 | | Journal (article/letter/editorial) | | some calcium hydroxide from the dissolution of portlandite. The lower pH of the first leachate samples produced...This is expected to be due to the leaching of portlandite, releasing hydroxide during congruent dissolution...the loss of the strength providing (C-S-H and portlandite) cement phases from the NRVB due to long term...whereas the unleached sample also contained portlandite. No other crystalline phases were detected. As...leaching process appears to have removed all portlandite from these samples. The microstructures of all |  | | Journal (article/letter/editorial) | | evidencefor "portlandite II" phase I-MrNc CHou U.S. GeologicalSurvey,959 National Center,Reston,Virginia 22092...peaksnear 630'C for the melting experimentsof pure portlandite reported by Harker (1964) and Bai et al. (1994)...of a solid phase transition between portlandite and "portlandite II." INrnOnUCrrON The newly develop...HP-DTA. In his DTA study of the meltrng of pure portlandite,Harker (1964)found an additional peak at 630'C...CaCO. and HrO were presentas impuritiesin the portlandite, and that this peak was the result of a small |  | Viani, A., Gualtieri, A. F., Secco, M., Peruzzo, L., Artioli, G., Cruciani, G. (2013) Crystal chemistry of cement-asbestos. American Mineralogist, 98 (7) 1095-1105 doi:10.2138/am.2013.4347 | Journal (article/letter/editorial) | | of the bulk, and no weak layers, enriched in portlandite (CH in cement shorthand notation) surrounding...alite M3, b-belite, cubic aluminate, ferrite, portlandite, calcite, dolomite, quartz, gypsum, bassanite...0.9(1) 1.1(1) – Anhydrite – – – 0.4(1) – – – Portlandite – – 0.5(1) – – – 2.0(1) Jarosite – – – – – –...3(2) 5.2(1) – 0.6(1) – Anhydrite – – – – – – – Portlandite – 4.0(1) – – – – 10.9(1) Jarosite – – – – 1.8(1)...1.3(1) – – – – Anhydrite – – – 0.3(1) – – – Portlandite – 0.8(1) – – – – 1.9(1) Jarosite – – – – – – |  | | Journal (article/letter/editorial) | | corundum cor Al2O3 diaspore dia AlOOH lime lm CaO portlandite prt Ca(OH)2 zoisite zo Ca2Al3Si3O12(OH) clinozoisite...quartz and coesite. Lawsonite, diaspore, and portlandite are chemically hydrous forms of anorthite, corundum...CASH system: the elastic moduli of diaspore, portlandite, hibschite are smaller than the chemically related... Mineralogical Society of America, Chantilly, Virginia. Every, A.G. (1980) General closed-form expressions... Mineralogical Society of America, Chantilly, Virginia. Grevel, K.D., Nowlan, E.U., Fasshauer, D.W., |  | Waeselmann, Naëmi, Brown, J. Michael, Angel, Ross J., Ross, Nancy, Zhao, Jing, Kaminsky, Werner (2016) The elastic tensor of monoclinic alkali feldspars. American Mineralogist, 101 (5) 1228-1231 doi:10.2138/am-2016-5583 | Journal (article/letter/editorial) | | Department of Geosciences, Virginia Tech, 4044 Derring Hall (0420), Blacksburg, Virginia 24061, U.S.A. 4 Department...same samples at high pressures were measured at Virginia Tech (N.L. Ross, personal communication) by single-crystal...micas (e.g., McNeil and Grimsditch 1993) or portlandite (Speziale et al. 2008). In all samples, the longitudinal... Mineralogical Society of America, Chantilly, Virginia. McNeil, L.E., and Grimsditch, M. (1993) Elastic...