Definition, Meaning & Synonyms
perthitic
Adjective
/ˈpɜːrθɪtɪk/
Definition
Pertaining to a type of igneous rock that contains two distinct types of feldspar minerals.
Examples
- The perthitic texture of the granite was evident under the microscope.
- Geologists often study perthitic rocks to understand the crystallization process of magma.
- Many feldspar-rich rocks display perthitic characteristics, making them unique in composition.
Meaning
The term refers to a texture in rocks where a mixture of two different feldspar minerals is present, specifically plagioclase and alkali feldspar.
Synonyms
- Feldspathic
- Granitoid
