Description
Formula: (Fe2+)WO4 – (Mn2+)WO4
System: Monoclinic
Locality: Yaogangxian Mine, Yaogangxian W-Sn ore field, Chenzhou, Hunan Province, China
Habit: Euhedral crystals
Color: Graphite gray
Luster: Submetallic
Weight: 911 g
Dimensions: 10.6 x 7 x 7.8 cm