pilotaxitic

pilotaxitic

[¦pī·lō·tak′sid·ik]
(geology)
Pertaining to the texture of the groundmass of a holocrystalline igneous rock in which lath-shaped microlites (usually of plagioclase) are arranged in a glass-free felty mesh, often aligned along the flow lines.
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References in periodicals archive ?
The volcanic cones of phase 1 and phase 2 occur as volcanic lithic fragments of olivine basalts that belong to the pyroclastic materials and clastogenic flows or as ejecta which show porphyritic vitrophric to pilotaxitic texture and vesicular structure.
Lithic fragments are dominantly polycrystalline quartz (quartzite) with subordinate volcanic clasts of pilotaxitic basalt and andesite, porphyritic rhyolite and dacite, and recystallized felsic crystal turf (White and Barr in press).