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Ana Margarida R. Neiva

Researcher at University of Coimbra

Publications -  122
Citations -  2892

Ana Margarida R. Neiva is an academic researcher from University of Coimbra. The author has contributed to research in topics: Fractional crystallization (geology) & Muscovite. The author has an hindex of 25, co-authored 119 publications receiving 2593 citations. Previous affiliations of Ana Margarida R. Neiva include Charles University in Prague & University of Aveiro.

Papers
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Journal Article

Nomenclature of the micas

Milan Rieder, +14 more
- 01 Jun 1998 - 
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Structural control of the chlorine content of OH-bearing silicates (micas and amphiboles)

M. Volfinger, +3 more
- 01 Jan 1985 - 
TL;DR: In this article, the incorporation of chlorine in trioctahedral biotite-like micas, belonging to the series phlogopite-annite, KCo3AlSi3O10(OH)2 and phlogopsite-KNi3AlSiam3O 10(OH), was investigated at 600°C and 2 kbars, with a duration of two weeks.
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New insights from U-Pb zircon dating of Early Ordovician magmatism on the northern Gondwana margin: The Urra Formation (SW Iberian Massif, Portugal)

Ana Rita Solá, +7 more
- 01 Dec 2008 - 
TL;DR: In this paper, SHRIMP data obtained from the Urra Formation volcaniclastic rocks indicate an Early Ordovician age ( 206 Pb/ 238 U ages ranging from 494.6±6.8 Ma to 488.3±5.2 Ma) for this magmatic event.
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Geochemistry of enclaves and host granites from the Nelas area, central Portugal

Maria Manuela Silva, +2 more
- 01 Jan 2000 - 
TL;DR: In the Hercynian peraluminous porphyritic biotite granite and biotitic muscovite granite from the Nelas region, this paper showed that the granodioritic and monzogranitic enclaves generally have similar isotopic signatures to those of the host granites.
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Geochemical and isotopic constraints on the petrogenesis of Early Ordovician granodiorite and Variscan two-mica granites from the Gouveia area, central Portugal

Ana Margarida R. Neiva, +5 more
- 30 Apr 2009 - 
TL;DR: In this paper, a biotite granodiorite and seven Sn-bearing two-mica granites crop out in the Gouveia area, central Portugal, showing that they are of Early Ordovician and Permo-Carboniferous age.