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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 the ASD 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 ASD 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 ASD 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.

Produits:
ASD TerraSpec Halo
Date:
April 11 2019
Langue:
English
XRD for the analyst Livre blanc

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).

Produits:
Empyrean range
Date:
March 23 2015
Langue:
English

This eBook explores several ways in which Malvern Panalytical’s technologies and expertise can assist pharmaceutical scientists in their quest to develop high quality, safe and effective products, and accelerate their speed to market.

Produits:
Gamme Mastersizer
Date:
April 15 2020
Langue:
English

Modern industrial processes rely on a growing range of sophisticated technologies to ensure the quality of materials and finished products. The more these systems become embedded, the heavier the reliance on their abilities to perform consistently and to deliver essential data for critical decision-making. And the greater the risk, should they fail to do so. Investing in technology solutions that are tried and trusted helps mitigate that risk, in the knowledge that they embody the accumulated experience and expertise of others and have a track record of dependable practical service. However, they must also align with current needs and have the capacity to accommodate evolving quality requirements. Mastersizer has long been one of the most trusted brands in particle sizing. Upholding this reputation, the industry-leading Mastersizer 3000 laser diffraction particle size analyzer has earned the confidence of thousands of users around the world who routinely rely on it. Please login or register to read more.

Produits:
Mastersizer 3000
Date:
October 22 2020
Langue:
English

If you are considering the purchase of a dynamic light scattering system, take note of these factors as you go through the selection process. Written specifications are not necessarily a guide to system performance, and can be misleading.

Produits:
Zetasizer APS
Date:
November 3 2009
Langue:
English

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