Download or read book Hydrothermal Atomic Force Microscopy Investigation of Barite Growth written by Sarah A. Jindra and published by . This book was released on 2017 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: To better understand the role of spectator ions in barite growth, the kinetics of step edge growth on barite (001) surfaces were studied under various salt solutions. Hydrothermal Atomic Force Microscopy (HAFM) was used to investigate the effect of background electrolytes (NaCl, NaBr and NaNO3) as a function of saturation index and ionic strength (I) on barite growth sourced at dislocations at 108° C. Results show that hillock morphology is affected by I, as well as type of anion, where the prevalence of steps aligned on the [010] direction is highest under Cl-. There is a modest increase in kinetic coefficient of 55-130% with a ten-fold increase in I for each salt. In comparing the kinetic coefficients of the salts at low ionic strength (0.01 M), there is a moderate difference, suggesting that the anion may play a role in barium attachment.

Download or read book Investigating Heterogeneous Nucleation of Barite Using Hydrothermal Atomic Force Microscopy and Optical Microscopy written by Ankita B. Gurav and published by . This book was released on 2020 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to develop a better understanding heterogeneous nucleation of barite, barite precipitation was studied under varying experimental parameters. Hydrothermal atomic force microscopy (HAFM) and optical microscopy were used to investigate the effect of change in temperature, supersaturation and varying ratios of ions on heterogeneous nucleation of barite. In the experiments conducted at higher temperatures, the particles thus nucleated were found to display characteristic hexagonal and rhomboidal shapes. In comparing results of particle densities among different ion ratios, there is evidence suggesting that barium to sulfate ratio plays a role of promoter. Wherein, the ratios with higher [Ba2+] concentration were found to show more nucleation occurring. Although, the HAFM cell was used for experimentation, optical microscopy turned out to be a more effective method for analysis of samples.

Download or read book Nucleation of Minerals Precursors Intermediates and Their Use in Materials Chemistry written by Denis Gebauer and published by MDPI. This book was released on 2018-08-09 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Nucleation of Minerals: Precursors, Intermediates and Their Use in Materials Chemistry" that was published in Minerals

Download or read book High Temperature Gas Solid Reactions in Earth and Planetary Processes written by Penelope King and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-03 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: High temperature gas-solid reactions are ubiquitous on planetary bodies, distributing chemical elements over a range of geologic settings and temperatures. This volume reviews the critical role gas-solid reactions play in early solar system formation, volcanism, metamorphism and industrial processes. The field evidence, experimental and theoretical approaches for examining gas-solid reaction are presented, building on advances in fields outside of Earth Sciences. Computational chemistry techniques are used to probe the nature of molecular clusters and solvation in volcanic vapors and mineral-gas reaction mechanisms. Specialised analytical methods for characterising solid reaction products are included since these reactions commonly form thin or dispersed films and metastable minerals. Finally, the volume contains rich field examples, laboratory experiments and thermodynamic modelling and kinetics of gas-solid reactions on Earth, Venus and beyond.

Download or read book Nanoscopic Approaches in Earth and Planetary Sciences written by G. Jordan and published by The Mineralogical Society of Great Britain and Ireland. This book was released on 2010-08-01 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: The properties of matter at extreme length scales can differ markedly from those at length scales accessible to human observation. Nanogeoscience is described here: analytical techniques ranging from atomic force microscopy, nanoscale SIMS, TEM and EELS, to recent developments in nano-scale resolution in synchrotron radiation.

Download or read book Water rock Interactions Ore Deposits and Environmental Geochemistry written by Roland Hellmann and published by . This book was released on 2002 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Referate written by Deutsche Gesellschaft für Kristallographie. Jahrestagung and published by . This book was released on 2009 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mineralogical and Textural Analysis of Barite rich Hydrothermal Chimneys from the Endeavor Segment of the Juan De Fuca Ridge written by Sara Christine Redding and published by . This book was released on 1992 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The American Journal of Science written by Mrs. Gambold and published by . This book was released on 2008 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Materials Science of Concrete VI written by Jan P. Skalny and published by Wiley-American Ceramic Society. This book was released on 2001-08-28 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers on phase composition and quantitative x-ray powder diffraction analysis of Portland cement and clinker; neutron diffraction and neutron scattering studies of cement; scanning probe microscopy: a new view of the mineral surface; the stereological and statistical properties of entrained air voids in concrete: a mathematical basis for air void system characterization; fresh concrete rheology: recent developments; early age behavior of cement-based materials; transport mechanisms and damage: current issues in permeation characteristics of concrete; the use of silica fume to control expansion due to alkali-aggregate reactivity in concrete: a review; delayed ettringite formation in concrete: recent developments and future directions; use of durability indexes to achieve durable cover concrete in reinforced concrete structures; and microfiller partial substitution for cement.

Download or read book Abstract Volume written by Geological Association of Canada. Meeting and published by . This book was released on 1998 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abstracts of Papers written by Geological Association of Canada. Meeting and published by . This book was released on 1998 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ion Partitioning in Ambient Temperature Aqueous Systems written by H. Stoll and published by The Mineralogical Society of Great Britain and Ireland. This book was released on 2010-11-15 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding in detail the ion partitioning in mineralwater interactions is of fundamental importance to geochemical studies and ultimately to society. The solid-solution properties of minerals are a significant part of the complexity, and also the importance, of these ion-partitioning reactions.

Download or read book Energy and Mass Transfer in Marine Hydrothermal Systems written by Peter Halbach and published by . This book was released on 2003 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological mineralogical Interactions written by Julie M. McIntosh and published by Nepean, Ont. : Mineralogical Association of Canada. This book was released on 1997 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Zeolites and Catalysis written by Jiri Cejka and published by John Wiley & Sons. This book was released on 2010-05-27 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt: This indispensable two-volume handbook covers everything on this hot research field. The first part deals with the synthesis, modification, characterization and application of catalytic active zeolites, while the second focuses on such reaction types as cracking, hydrocracking, isomerization, reforming and other industrially important topics. Edited by a highly experienced and internationally renowned team with chapters written by the "Who's Who" of zeolite research.

Download or read book Pelagic Barite written by Weiqi Yao and published by Cambridge University Press. This book was released on 2021-01-28 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reconstruction of ocean paleoproductivity and paleochemistry is paramount to understanding global biogeochemical cycles such as the carbon, oxygen and sulfur cycles and the responses of these cycles to changes in climate and tectonics. Paleo-reconstruction involves the application of various tracers that record seawater compositions, which in turn may be used to infer oceanic processes. Several important tracers are incorporated into pelagic barite, an authigenic mineral that forms in the water column. Here we summarize the utility of pelagic barite for the reconstruction of export production and as a recorder of seawater S, O, Sr, Ca and Ba.