In 1989, the U.S. Bureau of Mines conducted a mineral investigation of the Mallard Study Area near Elk City, Idaho. The study area comprises most of the original Mallard Rare II Area (I-847) plus some additional lands. The investigation is part of an ongoing, multiyear study of north-central Idaho that is being conducted in cooperation with the Idaho geological survey and the U.S. Geological Survey (USGS). The only identified resources are rock suitable for road metal. Five lode prospects and a pyrite-bearing rock quarry, which is operated by the Forest Service for aggregate, were examined for metals. One of the prospects warrants additional exploration for silver in quartz veins, but the chance of finding an economically minable deposit is limited. Several rock and stream sediment samples were anomalous in various metals. Two of the more promising localities for gold and/or other metals are adjacent to a unit of the Frank Church-River of No Return Wilderness that the USGS classified as having a moderate potential for gold deposits related to fossil hot springs.