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History:This collection of geologic, mine, and related maps was compiled and used by S. Warren Hobbs for his research on the Coeur d’alene Mining District, Idaho - Professional Paper 478 (1965).The Coeur d’Alene Study:General geology of the Coeur d’Alene district, one of the larger lead-, zinc-, and silver-producing areas of the world, is presented. The geology was remapped at a scale of 1:24,000 and compiled on five maps from west to east as follows: Smelterville, Kellogg, Wallace, Mullan, and Pottsville. Bedrock, primarily the Precambrian Belt Series which forms the host rock for the ore, is a thick conformable geosynclinal group of fine-grained clastics. Igneous rocks are principally two groups of small monzonitic...


    map background search result map search result map USGS S. Warren Hobbs Coeur d'Alene Map Collection USGS S. Warren Hobbs Coeur d'Alene Map Collection