The Little Bird occurrence is a sulfide-bearing, pyroxene skarn in limestone of the Lower Devonian, Barren Ridge Limestone, a unit of the Dillinger sub-terrane (Bundtzen, Harris, and Gilbert, 1997). The skarn occurs near a weakly mineralized, granite porphyry stock (Brewer and others, 1992). Discontinuous semi-massive and disseminated pyrrhotite with chalcopyrite, sphalerite, and galena occur in a 200 meter by 700 meter skarn zone. The grades and widths of the mineralization in the skarn are variable, but samples contain up to 4.5 percent copper, 1.7 percent lead, 11.4 percent zinc, 426.1 grams of silver per ton , and 0.33 percent tungsten (Brewer and others, 1992). The deposit was explored by Anaconda Minerals Company from 1981-1983.