(2008) Determination of the elastic constants of portlandite by Brillouin spectroscopy. Cement and Concrete |  | | Journal (issue) | | 1996 ISSN 1323-7640 Page Feature Articles: Portlandite and other recent mineral discoveries in the granites...of interesting mineral discoveries in the western USA. FRANCIS COLLECTION WEB SITES The Mineralogical...collecting has unearthed the rare calcium hydroxide portlandite, a silver iodide mineral and several more rare...minerals found in the three quarries. Ca(OH)2 PORTLANDITE A pale grey chert-like mass, measuring about...calcium hydroxide, portlandite. Thin quartz/ calcite veinlets cut the portlandite. Figure 1: Locality |  | | Journal (article/letter/editorial) | | from an industrial site located in the southeastern USA was subjected to inorganic phosphate (Pi) treatments...doi.org/10.1016/j.apgeochem.2012.10.011 In the USA, As-based compounds have been used for several purposes...areas of the USA (Welch et al., 2000). Several industrial sites in the southeastern USA which received...from an industrial site located in the southeastern USA was subjected to a Ca–Pi treatment. The objective...located near the Gulf Coast in the southeastern USA. The soil had developed from Quaternary undifferentiated |  | | Journal (article/letter/editorial) | | 404 Israel Hartrurim: bayerite, ettringite, portlandite, 723 West Pakistan Teri Toi river, Kohat district:...United States Amelia County, Virginia: albite, 581 Bedford County, Virginia: chevkinite, perrierite, 42...Globe, Arizona: ch.rysotile, 467 Goose Creek, Virginia: diabantite, 404 Hartford County, Maryland: sheridanite |  | | Journal (article/letter/editorial) | | added to refuse at a preparation plant in West Virginia. 1199 I. Doye, J. Duchesne / Applied Geochemistry...the water-reacted CKD sample, the lines of the portlandite and ettringite phases increased substantially...former the conversion of all the initial lime to portlandite. All lines for the soluble phases sylvite and...principally calcite (CaCO3), quartz (SiO2), portlandite (Ca(OH)2), with some lime (CaO), arcanite 1202...for a pH of 12.4 (saturation with respect to portlandite). The slightly higher observed pH is due to the |  | Macías, Francisco, Caraballo, Manuel A., Rötting, Tobias S., Pérez-López, Rafael, Nieto, José Miguel, Ayora, Carlos (2012) From highly polluted Zn-rich acid mine drainage to non-metallic waters: Implementation of a multi-step alkaline passive treatment system to remediate metal pollution. Science of The Total Environment, 433. 323-330 doi:10.1016/j.scitotenv.2012.06.084 | Journal (article/letter/editorial) | | Spain Department of Geosciences, Virginia Tech, Blacksburg, VA 24061, USA c Department of Geotechnical Engineering... ferroan magnesite, periclase, dolomite and portlandite as the main minerals detected. Gypsum was the... Reaction log K Type of reaction Brucite Portlandite Gypsum Hydrozincite β-Zn(OH)2 Manganite 0.2...gypsum, manganite, hydrozincite, β-Zn(OH)2 and portlandite (B). Symbols indicate experimental data (real)...bioreactor: a case study from the Illinois coal basin USA. Appl Geochem 2011;26:162–6. Bigham JM, Nordstrom |  | Le Godec, Y., Dove, M. T., Francis, D. J., Kohn, S. C., Marshall, W. G., Pawley, A. R., Price, G. D., Redfern, S. A. T., Rhodes, N., Ross, N. L., Schofield, P. F., Schooneveld, E., Syfosse, G., Tucker, M. G., Welch, M. D. (2001) Neutron diffraction at simultaneous high temperatures and pressures, with measurement of temperature by neutron radiography. Mineralogical Magazine, 65 (6) 737-748 doi:10.1180/0026461016560005 | Journal (article/letter/editorial) | | Geological Sciences, Virginia Tech, 4044 Derring Hall, Blacksburg, VA 24061, USA DOI: 10.1180/0026461016560005...brucite (Parise et al., 1993; Catti et al., 1995), portlandite (Pavese et al., 1997), FeS (Marshall et al.,...and Hull, S. (1997) P-V equation of state of portlandite, Ca(OH)2, from powder neutron diffraction data |  | Kyono, Atsushi, Kato, Masato, Sano-Furukawa, Asami, Machida, Shin-Ichi, Hattori, Takanori (2019) Crystal structure change of katoite, Ca3Al2(O4D4)3, with temperature at high pressure. Physics and Chemistry of Minerals, 46 (5) 459-469 doi:10.1007/s00269-018-1016-4 | Journal (article/letter/editorial) | | reappear together with those of corundum Al2O3 and portlandite Ca(OH)2. At 8 GPa, the volume of C aO8 dodecahedron... together