strigovite

\\ˈstrigəˌvīt\ noun (-s)

Etymology: German strigovit, from Striegau, Silesia (now Strzegom, Poland) + German -it -ite

: a mineral Fe₃(Al,Fe)₃Si₃O₁₁(OH)₇ consisting of a basic silicate of iron and aluminum of the chlorite group and occurring in dark green crystalline incrustations