NGT42-1/2-02
1962
On sub solidus relations of silicates. IV. The systems åkermanite - sodium-gehlenite and gehlenite - sodium gehlenite.
42
1, 2
31-44

The melting phenomena of the mixed crystal series åkermanite - sodium-gehlenite and gehlenite - sodium-gehlenite are given. The lower breakdown relations of this system are principally the same as those of the system åkermanite -gehlenite but the presence of an exsolution area modify the picture somewhat. The åkermanite breakdown relations of Harker and Tuttle (1956) are revised. The decomposition products of åkermanite at 6 kbar water pressure are hydrovesuvianite and clinopyroxene.

0029-196x
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