with those of corundum Al2O3 and portlandite Ca(OH)2. Figure 2 displays EPMA elemental maps...During cooling and decompression, corundum, portlandite, and a small amount of katoite were crystallized...decomposes to mayenite Ca12Al14O32(OH)·mH2O and portlandite Ca(OH)2 at around 300 °C through the dehydration... Mineralogical Society of America, Chantilly, Virginia, pp 169–191 Beran A, Langer K, Andrut M (1993) |  | Kolodny, Yehoshua, Burg, Avihu, Geller, Yona I., Halicz, Ludwik, Zakon, Yevgeni (2014) Veins in the combusted metamorphic rocks, Israel; Weathering or a retrograde event?. Chemical Geology, 385. 140-155 doi:10.1016/j.chemgeo.2014.07.006 | Journal (article/letter/editorial) | | Tobermorite Jennite Ettringite Bentorite Thaumasite Portlandite Volkonskoite Aragonite Vaterite Analcime Apophyllite...cement-like minerals such as ettringite and portlandite (Alexander et al., 1992; Khoury et al., 1992;..., 2011; Khoury and Al-Zoubi, 2014). Natural portlandite (Ca(OH)2 ) was found, but only rarely in the...occurred long after the retrograde stage when portlandite was crystallized “by interaction of hot steam...has been suggested that vaterite forms from Portlandite and its formation is enhanced by the presence |  | Jackson, M. D., Chae, S. R., Mulcahy, S. R., Meral, C., Taylor, R., Li, P., Emwas, A.-H., Moon, J., Yoon, S., Vola, G., Wenk, H.-R., Monteiro, P. J. M. (2013) Unlocking the secrets of Al-tobermorite in Roman seawater concrete. American Mineralogist, 98 (10) 1669-1687 doi:10.2138/am.2013.4484 | Journal (article/letter/editorial) | | likely the result of saturation with respect to portlandite at pH > 12.7 and high Al3+ mobility (Massazza...temperature increase from the sudden exothermic portlandite reaction, and heat evolved during hydration of...kg/m3, results from hydration of quicklime to portlandite and the additional weight of the binding pozzolanic...produce portlandite, CaO+H2O → Ca(OH)2 (Hassibi 1999; Moropoulou et al. 2001). Reaction of portlandite with...the few relict lime clasts retained traces of portlandite (Jackson et al. 2012). The concrete mix used |  | | Journal (article/letter/editorial) | | related minerals, xonotlite, hydrogrossular, portlandite, calcite, and thomsonite. Some of the minerals...significant, have been recorded. A green spinel from Virginia in which F%03 is 10.35 ~ and FeO 24.53 % was reported...17-156]. WATSO~ (T. L.), 1925. Hoegbomite from Virginia. Amer. Min., vol. 10, pp. 1-9 [M.A. 2-567]. - |  | | Journal (article/letter/editorial) | | selenium.(palache)..128.203 Natta,G.. 35 Nelson Co., Virginia, minerals and mineral relations of. (Ross). ....(Gruner). 233 Phemister,J......... Roberts, J. K. Virginia stauroPhiladelphia Mineralogical So549 l i t e...m b o l s f o r .( S o l l e r ) .. . . . 35 Portlandite. (Tilley) section mineralogY. [Book 232 Pough...of, and their collapse by dehydration. (Gruner) Virginia staurolites as gems. (Roberts).. Voelckerite.OpticaI |  | | Journal (article/letter/editorial) | | America and the Geochemical Society, Chantilly, Virginia, USA. Oskierski, H.C., Dlugogorski, B.Z. and Jacobsen...Rodriguez-Navarro, C. (2013) Dissolution and carbonation of portlandite (Ca(OH)2) single crystals. Environmental Science...America and the Geochemical Society, Chantilly, Virginia, USA. Seifritz, W. (1990) CO2 disposal by means of |  | | Journal (article/letter/editorial) | | Named from the neighbouring town of Galax in Virginia, which itself is named from the local plant galax...porcelainjasper) of J. T. A. Peithner, 1794. Portlandite. C. E. Tilley, 1933. Min. Mag., vol. 23, p. 419...Uranothorite, (U,Th)O2. Galaxite, MnAl204. HYDROXIDES. Portlandite, Ca(OH)2. Hydrocalumite, 4CaO.A120~.I2H~O. PHOSPHATES |  | | Journal (article/letter/editorial) | | Caceres, Spain, montebrasite, 