It is in the same genus as the common platy and the swordtail. These properties are due to fine grained non-aligned crystals with platy or prismatic habits. Predominant crystal faces (prism - prismatic, pyramid - pyramidal and pinacoid - platy). Huntite crystallizes in the trigonal system and typically occurs as platy crystals and powdery masses. The Bell Canyon Formation consists of "un-fossiliferous, dark-gray to black, platy, fine-grained limestone". This occurs particularly on platy minerals, especially micas. The mica group represents 37 phyllosilicate minerals that have a layered or platy texture. Other polymorphs in the serpentine group may have a platy habit. Antigorite and lizardite are the polymorphs with platy habit. The clade is characterized by having an intersected crossed platy shell structure. The platy bark is dark brown or black. This halloysite is characterized by layered-tubular and platy structure. One of their main characteristics is the presence of intersected crossed platy shell structure. In platy structure, the units are flat and platelike. It passes through Platy, Veroia, Edessa, Amyntaio, and Florina.