noun
- A black mineral consisting of zinc, iron, and manganese oxides, found chiefly in New Jersey and used as an ore of zinc.
Usage: mineralogy; technical
Examples
- Franklinite is an important ore mineral for zinc extraction.
- The specimen of franklinite showed the characteristic black metallic luster.
- Franklinite deposits were historically mined in Franklin, New Jersey.
- Geologists identified franklinite in the rock sample using X-ray diffraction.
- The franklinite ore contained significant quantities of manganese oxide.