noun
- Plural of franklinite; a mineral consisting of zinc oxide and iron oxide, typically black or dark gray, found in certain ore deposits.
Usage: mineralogy; technical
Examples
- Franklinites are an important ore of zinc in certain geological formations.
- The museum's mineral collection includes several specimens of franklinites from New Jersey.
- Geologists identified franklinites in the rock samples using X-ray diffraction.
- Franklinites typically occur in metamorphic deposits associated with other zinc minerals.