Experimental results indicate that autoassociative neural networks provide a robust method for the identification of clusters in process data. Cluster identification is accomplished by extracting a single feature from each multivariate data vector. The ranked features can be used to construct a feature curve, which is subsequently used as a basis for partitioning of the data space. In three case studies, involving two sets of ore samples, and a set of flotation froth features, with 11, 13 and 5 variables respectively, the clusters identified with the neural network appeared to be better than those obtained by conventional means.