"Orthohombic, hemimorphic. Crystals usually tabular parallel to the brachypinacoid. They show prism…
"Orthorhombic. Crystals resemble closely those of barite. Commonly tabular parallel to the base or prismatic…
"Orthorhombic. Usually in small tabular crystals with hexagonal outline. Striated parallel to the brachy-axis.…
"Orthohombic. Habit prismatic, showing usually a combination of prism with large angle, brachypinacoid,…
"Orthohombic. In prismatic crystals terminated by pyramids, domes, and basal plane." — Ford, 1912