Soufflé may be composed of many different types of minerals.

Ron Greeley video
Ron Greeley audio --

Many of these rocks that have these interesting names are named from their shapes. Soufflé for example, reminded some of the team members of a soufflé. Many of these rocks have very interesting spectral characteristics, that is they have color signatures that may mean they are composed of different kinds of minerals. So what we've done is to identify many of these rocks like Soufflé, as targets for the rover to go and visit and measure their chemical compositions. So many of the names we hear about are for the rocks that are high priority targets for further exploration.