Crystal chemistry of mercury sulfosalts - Galkhaite, (Hg 5+x Cu 1-x )Cs 1-x As 4 S 12 (x ≈ 0): Crystal structure and revision of the chemical formula
Three specimens of galkhaite from the Getchell mine (G), Nevada, USA; the Gal-Khaya As-Hg-Sb deposit (Gk), Yakutia, Russia; and Signols (S), Piedmont, Italy, have been fully characterized through single-crystal X-ray diffraction and electronmicroprobe analyses. Chemical data indicate the formulae [(...
Published in: | The Canadian Mineralogist |
---|---|
Main Authors: | , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2014
|
Subjects: | |
Online Access: | http://hdl.handle.net/11568/815733 https://doi.org/10.3749/canmin.1400065 http://www.canmin.org/content/52/5/873.full.pdf+html |
id |
ftunivpisairis:oai:arpi.unipi.it:11568/815733 |
---|---|
record_format |
openpolar |
spelling |
ftunivpisairis:oai:arpi.unipi.it:11568/815733 2024-04-21T08:13:04+00:00 Crystal chemistry of mercury sulfosalts - Galkhaite, (Hg 5+x Cu 1-x )Cs 1-x As 4 S 12 (x ≈ 0): Crystal structure and revision of the chemical formula BIAGIONI, CRISTIAN Bindi, Luca Zaccarini, Federica Biagioni, Cristian Bindi, Luca Zaccarini, Federica 2014 STAMPA http://hdl.handle.net/11568/815733 https://doi.org/10.3749/canmin.1400065 http://www.canmin.org/content/52/5/873.full.pdf+html eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000355253500006 volume:52 issue:5 firstpage:873 lastpage:882 numberofpages:10 journal:CANADIAN MINERALOGIST http://hdl.handle.net/11568/815733 doi:10.3749/canmin.1400065 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84930023613 http://www.canmin.org/content/52/5/873.full.pdf+html Arsenic Cesium Copper Crystal-chemistry Galkhaite Mercury Sulfosalt Geochemistry and Petrology info:eu-repo/semantics/article 2014 ftunivpisairis https://doi.org/10.3749/canmin.1400065 2024-03-28T01:30:18Z Three specimens of galkhaite from the Getchell mine (G), Nevada, USA; the Gal-Khaya As-Hg-Sb deposit (Gk), Yakutia, Russia; and Signols (S), Piedmont, Italy, have been fully characterized through single-crystal X-ray diffraction and electronmicroprobe analyses. Chemical data indicate the formulae [(Hg 4.61 Zn 0.38 Fe 0.04 ) Σ5.03 (Cu 1.03 Ag 0.04 ) Σ1.07 ] Σ6.10 (Cs 0.76 Tl 0.20 ) Σ0.96 (AS 3.81 Sb 0.04 ) Σ3.85 S 12.06 (G), [(Hg 4.66 Zn 0.32 ) Σ4.98 (Cu 0.55 Ag 0.45 ) Σ1.00 ] Σ5.98 (Cs 0.74 Tl 0.06 (As 3.42 Sb 0.56 ) Σ3.98 S 12.05 (Gk), and [(Hg 4.10 Zn 0.85 ) Σ4.95 (Cu 0.89 Ag 0.16 ) Σ1.05 ] Σ6.00 Cs 0.95 As 3.64 Sb 0.16 )Σ3.80 S 12.19 (S). Unit-cell parameters are a 10.405(3) Å (G), 10.443(1) Å (Gk), and 10.332(2) Å (S), space group I4 ̄3m. The crystal structure of the three specimens has been solved to R 1 = 0.029 (G), 0.028 (Gk), and 0.031 (S). It is a three-dimensional framework of HgS 4 and AsS 3 polyhedra, with Cs hosted in large 12-fold coordinated cavities. The introduction of Cs + , as well as minor Tl + , at these structural positions requires the replacement of Hg 2+ by Cu + . The mixed site occupancy at the Hg site of galkhaite is a case of valency-imposed double site-occupancy. Consequently, the idealized chemical formula of galkhaite can be written as (Hg 5 Cu)CsAs 4 S 12 . Taking into account the possible existence of vacancy in the structural cavities, the formula can be generalized as (Hg 5+x Cu 1-x ) Σ6 Cs 1-x As 4 S 12 (x ≈ 0). Article in Journal/Newspaper Yakutia ARPI - Archivio della Ricerca dell'Università di Pisa The Canadian Mineralogist 52 5 873 882 |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
topic |
Arsenic Cesium Copper Crystal-chemistry Galkhaite Mercury Sulfosalt Geochemistry and Petrology |
spellingShingle |
Arsenic Cesium Copper Crystal-chemistry Galkhaite Mercury Sulfosalt Geochemistry and Petrology BIAGIONI, CRISTIAN Bindi, Luca Zaccarini, Federica Crystal chemistry of mercury sulfosalts - Galkhaite, (Hg 5+x Cu 1-x )Cs 1-x As 4 S 12 (x ≈ 0): Crystal structure and revision of the chemical formula |
