IR spectra of clay minerals

J Madejová, WP Gates, S Petit - Developments in clay science, 2017 - Elsevier
This chapter presents typical mid-IR (MIR) and near-IR (NIR) spectra of different clay mineral
families and discusses how basic information on crystal chemistry can be derived. MIR …

Mineralogical characterization and reactivity test of common clays suitable as supplementary cementitious material

M Maier, N Beuntner, KC Thienel - Applied Clay Science, 2021 - Elsevier
The most abundant clays in the northern hemisphere are dominated by 2: 1 clay minerals.
However, compared to kaolinite-rich clays, these common clays have been less addressed …

The influence of acid modification on the structure of montmorillonites and surface properties of bentonites

V Krupskaya, L Novikova, E Tyupina, P Belousov… - Applied Clay …, 2019 - Elsevier
Bentonites are often used as components of engineered barrier systems (EBS) for the
radioactive waste disposal and isolation of hazardous nuclear facilities. In this paper, we …

Evaluation of redox-active iron sites in smectites using middle and near infrared spectroscopy

A Neumann, S Petit, TB Hofstetter - Geochimica et Cosmochimica Acta, 2011 - Elsevier
Redox processes of structural Fe in clay minerals play an important role in biogeochemical
cycles and for the dynamics of contaminant transformation in soils and aquifers. Reactions of …

Chlorite, white mica and clay minerals as proximity indicators to ore in the shallow porphyry environment of Quebrada de la Mina deposit, Argentina

L Maydagán, M Franchini, A Impiccini, D Lentz… - Ore Geology …, 2018 - Elsevier
The mineralogy and chemical composition of mica-like phyllosilicates (> 2 µm) and clay
fraction (< 2 µm) of the shallow hydrothermal alteration zones of the Quebrada de la Mina …

[HTML][HTML] Vanadium mineralization at Los Chihuidos sediment-hosted Cu–V deposit, Neuquén Basin, Argentina: An approach to vanadium ore forming processes

AL Rainoldi, D Beaufort, MB Franchini, A Giusiano… - Geoscience …, 2024 - Elsevier
Abstract Vanadium mineralization at Los Chihuidos deposit of the Neuquén Basin is linked
to the development of a redox front system related to the inflow of hydrocarbons into the red …

Fourier transform infrared spectroscopy

S Petit, J Madejova - Developments in clay science, 2013 - Elsevier
Fourier transform infrared (FTIR) spectroscopy is a rapid, economical, easy, and non-
destructive technique. The IR spectrum of a clay mineral is sensitive to its chemical …

Near-infrared spectroscopy to estimate the chemical element concentration in soils and sediments in a rural catchment

G Naibo, R Ramon, G Pesini, JM Moura-Bueno… - Catena, 2022 - Elsevier
Monitoring the transfer of chemical elements from terrestrial to aquatic environments is
essential. To this end, it is necessary to develop fast and low-cost techniques to estimate the …

Highly variable content of fluorapatite-hosted CO32− in the Upper Cretaceous/Paleogene phosphorites (Morocco) and implications for paleodepositional conditions

J Aubineau, F Parat, A Elghali, O Raji, A Addou… - Chemical …, 2022 - Elsevier
Phosphorus (P) usually occurs as microcrystalline minerals of carbonate fluorapatite (CFA)
in sediments of upwelling-related areas. The Upper Cretaceous/Paleogene marine …

NIR contribution to the study of modified clay minerals

J Madejová, H Pálková - Developments in Clay Science, 2017 - Elsevier
Clay minerals are abundant, inexpensive and environmentally friendly materials with a huge
potential for diverse industrial and environmental applications. Their properties can be …