Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (6/6 displayed)

  • 2021Cr2O3 in corundum12citations
  • 2020Kishonite, VH2, and Oreillyite, Cr2N, two new minerals from the corundum xenocrysts of Mt Carmel, Northern Israel15citations
  • 2020Extreme reduction22citations
  • 2019Dellagiustaite14citations
  • 2019Chromium in Corundum: Ultra-high Contents Under Reducing Conditionscitations
  • 2018Carmeltazite, ZrAl2Ti4O11, a new mineral trapped in corundum from volcanic rocks of Mt Carmel, Northern Israel30citations

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Chart of shared publication
Toledo, Vered
4 / 4 shared
Spartà, Deborah
1 / 1 shared
Bindi, Luca
4 / 16 shared
Saunders, Martin
4 / 33 shared
Cámara, Fernando
4 / 7 shared
Cámara, F.
1 / 1 shared
Bindi, L.
1 / 6 shared
Shaw, J.
1 / 1 shared
Saunders, M.
1 / 5 shared
Toledo, V.
1 / 1 shared
Pagano, Adriana
1 / 1 shared
Pagano, Renato
1 / 1 shared
Griffin, William L.
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Co-Authors (by relevance)

  • Toledo, Vered
  • Spartà, Deborah
  • Bindi, Luca
  • Saunders, Martin
  • Cámara, Fernando
  • Cámara, F.
  • Bindi, L.
  • Shaw, J.
  • Saunders, M.
  • Toledo, V.
  • Pagano, Adriana
  • Pagano, Renato
  • Griffin, William L.
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article

Dellagiustaite

  • Pagano, Adriana
  • Gain, Sarah
  • Bindi, Luca
  • Pagano, Renato
  • Cámara, Fernando
Abstract

<p>Dellagiustaite, ideally Al<sub>2</sub>V<sup>2+</sup>O<sub>4</sub>, is anew spinel-group mineral from Sierra de Comechingones, San Luis,Argentina, where it is found associated with hibonite (containingtubular inclusions, 5–100 μm, of metallic vanadium), grossite, and twoother unknown phases with ideal stoichiometry of Ca<sub>2</sub>Al<sub>3</sub>O<sub>6</sub>F and Ca<sub>2</sub>Al<sub>2</sub>SiO<sub>7</sub>.A very similar rock containing dellagiustaite has been found at MtCarmel (northern Israel), where super-reduced mineral assemblages havecrystallized from high-T melts trappedin corundum aggregates (micro-xenoliths) within picritic-tholeiiticlavas ejected from Cretaceous volcanoes. In the holotype, euhedralgrains of dellagiustaite are found as inclusions in grossite. Theempirical average chemical formula of dellagiustaite is (Al<sub>1.09</sub>V2+0.91V3+0.87Mg<sub>0.08</sub> Ti3+0.04Mn<sub>0.01</sub>)<sub>Σ3</sub>O<sub>4</sub>, but it may show limited replacement of V<sup>2+</sup> by Mg and of V<sup>3+</sup> by Al. As Al is the dominant trivalent cation, the ideal formula is Al<sub>2</sub>V<sup>2+</sup>O<sub>4</sub> according to the current IMA rules. Dellagiustaite shows the usual space group of spinel-group minerals (Fd 3¯ m, R<sub>1</sub> = 1.46%) with a = 8.1950(1) Å. The observed mean bond lengths &lt;T–O&gt; = 1.782(2) Å and &lt;M–O&gt; = 2.0445(9) Å, the observed site scattering (T = 13.3 eps, M = 22.5 eps), and the chemical composition show that dellagiustaite is an inverse spinel: T tetrahedra are occupied by Al<sup>3+</sup>, whereas M octahedra are occupied by V<sup>2+</sup> and V<sup>3+</sup>, leading to the site assignment as <sup>T</sup>Al<sup>M</sup>( V2+0.91V3+0.88Al3+0.09Mg<sub>0.08</sub> Ti3+0.03Mn<sub>0.01</sub>)O<sub>4.</sub></p>

Topics
  • impedance spectroscopy
  • mineral
  • inclusion
  • melt
  • chemical composition
  • vanadium
  • space group