topic_facet |
Arsenic Cesium Copper Crystal-chemistry Galkhaite Mercury Sulfosalt Geochemistry and Petrology |
description |
Three specimens of galkhaite from the Getchell mine (G), Nevada, USA; the Gal-Khaya As-Hg-Sb deposit (Gk), Yakutia, Russia; and Signols (S), Piedmont, Italy, have been fully characterized through single-crystal X-ray diffraction and electronmicroprobe analyses. Chemical data indicate the formulae [(Hg 4.61 Zn 0.38 Fe 0.04 ) Σ5.03 (Cu 1.03 Ag 0.04 ) Σ1.07 ] Σ6.10 (Cs 0.76 Tl 0.20 ) Σ0.96 (AS 3.81 Sb 0.04 ) Σ3.85 S 12.06 (G), [(Hg 4.66 Zn 0.32 ) Σ4.98 (Cu 0.55 Ag 0.45 ) Σ1.00 ] Σ5.98 (Cs 0.74 Tl 0.06 (As 3.42 Sb 0.56 ) Σ3.98 S 12.05 (Gk), and [(Hg 4.10 Zn 0.85 ) Σ4.95 (Cu 0.89 Ag 0.16 ) Σ1.05 ] Σ6.00 Cs 0.95 As 3.64 Sb 0.16 )Σ3.80 S 12.19 (S). Unit-cell parameters are a 10.405(3) Å (G), 10.443(1) Å (Gk), and 10.332(2) Å (S), space group I4 ̄3m. The crystal structure of the three specimens has been solved to R 1 = 0.029 (G), 0.028 (Gk), and 0.031 (S). It is a three-dimensional framework of HgS 4 and AsS 3 polyhedra, with Cs hosted in large 12-fold coordinated cavities. The introduction of Cs + , as well as minor Tl + , at these structural positions requires the replacement of Hg 2+ by Cu + . The mixed site occupancy at the Hg site of galkhaite is a case of valency-imposed double site-occupancy. Consequently, the idealized chemical formula of galkhaite can be written as (Hg 5 Cu)CsAs 4 S 12 . Taking into account the possible existence of vacancy in the structural cavities, the formula can be generalized as (Hg 5+x Cu 1-x ) Σ6 Cs 1-x As 4 S 12 (x ≈ 0). |
author2 |
Biagioni, Cristian Bindi, Luca Zaccarini, Federica |
format |
Article in Journal/Newspaper |
author |
BIAGIONI, CRISTIAN Bindi, Luca Zaccarini, Federica |
author_facet |
BIAGIONI, CRISTIAN Bindi, Luca Zaccarini, Federica |
author_sort |
BIAGIONI, CRISTIAN |
title |
Crystal chemistry of mercury sulfosalts - Galkhaite, (Hg 5+x Cu 1-x )Cs 1-x As 4 S 12 (x ≈ 0): Crystal structure and revision of the chemical formula |
title_short |
Crystal chemistry of mercury sulfosalts - Galkhaite, (Hg 5+x Cu 1-x )Cs 1-x As 4 S 12 (x ≈ 0): Crystal structure and revision of the chemical formula |
title_full |
Crystal chemistry of mercury sulfosalts - Galkhaite, (Hg 5+x Cu 1-x )Cs 1-x As 4 S 12 (x ≈ 0): Crystal structure and revision of the chemical formula |
title_fullStr |
Crystal chemistry of mercury sulfosalts - Galkhaite, (Hg 5+x Cu 1-x )Cs 1-x As 4 S 12 (x ≈ 0): Crystal structure and revision of the chemical formula |
title_full_unstemmed |
Crystal chemistry of mercury sulfosalts - Galkhaite, (Hg 5+x Cu 1-x )Cs 1-x As 4 S 12 (x ≈ 0): Crystal structure and revision of the chemical formula |
title_sort |
crystal chemistry of mercury sulfosalts - galkhaite, (hg 5+x cu 1-x )cs 1-x as 4 s 12 (x ≈ 0): crystal structure and revision of the chemical formula |
publishDate |
2014 |
url |
http://hdl.handle.net/11568/815733 https://doi.org/10.3749/canmin.1400065 http://www.canmin.org/content/52/5/873.full.pdf+html |
genre |
Yakutia |
genre_facet |
Yakutia |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000355253500006 volume:52 issue:5 firstpage:873 lastpage:882 numberofpages:10 journal:CANADIAN MINERALOGIST http://hdl.handle.net/11568/815733 doi:10.3749/canmin.1400065 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84930023613 http://www.canmin.org/content/52/5/873.full.pdf+html |
op_doi |
https://doi.org/10.3749/canmin.1400065 |
container_title |
The Canadian Mineralogist |
container_volume |
52 |
container_issue |
5 |
container_start_page |
873 |
op_container_end_page |
882 |
_version_ |
1796933435464351744 |