A5066796044- Geological and Geophysical Studies Worldwide
- Geological and Geochemical Analysis
- Archaeological and Geological Studies
- Geological and Tectonic Studies in Latin America
- Archaeological and Historical Studies
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- Geochemistry and Elemental Analysis
- Heavy metals in environment
- Historical Studies of Medieval Iberia
- Clay minerals and soil interactions
- Mineralogy and Gemology Studies
- Environmental and Ecological Studies
- Metal Extraction and Bioleaching
- Higher Education Teaching and Evaluation
- Environmental and Cultural Studies in Latin America and Beyond
- Radioactive element chemistry and processing
- Building materials and conservation
- Hydrocarbon exploration and reservoir analysis
- Mineral Processing and Grinding
- Mine drainage and remediation techniques
- Educational theories and practices
- Paleontology and Stratigraphy of Fossils
- Education and Teacher Training
- Advanced Statistical Methods and Models
Universidad de Granada
2007-2023
Instituto Andaluz de Ciencias de la Tierra
2000-2023
Consejo Superior de Investigaciones Científicas
2002-2009
A petrologic analysis of these banded fabrics from several carbonate-hosted sulfide deposits and their host rocks was carried out. All available evidence indicates that are cement-filled, sheet cavity networks in which the were replaced by ore-stage phases. These cavities appear to have been produced immediately prior to, or during, precipitation and, one instance, postdate onset stylolitization. The be fracturing solution enlargement. -from Authors
Within the framework of Sustainable Development Goals Agenda 2030, circular economy is being promoted as a means ensuring sustainable use resources and reduction in amount waste produced. The aim to reduce demand for often scarce raw materials through continuous reuse, recycling regeneration products. This paper explores carbon fibre from wind turbine blades an additive production new efficient bricks. Clay mixes with 0, 5 10 wt% were fired at three temperatures (800, 950 1100 °C) bricks...
Abstract The combination of structural, geochemical and palaeotopographic data proves to be an efficient tool understand fluid transfers in the crust. This study discriminates shallow deep reservoirs on both sides brittle–ductile transition under extensional regime points out role major transcurrent fault activity this palaeohydrogeological setting. Palaeofluids trapped quartz siderite–barite veins record transfer fluids metal solute species during Neogene exhumation Sierra Almagrera...
The epithermal gold-copper-bearing deposit of Palai-Islica, near Carboneras, in Almeria, southeastern Spain, is hosted by volcanic rocks Cabo de Gata -Cartagena belt (Betic Cordillera).Hydrothermal alteration occurs the sequence: propylitic, sericitic, argillic (extending over a surface area some 2.5 ן 1.7 km 2 ), and silicic.Mineralization, consisting quartz with sulfides (pyrite ± chalcopyrite other minor native gold), appears veins, stockworks layers.Results petrographic study gold...
The present study shows the existence of textural, mineralogical, microthermometric and isotopic data that evidences processes such as thermochemical sulfate reduction (TSR) are not typical features volcanic-hosted epithermal deposits formed at shallow submarine and/or subaerial environments. Geological evidence fluid inclusion temperature geochemistry suggest Mazarrón Zn–Pb–Cu–Ag–Fe deposit is a deposit. It hosted by dacites with different alteration halos: K–Ar dating illite from argillic...
In the Palai‐Islica deposit, in southeastern Spain, gold is found associated with sulfide mineralization (particularly Fe sulfides). Grains of Au‐Ag alloy (gold types A and B) occur pyrite mineralized veins, grains native (type C) are areas massive silicification at uppermost levels deposit. The content “invisible” various sulfides practically nil. Of all textural varieties studied, unzoned medium- to coarse-grained only one bearing gold. clear distinction can be established between three...
Sphalerite in the Au-Cu volcanic-hosted, Palai-Islica deposit appears three locations with differences chemistry, mainly Fe content: a) included pyrite (Fe: 0.49 -5.47 at.%) within quartz veins; b) disseminated or crustiform bands, also and c) hydrothermally altered volcanic rocks from deepest part of 0.28 -1.12 at.% -the only one which is cathodoluminescent).Disseminated-or crustifom band-sphalerite most abundant type, two varieties: dark 3.16 -8.66 light 0.08 -2.52 at.%).The former...
Abstract Au-Cu mineralization at Palai-Islica occurs as disseminations in massive silicified volcanic rocks and, more abundantly, sulphide-bearing quartz veins. The major ore minerals the deposit are pyrite ± chalcopyrite, sphalerite and galena there is a great variety of accessory minerals, including Au-Ag alloys native gold. Pyrite, most abundant sulphide, closely associated with Seven different types have been distinguished variable concentration trace elements. Among these, only one free...
ResumenEl depósito Santa Rosa (Mn-Ba) se encuentra localizado al SO del poblado de San Nicolás, sur la Península Concepción, Baja California Sur, México.Consiste en una veta-brecha óxidos manganeso 500 m longitud, expuesta afloramientos discontinuos, con rumbo preferente NNO-SSE e inclinaciones subverticales hacia el ENE.Se encajonada conglomerados miembro Los Volcanes, perteneciente a Formación Nicolás Plioceno.Su mineralización está formada mayoritariamente por estructuras bandeadas y...