• journal_title：European Journal of Mineralogy
• Contributor：Alain DECARREAU ; Sabine PETIT ; Philippe VIEILLARD ; Nathalie DABERT
• Publisher：E. Schweizerbart'sche Verlagsbuchhandlung Science Publishers
• Date：2004-
• Format：text/html
• Language：en
• Identifier：10.1127/0935-1221/2004/0016-0085
• journal_abbrev：Eur J Mineral
• issn：0935-1221
• volume：16
• issue：1
• firstpage：85
• section：Articles

Aegirine is synthesized at temperatures as low as 200°C in the system Si, Fe, Na, H₂O. Aegirine is mixed with a poorly crystallized 2:1 ferric phyllosilicate. At lower temperature, only 2:1 phyllosilicates are synthesized. A thermodynamic approach shows that the synthesized aegirine is in equilibrium with ferripyrophyllite, and that the stability field of aegirine at lower temperature is strongly reduced by a 2:1 phyllosilicate with a tetrahedral charge due to tetrahedral substitutions of Si for Fe³⁺.