stripes
The volcanic neck of Cerro Cacalote on the Plaines de Chicontepec consists of a basanite of augite and olivine phenocrysts in a groundmass of bytownite and anorthite, titaniferous augite, nepheline and magnetite. Other volcanic edifices in the vicinity of Chicontepec consist of tephrites and basanites with nepheline, analcime and aegirine.
ROBIN, C. 1976. El vulcanismo de las plancies de la Huasteca (Este de Mexico). Datos geoquimicos y petrograficos. Boletin Universidad Nacional Autonoma de Mexico. Instituto de Geologia, 96: 55-92.
ROBIN, C. 1982. Relations volcanologie - magmatologie - geodynamique: application au passage entre volcanismes alcalin et andesitique dans le sud Mexicain. Annales Scientifiques de l'Universite de Clermont-Ferrand II: Geologie Mineralogie, 70: 1-503