The following is a list of rock types recognized by petrologists. There is no agreed number of specific types of rocks. Any unique combination of chemical composition mineralogy grain size texture or other distinguishing characteristics can describe rock types. Additionally different classification systems exist for each major type of rock.[citation needed] There are three major types of rock sedimentary metamorphic and igneous. They are all identified by their texture streak and location among other factors.

Support Language:


- العربية
- català
- Čeština
- Deutsch
- English
- Español
- eesti
- فارْسِى
- suomi
- français
- עִבְרִית
- Magyar
- հայերեն
- italiano
- japanese
- ქართული
- lietuvių
- Nederlands
- Norsk
- polski
- Portuguךs
- slovensk‎
- Svenska