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'Latite' is an igneous, volcanic (extrusive) rock, with aphanitic-aphyric to aphyric-porphyritic texture. Its mineral assemblage is usually alkali feldspar and plagioclase (in a ratio < 1:4). Quartz is absent in a feldspathoid-bearing latite, and olivine is absent in a quartz-bearing latite. Biotite, hornblende, pyroxene and scarce olivine or quartz are common accessory minerals.

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Latite rhomb porphyries

See also

Latite rhomb porphyries

'Rhomb porphyry' is a volcanic rock with gray-white large porphyritic rhomb shaped phenocrysts enbedded in a very fine grained red-brown matrix. The composition of rhomb porphyry places it in the trachyte - latite classification of the QAPF diagram.
Not all latites are rhomb porphyries.

See also

★ Igneous rock

★ list of rocks

★ Porphyry