Typical forms of epidote crystals; p prism faces, m, n, x, and y beveled edges of the prism, o octahedral faces
Typical forms of tourmaline
A side view; B and C ends to show terminations; p prism faces, m beveling of prism edges, r a low rhombohedron on the end, s the opposite rhombohedron, b basal face, and the other faces represent bevelings
Plate 48
A group of barite crystals
Outline of the typical tabular barite crystal
