DC pole | Wartość | Język |
dc.contributor.author | Krüger, Biljana | - |
dc.contributor.author | Galuskin, Evgeny | - |
dc.contributor.author | Galuskina, Irina | - |
dc.contributor.author | Krüger, Hannes | - |
dc.contributor.author | Vapnik, Yevgeny | - |
dc.date.accessioned | 2021-07-19T09:43:56Z | - |
dc.date.available | 2021-07-19T09:43:56Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | European Journal of Mineralogy, Vol. 33, iss. 4 (2021) s. 341-355 | pl_PL |
dc.identifier.issn | 1617-4011 | - |
dc.identifier.issn | 0935-1221 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/20694 | - |
dc.description.abstract | Kahlenbergite, ideally KAl11O17, and Fe-rich hibonite, CaAl10Fe2O19, are high-temperature minerals
found in “olive” subunits of pyrometamorphic rocks, in the Hatrurim Basin, the Negev desert, Israel. The
crystal structures of both minerals are refined using synchrotron radiation single-crystal diffraction data. The
structure of kahlenbergite (P63/mmc; a = 5.6486(1) A; b = 22.8970(3) A; Z = 2) exhibits triple spinel blocks
and so-called R blocks. The spinel blocks show mixed layers with AlO6 octahedra and (Al0.56Fe0.44)O4 tetrahedra and kagome layers with (Al0.92Fe0.08)O6 octahedra. One-dimensional diffuse scattering observed parallel to c* implies stacking faults in the structure. Also, in one of the investigated kahlenbergite crystals additional reflections can be identified, which obviously belong to a second phase with a smaller lattice parameter c: Fe3+-rich hibonite. The structure of hibonite contains the same spinel blocks as kahlenbergite. The R blocks in hibonite contain Ca atoms, AlO5 bipyramids, and AlO6 octahedra, whereas the R blocks in kahlenbergite contain potassium atoms and AlO4 tetrahedra. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | Kahlenbergite | pl_PL |
dc.subject | Hibonite | pl_PL |
dc.subject | Hatrurim Basin | pl_PL |
dc.subject | the Negev desert | pl_PL |
dc.subject | Israel | pl_PL |
dc.subject | β-alumina mineral | pl_PL |
dc.title | Kahlenbergite KAl11O17, a new β-alumina mineral and Fe-rich hibonite from the Hatrurim Basin, the Negev desert, Israel | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.5194/ejm-33-341-2021 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
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