 | | Journal (article/letter/editorial) | | ROCKS IN THE TIN–SPODUMENE BELT OF NORTH CAROLINA AND SOUTH CAROLINA, USA Samuel E. SWANSON§ Department of...30605, USA Abstract The Tin–Spodumene Belt (TSB) along the border of North and South Carolina, southeastern...southeastern USA, is composed of hundreds of en échelon dikes intruded into amphibolite-facies mica schist...to very coarse-grained spodumene, plagioclase, K-feldspar, quartz, muscovite, and accessory amounts of...fabric that also heals fractures in spodumene and feldspar. Plagioclase (Ab95–96) in the pegmatite is only |  | | Report (chapter) | | Sierras de C6rdoba C. W. R A P E L A 1, R. J. P A N K H U R S T 2, C. C A S Q U E T 3, E. B A L D O 4,...Precordillera, see Pankhurst & Rapela (this volume). and K-Ar determinations, (ii) thermo-barometric calculations...METAMORPHISM Contact metamorphism G3: Post-orogenic, high-K batholiths and plutons Pegmatite III D3: Upright...of which is an abundant porphyritic phase with K-feldspar megacrysts (Lira & Kirschbaum, 1990; Rapela et...granites are enriched in incompatible elements such as K, Rb and U and LREE, and in some cases in HFS elements |  | | Journal (article/letter/editorial) | | Sciences, Washington University, St. Louis, MO 63130, USA (Received January 23, 1992; revised and accepted...apatite; most samples contain small amounts of K-feldspar (locally mesoperthite) and quartz. It is noteworthy...(high Ga/A1), Zr, Zn, Y and REE, but low in Rb (high K / R b ) , U, Th, Ni, Cr, Co, Sc and V (high Ti/V)...pyroxene and apatite ultimately results in Si- and K-enrichment in residual liquids, leading to quartz-mangerite...Sciences, Washington University, St. Louis, MO 63130, USA. gard massif anorthosites and related rocks as consisting |  | | Journal (article/letter/editorial) | | o = outcrop, b = blocks MCa = medium-Ca granite, LCa = low-Ca granite Tab. 1 Summary of studied granite...86 LCa; 0.48 LCa; 0.41 MCa; 0.93 LCa; 0.35 LCa; 0.56 MCa; 0.67 LCa; 0.59 MCa; 0.68 MCa; 1.16 LCa; 0.65...MCa; 1.15 LCa; 0.41 LCa; 0.60 LCa; 0.47 LCa; 0.52 LCa; 0.43 LCa; 0.43 LCa; 0.61 LCa; 0.48 LCa; 0.59 MCa;...(Ca), MgAl 2O 4 (Mg), hornblende (Ti), sanidine (Al, K), albite (Na), fluorapatite (P), chromite (Cr), other...not only into apatite, but also plagioclase and K-feldspar it gives misleading results. This results in |  | | Journal (article/letter/editorial) | | Agardite-(Nd), NdCu6(AsO4)3(OH)6·3H2O, from the Hilarion Mine, Lavrion, Greece: mineral description and chemical...dominant form {001}. H ∼ 1, Dcalc = 2.31 g/cm3 (at 293 K), the streak is light blue and the luster is vitreous...the following unit-cell constants measured at 293 K: a = 7.790(1), b = 10.643(1), c = 5.838(1) Å) are...of singlecrystal diffraction data collected at 100 K (Bruker AXS Smart Apex CCD MoKα radiation), with a...Academy of Sciences, Moscow. D.B. Chibaite* K. Momma, T. Ikeda, K. Nishikubo, N. Takahashi, C. Honma, M. Takada |  | | Journal (article/letter/editorial) | | zoning in garnet M. A. SMIT, 1,2 E. E. SCHERER2 AND K. MEZGER3 1 Department of Earth Science, UC Santa Barbara...Barbara, 1006 Webb Hall, Santa Barbara, CA 93106, USA (msmit@geol.ucsb.edu) 2 Institut für Mineralogie...representative of, the rim Pressure Gas constant (8.314472… J K)1 mol)1) Reservoir radius Hypothetical diffusing species...conditions of 0.75–0.80 GPa and at least 750 C (2-feldspar thermometry; Mezger et al., 1989a, 1990). Recent...porphyroblastic garnet, plagioclase, quartz, large K-feldspar crystals, secondary cordierite 346 M. A. SMIT |  | | Journal (article/letter/editorial) | | mineral k, in which the molar content of component i is nik , such that in a layer containing k, S X i=1...to the stoichiometric coefficients vkr of phases k in the reaction at