrysoberyl |  | | Report (volume) | | BUL.L.ETIN 354 CHIEF COMMERCIAL GRANITES OF MASSACHUSETTS, NEW HAMPSHIRE AND RHODE ISLAND BY T. NELSON...granites and quarries............................ Massachusetts...............................................the granites and quarries Continued. Massachusetts Continued. Quincy......................................geology........................................ The quarry............................................ New...................... Glossary of scientific and quarry terms.................................. 140 140 |  | | Report (volume) | | ___ Groton____________________________ Oriinge County __________________________ Topsham___________________________..._ Randolph ___________________________ Orleans County- _______________________ Derby Barton _ _________...granite and finished product Continued. Washington County _____________________ 121 Barre and Williamstown________________...______ Windham County ___. .________ Ā± ________ Dummerston___ ____ ____________ Windsor County __._.____________________...granite and finished product___'.___ 164 Carroll County ___________ ______________ 164 Con way ______ |  | Cao, MingJian, Hollings, Pete, Cooke, David R., Evans, Noreen J., McInnes, Brent I.A., Qin, KeZhang, Li, GuangMing, Sweet, Gabe, Baker, Mike (2018) Physicochemical Processes in the Magma Chamber under the Black Mountain Porphyry Cu-Au Deposit, Philippines: Insights from Mineral Chemistry and Implications for Mineralization. Economic Geology, 113 (1) 63-82 doi:10.5382/econgeo.2018.4544 | Journal (article/letter/editorial) | | coexisting magnetite-ilmenite, magmatic anhydrite, and zircon, consistently show a high oxidation state of >NNO+1...anhydrite, and zircon were chosen. Due to scarcity and small grain size, only five zircon samples were...quartz, and accessory minerals (apatite, titanite, zircon, rutile, ilmenite, pyrite, and chalcopyrite). Plagioclase...obvious zonation. Although the ilmenite growing with zircon and magnetite probably underwent some degree of...and Ti (166 ppm). The ILMAT Excel spreadsheet (Lepage, 2003) was used to recalculate compositions and |  | | Journal (article/letter/editorial) | | 1993; LePage and Basinger, 1991, 1995; McIver and Basinger, 1999; LePage, 2001, 2007; Lepage, 2003;...Mount Moore Formation at Split Lake was dated from zircon crystals found in an ash bed in the Mount Lawson...Harrington et al., 2012; Eberle and Eberth, 2015). Zircon crystals recovered from volcanic ash from coal...al., 2013), although due to the small number of zircon grains recovered the authors caution that this...for terrestrial ecosystems. Proc. Natl. Acad. Sci. USA 100, 167ā170. Kraus, M.J., McInerney, F.A., Wing |  | | Journal (article/letter/editorial) | | primary magmatic Th-rich zircon is typically overgrown by Th-poor zircon containing thorite micro-inclusions...contrast, in the more aluminous subgroup rocks, zircon is weakly zoned and exhibits very low Th but relatively...Absent Quartz, K-feldspar, arfvedsonite, aegirine, zircon, fluorite 711 Aluminous subgroup (AA) Alkali... ACCESSORY MINERALS IN A-TYPE GRANITES, SE CHINA Zircon in PA granites The phase occurs as subhedral to...200 mm long, rarely up to 1.2 mm. In BSE images, zircon is markedly heterogeneous in composition and in |  | Huang, Xiao-Long, He, Peng-Li, Wang, Xue, Zhong, Jun-Wei, Xu, Yi-Gang (2016) Lateral variation in oxygen fugacity and halogen contents in early Cretaceous magmas in Jiaodong area, East China: Implication for triggers of the destruction of the North China Craton. Lithos, 248. 