noun
- Plural of gahnite; a dark zinc-iron spinel mineral, typically black or dark green, found in metamorphic rocks.
Usage: mineralogy; technical
Examples
- Gahnites are commonly found in zinc-rich metamorphic deposits.
- The geologist identified gahnites in the rock sample under the microscope.
- Gahnites form under high-temperature conditions in metamorphic environments.
- The dark crystals were confirmed to be gahnites through X-ray diffraction analysis.