Roger Weller, geology instructor
firstname.lastname@example.org copyright 2011-R.Weller
One of the most common crystal shapes for the garnet family of minerals is a
rounded crystal with 24 faces. Each of the faces is close to the shape of a trapezoid
and so this crystal shape is
called a trapezohedron.
Photo is copyright free for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.