Welcome to biology-online.org! Please login to access all site features. Create account.
Log me on automatically each visit
Edit page |
Page history |
(Science: geology) An igneous rock,usually light gray in colour and breaking with a rough surface. It consists chiefly of orthoclase feldspar with sometimes hornblende and mica.
Origin: Gr. Rough, rugged: cg. F. Trachyte.
Please contribute to this project, if you have more information about this term feel free to edit this page
This page was last modified on 3 October 2005, at 21:16. This page has been accessed 1,499 times. What links here
| Related changes
| Permanent link
© Biology-Online.org. All Rights Reserved.
Register | Login
| About Us | Contact Us | Link to Us | Disclaimer & Privacy | Powered by CASPION