Major-oxide, minor-oxide, and trace-element geochemical data from rocks collected in the Chistochina mining district, Mount Hayes Quadrangle, Alaska, in 2005-2009
Description
Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a geological field survey, including mapping and sampling in the Chistochina mining district in the Mount Hayes A-2 and A-3 quadrangles, Alaska, from June 30 to July 15, 2009. The fieldwork provides basic information critical to building an understanding of Alaska's geology and is part of an integrated program of airborne geophysical surveys followed by geological mapping. During 2009, 57 rock samples were collected for geochemical trace-element analysis, 107 rock samples were collected for whole rock (major- and minor-oxide and petrogenetically important trace elements) analyses, and 2 samples were collected for analysis of non-carbonate carbon content. Additionally, 288 polished rock slabs were analyzed for whole rock and petrogenetically important trace elements. This report also contains geochemical trace-element analyses from the Mount Hayes A-2 Quadrangle, Alaska, for 359 rock samples collected by International Tower Hill Mines Ltd. (ITH) from July 2005 through August 2008 as part of the Chisna Project. These data were kindly donated to DGGS in 2009 to aid DGGS investigations.