C—red, brown, H—7.5 Irregular grains or Garnet Group
yellow, green, Cl—poor masses; sometimes as (Ca,Mn,Fe,Mg)₃
black, white F—even 12-, 24-, and 36-sided (Al,Cr)₂(SiO₄)₃
crystals; abundant in
glacial sands and Lake
Michigan beach sands;
common in metamorphic
rocks