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References (11)
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- Publisher
- Springer Journals
- Copyright
- 2004 MAIK "Nauka/Interperiodica"
- ISSN
- 1063-7745
- eISSN
- 1562-689X
- DOI
- 10.1134/1.1828137
- Publisher site
- See Article on Publisher Site
Abstract
Abstract The crystal structure of Zn-containing greifensteinite from the Pirineus Mine (Minas Gerais, Brazil) was refined (R = 0.045, 562 reflections with |F| > 2σ(F)). The unit-cell parameters are a = 15.941(3) Å, b = 11.877(3) Å, c = 6.625(2) Å, β = 95.09(2)°; V = 1249.4 Å3; sp. gr. C2/c; and Z = 2. The idealized formula is [Mn(Fe2+, Zn)4]Ca2Be4(PO4)6(OH)4 · 6H2O. The mineral is isostructural with the previously studied monoclinic representatives of the roscherite group from different deposits and differs from these representatives in that it contains Zn in one of two octahedral positions.
Journal
Crystallography Reports – Springer Journals
Published: Nov 1, 2004
Keywords: Crystallography and Scattering Methods