Francisco Javier López-Moro- PhD
- Tenured scientist at Instituto Geológico y Minero de España
Francisco Javier López-Moro
- PhD
- Tenured scientist at Instituto Geológico y Minero de España
About
115
Publications
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Introduction
Current institution
Additional affiliations
April 2007 - July 2007
March 2003 - June 2003
May 2000 - January 2021
Publications
Publications (115)
Highlights
► Constant mass, constant volume or immobile elements are utilized as reference frames. ► A reliable selection of immobile elements is achieved for mass-balance modeling. ► Immobile element selection is carried out from clusters of slopes or volume factors. ► Graphical and statistical methods are used to verify the immobile element selec...
The Penouta peraluminous low-phosphorous granite is the most important low-grade, high-tonnage Sn-Ta-Nb-bearing albite granite from the Iberian Massif. A sheet or laccolith shape, instead of a stock, is inferred for the Penouta granite, maybe in relation with the low viscosity and high mobility of a fluorine-bearing melt. Subhorizontal lateral exte...
We study the causes of Mg-Cr-Ti-V-P-MREE enrichment in a 134 m thick mafic sill emplaced in a single magma pulse. Whole-rock chemistry indicates that TiO2 (up to 5.51 wt%) and P2O5 (up to 1.60 wt%) enrichment occurred in a closed system. Immiscibility processes during magmatic crystallization and interaction with late fluids seem to have played lit...
![(A) Schematic map of the Variscan orogen in Europe (based on [66]),...](publication/378546915/figure/fig1/AS:11431281418293585@1746148564613/A-Schematic-map-of-the-Variscan-orogen-in-Europe-based-on-66-including-main-RMGs_Q320.jpg)
![Classification diagrams. (A) Diagram of [105] applied to Iberian rare...](publication/378546915/figure/fig3/AS:11431281418293589@1746148569281/Classification-diagrams-A-Diagram-of-105-applied-to-Iberian-rare-metal-granites-B_Q320.jpg)
![Evolution of Nb/Ta ratio as a function of Zr/Hf and Sn (from [107]).](publication/378546915/figure/fig5/AS:11431281418255673@1746148573207/Evolution-of-Nb-Ta-ratio-as-a-function-of-Zr-Hf-and-Sn-from-107_Q320.jpg)
The intensive variables, geochemical, mineralogical, and petrogenetic constraints of the Iberian peraluminous rare metal granites (RMGs), many of them unknown, are presented. The mineral chemistry of ore and gangue minerals, whole rock analyses, geothermobarometry, melt water and phosphorus contents, mass balance, and Rayleigh modeling were perform...
The intensive variables, geochemical, mineralogical and petrogenetic constraints of the Iberian rare metal granites, many of them unknown, are presented. It allows to distinguish two main granitic types with contrasting characteristics: Nb-Ta-rich granites and Nb-Ta-poor granites. The former have lower emplacement temperatures, higher water content...
PROCESSES is a program for quantifying magmatic and metasomatic processes using major and trace elements and isotopes. The program can model the main magmatic processes: crystal fractionation (Rayleigh fractionation, equilibrium, and in situ crystallization), assimilation fractional crystallization (AFC and ABLF), magma mixing (two or three end mem...
PROCESSES is a program for quantifying magmatic and metasomatic processes using major and trace elements and isotopes. The program can model the main magmatic processes: crystal fractionation (Rayleigh fractionation, equilibrium, and in situ crystallization), assimilation fractional crystallization (AFC and ABLF), magma mixing (two or three end mem...
PROCESSES is a program for quantifying magmatic and metasomatic processes using major and trace elements and isotopes. The program can model the main magmatic processes: crystal fractionation (Rayleigh fractionation, equilibrium, and in situ crystallization), assimilation fractional crystallization (AFC and ABLF), magma mixing (two or three end mem...
METALESCRITICOS is presented, a database that allows the processing of geochemical and mineralogical data
normally used by petrologists and mineralogists in their daily work, especially those working on granites and rare
metal granites. Its ease of use and the range of functions and calculations it performs, some of which are tedious
and error-pron...
Se realiza un estudio cartográfico, geológico y sobre la evolución de las técnicas de cantería, llevado a cabo en cinco zonas graníticas de Ávila (Cardeñosa, Mingorría, La Colilla, La Alamedilla del Berrocal y El Calvario). En todas ellas se ha constatado una alta concentración de canteras antiguas de los seis tipos graníticos que aparecen en los m...
Se proponen cinco itinerarios geoturísticos con puntos de interés geológico, canteril y paisajístico en las zonas de canteras históricas de Cardeñosa, Mingorría, La Colilla, Alamedilla del Berrocal y El Calvario, que surtieron de piedra granítica a la ciudad de Ávila para la construcción de sus monumentos, desde la Edad Media hasta el siglo pasado....
Here, you can find some movies explaining how the spreadsheet works
The strategic importance of tantalum and its scarcity in Europe makes its recovery from low grade deposits and tailings interesting. In Penouta, the contents of Ta and Sn in old tailings from an Sn mine are of economic interest. Due to the relatively low grade of Ta of around 100 ppm, a detailed study of the mineralogy and liberation conditions is...
