- PII
- 10.31857/S0023476123700236-1
- DOI
- 10.31857/S0023476123700236
- Publication type
- Status
- Published
- Authors
- Volume/ Edition
- Volume 68 / Issue number 4
- Pages
- 575-580
- Abstract
- A variety of the mineral nezilovite, containing antimony and an elevated amount of titanium, has been studied using microprobe and X-ray diffraction analysis. The diffraction experiment was performed on a crystal presenting an aggregate of nezilovite and högbomite with close unit-cell parameters. The parameters of the hexagonal cell of the nezilovite studied are a = 5.8855(2) Å, c = 23.092(1) Å, V = 692.73 (4) Å3,sp. gr. P63/mmc. The structural model is refined using a limited number of unique reflections 231F > 4σ(F) to R = 0.08. The crystallochemical formula is (Z = 2) PbZn2(Ti0.9Al0.1)(Al0.6Sb )Mn Fe O18.5(O,OH)0.5. The distribution of cations of this composition over structure sites is established. A basis of the mineral structure is a set of spinel layers, consisting of edge-sharing Fe3+ octahedra. They alternate with two heteropolyhedral layers: Zn tetrahedra combine (Al,Sb) octahedra in one layer, and five-vertex Ti polyhedra combine dimers of Mn3+ octahedra in the other layer.
- Keywords
- CRYSTALLOCHEMICAL FEATURES NEZILOVITE
- Date of publication
- 15.09.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 14
References
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