boundary r, such that for mass...net/8/93/2017/ Jir = Jir−1 + dε 0 X nik vkr . dt k=1 (5) In Eq. (5), φ is the number of phases in layer...X vk nik = 0 (6) k=1 In a closed system, the summation is over all minerals k. In an open system,...across all layers in Eq. (6): (−1G) = φ X k=1 vk S X i=1 nik k −1 qX hr∗ r=1 dµi dx r∗ . (7) |  | | Journal (article/letter/editorial) | | Western Alps) SIMONE TUMIATI1,*, SILVANA MARTIN2 and GASTON GODARD3 1 Dipartimento di Scienze della Terra...modified after Martin & Kienast, 1987 of the Praborna mine. Sequence numbering is consistent with Table 1 and...pyroxene þ albite) and Si-rich phengite (Ba-rich K-feldspar þ Mn-rich biotite), and as Na–Ca amphibole þ...into carbonate-bearing symplectites (Ba-rich K-feldspar þ hollandite þ calcite, minor witherite, strontianite...late veins, are characterised by albite, quartz, K-feldspar, titanite, amphibole (tremolite), barite, rhodonite |  | | Journal (volume) | | and they represent low degrees of melting of low-K tholeiitic island are basalts with gabbroie to amphibolitic...gneissl gneissie tonalite: R-Rastinpää. T - Toholampi. K-Konnekoski. J-Joutenlahti. P- Pukkihariu. S-Särkilampi...8 8 Ga). The Rautalampi area is bounded to the north and west by the rocks of the CFGC and to the so...sporadically as a minor constituent. Accessory potassium feldspar occurs mainly as antiperthite and epidote, magnetite...150 m wide that can be traced for at least 5 km. North of Toholampi gneissic tonalite occur a zone of amphibolite |  | | Journal (volume) | | granitoids ( 1.89-1.88 Ga) are dominated by high-K ca lca lkaline granodiorites, being commonly hybrid rocks...88- 1.86 Ga) in the North ofthe TSB (NTSB) are divided into highK and very high-K groups, interpreted...... ........... ........... ...... ........ 14 North of the Tampere Schist Belt (NTSB) ................Mica gneiss- migmatite Belt Tampere Schist Belt North of TSB Hirsilä Schist Belt Central Finland Granitoid...lithological features. The five main areas are North of the Tampere Schist Belt, Tampere Schist Belt |  | | Journal (article/letter/editorial) | | accessory of smectite, illite/mica, opal–CT, quartz, K–feldspar, plagioclase and opaque minerals. Geochemical...general concept that the cpt has higher Si/Al, Na + K/Ca + Mg ratios and thermal stability than hul, the...(Boles, 1972). Therefore, Ca–, Na–, K– and Sr–hul and Ca–, Na– and K–cpt are common in the nature (Coombs...cpt–rich tuffs in some studies are given as: Cs > Rb > K > Na > Li for the alkali elements and Ba > Sr > Ca...1961); Pb > Cd > Cu > Co > Cr > Zn > Ni > Hg (Owyhee County, Idaho and Ash Meadows, Nevada; Zamzow et al., |  | | Report (issue) | | mineralogic diversity that exists along the cordillera of North and South America. We wish to thank all of the field...:00-9:00 Drive to Superior 9:15-11:30 Magma, Superior Mine overview of district and Superior vein and manto...Passing mostly exotic copper in Cyprus Miami Ox Hide mine, and Bluebird area; and Magma's tailings that are...Superi o r Districts Superior Key 1 - Supe rior Mine Office 2 - Surface exposures 3 - Carlota 4 - Pin... Index map of Arizona showing location of Magma Mine (SUPERIOR). Fagure 2. |  | | Journal (article/letter/editorial) | | B. 6416-2 Mineral An•lytieel 6018 •uertz K-Feldspar 9.5 7.9 Biotite 3.6 Avs. Der. O.2 Jt•su•ta...Level Uu•,terod quartz Bonzonlte 1 quartz K-Feldspar 9.2 7.4 0.1 0.1 2 2 Biotite 2.9 O.1 2...20 m-wide SE of Berkeley Pit dike 6055-6 •mirtz K-Feldopar 10.1 8,1 0.2 0.2 6 3 Nt .Con.