478-492 doi:10.1016/j.lithos.2016.02.008 | Journal (article/letter/editorial) | | newly acquired zircon U-Pb ages, whole-rock geochemistry and Sr-Nd-Hf isotope data, zircon Lu-Hf isotope...studied gabbro-diorite samples collected from a quarry at Gongjia village (Fig. 1c) mainly consist of...Fe-Ti oxides (1ā5 %). Accessory minerals include zircon, apatite and titanite. Subhedral-anhedral Fe-Ti...and biotite (Fig. 2c, d). Fe-Ti oxides, apatite, zircon and titanite are common accessory minerals in all... D technique prior to U-Pb isotopic analyses. Zircon U-Pb analyses were performed on a TE CAMECA IMS-1280 |  | Wang, R., Richards, J. P., Hou, Z.-q., Yang, Z.-m., Gou, Z.-b., DuFrane, S. A. (2014) Increasing Magmatic Oxidation State from Paleocene to Miocene in the Eastern Gangdese Belt, Tibet: Implication for Collision-Related Porphyry Cu-Mo Ā Au Mineralization. Economic Geology, 109 (7) 1943-1965 doi:10.2113/econgeo.109.7.1943 | Journal (article/letter/editorial) | | eastern Gangdese belt are characterized by low zircon Ce4+/Ce3+ ratios (mostly <50; 6.0ā66.8; average...rocks from the eastern Gangdese belt show higher zircon Ce4+/Ce3+ ratios (mostly >50; 32.3ā141.9, average...locations and ages (in Ma) of samples dated by zircon U-Pb from this study and the literature (see Table...or K-feldspar (Fig. 3E). Magnetite, sphene, and zircon are common accessory minerals. Miocene suite Miocene...07 Ā± 0.08 Lithogeochemistry FeO Amp Mt-Ilm Zircon Py Pl Age reference This study ā ā Tafti (2011) |  | Wang, Rui, Collins, William J., Weinberg, Roberto F., Li, Jin-xiang, Li, Qiu-yun, He, Wen-yan, Richards, Jeremy P., Hou, Zengqian, Zhou, Li-min, Stern, Richard A. (2016) Xenoliths in ultrapotassic volcanic rocks in the Lhasa block: direct evidence for crustāmantle mixing and metamorphism in the deep crust. Contributions to Mineralogy and Petrology, 171 (7) doi:10.1007/s00410-016-1272-6 | Journal (article/letter/editorial) | | They also have distinctive high Th/U ratios, high zircon Ī“18O (+8.73ā8.97 ā°) values, and extremely low ĪµHfi...mass spectroscopy (SIMS) zircon UāPb dating combined with systematic zircon HfāO isotopic and trace element...Crustāmantle hybridization Ā· Tibetan crust Ā· Garnet Ā· Zircon Ā· OāHf isotope Introduction 13 Contrib Mineral...values (ā17.4 to ā7.1) and high (87Sr/86Sr)i and zircon Ī“18OVSMOW values (0.7068ā 0.7399 and +6.2 to +8...moderate (187Os/188Os)i ratios (0.224ā0.835), and low zircon Ī“18OVSMOW values (+5.5 to +6.6 ā°), suggestive of |  | Walker, Barry A., Klemetti, Erik W., Grunder, Anita L., Dilles, John H., Tepley, Frank J., Giles, Denise (2013) Crystal reaming during the assembly, maturation, and waning of an eleven-million-year crustal magma cycle: thermobarometry of the Aucanquilcha Volcanic Cluster. Contributions to Mineralogy and Petrology, 165 (4) 663-682 doi:10.1007/s00410-012-0829-2 | Journal (article/letter/editorial) | | temperatures correspond well with previously published zircon temperatures ranging from *670ā900 Ā°C. Two different...Sciences, University of Washington, Seattle, WA, USA e-mail: barryalanwalker@gmail.com E. W. Klemetti...Geosciences, Denison University, Granville, OH, USA A. L. Grunder J. H. Dilles F. J. Tepley D....Geosciences, Oregon State University, Corvallis, OR, USA well. We also compare amphibole and amphiboleāplagioclase...pyroxene temperature estimates are always highest, zircon temperature estimates are lowest, and FeāTi oxide |  | | Journal (article/letter/editorial) | | Kristalle L & L Jewelrynapidary L & T Creations Ron LePage F. Lietard 1,. J. P. Zarko Ljuboja LMB-Charles...Sri tanka, colors: green, blue, smoky, clt- Green Zircon: Clean, well cut, pearshape, 4.53 CIS at $30/ct...Rochester, New York (symposium) Spiingfield, Massachusetts Tacoma, Washington (symposium) Tucson, Arizona |  | | Journal (article/letter/editorial) | | oxybarometry, FeāTi oxide thermometry and -oxybarometry, zircon saturation thermometry, and