Biotite (Noun)
Meaning
Dark brown to black mica found in igneous and metamorphic rock.
Classification
Nouns denoting substances.
Examples
- Biotite is a common mineral found in igneous and metamorphic rocks, often appearing as dark brown to black flakes.
- The geologist carefully extracted a sample of biotite from the granite outcropping to study its composition.
- The metamorphic rock was characterized by its abundance of biotite, which gave it a distinctive dark color.
- Biotite is often found in association with other minerals, such as quartz and feldspar, in igneous rocks.
- The biotite in the sample was identified by its perfect cleavage and dark brown to black color.