Manganite

Ilfeld, Nordhausen, Nordhausen District, Thuringia/Thüringen  Germany

Specimen size: 5.7 × 4.1 × 3.4 cm = 2.24” × 1.61” × 1.34”
Main crystal size: 2.6 × 1.6 cm = 1.02” × 0.63”