Structural and compositional variations of basic Cu(II) chlorides in the herbertsmithite and gillardite structure field

Matthew J. Sciberras; Peter Leverett; Peter A. Williams; Jochen Schlüter; Thomas Malcherek; Mark D. Welch; Peter J. Downes; David E. Hibbs; Anthony R. Kampf

doi:10.1180/minmag.2016.080.079

Structural and compositional variations of basic Cu(II) chlorides in the herbertsmithite and gillardite structure field

Matthew J. Sciberras, Peter Leverett, Peter A. Williams, Jochen Schlüter, Thomas Malcherek, Mark D. Welch, Peter J. Downes, David E. Hibbs, Anthony R. Kampf

Western Sydney University

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Natural samples of the substituted basic Cu(II) chloride series, Cu4-xM2+ x(OH)6Cl2 (M= Zn, Ni, or Mg) were investigated by single-crystal X-ray diffraction in order to elucidate compositional boundaries associated with paratacamite and its congeners. The compositional ranges examined are Cu3.65Zn0.35(OH)6Cl2" Cu3.36Zn0.64(OH)6Cl2 and Cu3.61Ni0.39(OH)6Cl2" Cu3.13Ni0.87(OH)6Cl2, along with a single Mg-bearing phase. The majority of samples studied have trigonal symmetry (RÊ’Ì…m) analogous to that of herbertsmithite (Zn) and gillardite (Ni), with a â‰ˆ 6.8, c â‰ˆ 14.0 ÃƒÂ…. Crystallographic variations for these samples caused by composition are compared with both published and new data for the RÊ’Ì…m sub-cell of paratacamite, paratacamite-(Mg) and paratacamite-(Ni). The observed trends suggest that the composition of end-members associated with the paratacamite congeners depend upon the nature of the substituting cation.

Original language	English
Pages (from-to)	123-134
Number of pages	20
Journal	Mineralogical Magazine
Volume	81
Issue number	1
DOIs	https://doi.org/10.1180/minmag.2016.080.079
Publication status	Published - 2017

Keywords

chlorides
crystals
gillardite
herbertsmithite
paratacamite

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10.1180/minmag.2016.080.079

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title = "Structural and compositional variations of basic Cu(II) chlorides in the herbertsmithite and gillardite structure field",

abstract = "Natural samples of the substituted basic Cu(II) chloride series, Cu4-xM2+ x(OH)6Cl2 (M= Zn, Ni, or Mg) were investigated by single-crystal X-ray diffraction in order to elucidate compositional boundaries associated with paratacamite and its congeners. The compositional ranges examined are Cu3.65Zn0.35(OH)6Cl2{"} Cu3.36Zn0.64(OH)6Cl2 and Cu3.61Ni0.39(OH)6Cl2{"} Cu3.13Ni0.87(OH)6Cl2, along with a single Mg-bearing phase. The majority of samples studied have trigonal symmetry (R{\^E}{\textquoteright}{\`I}…m) analogous to that of herbertsmithite (Zn) and gillardite (Ni), with a {\^a}‰ˆ 6.8, c {\^a}‰ˆ 14.0 {\~A}ƒ{\^A}…. Crystallographic variations for these samples caused by composition are compared with both published and new data for the R{\^E}{\textquoteright}{\`I}…m sub-cell of paratacamite, paratacamite-(Mg) and paratacamite-(Ni). The observed trends suggest that the composition of end-members associated with the paratacamite congeners depend upon the nature of the substituting cation.",

keywords = "chlorides, crystals, gillardite, herbertsmithite, paratacamite",

author = "Sciberras, {Matthew J.} and Peter Leverett and Williams, {Peter A.} and Jochen Schl{\"u}ter and Thomas Malcherek and Welch, {Mark D.} and Downes, {Peter J.} and Hibbs, {David E.} and Kampf, {Anthony R.}",

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T1 - Structural and compositional variations of basic Cu(II) chlorides in the herbertsmithite and gillardite structure field

AU - Sciberras, Matthew J.

AU - Leverett, Peter

AU - Williams, Peter A.

AU - Schlüter, Jochen

AU - Malcherek, Thomas

AU - Welch, Mark D.

AU - Downes, Peter J.

AU - Hibbs, David E.

AU - Kampf, Anthony R.

PY - 2017

Y1 - 2017

N2 - Natural samples of the substituted basic Cu(II) chloride series, Cu4-xM2+ x(OH)6Cl2 (M= Zn, Ni, or Mg) were investigated by single-crystal X-ray diffraction in order to elucidate compositional boundaries associated with paratacamite and its congeners. The compositional ranges examined are Cu3.65Zn0.35(OH)6Cl2" Cu3.36Zn0.64(OH)6Cl2 and Cu3.61Ni0.39(OH)6Cl2" Cu3.13Ni0.87(OH)6Cl2, along with a single Mg-bearing phase. The majority of samples studied have trigonal symmetry (RÊ’Ì…m) analogous to that of herbertsmithite (Zn) and gillardite (Ni), with a â‰ˆ 6.8, c â‰ˆ 14.0 ÃƒÂ…. Crystallographic variations for these samples caused by composition are compared with both published and new data for the RÊ’Ì…m sub-cell of paratacamite, paratacamite-(Mg) and paratacamite-(Ni). The observed trends suggest that the composition of end-members associated with the paratacamite congeners depend upon the nature of the substituting cation.

AB - Natural samples of the substituted basic Cu(II) chloride series, Cu4-xM2+ x(OH)6Cl2 (M= Zn, Ni, or Mg) were investigated by single-crystal X-ray diffraction in order to elucidate compositional boundaries associated with paratacamite and its congeners. The compositional ranges examined are Cu3.65Zn0.35(OH)6Cl2" Cu3.36Zn0.64(OH)6Cl2 and Cu3.61Ni0.39(OH)6Cl2" Cu3.13Ni0.87(OH)6Cl2, along with a single Mg-bearing phase. The majority of samples studied have trigonal symmetry (RÊ’Ì…m) analogous to that of herbertsmithite (Zn) and gillardite (Ni), with a â‰ˆ 6.8, c â‰ˆ 14.0 ÃƒÂ…. Crystallographic variations for these samples caused by composition are compared with both published and new data for the RÊ’Ì…m sub-cell of paratacamite, paratacamite-(Mg) and paratacamite-(Ni). The observed trends suggest that the composition of end-members associated with the paratacamite congeners depend upon the nature of the substituting cation.

KW - chlorides

KW - crystals

KW - gillardite

KW - herbertsmithite

KW - paratacamite

UR - http://handle.uws.edu.au:8081/1959.7/uws:34628

U2 - 10.1180/minmag.2016.080.079

DO - 10.1180/minmag.2016.080.079

M3 - Article

SN - 0026-461X

VL - 81

SP - 123

EP - 134

JO - Mineralogical Magazine

JF - Mineralogical Magazine

IS - 1

ER -

Structural and compositional variations of basic Cu(II) chlorides in the herbertsmithite and gillardite structure field

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Keywords

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