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The white micas are a diverse group of common fine-grained phyllosilicate minerals that include the true micas paragonite, muscovite, and phengite, as well as the K-deficient mica, illite. This group often serves as a useful exploration vector as they provide an indicator of geothermal and geochemical conditions at the time of their formation. Using the Al-OH scalar reported by TerraSpec Halo mineral identifier it is possible to track geochemical conditions while the Illite Spectral Maturity (ISM) scalar (Doulblier et al. 2010) reported by Halo provides an indicator of thermal maturity. The white micas contained in the mineral library used by the TerraSpec Halo mineral identifier are organized by composition. The true white micas are represented by the potassium white micas muscovite and phengite, and the sodic white mica paragonite. The muscovite-phengite series is characterized by increasing substitution of Mg+2 or Fe+2 and Si+4 for Al+3. The illites are classified similarly. Thus, a shift in mineralogy from muscovite and/ or illite (labeled as K-Illite in the Halo mineral library) to paragonite and/or paragonitic illite (labeled as Na-Illite in the Halo mineral library) is indicative of increasingly sodic conditions. Similarly, a shift in mineralogy to phengite and/or phengitic illite (labeled as Mg-Illite in the Halo mineral library) is usually indicative of increasingly magnesium-rich conditions. The TerraSpec Halo mineral identifier is able to track geothermal gradients both by detecting mineralogy and through the reporting of the ISM scalar. With increasing metamorphic grade, smectites convert to illites, which then covert to muscovite (and other true micas). Within the illites, subtle geothermal trends are easily detected and mapped using the Halo’s ISM scalar which tracks the illite dehydration process as the illite converts to true mica.

Produkte:
ASD TerraSpec Halo
Datum:
April 11 2019
Sprache:
English
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XRD for the analyst White-Paper

As a (future) user of a Malvern Panalytical X-ray diffractometer you can perform almost all types of diffraction applications, depending on the configuration of your system. To get the best possible results out of your system, this book gives you an introduction to X-ray powder diffraction (XRPD or, mostly used, XRD) and provides helpful information. It gives a simple explanation of how a diffractometer works and how XRD analysis is done. This book is intended both for people new to the field of XRD analysis and for more experienced users to find new applications which might be helpful in daily work. This book avoids complex mathematical equations and understanding its contents only requires a basic knowledge of crystallography, mathematics and physics. It is not dedicated to specific diffractometer configurations or application areas, but aims to give a global overview of the various possibilities in XRD. Chapter 2 briefly explains XRD and its benefits. General application fields are presented. Chapter 3 gives an introduction to the physics and crystallography of XRD, while Chapter 4 describes how this is used for diffraction experiments. Chapter 5 explains the XRD data collection. This includes presentation of sample preparation and measurement procedures to get the best possible results. In Chapters 6-9 the procedures to perform qualitative and quantitative phase analysis are presented. Chapter 10 deals with non-ambient XRD and describes its methods and applications together with other techniques. Chapter 11 lists recommended literature for further information on XRD analysis. Since this book is intended to give an introduction to standard powder diffraction techniques, it does not cover other X-ray techniques like single crystal diffraction, high-resolution XRD of heteroepitaxial layers, or small-angle X-ray scattering (SAXS).

Produkte:
X'Pert3 Powder
Datum:
March 23 2015
Sprache:
English
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There are many sources of information that give a mathematical description of the terms used in light scattering. This paper gives a descriptive definition of these terms, with notes on their use in the context of Dynamic Light Scattering

Produkte:
Zetasizer Nano Linie
Datum:
June 9 2017
Sprache:
English
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The techniques of laser diffraction and automated particle imaging support the fast, cost-effective development of nasal spray products, simultaneously providing the data required for regulatory compliance. This paper examines their application.

Produkte:
Morphologi G3-ID
Datum:
May 10 2012
Sprache:
English
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Zweck dieses Leitfadens ist die Vermittlung der Grundlagen zu den wichtigsten Verfahren der Partikelcharakterisierung, die derzeit in Industrie und Forschung eingesetzt werden. Es werden keine Vorkenntnisse in der Theorie der Partikelcharakterisierung oder zu den dazu verwendeten Geräten vorausgesetzt..

Produkte:
Morphologi G3
Datum:
June 20 2012
Sprache:
German
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