What is basanite in geology ?

Basanite : definition

Streckeisen diagrams (or QAPF diagrams) - Classification of plutonic and volcanic rocks
Basanite is a black volcanic rock with a microlitic texture and often porphyritic, similar in appearance to basalt, consisting of calcium plagioclase (labrador most often), feldspathoid, augite, brown hornblende, olivine and sometimes biotite. The presence of olivine differentiates basanite (which contains it) from tephrite (which does not contain it).

The nature of the feldspathoid makes it possible to distinguish varieties : the usual basanite is with dominant nepheline, analcime and hauyne ; the ankaratrite is nepheline and pyroxene ; limburgite with augite, olivine and magnetite. Basanite forms flows generally associated with olivine basalts.


This service is used to secure web forms of our website and required if you want to contact us. By accepting it you agree to Google's privacy policy: https://policies.google.com/privacy

Google Analytics

Google Analytics is a service used on our website that tracks, reports traffic and measures how users interact with our website content in order for us to improve it and provide better services.


Our website allows you to like or share its content on Facebook social network. By activating and using it you agree to Facebook's privacy policy: https://www.facebook.com/policy/cookies/


Integrated videos provided by YouTube are used on our website. By accepting to watch them you agree to Google's privacy policy: https://policies.google.com/privacy


Integrated tweets and share services of Twitter are used on our website. By accepting and using these you agree to Twitter's privacy policy: https://help.twitter.com/en/rules-and-policies/twitter-cookies