&$00 level...2 •de level H•Suetlte -2.0 O.1 2 •let •tb z•k B16 pegumtite Veins & oegresetions of qtzeK-•pero&...5 0.2 2 Location Trayohm 800 Renarke level K-V vein of t/mtely intergrown qtz & rc with minor |  | | Journal (article/letter/editorial) | | thermodynamic modelling Taus R. C. Jørgensen | Douglas K. Tinkham | C. Michael Lesher Mineral Exploration...1994; Spray et al., 2004) and superheated to ~2,000 K (Grieve, Dence, & Robertson, 1977; Ivanov & Deutsch...basement rocks, exposed to the west, north, and northeast (North Range) of the SIC, and polydeformed Palaeoproterozoic... JØRGENSEN | ET AL. CANADA Whistle-Parkin USA pin Ona Pum p form ation Zone On Ministic...presented in Figures S1 and S2. Map Area 1 is located north of the Frood‐Stobie Ni‐Cu‐ PGE deposit, east of |  | | Journal (article/letter/editorial) | | body, ~100 m long and ~60 m wide, bounded to the north and south by felsic orthogneiss (Fig. 1). The metadolerite...stretching lineation defined by elongate quartz–feldspar segregations. A reverse sense of shear based on...narrow layer of plagioclase, with or without K-feldspar and quartz. Coronas formed around recrystallized...predominantly of plagioclase, with lesser quartz and rare K-feldspar. This plagioclase-rich layer is mantled by a...aggregates mostly of plagioclase with quartz, K-feldspar and rare clinopyroxene, biotite and garnet. Kyanite |  | | Journal (article/letter/editorial) | | monoclinic potassium feldspar, (IG rnnonn) "Nao (Si,,*Al'*) t0"*(OH)o.1, from the Himalaya mine in the Mesa Grande...morphology, and no diffuse reflections with (h + k) odd have been observed.Direct refinement of the tetrahedral...rapid crystal growth, the bulk of the pegmatitic K-feldspar ordered to common orthoclase, then transformed...and, therefore, a neutron difiraction study of a feldspar crystal was undertaken to investigate the possible...of H in this feldspar species. Infrared absorption spectra of clear hydrothermal feldspar have shown no |  | | Journal (article/letter/editorial) | | of the geochemistry of basalts. The Na- and I(-feldspar% of BCS (British Chemical Standards-Bureau of...(kyanite) DOLOMITE Dun&e Dunite, chrysolite Feldspar, potash Feldspar, sod8 Gabbro-diorite G8lena Gases Glssses...9.7 T’, ThO,, 0.4% U,O, MAr?HEIMet al. (1974) For K-Ar dating Supply depleted. New sample in preparation...AsARo (1969, 1971) Also CRAM G and H. CRAM J and K for archseo~ogistsonly. -R and PI~EAT (1972) R&m (1973)...ROCHE and GO~~~ABAJU (1971) GBBSSXAN (1972), Scg~w~~lca (1972) &XIJLTZ et al. (1974) IL~NAG~ (1974s) Also |  | | Journal (volume) | | low pH, reducing, very low / C02 and hi gh aN./a K+ and a N./aC•2+ fluid . Simultaneously, their wa ll...predominamly ox idi zin g, hi gh/ co2' aC•2+a nd aN..'a K+fluid. Biotitization caused by element exchange between...margins of the igneous bodies in low aN./a K + and aC.ja K +, near- neutral, weakly reducing condit ions...Na depletion in the fluid , pH , the aN./a K + and ac,ja K +of the hydrothermal f lu id decreased, and...fluid was alkaline or near-neutral, had a high aN.)a K +, and moderate or high a c,,+ andfco, ' The alteration |  | | Journal (article/letter/editorial) | | mixture of lauryl polyglycol ether carboxylic acid (LCA) and nonylphenol polyglycol ether (NPE). A variety...Flotinor 7243 Fatty acid Fluorite collector 15–25 LCA; 5–15 NPE A Clariant Sylfat FA 2 Tall oil fatty... Fluorite collector 100 B Arizona Chemicals, USA Sodium fluorite NaF Fluorite activator 100 A&B...where they observed the improved floatability of feldspar and biotite gangue minerals as pulp temperature...minerals such as calcite, dolomite, pyroxene, K-feldspar and quartz, which ultimately resulted in CaF2 |  | Pokrovski, G. S., Roux, J., Hazemann, J.