DEPOSITS OF THE CADDO GAP AND DE QUEEN QUADRANGLES, ARKANSAS. By HUGH D. MISER. INTRODUCTION. The high prices...little-exploited manganese deposits of westcentral Arkansas. These deposits are found at intervals in a belt...quadrangles, Arkansas and Oklahoma. 12 miles wide, extending west-southwestward from Pulaski County, at the...the center of the State, to Polk County, on the west border. Eecent exploitation, begun in 1915 and still...Caddo Gap and De Queen quadrangles, in western Arkansas. The location of the mountainous districts of |