Trachybasalt

Trachybasalt is a volcanic rock with a composition between trachyte and basalt. Minerals in trachybasalt include alkali feldspar, calcic plagioclase, olivine, clinopyroxene and likely very small amounts of leucite or analcime. Trachybasalt is a basalt with high alkali content (5 to 7% Na2O + K2O, see TAS diagram). ...
Found on http://en.wikipedia.org/wiki/Trachybasalt

Trachybasalt

An extrusive rock intermediate in composition between trachyte and basalt.
Found on http://midju.tripod.com/glossary.html

Trachybasalt

An extrusive rock intermediate in composition between trachyte and basalt.
Found on http://volcano.oregonstate.edu/education/glossary.html
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