Eva Maria Walitzi's research while affiliated with Georg-August-Universität Göttingen and other places
What is this page?
This page lists the scientific contributions of an author, who either does not have a ResearchGate profile, or has not yet added these contributions to their profile.
It was automatically created by ResearchGate to create a record of this author's body of work. We create such pages to advance our goal of creating and maintaining the most comprehensive scientific repository possible. In doing so, we process publicly available (personal) data relating to the author as a member of the scientific community.
If you're a ResearchGate member, you can follow this page to keep up with this author's work.
If you are this author, and you don't want us to display this page anymore, please let us know.
It was automatically created by ResearchGate to create a record of this author's body of work. We create such pages to advance our goal of creating and maintaining the most comprehensive scientific repository possible. In doing so, we process publicly available (personal) data relating to the author as a member of the scientific community.
If you're a ResearchGate member, you can follow this page to keep up with this author's work.
If you are this author, and you don't want us to display this page anymore, please let us know.
Publications (6)
Zusammenfassung Eine Strukturuntersuchung auf Grund zweidimensionaler Fouriermethoden bestätigt für die Hornblende aus dem eklogitischen Gestein von Stramez die vermutete kristallchemische Formel, wobei sich die Position A in 10-Koordination als besetzt erweist. Außerdem ist für die 6-koordinierten Kationen eine nichtstatistische Besetzung der Atom...
Denningit, (Mn, Ca, Zn) Te2O5 ist tetragonal mit der Raumgruppe P 42/n bc und den Gitterkonstanten a=8,82, c=13,04; Z=8. Die Struktur wurde mit Patterson-, Fourier- und (Fo-Fc)-Projektionen parallel [100], [110] und [001] bestimmt und verfeinert. Abschlieend konnte eine least-squares-Verfeinerung durchgefhrt werden. Je zwei trigonale TeO3-Pyramiden...
Eine mit zweidimensionalen Fouriermethoden durchgeführte Strukturverfeinerung bestätigt die vonH. Heritsch (1940) für Libethenit bestimmte Struktur. Von der daraus resultierenden kristallchemischen Formel Cu[4+2] Cu[5] (OH) [PO4] ist sowohl die Strukturanalogie mit Andalusit und Adamin als auch die zu gleichen Teilen auftretende Sechser- und Fünfer...
Inhalt Hornblenden aus Eklogiten und Amphiboliten der südlichen Koralpe werden chemisch und optisch untersucht; außerdem sind die Gitterkonstanten der Hornblenden bestimmt worden.
Citations
... ' Gradual . transformations of amphyboles and apparition of intermediary terms disagree the opinion according to which eclogites amphyboles would form an homogeneous community both among them and with those from host amphybolic formations (Machatschki and Walitzi, 1962). ...
... All crystallographic calculations and indexing were done with the lattice parameters and equivalent positions reported for a hornblende by Trojer and Walitzi (1965). The lattice parameters are a:0.986 ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/273609696477186-1442245043543_Q64/Felix-Trojer.jpg)
... The structural arrangement of olivenite and libethenite seems to be particularly stable and is also found in minerals in other classes, such as in andalusite (Al 2 SiO 5 ) or kieserite (MgSO 4 ·H 2 O). The symmetry and crystal class of olivenite and libethenite was a matter of long debate (Heritsch, 1938;Richmond, 1940;Berry, 1951;Walitzi, 1963;Toman, 1977). To resolve the issue, Burns and Hawthorne (1995) carried out the refinement of the structural model in both orthorhombic and monoclinic symmetry for olivenite. ...
... Tellurium(IV) oxides and oxotellurates(IV) are attracting more and more research attention, because they can adopt unusual crystal structures. Some examples are NdClTe 2 O 5 (tetragonal, P4/mmm) [1] with ψ 1 -octahedrally coordinated Te 4 + cations, α-TeO 2 (paratellurite: tetragonal, P4 1 2 1 2) [2] and β-TeO 2 (tellurite: orthorhombic, Pbca) [3] and high-pressure γ-TeO 2 (orthorhombic, P2 1 2 1 2 1 ) [4] with ψ 1 -trigonal bipyramidally coordinated Te 4 + cations, Zn[TeO 3 ] (orthorhombic, Pbca) [5] with discrete ψ 1tetrahedral [TeO 3 ] 2À anions and Ca(Mn,Zn)[Te 2 O 5 ] 2 (as mineral denningite: tetragonal, P4 2 /nbc) [6] with pyroanionic [Te 2 O 5 ] 2À groups. This is mainly due to the variability in the coordination environments of the oxotellurate(IV) anion [7][8][9] and also the presence of a stereochemically active lone-pair of electrons at their Te 4 + centers. ...
