By contrast, some minerals rarely develop perfect geometric forms. Many of these, however, develop other characteristic shapes useful for identification. Some minerals tend to grow equally in all three dimensions, whereas others tend to be elongated in one direction, or flattened if growth in one direction is suppressed. Commonly used terms to describe these and other crystal habits include equant (equidimensional), bladed, fibrous, tabular, prismatic, platy, blocky, and botryoidal. Some of these habits are pictured in Figure 2.14.