The structure of charoite, (K,Sr,Ba,Mn)(15-16)(Ca,Na)(32)[(Si-70(O,OH)(180))](OH,F)(4.0)center dot nH(2)O, solved by conventional and automated electron diffraction
Charoite, ideally (K,Sr,Ba,Mn)(15-16)(Ca,Na)(32)[(Si-70(O,OH)(180))](OH,F)(4.0)center dot nH(2)O, a rare mineral from the Murun massif in Yakutiya, Russia, was studied using high-resolution transmission electron microscopy, selected-area electron diffraction, X-ray spectroscopy, precession electron...
Published in: | Mineralogical Magazine |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2010
|
Subjects: | |
Online Access: | http://hdl.handle.net/11568/1131384 https://doi.org/10.1180/minmag.2010.074.1.159 |
id |
ftunivpisairis:oai:arpi.unipi.it:11568/1131384 |
---|---|
record_format |
openpolar |
spelling |
ftunivpisairis:oai:arpi.unipi.it:11568/1131384 2024-04-21T08:13:04+00:00 The structure of charoite, (K,Sr,Ba,Mn)(15-16)(Ca,Na)(32)[(Si-70(O,OH)(180))](OH,F)(4.0)center dot nH(2)O, solved by conventional and automated electron diffraction Rozhdestvenskaya, I. Mugnaioli, E. Czank, M. Depmeier, W. Kolb, U. Reinholdt, A. Weirich, T. Rozhdestvenskaya, I. Mugnaioli, E. Czank, M. Depmeier, W. Kolb, U. Reinholdt, A. Weirich, T. 2010 STAMPA http://hdl.handle.net/11568/1131384 https://doi.org/10.1180/minmag.2010.074.1.159 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000277857100012 volume:74 issue:1 firstpage:159 lastpage:177 numberofpages:19 journal:MINERALOGICAL MAGAZINE http://hdl.handle.net/11568/1131384 doi:10.1180/minmag.2010.074.1.159 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77951810644 Automated electron diffraction tomography (ADT) Charoite Crystal structure analysi Precession electron diffraction (PED) info:eu-repo/semantics/article 2010 ftunivpisairis https://doi.org/10.1180/minmag.2010.074.1.159 2024-03-28T01:43:16Z Charoite, ideally (K,Sr,Ba,Mn)(15-16)(Ca,Na)(32)[(Si-70(O,OH)(180))](OH,F)(4.0)center dot nH(2)O, a rare mineral from the Murun massif in Yakutiya, Russia, was studied using high-resolution transmission electron microscopy, selected-area electron diffraction, X-ray spectroscopy, precession electron diffraction and the newly developed technique of automated electron-diffraction tomography. The structure of charoite (a = 31.96(6) angstrom, b = 19.64(4) angstrom, c = 7.09(1) angstrom, beta = 90.0(1)degrees, V = 4450(24) angstrom(3), space group P2(1)/m) was solved ab initio by direct methods from 2878 unique observed reflections and refined to R-1/wR(2) = 0.17/0.21. The structure can be visualized as being composed of three different dreier silicate chains: a double dreier chain, [Si6O17](10-); a tubular loop-branched dreier triple chain, [Si12O30](12-); and a tubular hybrid dreier quadruple chain, [Si17O43](18-). The silicate chains occur between ribbons of edge-sharing Ca and Na-octahedra. The chains of tetrahedra and the ribbons of octahedra extend parallel to the z axis. K+, Ba2+, Sr2+, Mn2+ and H2O molecules lie inside tubes and channels of the structure. On the basis of microprobe analyses and occupancy refinement of the cation sites, the crystal chemical formula of this charoite can be written as (Z = 1): (K13.88Sr1.0Ba0.32Mn0.36)(Sigma 15.56)(Ca25.64Na6.36)Sigma 32 [(Si6O11(O,OH)(6))(2)(Si12O18(O,OH)(12))(2)(Si17O25(O,OH)(18))(2)](OH,F)(4.0)center dot 3.18H(2)O. Article in Journal/Newspaper Yakutiya ARPI - Archivio della Ricerca dell'Università di Pisa Mineralogical Magazine 74 1 159 177 |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
topic |
Automated electron diffraction tomography (ADT) Charoite Crystal structure analysi Precession electron diffraction (PED) |
spellingShingle |
Automated electron diffraction tomography (ADT) Charoite Crystal structure analysi Precession electron diffraction (PED) Rozhdestvenskaya, I. Mugnaioli, E. Czank, M. Depmeier, W. Kolb, U. Reinholdt, A. Weirich, T. The structure of charoite, (K,Sr,Ba,Mn)(15-16)(Ca,Na)(32)[(Si-70(O,OH)(180))](OH,F)(4.0)center dot nH(2)O, solved by conventional and automated electron diffraction |