414. Amelia County, Virginia, albite, I56; - - , anal., d2o i, 489. Amoibite...338. BRETT (N. H.), Thermal decomposition of portlandite, 244. Bridal Veil Falls, Raglan, New Zealand...Cygnet, Tasmania, orthoclase, anal., d2oi, 489. Portlandite, synthetic, thermal decomposition, 244, 250....F content, 717. Topotaxy in decomposition of portlandite, 244, 250. Torrington, New South Wales, cobaltite |  | Friedrich, A., Wilson, D. J., Haussühl, E., Winkler, B., Morgenroth, W., Refson, K., Milman, V. (2007) High-pressure properties of diaspore, AlO(OH) Physics and Chemistry of Minerals, 34 (3) 145-157 doi:10.1007/s00269-006-0135-5 | Journal (article/letter/editorial) | | cm–1 (Szalay et al. 2002). Furthermore, for portlandite, the effect of pressure on the anharmonic coefficient...Angel RJ (2001) EOS-FIT, version 5.2. Virginia Tech, Blacksburg, USA Angel RJ (2004) Absorption corrections...Washington, Geophysical Laboratory, Washington, DC, USA Finger LW, King HE (1978) A revised method of operation...Pressure-dependent anharmonic coefficient of OH in portlandite by NIR-IR spectroscopy with DAC. J Miner Petrol |  | | Journal (article/letter/editorial) | | Elementen des Pektolithes yon Paterson, New Jersey, USA, lassen sich fiir diese Koordinaten folgende Gr6Ben...C. W. _F. T., 1963: Thermal decomposition of portlandite and xonotlite to high pressures and temperatures...t925: Ar~ occurence of xonotlite at Leesburg, Virginia. Amer. Min. 10, 12--13. Sumin, N. G., 1952: Xonotlite |  | | Journal (article/letter/editorial) | | Stafford (Stafford County), Connecticut; in southern Virginia; in Stokes and Burke counties, North Carolina;...Barbertonite Brucite Hydrotalcite Manasseite Portlandite P yroaurite Pyrochroite Sassolite Sjogrenite |  | | Journal (article/letter/editorial) | | Department of Environmental Sciences, University of Virginia, Charlottesville, VA 22903, U.S.A. L. K. Kauranne...Mining-related acid drainage, Pinal Creek, Arizona, USA 67-80 Se in surface water and biota, Kendrick Reclamation...alluvium 633-642 Skam fluids, Empire Mine, New Mexico, USA 9-36 Surface charge of colloidal quartz and hematite...Ca-Na-CI brines in Silurian strata, Michigan Basin, USA 507-524 CI stable isotopes in Michigan Basin formation...aquifer, Kentucky, USA 189-204 Radionuclides in groundwater, Carson River Basin, USA 447'471 Regional confined |  | Clark, A. M., Smith, D. A., Symes, R. F., Tandy, P. C., Hart, A. D. (1995) Catalogue of Type Mineral Specimens in the Natural History Museum, London - With an appendix listing mineral species and varieties originally described from the British Isles. Natural History Museum, London. | Book | | History Museum specimen is from Terlingua, Texas, USA, and was used for the determination of the mineral's...00135 Green River Fonnation, Uintah Co., Utah, USA A. Pabst, P.A. Estep, E.J. Dwornik, R.B. Finkelman...1980, 00532 Christmas Mine, Gila Co., Arizona, USA F.P. Cesbron & S.A. Williams (1980) Min. Mag. 43...1957, 00357 Tintic Standard mine, Dividend, Utah, USA W.T. Schaller (1923) J. Washington Acad. Sci. 13...BM 1967,00321 Franklin, Sussex Co., New Jersey, USA M.L. Smith & C. Frondel (1968) Min. Mag. 36, p. 893 |  | | Book | | Hole Soils Lab, University of Wisconsin-Madison, USA Alex B. McBratney, Faculty of Agriculture, Food &...Depa1tment of Geology Wayne State University Detrott, MI USA ISSN 2352-4774 Progress in Soil Science ISBN 978-3-319-54330-7...(Department of Soil and Crop Environmental Sciences, Virginia Polytechnic Institute and State University); Russell...and friend Dr. W. Lee Daniels. Detroit, Michigan USA Jeffrey Howard Contents 1 The Nature and Significance...Jefferson excavated a Native American burial mound in Virginia. Early scientific (stratigraphic) excavations |
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