During the field season of 1950 a corundum occurrence in sec. 22, T. 11 N., R. 4 E., of Valley County, 5 miles east of Smiths Ferry, was brought to the attention of the writer by Mr. Wayne Bowman, of Garden Valley, Idaho The occurrence was briefly visited by Mr. Bowman, the writer, and Mr. C. C. Popoff of the U. S. Bureau of Mines, in August of 19S0. This occurrence is unique among known occurrences in Idaho in that the mineral lies in its original matrix; it probably represents the type of material which is the original source of the corundum found in Idaho gold placers.

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