-L., Borisova, A. YU., Gonchar, A. A., Lemeshko, M. P. (2008) In situ X-ray absorption spectroscopy measurement of vapour-brine fractionation of antimony at hydrothermal conditions. Mineralogical Magazine, 72 (2) 667-681 doi:10.1180/minmag.2008.072.2.667 | Journal (article/letter/editorial) | | experimental artifacts common in less direct techniques. K EY WORDS : antimony, X-ray absorption spectroscopy...collected in both transmission and fluorescence mode at Sb K-edge (~30.5 keV) over the energy range 30.331.5 keV...(ln I0/I1) were recorded at 30.57 keV (above the Sb K-edge). Because Sb2O3 solid, dense NaClbearing solution...et al., 2006), and linear combination analysis (LCA) was performed using the two last samples as references...amplitude of the absorption-edge height over the Sb K-edge of transmission spectra (Dm) using an analogous |  | | Journal (issue) | | Claringbull, Ph.D., F.Inst.E, FGS Vice-President: R. K. Mitchell, FGA Council of Management D.J. Callaghan...C.Eng., FIMM, FGA I. Thomson, FGA V.E Watson, FGA K. Scarratt, FGA : Chief Executive R.R. Harding, B.Sc...Chairmen: Midlands Branch: D.M. Larcher, FBHI, FGA North-West Branch: W Franks, FGA Examiners: A. J. Allnutt...D., FGA D. G. Kent, FGA P Sadler, B.Sc, FGS, FGA K. Scarratt, FGA E. Stern, FGA M. Virkkunen, M.Phil...1970. Mineralische Tabellen, 5ed, Geest and Portig K-G, Leipzig. Ulbrich, H.H., 1973. Crystallographic |  | | Journal (article/letter/editorial) | | of the Late Triassic Sanshilipu monzogranites in North Qinling orogenic belt Junfeng Liu1,2 | Jiahao...mélange. The samples consist mainly of plagioclase, K-feldspar, quartz, bioAl2O3 (14.58–16.61%), K2O + Na2O...magma during post-collision of the South China and North China blocks. KEYWORDS geochemistry, geochronology...of two major sutures referred as the Shangdan North China blocks (Wu et al., 2006; Zheng, Chen, & Zhao...(Figure 1). The Triassic collision between the North In this study, we present new data of zircon U–Pb |  | | Journal (article/letter/editorial) | | thinking-based methods, such as life cycle assessment (LCA), life cycle costing, and life cycle sustainability...assessed from ashould perspective of life thinking. of LCA changed the More attention be paid to acycle project’s...perspective by integrating the product life cycle. LCA-based environmental impact assessment helps enterprises... An efficient methodology for utilization of K-feldspar and phosphogypsum with reduced energy consumption...Ji, L.; Yu, H.; Yu, B.; Jiang, K.; Grigore, M.; Wang, X.; Zhao, S.; Li, K. Integrated absorption–mineralisation |  | | Journal (issue) | | Mitchell Honorary Fellows R.T. Liddicoat [nr., E. Miles, K. Nassau Honorary Life Members D.}. Callaghan, E.A...Kessler, G. Monnickendam, L. Music, J.B. Nelson, K. Penton, P.G. Read, 1. Roberts, R Shepherd, CH. Winter...Winter Branch Chairmen Midlands: J.W. Porter North West: 1. Knight Scottish: J. Thomson Examiners AJ....rubellite crystal, 75 mm long, from the Cruzeiro mine, Minas Gérais, Brazil. See 'The location, geology...tourmaline-bearing pegmatites mainly consist of K-feldspar variably perthitized, albite, muscovite and milky |  | Lickfold, V., Cooke, D. R., Smith, S. G., Ullrich, T. D. (2003) Endeavour Copper-Gold Porphyry Deposits, Northparkes, New South Wales: Intrusive History and Fluid Evolution. Economic Geology, 98 (8) 1607-1636 doi:10.2113/gsecongeo.98.8.1607 | Journal (article/letter/editorial) | | synmineral K-feldspar QMP (K-QMP) pipes and dikes; late-mineral augite-biotite–K-feldspar QMP (KA-QMP)...propylitic alteration of the host volcanic rocks and K-feldspar alteration of the BQM occurred at each deposit...textures formed mostly during the emplacement of K-QMP and KA-QMP intrusions. Main-stage sulfide mineralization...associated with the K-QMP and, to a lesser extent, KA-QMP intrusions and their associated K-feldspar and sericite-hematite...generations of stockwork and sheeted quartz, K-feldspar, bornite, chalcopyrite, and gold-bearing veins |
|
