Are the 'cave' minerals archerite (K,NH4)H2PO4 and biphosphammite (K,NH4)H2PO4 identical? A molecular structural study

被引：10

作者：

Frost, Ray L. ^{[1
]}

Xi, Yunfei ^{[1
]}

Palmer, Sara J. ^{[1
]}

机构：

[1] Queensland Univ Technol, Chem Discipline, Fac Sci & Technol, Brisbane, Qld 4001, Australia

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2011年 / 1001卷 / 1-3期

基金：

澳大利亚研究理事会;

关键词：

Archerite; Biphosphammite; 'Cave' minerals; Brushite; Mundrabillaite; Dihydrogen phosphate; RAMAN-SPECTRA; PHOSPHATE MINERALS; SPECTROSCOPY; ARSENATE; KH2PO4; KDP; CRYSTAL;

D O I：

10.1016/j.molstruc.2011.06.015

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The molecular structure of the mineral archerite ((K,NH4)H2PO4) has been determined and compared with that of biphosphammite ((NH4,K)H2PO4). Raman spectroscopy and infrared spectroscopy has been used to characterise these 'cave' minerals. Both minerals originated from the Murra-el-elevyn Cave, Eucla, Western Australia. The mineral is formed by the reaction of the chemicals in bat guano with calcite substrates. Raman and infrared bands are assigned to H2PO4-. OH and NH stretching vibrations. The Raman band at 981 cm(-1) is assigned to the HOP stretching vibration. Bands in the 1200-1800 cm(-1) region are associated with NI-L; bending modes. The molecular structure of the two minerals appear to be very similar, and it is therefore concluded that the two minerals are identical. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：49 / 55

页数：7

共 29 条

[1]

[Anonymous], 1974, INFRARED SPECTRA MIN

[2]

[Anonymous], NIPPON BUTSURI GAKKA

[3]

[Anonymous], P 8 INT C

[4]

[Anonymous], P 2 INT C PHOSPH COM

[5]

[Anonymous], MINERAL MAG

[6]

Anthony J.W., 2000, Handbook of mineralogy: Arsenates, phosphates, vanadates. arsenates, phosphates, V4

[7] ARCHERITE, (K,NH4)H2PO4, A NEW MINERAL FROM MADURA WESTERN AUSTRALIA [J].

BRIDGE, PJ .

MINERALOGICAL MAGAZINE, 1977, 41 (317) :33-35

[8] Raman spectroscopy of hydrogen-arsenate group (AsO3OH) in solid-state compounds: cobalt mineral phase burgessite Co2(H2O)4[AsO3OH] 2•H2O [J].

Cejka, Jiri ;

Sejkora, Jiri ;

Bahfenne, Silmarilly ;

Palmer, Sara J. ;

Plasil, Jakub ;

Frost, Ray L. .

JOURNAL OF RAMAN SPECTROSCOPY, 2011, 42 (02) :214-218

[9] RAMAN-SPECTRA OF THE NAH2PO4 CRYSTAL [J].

CHOI, BK ;

LEE, MN ;

KIM, JJ .

JOURNAL OF RAMAN SPECTROSCOPY, 1989, 20 (01) :11-15

[10] VIBRATION SPECTRA OF KDP IN PARAELECTRIC AND FERROELECTRIC PHASES [J].

COIGNAC, JP ;

POULET, H .

JOURNAL DE PHYSIQUE, 1971, 32 (8-9) :679-&

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