Comment on "a study of the phosphate mineral kapundaite NaCa(Fe 3+)4(PO4)4(OH)3· 5(H2O) using SEM/EDX and vibrational spectroscopic methods" by Frost et al. (2014)

Stuart J. Mills; Andrew G. Christy

doi:10.1016/j.saa.2014.01.031

Comment on "a study of the phosphate mineral kapundaite NaCa(Fe ³⁺)₄(PO₄)₄(OH)₃· 5(H₂O) using SEM/EDX and vibrational spectroscopic methods" by Frost et al. (2014)

Stuart J. Mills^*, Andrew G. Christy

^*Corresponding author for this work

Research output: Contribution to journal › Comment/debate › peer-review

Abstract

The article presents comments on 'A study of the phosphate mineral kapundaite' using SEM/EDX and vibrational spectroscopic methods. Because kapundaite and wardite not only have a different structure but also a different chemistry, it is impossible for them to form a solid solution series, and they do not fall within the same crystal-chemical group of minerals. They present spectroscopic data for crystals whose provenance, quantitative composition and phase identity are all uncertain. In their conclusions, they claim to 'study aspects of the molecular structure' of a mineral which is already known to have an extended layer structure and is not composed at all of discrete molecules: yet another conceptual error.

Original language	English
Pages (from-to)	524-525
Number of pages	2
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	123
DOIs	https://doi.org/10.1016/j.saa.2014.01.031
Publication status	Published - 5 Apr 2014

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10.1016/j.saa.2014.01.031

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title = "Comment on {"}a study of the phosphate mineral kapundaite NaCa(Fe 3+)4(PO4)4(OH)3· 5(H2O) using SEM/EDX and vibrational spectroscopic methods{"} by Frost et al. (2014)",

abstract = "The article presents comments on 'A study of the phosphate mineral kapundaite' using SEM/EDX and vibrational spectroscopic methods. Because kapundaite and wardite not only have a different structure but also a different chemistry, it is impossible for them to form a solid solution series, and they do not fall within the same crystal-chemical group of minerals. They present spectroscopic data for crystals whose provenance, quantitative composition and phase identity are all uncertain. In their conclusions, they claim to 'study aspects of the molecular structure' of a mineral which is already known to have an extended layer structure and is not composed at all of discrete molecules: yet another conceptual error.",

author = "Mills, {Stuart J.} and Christy, {Andrew G.}",

year = "2014",

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doi = "10.1016/j.saa.2014.01.031",

language = "English",

volume = "123",

pages = "524--525",

journal = "Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy",

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publisher = "Elsevier B.V.",

}

Comment on "a study of the phosphate mineral kapundaite NaCa(Fe ³⁺)₄(PO₄)₄(OH)₃· 5(H₂O) using SEM/EDX and vibrational spectroscopic methods" by Frost et al. (2014). / Mills, Stuart J.; Christy, Andrew G.
In: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, Vol. 123, 05.04.2014, p. 524-525.

Research output: Contribution to journal › Comment/debate › peer-review

TY - JOUR

T1 - Comment on "a study of the phosphate mineral kapundaite NaCa(Fe 3+)4(PO4)4(OH)3· 5(H2O) using SEM/EDX and vibrational spectroscopic methods" by Frost et al. (2014)

AU - Mills, Stuart J.

AU - Christy, Andrew G.

PY - 2014/4/5

Y1 - 2014/4/5

N2 - The article presents comments on 'A study of the phosphate mineral kapundaite' using SEM/EDX and vibrational spectroscopic methods. Because kapundaite and wardite not only have a different structure but also a different chemistry, it is impossible for them to form a solid solution series, and they do not fall within the same crystal-chemical group of minerals. They present spectroscopic data for crystals whose provenance, quantitative composition and phase identity are all uncertain. In their conclusions, they claim to 'study aspects of the molecular structure' of a mineral which is already known to have an extended layer structure and is not composed at all of discrete molecules: yet another conceptual error.

AB - The article presents comments on 'A study of the phosphate mineral kapundaite' using SEM/EDX and vibrational spectroscopic methods. Because kapundaite and wardite not only have a different structure but also a different chemistry, it is impossible for them to form a solid solution series, and they do not fall within the same crystal-chemical group of minerals. They present spectroscopic data for crystals whose provenance, quantitative composition and phase identity are all uncertain. In their conclusions, they claim to 'study aspects of the molecular structure' of a mineral which is already known to have an extended layer structure and is not composed at all of discrete molecules: yet another conceptual error.

UR - http://www.scopus.com/inward/record.url?scp=84896492450&partnerID=8YFLogxK

U2 - 10.1016/j.saa.2014.01.031

DO - 10.1016/j.saa.2014.01.031

M3 - Comment/debate

SN - 1386-1425

VL - 123

SP - 524

EP - 525

JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

ER -

Comment on "a study of the phosphate mineral kapundaite NaCa(Fe ³⁺)₄(PO₄)₄(OH)₃· 5(H₂O) using SEM/EDX and vibrational spectroscopic methods" by Frost et al. (2014)

Abstract

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