topic_facet |
Automated electron diffraction tomography (ADT) Charoite Crystal structure analysi Precession electron diffraction (PED) |
description |
Charoite, ideally (K,Sr,Ba,Mn)(15-16)(Ca,Na)(32)[(Si-70(O,OH)(180))](OH,F)(4.0)center dot nH(2)O, a rare mineral from the Murun massif in Yakutiya, Russia, was studied using high-resolution transmission electron microscopy, selected-area electron diffraction, X-ray spectroscopy, precession electron diffraction and the newly developed technique of automated electron-diffraction tomography. The structure of charoite (a = 31.96(6) angstrom, b = 19.64(4) angstrom, c = 7.09(1) angstrom, beta = 90.0(1)degrees, V = 4450(24) angstrom(3), space group P2(1)/m) was solved ab initio by direct methods from 2878 unique observed reflections and refined to R-1/wR(2) = 0.17/0.21. The structure can be visualized as being composed of three different dreier silicate chains: a double dreier chain, [Si6O17](10-); a tubular loop-branched dreier triple chain, [Si12O30](12-); and a tubular hybrid dreier quadruple chain, [Si17O43](18-). The silicate chains occur between ribbons of edge-sharing Ca and Na-octahedra. The chains of tetrahedra and the ribbons of octahedra extend parallel to the z axis. K+, Ba2+, Sr2+, Mn2+ and H2O molecules lie inside tubes and channels of the structure. On the basis of microprobe analyses and occupancy refinement of the cation sites, the crystal chemical formula of this charoite can be written as (Z = 1): (K13.88Sr1.0Ba0.32Mn0.36)(Sigma 15.56)(Ca25.64Na6.36)Sigma 32 [(Si6O11(O,OH)(6))(2)(Si12O18(O,OH)(12))(2)(Si17O25(O,OH)(18))(2)](OH,F)(4.0)center dot 3.18H(2)O. |
author2 |
Rozhdestvenskaya, I. Mugnaioli, E. Czank, M. Depmeier, W. Kolb, U. Reinholdt, A. Weirich, T. |
format |
Article in Journal/Newspaper |
author |
Rozhdestvenskaya, I. Mugnaioli, E. Czank, M. Depmeier, W. Kolb, U. Reinholdt, A. Weirich, T. |
author_facet |
Rozhdestvenskaya, I. Mugnaioli, E. Czank, M. Depmeier, W. Kolb, U. Reinholdt, A. Weirich, T. |
author_sort |
Rozhdestvenskaya, I. |
title |
The structure of charoite, (K,Sr,Ba,Mn)(15-16)(Ca,Na)(32)[(Si-70(O,OH)(180))](OH,F)(4.0)center dot nH(2)O, solved by conventional and automated electron diffraction |
title_short |
The structure of charoite, (K,Sr,Ba,Mn)(15-16)(Ca,Na)(32)[(Si-70(O,OH)(180))](OH,F)(4.0)center dot nH(2)O, solved by conventional and automated electron diffraction |
title_full |
The structure of charoite, (K,Sr,Ba,Mn)(15-16)(Ca,Na)(32)[(Si-70(O,OH)(180))](OH,F)(4.0)center dot nH(2)O, solved by conventional and automated electron diffraction |
title_fullStr |
The structure of charoite, (K,Sr,Ba,Mn)(15-16)(Ca,Na)(32)[(Si-70(O,OH)(180))](OH,F)(4.0)center dot nH(2)O, solved by conventional and automated electron diffraction |
title_full_unstemmed |
The structure of charoite, (K,Sr,Ba,Mn)(15-16)(Ca,Na)(32)[(Si-70(O,OH)(180))](OH,F)(4.0)center dot nH(2)O, solved by conventional and automated electron diffraction |
title_sort |
structure of charoite, (k,sr,ba,mn)(15-16)(ca,na)(32)[(si-70(o,oh)(180))](oh,f)(4.0)center dot nh(2)o, solved by conventional and automated electron diffraction |
publishDate |
2010 |
url |
http://hdl.handle.net/11568/1131384 https://doi.org/10.1180/minmag.2010.074.1.159 |
genre |
Yakutiya |
genre_facet |
Yakutiya |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000277857100012 volume:74 issue:1 firstpage:159 lastpage:177 numberofpages:19 journal:MINERALOGICAL MAGAZINE http://hdl.handle.net/11568/1131384 doi:10.1180/minmag.2010.074.1.159 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77951810644 |
op_doi |
https://doi.org/10.1180/minmag.2010.074.1.159 |
container_title |
Mineralogical Magazine |
container_volume |
74 |
container_issue |
1 |
container_start_page |
159 |
op_container_end_page |
177 |
_version_ |
1796933438057480192 |