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Pistacitic epidote

Calcic zeolites, prehnite, pumpellyite, and pistacitic epidote are not mutually exclusive, but are related by a series of reactions such as... [Pg.326]

Direct exchange. 30-100% exchange. P=2-4 kbar. Epidote composition is pistacite (Fe/Fe+Al) = 0.29. Experiments indicate fractionation factor is independent of temperature in the 300-650°C temperature range. [Pg.79]

Direct exchange of epidote with H2 gas. 71-91% exchange. P = 0.3-2 bars. At 300°C, epidote-H20 fractionations derived from these results are approximately 35%o more negative than those reported in the direct epidote-H20 exchange experiments of Graham et al. (1980) and Chacko et al. (1980). Epidote composition is pistacite (Fe/Fe+Al) = 0.30. Direct exchange. 35-100% exchange. P= 4 kbar. Zoisite composition is pistacite (Fe/Fe+Al) = 0.03. [Pg.79]

See other pages where Pistacitic epidote is mentioned: [Pg.341]    [Pg.876]    [Pg.341]    [Pg.876]    [Pg.107]    [Pg.136]    [Pg.329]    [Pg.331]    [Pg.70]    [Pg.152]   
See also in sourсe #XX -- [ Pg.320 ]



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