two-feldspar thermometry...thermometers reveals that temperatures obtained via zircon Communicated by Othmar Muntener. Electronic supplementary...partitioning Ā· Silicic magmas Ā· FeāTi oxides Ā· Zircon saturation Ā· Melt inclusions Ā· LAāICPāMS Introduction...two-feldspar thermometer (Putirka 2008) and the zircon saturation thermometer (Watson and Harrison, 1983)...pyroxene, qtz quartz, tit titanite, xe xenotime, zirc zircon, moly molybdenite a Including both minerals mentioned |  | Meng, Xuyang, Mao, Jingwen, Zhang, Changqing, Zhang, Dongyang, Liu, Huan (2018) Melt recharge, f O2-T conditions, and metal fertility of felsic magmas: zircon trace element chemistry of Cu-Au porphyries in the Sanjiang orogenic belt, southwest China. Mineralium Deposita, 53 (5) 649-663 doi:10.1007/s00126-017-0768-y | Journal (article/letter/editorial) | | conditions, and metal fertility of felsic magmas: zircon trace element chemistry of Cu-Au porphyries in...Sanjiang copper porphyry belt, southwest China. Zircon chemistry was used to constrain the magmatic evolution...optimal diagnostic interval on CeIV/CeIII-TTi-in-zircon and (Eu/Eu*)N plots for generating magmatic hydrothermal...(Buddington and Lindsley 1964; Ghiorso and Sack 1991; Lepage 2003), are all adequate in evaluating the magmatic...igneous rock signature. Accessory minerals such as zircon can better retain the primary chemical information |  | | Journal (issue) | | specimens Natural History Museum o f Los Angeles County C urator (mineralogy): Dr. A nthony R. K am pf...PUBLISHING P.O. Box 37072, Tucson, Arizona 85740 USA Richard A. Bideaux, General Partner (602) 297-4862...at the Tucson Show in 1989 was collected from a quarry in the vicinity of Wagholi village. Thousands of...WAGHOLI QUARRIES For many years, the principal quarry at Wagholi has produced a dense, unaltered black...Main quarry, is the site of the best cavansite find to date. Early in the operation of this quarry a vertical |  | Neff, John L., Hagadorn, James W., Sunderlin, David, Williams, Christopher J. (2011) Sedimentology, facies architecture and chemostratigraphy of a continental high-latitude PaleoceneāEocene successionāThe Chickaloon Formation, Alaska. Sedimentary Geology, 240 (1) 14-29 doi:10.1016/j.sedgeo.2011.07.002 | Journal (article/letter/editorial) | | 01002, USA Department of Earth Sciences, Denver Museum of Science and Nature, Denver, CO 80205, USA Department...Geosciences, Lafayette College, Easton, PA 18042, USA d Department of Earth and Environment, Franklin and...and Marshall College, Lancaster, PA, 17603, USA b c a r t i c l e i n f o Article history: Received...analyses were conducted at the University of MassachusettsāAmherst Biogeochemistry laboratory; values are...DM08-4 Major fossil collection locality Detrital zircon sample J.L. Neff et al. / Sedimentary Geology |  | Zheng, Jiahao, Mao, Jingwen, Yang, Fuquan, Chai, Fengmei, Shen, Ping (2017) Petrological and geochemical features of the early Paleozoic granitic gneisses and iron ores in the Tianhu iron deposit, Eastern Tianshan, NW China: Implications for ore genesis. Lithos, 286. 426-439 doi:10.1016/j.lithos.2017.06.021 | Journal (article/letter/editorial) | | Abstract This paper reports whole-rock geochemical, zircon U-Pb and Hf isotopic data for ore-hosted granitic...protoliths and the formation ages of the Tianhu Group. Zircon U-Pb age of ore-hosted granitic gneiss (ca. 459...enrichment in NU LREE and LILE and depletion in HFSE. Zircon Hf isotopic compositions show a MA positive trend...contribution, we present the whole-rock geochemical, zircon U-Pb and Hf isotopic data for ore-hosted granitic...considered as a Precambrian basement. However, zircon U-Pb ages for widespread metamorphic D rocks |  | | Report (chapter) | | orthopyroxene; Bt, biotite; FeTiOx, Fe āTi oxides; Zirc, zircon; Apat, apatite; Qtz, quartz; Cpx, clinopyroxene;...FeāTi oxide compositions and the ILMAT model of Lepage (2003). Note that data for UTDM28A has not been...FeāTi oxide compositions with the ILMAT model of Lepage (2003). Pre-595 ka data are limited to UTUGSM14...Feā Ti oxide compositions and the ILMAT model of Lepage (2003). Temperature and fO2 for samples from Sparks...orthopyroxene + clinopyroxene + FeāTi oxides + zircon + apatite + quartz + sanidine + olivine) uniform |  | MacDonald, Ray, Nejbert, Krzysztof, BagiÅski, BogusÅaw, Jurewicz, Edyta (2018) TiāZrāNb-bearing accessory minerals in high-K trachyandesitic rocks from the Western Outer Carpathians, Moravia, Czech Republic. European Journal of Mineralogy, 30 (1) 135-147 doi:10.1127/ejm/2017/0029-2693 | Journal (article/letter/editorial) | | 840 Ā°C. Zirconolite was stabilized relative to zircon by the TiāCa-rich nature of the melts and to baddeleyite...Table 1 and consist of different combinations of zircon (ZrSiO4), zirconolite (CaZrTi2O7), baddeleyite...Novy SvÄtlov Castle; Boj2n is from the Lochkov quarry; and Nez-1, Nez-2n and 2 Regional geology Potassium-rich...igneous suites. Locality Lithology CGM Zirconolite Zircon Baddeleyite Ilmenite Magnetite Titanite Formation...QUILF 95 methodology in the ILMAT worksheet of Lepage (2003), were T = 840 Ā°C at fO2 ā¼ NNO, broadly consistent |  | | Journal (article/letter/editorial) | | diorite, and diorite, are characterized by moderate zircon Ce4+/Ce3+ ratios (15.9 ā 163) and Eu/Eu* ratios...mineral compositions (magnetite, ilmenite, amphibole, zircon) and geochemistry of the Baogutu intrusions to...siltstone, tuff, basalt and siliceous units. The zircon SHRIMP age of the tuff was 328.1 Ā± 1.8 Ma (Wang...include magnetite, ilmenite, sphene, apatite and zircon. Plagioclase, which is the most abundant primary...suggesting that they were crystallized from magmas. Zircon analyses were performed at Northwest University |  | Peng, Peng, Wang, Xinping, Lai, Yong, Wang, Chong, Windley, Brian F. (2015) Large-scale liquid immiscibility and fractional crystallization in the 1780 Ma Taihang dyke swarm: Implications for genesis of the bimodal Xiong'er volcanic province. Lithos, 236. 106-122 doi:10.1016/j.lithos.2015.08.015 | Journal (article/letter/editorial) | | Also high-FeāTi volcanic rocks occur in Columbia (USA) (Hartley and Thordarson, 2009), ParanaāEtendeka...SiO2 N 63 wt.%) (Fig. 2). Precise baddeleyite and zircon U-Pb dates show that all the above groups of both...magnetite, apatite, quartz, olivine, baddeleyite/zircon, as well as intergrowths of orthopyroxene, amphibole...occurs in the LT and HT groups, whereas igneous zircon is present in all the three groups. There are magnetiteāilmenite...magnetiteāilmenite pairs (Fig. 4n-o) following LePage (2003) (Fig. 13c). This demonstrates that oxygen |  | Piilonen, P. C., McDonald, A. M., Grice, J. D., Cooper, M. A., Kolitsch, U., Rowe, R., Gault, R. A., Poirier, G. (2010) Arisite-(La), a new REE-fluorcarbonate mineral from the Aris phonolite (Namibia), with descriptions of the crystal structures of arisite-(La) and arisite-(Ce) Mineralogical Magazine, 74 (2) 257-268 doi:10.1180/minmag.2010.074.2.257 | Journal (article/letter/editorial) | | with accessory hauĢyne, leucite, monazite and zircon (von Knorring and Franke, 1987). It also contains...Arisite-(La) was discovered in phonolite from the Aris quarry, Namibia, and is named for its type locality. Both...reļ¬nement process. At this point, the program MISSYM (Lepage, 1988) was employed to search for higher symmetry...Exploration. Bruker AXS Inc., Madison, Wisconsin, USA. Cromer, D.T. and Liberman, D. (1970) Relativistic...stationaryā. Nature, Physical