The scheelite skarn from Los Santos and the W-Au veins from El Cabaco district, located in the Spanish Central System
Batholith (SCSB), are some of the best-known tungsten ore deposits in Spain. Uraninite is an accessory mineral in both
deposits, which underwent several hydrothermal flow events. Chemical and textural characteristics as well as elec...
Due to an unfortunate oversight some mistakes occurred:
Mineralization related to the post-collisional reorganization in Iberia occurs along strike-slip shear zones (Sn, Au, ± U), in extremely differentiated leucogranites and pegmatites (Sn, Nb, Ta, Be, Li), in skarns (W, ± Au, ± U), and in quartz-veins with greisen (W, Sn, ± Au, ± U). Episyenites/albitites with uraninite mineralization in strike-slip s...
Granite bound tin mineralization typically is seen as the result of extreme magmatic fractionation and late exsolution of magmatic fluids. Mineralization, however, also could be obtained at considerably less fractionation if initial melts already had enhanced Sn contents. We present chemical data and results from phase diagram modeling that illustr...
Se ha estudiado la procedencia del material pétreo de doce molinos de diferentes yacimientos cogotenses de la Cuenca del Duero. Utilizando una marcha metodológica previa, se alcanza una caracterización petrográfica, mineralógica y geoquímica del material, incluyendo el tratamiento de elementos traza mediante diagramas de normalización y comparación...
The Penouta Sn-Ta deposit, in the northwest of Spain, is a greisenized granitic cupola where Ta minerals occur mainly as disseminations in a leucogranite body intruded in Precambrian–Lower Cambrian gneisses and mica-schists. This leucogranite is a medium- to fine-grained inequigranular rock consisting mainly of quartz, albite, K-feldspar and muscov...
In this study, we report U–Pb Laser Ablation ICP-MS zircon and ID-TIMS monazite ages for peraluminous granitoid plutons (biotite ± muscovite ± cordierite ± sillimanite) in the Tormes Dome, one of the gneiss-cored domes located in the Central Iberian Zone of the Variscan belt of northern Spain. Textural domains in zircon, interpreted to represent th...
Basic to intermediate high-K, high-Mg mantle-derived rocks occur throughout the Iberian Massif and are particularly important in the Tormes Dome, where vaugnerites form several stocks and small plutons. One of the largest and geochemically most variable among these plutons is the Calzadilla pluton in the Tormes Dome that crystallized at 318 ± 1.4Ma...
The subsurface sedimentary succession of the Iberian Trough, Spain was examined using geophysical t echniques (analogue seismic profiles) and inverse distance weighted (IDW) interpolation algorithm implemented in a gvGIS open source software. The results showed that the Late Cretaceous succession is divided into two depositional sequences: DS1 (La...
The Sn-Ta-Nb Penouta granite is a highly evolved rare-metal post-kinematic leucogranite located in north-western Spain, which was intermittently mined from Roman times until 1985, when falling metal prices led to the closure of most mines in the country.
The occurrence of hand grindstones at the Cogotas I archaeological sites is considered to be a common feature. Given that a distant-provenance raw material is frequently involved, determination of its source is a basic factor in the search for a better understanding of resource management and for any Political Economy approach. To progress in these...
Itinerario del Geolodía Salamanca 2015: es una iniciativa de divulgación de la geología relacionada con la profesión del geólogo a través de una de sus facetas más atrayente para el público en general, las excursiones de campo. Geolodía 15-Salamanca es una jornada que abre la puerta de entrada al laboratorio habitual de los geólogos: la naturaleza....
The Upper Cretaceous succession of the Leonese Area (NW Spain) comprises mixed clastic and carbonate sediments. This succession is divided into two lithostratigraphic units, the Voznuevo Member and the Boñar Formation, which represent fluvial, shoreface, intertidal, subtidal and open-shelf sedimentary environments. Regional seismic interpretation a...
This work focuses on the influence of Cenozoic volcanism of the Campo de Calatrava volcanic field on the sedimentation of two small continental basins in Spain (Argamasilla and Calzada-Moral basins). The volcanism in this area was mainly monogenetic, according to the small-volume volcanic edifices of scoria cones that were generated and the occurre...
One of the main events linked to orogenic collapse in collisional belts is the generation of crustal melts that cool to form leucogranites, whose crystallisation ages are best constrained by U-Pb dating of magmatic zircon. However, a common problem in dating these rocks is the abundance of xenocrystic zircon inherited from the source rocks or assim...
The goal of this work was first to establish the relationships between the PSV values and the microstructural and mineralogical features of the aggregates and surface micro-roughness, and then to establish the behavioural differences between natural and artificial aggregates. The results obtained indicate that the surface micro-roughness and the di...
The Villalcampo Shear Zone (around 307 Ma) shows second-order shear zones (420–390 °C) with gold ore bodies hosted by episyenites, which consist of albite episyenites (albitites) and albite-Kfs episyenites, both types with different contents in sulphides and gold. Mass transfer modelling supports higher fluid/rock ratios in albitites than in albite...
