This U.S. Bureau of Mines report assesses the resource potential of trace metals present in commercial ti mineral concentrates. Metals of greatest interest are those defined as "strategic and critical" by the U.S. Congress in 1981. Metals of interest in ti mineral concentrates are cb, cr, ta, th, u, V, and zr. Commercially available ti mineral concentrates were studied. Characterization and analysis of major and minor constituents were performed by x-ray diffraction, neutron activation, inductively coupled plasma emission, atomic absorption, and classical wet chemical techniques. Of the metals investigated, the cb, ta, and V content of some concentrates may be a significant potential resource, depending on their amenability to recovery.