General Information
Abstract: On-going compositional studies of gold from placer and lode deposits and occurrences in western Yukon provide new insights into their nature and origin. Two main compositional populations are present in placer and lode deposits in the Klondike District. The dominant population has high fineness and low mercury content, and appears to be mainly derived from lode sources in the Lone Star, King Solomon Dome and lower Gold Run Creek areas. A second population of low fineness, high-mercury-content gold is derived from lode sources on the left limit of Eldorado Creek and in the headwaters of Bear and Last Chance creeks. Placer gold in the Sixtymile District was not derived from epithermal vein occurrences like those in the Sixtymile River valley but rather has compositions more similar to Klondike-type metamorphogenic veins. Placer gold in Scroggie Creek in southern Stewart River map area appears to be derived from intrusion-related vein occurrences.
Authors: Mortensen, J.K., Chapman, R., LeBarge, W.P., and Crawford, E.
Keywords: Klondike District, Sixty Mile River, Stewart River
NTS Mapsheet(s): 115N15, 115N16, 115O13, 115O14, 116C01, 116C02, 116C07, 116C08
Citation: Mortensen, J.K., Chapman, R., LeBarge, W.P., and Crawford, E., 2006. Compositional studies of placer and lode gold from western Yukon: implications for lode sources. In: Yukon Exploration and Geology 2005, Emond, D.S., Bradshaw, G.D., Lewis, L.L., and Weston, L.H. (eds.), Yukon Geological Survey, p. 247-255.
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Location Map
NTS Mapsheet(s): 115N15, 115N16, 115O13, 115O14, 116C01, 116C02, 116C07, 116C08
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Related Publications
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YEG2005 | Contained By | Emond, D.S., Bradshaw, G.D., Lewis, L.L. and Weston, L.H. (eds.) | Yukon Exploration and Geology 2005 |