Ankaramite
Ankaramite is volcanic rock type of mafic composition. It is a dark porphyritic variety of basanite containing abundant pyroxene and olivine phenocrysts.[1] It contains minor amounts of plagioclase and accessory biotite, apatite, and iron oxides.
Igneous rock | |
Composition | |
---|---|
Mafic:pyroxene, olivine and plagioclase. |
Its type locality is Ankaramy in Madagascar. It was first described in 1916.[1]
References
- http://rmcg.unam.mx/17-1/(3)Ortiz.pdf Archived 2012-02-27 at the Wayback Machine Luis Enrique Ortiz Hernández, An Arc Ankaramite Occurrence in Central Mexico, Revista Mexicana de Ciencias Geológicas, volumen 17, número 1 2000, p. 34-44
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.