What is a serpentinite in geology ?

Serpentinite : definition

A serpentinite is a green rock deriving by meteoric or hydrothermal weathering, or by metamorphism, from ultrabasic magmatic rocks, mainly peridotites, and occasionally from basic rocks.

Serpentinites consist almost entirely of minerals from the serpentine group : dominant antigorite, dark green, traversed by greenish veinlets of chrysotile, accompanied by a little iron oxide, generally in the form of spinels. The olivines and sometimes the pyroxenes of the original rock frequently appear as residues within an antigorite framework : the serpentinite then takes on a porphyritic appearance. The rock, green in color, with light green and dark green areas, reminiscent of snake skin (hence its name), has a characteristic smooth feel.


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