Huebnerite

MnWO

Hardness: 5-5.5
Specific Gravity: 7.1-7.5
Huebnerite is a manganese rich tungsten ore. It is named for the German mineralogist, Adolph Huebner. Tungsten is used as a filament in light bulbs and it is used in carbide drilling equipment. Other tungsten ore minerals that are somtimes associated with Huebnerite:
Continue reading “Huebnerite”