The study of active and fossil hydrothermal systems shows clay minerals to be a
fundamental tool for the identification and characterization of hydrothermal alteration facies …

The presence of clays in hydrocarbon reservoirs challenges the producible amount of oil
and gas significantly. Therefore, this study reports a detailed quantitative characterization of …

The geothermal field of Bouillante (Guadeloupe, FWI) is a high-enthalpy hydrothermal
system emplaced in submarine volcanoclastic formations (hyaloclastites, scarce lava flows) …

Raman spectroscopy of fine-grained hydrothermal alteration minerals, and phyllosilicates in
particular, presents certain challenges. However, given the increasingly widespread …

The hydrothermal reactivity of the< 1 μm fraction, K-saturated SWy-2 Wyoming low-charge
montmorillonite was studied in the 250-400° C temperature range with reactions lasting …

The formation of clay minerals in volcanic successions follows various evolutionary trends,
the understanding of which is crucial for estimating the age of volcanism and the prospecting …

Hydrothermal alteration mineralogy in geothermal systems is commonly used to infer system
temperature and past fluid flow patterns. Infrared spectroscopy is particularly good at …

The nature of component layers of mixed-layer illite-smectite and their possible evolution in
the course of illitization have been debated since the 1960s. The present study is a new …

Sulphate, clay, silica and oxide-hydroxide minerals were identified by means of fieldwork,
XRD and SEM, both in the active and fossil zones of the Cerro Apacheta volcano (Cerro …

Episodic and localized illite mineralization is documented in the hydrothermally altered
Soultz-sous-Forêts granite (Upper Rhine Graben, France). Separated grain-size fractions of …