BrainMap

Gavril Săbău

Senior Res gr.I - INSTITUTUL GEOLOGIC AL ROMANIEI

Researcher

Expertise & keywords

Evolved magmatic and pegmatitic systems as sources of critical raw materials and industrial minerals Call name: P 3 - SP 3.2 - Proiecte ERA.NET - COFUND
COFUND-ERAMIN-3-PEGMAT 2022 - 2024

Role in this project: Project coordinator

Coordinating institution: INSTITUTUL GEOLOGIC AL ROMANIEI

Project partners: INSTITUTUL GEOLOGIC AL ROMANIEI (RO); Masaryk University Department of Geological Sciences (CZ); Bureau de Recherches Géologiques et Minières (FR); Geological Institute “Strashimir Dimitrov”, Bulgarian Academy of Sciences (BG); Earth Science Institute, Slovak Academy of Sciences (SK); GET s.r.o. (CZ); KMK GRANIT a.s. (CZ)

Affiliation: INSTITUTUL GEOLOGIC AL ROMANIEI (RO)

Project website: http://pegmat.igr.ro

Abstract:

Rare metal granites (RMG) and pegmatites may represent favorable hosts for several European critical raw materials and industrial minerals. These magmatic bodies may show a strong enrichment in various metals and critical raw materials (CRM) such as Li, Ta, Nb, Sn, W, Be, Cs and REEs, which are of great interest for Europe. They are also storehouses for many industrial minerals (e.g., feldspar, quartz, mica, kaolin).

Variscan orogeny in Europe produced a considerable amount of granitic intrusions and several districts of RMG, related greisens and rare-element pegmatite occurrences. In the Carpathian-Balkan area, the Variscan orogeny is illustrated mainly through occurrences of I- to S-type granites and rare-element pegmatites that, however, may not be necessarily linked to specific igneous bodies. Moreover, some Permian granites in the Western Carpathian area show promising rare-metal content potential, as do metasomatically altered rocks in Romania apparently unrelated to granitic magmatism.

Despite previous mining of some pegmatites for ceramic materials, the area potential for CRM is still weakly explored.

The PEGMAT project aims to: (i) identify most of the pegmatites and RMG occurrences in the Carpathian-Balkan area and assess their respective geological/structural/geochemical features; (ii) understand and characterize the geological processes and structural constraints leading to pegmatite and RMG formation; (iii) assess raw material content evolution through time and geological environments for these

magmatic bodies and understand their distribution in the selected region; (iv) characterize internal processes of pegmatite formation, model pegmatite bodies and constrain their inner structure; (v) determine potential areas for prospecting regarding raw material content. An applied problem of (vi) usability parameters of CRM as well as industrial silicate materials from complex pegmatite bodies will be addressed by the applied part of the project by the partners from the Czechia.

The work planned in the project includes (i) review of available data on pegmatite and RMG deposits; (ii) field work, detailed mapping and sampling of pegmatite and RMG bodies and their structural constrains in the host units; (iii) quantitative and genetic characterization and age dating of the main localities; (iv) assessment of bulk composition and trace elements; (v) advanced 3D modelling of selected localities; (vi) assessment of metallogenic processes; (vii) Czech team will evaluate usability of silicate and rare-element ore minerals at selected localities. All research institution partners will be involved in all tasks of the project; industrial partners from Czechia will be involved especially in the usability study and field work.

The architecture of Romanian metamorphic basement units: a chronological insight from monazite electron microprobe chemical age determinations Call name: Exploratory Research Projects - PCE-2011 call
PN-II-ID-PCE-2011-3-0030 2011 - 2016

Role in this project: Project coordinator

Coordinating institution: Institutul de Cercetare-Dezvoltare în Domeniul Geologiei, Geochimiei şi Teledetecţiei (Institutul Geologic al României)

Project partners: Institutul de Cercetare-Dezvoltare în Domeniul Geologiei, Geochimiei şi Teledetecţiei (Institutul Geologic al României) (RO)

Affiliation: Institutul de Cercetare-Dezvoltare în Domeniul Geologiei, Geochimiei şi Teledetecţiei (Institutul Geologic al României) (RO)

Project website: http://www.igr.ro/proiecte/archimedes/

Abstract:

Metamorphic complexes exhumed to the surface of the Earth witness crustal-scale geodynamic events building the geostructural units of a particular territory. The metamorphic history is assessed by the recognizable assemblages, their succession and areal distribution. The time of mineral growth is recorded by the decay of radioactive isotopes incorporated in the minerals. The success in exerting chronological constraints on assemblages and textures depends on unambiguous identification of coeval radioactive minerals. Monazite represents the ideal candidate given its growth from low- to high-grade conditions, below the isotopic blocking temperature, abundant incorporation of radioactive elements, and chemical robustness. The project aims to systematic sampling of typical lithologies from units of the basement complexes in Romania, microscopic scrutiny of monazite setting in the metamorphic assemblages, and in situ monazite microprobe analyses on thin sections. The combined petrologic-chronologic approach would highlight the inner structure of the metamorphic complexes and the timing of their formation and evolution at unprecedented resolution, revealing events building metamorphic suites, spatial extension of particular domains within these, and means for a regional correlation among the metamorphic units, thereby tracking the chronology of dismembering and amalgamation episodes of basement and ultimately crustal fragments, all through the shaping of the present-day structure.

Integrated research on the intracontinental intermediate-depth earthquakes genesis within Vrancea zone Call name:
3299/CEEX/MENER 2006 - 2009

Role in this project: Partner team leader

Coordinating institution: INSTITUTUL DE GEODINAMICA

Project partners: INSTITUTUL DE GEODINAMICA (); INSTITUTUL GEOLOGIC AL ROMANIEI ()

Affiliation: INSTITUTUL GEOLOGIC AL ROMANIEI ()

Project website:

Abstract:

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List of research grants as project coordinator
List of research grants as partner team leader
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Peer-review activity for international programs/projects