This report discusses the distribution of intrusion related and other mineral occurrences in the Whitehorse map-area, Yukon. Mineral occurrences recorded in the Archer, Cathro and Associates, Ltd., Northern Cordillera Mineral Inventory have been classified according to deposit type and principal commodities then plotted on a lithologic map (1:250 000 scale) which is in part an updated version of the Geological Survey of Canada four mile map for the Whitehorse map-area by Wheeler (1961).
New information added to the map includes: geology and geochronology of the Bennett Lake cauldron subsidence complex; geology of the Atlin Terrane; reinterpreted geology of the adjacent Laberge map-area and part of the Bennett and Atlin map-areas; a reclassification of geologic units in southern Yukon; reconnaissance mapping, classification and geochronology of granitic rocks in the Whitehorse map-area; and detailed stratigraphy of the Upper Triassic Lewes River Group with special emphasis on the Whitehorse Copper Belt and the associated Cu-Fe skarn deposits.