Effect of Ca content and SiO2 activity on augite + olivine equilibria

The Ca contents of coexisting augite and olivine are strongly correlated with the activity of silica through the equilibrium: Ca2SiO4 + SiO2 = Ca2Si2O6 [La in olivine Wo in augite]. In turn, the Ca contents affect the distribution of Mg and Fe between augite (clinopyroxene) and olivine. Details of t...

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Veröffentlicht in:	The American mineralogist 1994-12, Vol.79 (11-12), p.1123-1124
Hauptverfasser:	Davidson, Paula M, Lindsley, Donald H
Format:	Artikel
Sprache:	eng
Schlagworte:	alkaline earth metals augite calcium chain silicates clinopyroxene metals Mineralogy nesosilicates olivine group orthosilicates phase equilibria pyroxene group silicates
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