The goal of this work was first to establish the relationships between the PSV values and the microstructural and mineralogical features of the aggregates and surface micro-roughness, and then to establish the behavioural differences between natural and artificial aggregates. The results obtained indicate that the surface micro-roughness and the di...
La jornada de divulgación de Geolodía 12 en Zamora tiene como objetivo fundamental
divulgar la geología de la provincia de Zamora y mostrar algunas de sus aplicaciones
en la Conservación del Patrimonio Monumental de la ciudad. La documentación
científica utilizada se basa en un proyecto de investigación (2008-2010) financiado por
la Junta de Castil...
Tutorial of the OPTIMASBA code published in Computers & Geosciences
We study the volcaniclastic lithofacies interbedded between siliciclastic and carbonate sediments of Cenozoic-Quaternary age
(8.7 Ma to 7,000 BP) in Argamasilla and Calzada-Moral basins (Central Spain). The siliciclastic and carbonate deposits correspond
to fluvio-lacustrine sedimentary environments. The volcanic materials consist of primary and re...
The Tormes dome consists of S-type granites that intruded into Ordovician augen gneisses and Neoproterozoic–Lower Cambrian metapelites/metagreywackes at different extents of migmatization. S-type granites are mainly equigranular two-mica granites, occurring as: (1) enclave-laden subvertical feeder dykes, (2) small external sill-like bodies with siz...
Hay ciudades como París o Pontevedra que muestran una gran uniformidad en el uso de los
materiales pétreos; otras, en cambio, como Milán o Roma, se caracterizan por su variedad. Podría resultar
sorprendente afirmar que Salamanca se encuentra en el segundo grupo cuando es bien sabido que su
“piedra dorada” impregna la ciudad entera, pero la variedad...
The “Arribes del Duero” (Western of Zamora and Salamanca Provinces, Spain) and their opposite portuguese area (Eastern of the Tras-os-Montes and Alto Douro Provinces) are located geologically between the Morais allochthonous complex (Portugal) and the “Tormes Dome” in Spain. It’s a 2000 Km region with a high geodiversity, and with geomorphological...
A lithological study of the passage graves of the Salamanca peneplain has been carried out, considering 15 monuments and about 130 megalithic blocks. The weights and dimensions of the megaliths have been estimated, as well as the nature of the rocks used for the construction of both chambers and corridors. Six rock types can be distinguished, with...
Evidence for the nature of contaminants of Deccan Traps magmas may be provided by crustal xenoliths in lamprophyre and tholeiitic dykes that intruded the Deccan lava pile towards the end of volcanic activity. The potential contaminants are represented by xenoliths that include mafic (plagioclase-poor) granulites and felsic (plagioclase-rich) granul...
A Silurian/Ordovician extensional event in the southernmost sectors of the Central Iberian Zone is inferred from the Sm/Nd isochron obtained (436 ± 17 Ma) after the diabase sills from the La Codosera syncline. From the geochemical and mineralogical points of view, the diabase sills are subalkaline and range between high-Mg tholeiite diabases to tho...
The innermost domain of the autochthon of the Iberian Massif (Central Iberian Zone) consists of Upper Proterozoic-Lower Cambrian metasedimentary rocks and Early Paleozoic augen gneisses. The former were intruded by mafic magmas as small bodies that later became amphibolites under Variscan metamorphism, gabbro-diabasic textures being sometimes well...
The aim of this work is to establish the original quarries used to construct the Roman bridge in Salamanca (Spain). Nineteen granite-type samples from the bridge were obtained. For comparison, 12 samples were taken from eight different quarries, where the original stones were probably exploited. The study is based on element chemical analysis for m...
In the La Codosera syncline diabase sills with unusual size in the Spanish territory (kilometric lenght and hectometric width) are interleaved
with supra-Ordovician metasediments. The large size of these bodies and their blackish colour are positive factors, thinking about
their exploitation as ornamental rock. A systematic study of the potentialit...
In the La Codosera syncline diabase sills with unusual size in the Spanish territory (kilometric lenght and hectometric width) are interleaved with supra-Ordovician metasediments. The large size of these bodies and their blackish colour are positive factors, thinking about their exploitation as ornamental rock. A systematic study of the potentialit...
In the Iberian Massif, rocks of the K-rich plutonic series are not abundant, but towards internal parts of the belt represented by the Central Iberian Zone there are some sectors where shoshonitic plutonism occurs over broad areas. One of these areas is the anatectic Tormes Dome, encompassing two similar studied plutons (Pereruela and Vitigudino)....
Questions
Questions (4)
I am interested in this texture that we find in Spanish rare-metal albite granites, e.g. the Penouta granite.
For geothermal pourposes I am researching waters related to Cretaceous limestone-dolostomes and sandstones not too far of an inverse fault. The temperature at surface conditions is of 19 ºC (water for drill after 24 hours of pumping) that is quasi equal at the temperature estimated using the local geotherm, but I get a reservoir temperatura of 39 ºC using the silica-quart geothermomer. The Saturation index of quartz is oversaturated =0.35.
Both methods are expensive and before doing
I'd like to know if there is a software to estimate the grade of an element by means of petrographic microscope avoiding tedious and time-consuming modal analysis.
