P3Y4R1O1L1U1S1I1T1E1S1
16 points
PYROLUSITES is validvalid
PYROLUSITE, [n]
PYROLUSITE, native manganese dioxide, a black or dark-grey tetragonal mineral with a metallic lustre [n]
PYROLUSITE, [n]
PYROLUSITE, native manganese dioxide, a black or dark-grey tetragonal mineral with a metallic lustre [n]