Its unit cell is approximately a combination of two vertically stacked basic NiAs - type cells of pyrrhotite , where the top cell is diagonally shifted .
Troilite has hexagonal structure ( Pearson symbol hP24 , Space group P - 62c No 190 ) .
Troilite 's unit cell is approximately a combination of two vertically stacked basic NiAs - type cells of pyrrhotite , where the top cell is diagonally shifted .
Troilite has hexagonal structure ( Pearson symbol hP24 , Space group P - 62c No 190 ) .