A5102977419- Clay minerals and soil interactions
- Calcium Carbonate Crystallization and Inhibition
- Geochemistry and Geologic Mapping
- Minerals Flotation and Separation Techniques
- Geological and Geochemical Analysis
- Soil and Unsaturated Flow
- Iron oxide chemistry and applications
- Mineralogy and Gemology Studies
- Mine drainage and remediation techniques
- Mineral Processing and Grinding
- Metal Extraction and Bioleaching
- Paleontology and Stratigraphy of Fossils
- Geological and Geophysical Studies Worldwide
- Radioactivity and Radon Measurements
- Horticultural and Viticultural Research
- Tailings Management and Properties
- Cephalopods and Marine Biology
- Geomagnetism and Paleomagnetism Studies
- Therapeutic Uses of Natural Elements
- Radioactive element chemistry and processing
- Geological and Tectonic Studies in Latin America
- Hygrothermal properties of building materials
- Competitive and Knowledge Intelligence
- Digital Radiography and Breast Imaging
- Wine Industry and Tourism
Universidad de Salamanca
2019-2025
International Society for Optics and Photonics
2019
Instituto Andaluz de Ciencias de la Tierra
2016-2018
University of Concepción
2018
Universidad de Granada
2010-2017
Consejo Superior de Investigaciones Científicas
2015-2016
Universidad Complutense de Madrid
2011-2015
Karlsruhe Institute of Technology
2015
Instituto de Geociencias
2012
Abstract Bottom-up self-assembly of simple molecular compounds is a prime pathway to complex materials with interesting structures and functions. Coupled reaction systems are known spontaneously produce highly ordered patterns, so far observed in soft matter. Here we show that similar phenomena can occur during silica-carbonate crystallization, the emerging order being preserved. The resulting materials, called silica biomorphs, exhibit non-crystallographic curved morphologies hierarchical...
Palygorskite is a mineral used in wide number of industrial sectors. Currently, there are hundreds studies which palygorskite part different nanocomposites and bionanocomposites. The surface properties essential for these applications, this work, an in-depth revision done, showing that the high variability found cannot be explained only by impurities or differences analysis conditions. To further deepen knowledge palygorskitic clays, comparative study group purity samples also performed, new...
The precipitation of calcium carbonate into alkaline silica gel produces concomitant polymorphic aragonite with biomorphic morphology and calcite crystalline dendrites.
The combination of mineralogical, geochemical, and spectroscopy data in the visible, near-infrared, shortwave infrared (VNIR-SWIR) wavelength ranges provides determination mining spectral signatures. These signatures enable identification classification geological materials present a specific mineral deposit. Beyond their use remote sensing studies focused on studied area, have broader applications exploration extraction processes. They provide rapid, cost-effective way to classify samples...
Mineralization studies on calcium sulfates when compared to those phosphates and carbonates are relatively rare despite the economic relevance of these sulfates. A series recent findings, however, have renewed interest in sulfate mineralization. These studies, similar phosphates, shown a richer than previously thought scenario especially at nanoscale. Here, we intentionally use confinement reactors with fast exchange rates (organically/inorganically functionalized reverse micelles) rapidly...
The growth of anhydrite (100) surface in contact with supersaturated aqueous solutions (βanh = 1–3.6) under low hydrothermal conditions (T 60–120 °C) has been studied by use a atomic force microscope (HAFM). Our observations show that on this occurs lateral spreading monomolecular layers (3.5 Å height) and is highly anisotropic, [001] [001̅] alternating as fast slow directions successive monolayers. This anisotropic evidence strong structural control, which becomes less intense temperature...
The sorption of dissolved inorganic pollutants into the structure minerals is an important process that controls mobility and fate these in Earth’s crust. It also modifies surface composition host mineral, affecting its crystallization kinetics. Here, we investigate effect hexavalent chromium, Cr(VI), on nucleation growth gypsum by conducting two types experiments: (i) situ atomic force microscopy (AFM) observations {010} surfaces presence Cr(VI) (ii) precipitation experiments mixing aqueous...
Celestite crystals grow epitaxially on anhydrite surfaces that interact with aqueous solutions bearing Sr. Progressive polygonization and splitting during celestite growth drives to the development of striking crystal morphologies textures.
In situ observations of the growth anhydrite (100) surface in contact with supersaturated aqueous solutions under conditions within stability field this mineral (60-120 °C) were conducted using a hydrothermal atomic force microscope (HAFM). Advancement rates measured for [001] steps, most stable ones on surface. Isothermal data fit well to linear correlations between step advancement rate and supersaturation; activation energy is 73 ± 5 kJ/mol. This not significantly higher than energies...
The self-assembly of alkaline earth carbonates in the presence silica at high pH leads to a unique class composite materials displaying broad variety self-assembled superstructures with complex morphologies. A detailed understanding formation process these purely inorganic architectures is crucial for their implications context primitive life detection as well use synthesis advanced biomimetic materials. Recently, great efforts have been made gain insight into molecular mechanisms driving...
ACOLEP-MD (Architecture to COntrol LEarning Processes with Mobile Devices) is an architecture support monitoring of learning processes and allow the teacher spent more time pupils difficulties. This provides a mobile device be used by set applications manage data from students teacher's devices. Due Spanish government initiative providing each laptop, our proposal intended profit as much possible this equipment.
The mineralization of the Aramo Plateau is a carbonate-hosted deposit with major Cu-Co-Ni sulphides and arsenides minor precious metals. There are few studies on deposit, but according to Paniagua et al., (1988), it an epithermal evolutive sequence involving temperatures from 85ºC 170ºC whose hydrothermal systems were related distensive Late-Variscan tectonic activity in region. Weathering oxidation primary sulfides ore waste rock materials has resulted formation secondary...
<title>Abstract</title> The mining industry in Chile concentrates the northern part of country, mostly covered by desert landscapes, including Atacama Desert and its adjacent areas. Their arid semi-arid climates cause predominance eolian weathering on tailing surfaces. dust transported wind is a main factor metal contamination vast areas surrounding waste repositories. In this context, we studied with Brunauer-Emmett-Teller (BET) analysis microstructural characteristics tailings from Domeyko...