Pressure-induced hydration in zeolite tetranatrolite

Yongjae Lee, Joseph A. Hriljac, John B. Parise, Thomas Vogt

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The tetranatrolite-paranatrolite transformation has remained a key problem in understanding the paragenesis of zeolites in the natrolite family. It is accepted that when paranatrolite, approximate formula Na16-xCaxAl16+xSi24-x O80.24H2O, is removed from an aqueous environment and exposed to the atmosphere, it loses water and transforms to tetranatrolite, Na16-xCaxAl16+x Si24-xO80.nH2O (n ≤ 24). Here we show that this transformation is not only reversible, but that tetranatrolite exhibits two sequential pressure-induced hydrations leading first to paranatrolite and then to a superhydrated tetranatrolite above 0.2 and 3.0 GPa, respectively. We have previously reported similar behavior for the corresponding system with an ordered Si/Al distribution, i.e., natrolite itself, however the ordered version of paranatrolite exists over a much smaller pressure range. The pressure-induced transformations of natrolite and tetranatrolite thus further supports the supposition that paranatrolite is a distinct mineral species, with a pressure-stability field dependent upon composition.

Original languageEnglish
Pages (from-to)247-251
Number of pages5
JournalAmerican Mineralogist
Volume91
Issue number2-3
DOIs
Publication statusPublished - 2006 Feb 1

Fingerprint

Zeolites
natrolite
hydration
zeolite
Hydration
paragenesis
zeolites
Minerals
transform
minerals
atmospheres
Water
atmosphere
mineral
Chemical analysis
water

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

Cite this

Lee, Yongjae ; Hriljac, Joseph A. ; Parise, John B. ; Vogt, Thomas. / Pressure-induced hydration in zeolite tetranatrolite. In: American Mineralogist. 2006 ; Vol. 91, No. 2-3. pp. 247-251.
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Lee, Y, Hriljac, JA, Parise, JB & Vogt, T 2006, 'Pressure-induced hydration in zeolite tetranatrolite', American Mineralogist, vol. 91, no. 2-3, pp. 247-251. https://doi.org/10.2138/am.2006.1847

Pressure-induced hydration in zeolite tetranatrolite. / Lee, Yongjae; Hriljac, Joseph A.; Parise, John B.; Vogt, Thomas.

In: American Mineralogist, Vol. 91, No. 2-3, 01.02.2006, p. 247-251.

Research output: Contribution to journalArticle

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