A new biogenic, struvite-related phosphate, the ammonium-analog of hazenite, (NH4)NaMg2(PO4)2·14H2O Yang Hexiong hyang@u.arizona.edu

Hexiong Yang, Livia Martinelli, Flavia Tasso, Anna Rosa Sprocati, Flavia Pinzari, Zhenxian Liu, Robert T Downs, Henry J. Sun

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A new biogenic, struvite-related phosphate, the ammonium analog of hazenite (AAH), ideally (NH4) NaMg2(PO4)2·14H2O, has been found in cultures containing the bacterial strain Virgibacillus sp.NOT1 (GenBank Accession Number: JX417495.1) isolated from an XVII Century document made of parchment. The chemical composition of AAH, determined from the combination of electron microprobe and X-ray structural analyses, is [(NH4)0.78K0.22]NaMg2(PO4)2·14H2O. Single-crystal X-ray diffraction shows that AAH is orthorhombic with space group Pmnb and unit-cell parameters a = 6.9661(6), b = 25.236(3), c = 11.292(1) Å, and V = 1985.0(3) Å3. Compared with hazenite, the substitution of NH4+for K+results in a noticeable increase of the average A-O (A = NH4++K+) bond length and the unit-cell volume for AAH, as also observed for struvite vs. struvite-K. Both infrared and Raman spectra of AAH resemble those of hazenite, as well as struvite. Our study reveals that AAH forms only in cultures with Na-bearing solutions and pH below 10.0. No AAH or hazenite was found in experiments with the K-bearing solutions, suggesting the necessity of a Na-bearing solution for AAH formation.

Original languageEnglish (US)
Pages (from-to)1761-1766
Number of pages6
JournalAmerican Mineralogist
Volume99
Issue number8-9
DOIs
StatePublished - Aug 1 2014

Fingerprint

struvite
Ammonium Compounds
phosphates
ammonium
phosphate
analogs
Bearings (structural)
Bond length
ammonium phosphate
cells
Raman scattering
electron probe analysis
Substitution reactions
Single crystals
chemical composition
substitution
x rays
infrared spectra
Infrared radiation
X-ray diffraction

Keywords

  • Ammonium phosphate
  • biomineral
  • crystal structure
  • hazenite
  • infrared and Raman spectra
  • struvite-type materials
  • X-ray diffraction

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

A new biogenic, struvite-related phosphate, the ammonium-analog of hazenite, (NH4)NaMg2(PO4)2·14H2O Yang Hexiong hyang@u.arizona.edu. / Yang, Hexiong; Martinelli, Livia; Tasso, Flavia; Sprocati, Anna Rosa; Pinzari, Flavia; Liu, Zhenxian; Downs, Robert T; Sun, Henry J.

In: American Mineralogist, Vol. 99, No. 8-9, 01.08.2014, p. 1761-1766.

Research output: Contribution to journalArticle

Yang, Hexiong ; Martinelli, Livia ; Tasso, Flavia ; Sprocati, Anna Rosa ; Pinzari, Flavia ; Liu, Zhenxian ; Downs, Robert T ; Sun, Henry J. / A new biogenic, struvite-related phosphate, the ammonium-analog of hazenite, (NH4)NaMg2(PO4)2·14H2O Yang Hexiong hyang@u.arizona.edu. In: American Mineralogist. 2014 ; Vol. 99, No. 8-9. pp. 1761-1766.
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abstract = "A new biogenic, struvite-related phosphate, the ammonium analog of hazenite (AAH), ideally (NH4) NaMg2(PO4)2·14H2O, has been found in cultures containing the bacterial strain Virgibacillus sp.NOT1 (GenBank Accession Number: JX417495.1) isolated from an XVII Century document made of parchment. The chemical composition of AAH, determined from the combination of electron microprobe and X-ray structural analyses, is [(NH4)0.78K0.22]NaMg2(PO4)2·14H2O. Single-crystal X-ray diffraction shows that AAH is orthorhombic with space group Pmnb and unit-cell parameters a = 6.9661(6), b = 25.236(3), c = 11.292(1) {\AA}, and V = 1985.0(3) {\AA}3. Compared with hazenite, the substitution of NH4+for K+results in a noticeable increase of the average A-O (A = NH4++K+) bond length and the unit-cell volume for AAH, as also observed for struvite vs. struvite-K. Both infrared and Raman spectra of AAH resemble those of hazenite, as well as struvite. Our study reveals that AAH forms only in cultures with Na-bearing solutions and pH below 10.0. No AAH or hazenite was found in experiments with the K-bearing solutions, suggesting the necessity of a Na-bearing solution for AAH formation.",
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AU - Tasso, Flavia

AU - Sprocati, Anna Rosa

AU - Pinzari, Flavia

AU - Liu, Zhenxian

AU - Downs, Robert T

AU - Sun, Henry J.

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