Science, 243, 29 30. LePage, Y. (1988) MISSYM1.1 a ļ¬exible new release. Journal |  | Melluso, L., Srivastava, R. K., Petrone, C. M., Guarino, V., Sinha, A. K. (2012) Mineralogy and magmatic affinity of the Jasra intrusive complex, Shillong Plateau, India. Mineralogical Magazine, 76 (5) 1099-1117 doi:10.1180/minmag.2012.076.5.03 | Journal (article/letter/editorial) | | minerals; zrnl, zirconolite; badd, baddeleyite (and x*, zircon); carb, carbonates. The symbols are xx, essential...accessory phases in the JS-5S syenite: early apatite, zircon and zirconolite, enclosed in phlogopite with interstitial...based on the magnetiteāilmenite geothermometer (Lepage, 2003) reach values as high as 865ĀŗC, with variable...endmember (90 96 mol.%; Supplementary Table 7). Zircon (ZrSiO4), zirconolite (CaZrTi2O7) and baddeleyite...Geological Society of America, Boulder, Colorado, USA. Dawson, J.B., Smith, J.V. and Steele, I.M. (1995) |  | Ellis, Ben S., Barry, Tiffany, Branney, Michael J., Wolff, John A., Bindeman, Ilya, Wilson, Rob, Bonnichsen, Bill (2010) Petrologic constraints on the development of a large-volume, high temperature, silicic magma system: The Twin Falls eruptive centre, central Snake River Plain. Lithos, 120 (3) 475-489 doi:10.1016/j.lithos.2010.09.008 | Journal (article/letter/editorial) | | University, P.O. Box 642812, Pullman, WA 99164-6376, USA d Geological Sciences, University of Oregon, 1275... Oregon, OR 97403-1272, USA e 927 East 7th Street, Moscow, Idaho, 83834, USA b c a r t i c l e i n...pigeonite, augite, ilmenite, titanomagnetite, accessory zircon and apatite. Several different thermometers indicate...University, P.O. Box 642812, Pullman, WA 99164-6376, USA. Tel.: + 1 509 335 9185; fax: + 1 509 335 3700. E-mail...Mountains The Snake River Plain of southern Idaho, USA, was the site of voluminous bimodal, basaltārhyolite |  | Bartoli, Omar, Meli, Sandro, Bergomi, Maria Aldina, Sassi, Raffaele, Magaraci, Deborah, Liu, D.-Y (2015) Geochemistry and zircon U-Pb geochronology of magmatic enclaves in trachytes from the Euganean Hills (NE Italy): further constraints on Oligocene magmatism in the eastern Southern Alps. European Journal of Mineralogy, 27 (2) 161-174 doi:10.1127/ejm/2015/0027-2425 | Journal (article/letter/editorial) | | Published online 5 December 2014 Geochemistry and zircon U-Pb geochronology of magmatic enclaves in trachytes...towards the core of the enclaves. Both types have zircon U-Pb ages of ~30ā32 Ma, indicating that they are...in the evolution of magma in the VVP. The first zircon UPb ages from the Euganean rocks prove a Lower...eruptive events. Key-words: magmatic enclaves; zircon U-Pb geochronology; SHRIMP; Euganean Hills; Veneto...mineral chemistry, whole-rock geochemistry and zircon U-Pb age of magmatic enclaves from the Euganean |  | Hazen, R. M., Golden, J., Downs, R. T., Hystad, G., Grew, E. S., Azzolini, D., Sverjensky, D. A. (2012) Mercury (Hg) mineral evolution: A mineralogical record of supercontinent assembly, changing ocean geochemistry, and the emerging terrestrial biosphere. American Mineralogist, 97 (7) 1013-1042 doi:10.2138/am.2012.3922 | Journal (article/letter/editorial) | | AlmadĆ©n mine in Santa Clara County and the New Idria mine in San Benito County (two of the worldās largest...literature. For example, the Hg mining district of Pike County, Arkansas, is hosted in Carboniferous sediments...and drusy quartz from the Socrates mine, Sonoma County, California; (b) cinnabar (HgS), RRUFF 070532,...the Mazatzal Mountains, Sunflower District, Gila County, Arizona (Lausen 1926; Anthony et al. 1995). In...and McDougall (1995) AU02 Broken Hill, Yancowinna County, New South Wales Birch (1999), Frost et al. (2005) |
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