Leucite- and Feldspar-Bearing Systems - Origin of Potassium-rich Silica-deficient Igneous Rocks - page 304

If the composition of the liquid lies in the silica-rich side of the join diop-
side final product should be quartz latite (E 2 , Fig. 9.12 ).

Holmes and Harwood (1937) described rock type of trachyandesite

sanidine anorthite, the

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latite series
from the Sabyno area of Birunga volcanic province, where the prominent rock types
are potassium-rich ma

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c and ultrama c varieties.