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Francesco Secchi
University of Sassari
GeologyHydrothermal circulationGeochemistryPlutonPetrology
21Publications
5H-index
84Citations
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Publications 22
Newest
#1Ferdinando BosiH-Index: 24
#2Stefano Naitza (University of Cagliari)H-Index: 6
Last. Ulf Hålenius (Swedish Museum of Natural History)H-Index: 17
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Abstract An inclusive study of tourmaline, a well-known petrogenetic indicator, allowed the reconstruction of late-stage evolution of B-bearing Variscan granodioritic magmas in Sardinia batholith (Italy). Tourmaline samples from Mandrolisai igneous massif were chemically and structurally investigated by electron microprobe analysis, single-crystal X-ray diffraction, Mossbauer, infrared and optical absorption spectroscopy. Tourmaline aggregates occur both as large crystals displaying graphic text...
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#1Marilena MoroniH-Index: 1
Last. Francesco SecchiH-Index: 5
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We compare three poorly known, historical Ni–Co-bearing hydrothermal deposits in different geological settings in Italy: The Ni–Co–As–Sb–Au-bearing Arburese vein system (SW Sardinia), the Co–Ni–As-rich Usseglio vein system (Piedmont), and the small Cu–Ag–Co–Ni–Pb–Te–Se stockwork at Piazza (Liguria). These deposits share various (mineralogical, chemical, thermal, and stable isotopic) similarities to the Five Element Vein-type ores but only the first two were economic for Co–Ni. The Sardinian Ni-r...
1 CitationsSource
#1Stefano NaitzaH-Index: 6
#2G. De GiudiciH-Index: 11
Last. Francesco SecchiH-Index: 5
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#2Stefano NaitzaH-Index: 6
Last. Francesco SecchiH-Index: 5
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#1Ferdinando BosiH-Index: 24
#2Stefano Naitza (University of Cagliari)H-Index: 6
Last. Giovanni B. AndreozziH-Index: 24
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Tourmalines from the late-Variscan Arbus pluton (SW Sardinia) and its metamorphic aureole were structurally and chemically characterized by single-crystal X-ray diffraction, electron and nuclear microprobe analysis, Mossbauer, infrared and optical absorption spectroscopy, to elucidate their origin and relationships with the magmatic evolution during the pluton cooling stages. The Arbus pluton represents a peculiar shallow magmatic system, characterized by sekaninaite (Fe-cordierite)-bearing pera...
5 CitationsSource
#1Aida Maria ConteH-Index: 1
#2Stefano Cuccuru (University of Sassari)H-Index: 7
Last. Francesca CifelliH-Index: 19
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Abstract The post-collisional late Variscan magmatism of Sardinia-Corsica batholith attained a peak at about 290 Ma. In southern Sardinia, in the frontal part of the Variscan orogenic wedge, this magmatism is represented by three suites of granitoids, here defined as GS1, GS2 and GS3. GS1, GS2 and GS3 are slightly peraluminous and F-bearing granitoids; GS1 and GS3 granites show in addition a ferroan character, whereas GS2 rocks range from magnesian to ferroan, from granodiorites to leucogranites...
6 CitationsSource
1 Citations
#1Stefano Naitza (University of Cagliari)H-Index: 6
#2A. M. ConteH-Index: 13
Last. Francesca TecceH-Index: 12
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Abstract The characterisation of the late Variscan intrusion of Monte Linas (southern Sardinia) allowed to firstly study some Sn-bearing ores of this area and their relationships with the surrounding intrusives. The Monte Linas pluton was emplaced at ca. 290 Ma at a shallow crustal level between allochthonous units and the foreland of the Sardinian Variscan belt. The pluton emplaced in a post-collisional regime into a previously exhumed low-grade basement, forming a coarse-grained monzogranite t...
7 CitationsSource
#1Stefano Cuccuru (University of Sassari)H-Index: 7
#2Stefano Naitza (University of Cagliari)H-Index: 6
Last. Giacomo Oggiano (University of Sassari)H-Index: 23
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ABSTRACTThis paper presents the geological, structural and metallogenic map of the Arbus Pluton, a late Variscan composite intrusion belonging to the Corsica-Sardinia Batholith. The pluton is surrounded and crosscut by a wide variety of vein ore deposits. The Arbus Pluton was emplaced at shallow crustal levels at the end of the Variscan Orogeny, along an E–W trending shear zone located in the low-grade external nappe pile of the Sardinian basement. The architecture of the pluton is roughly conce...
9 CitationsSource
#1Aida Maria ConteH-Index: 1
#2Stefano NaitzaH-Index: 6
Last. Massimo D'AntonioH-Index: 27
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