Laboratory analysis of archaeological artifacts using X-ray Fluorescence spectrometry

Shackley, M. Steven

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UC BerkeleyArchaeological X-ray Fluorescence ReportsTitleAn Energy-Dispersive X-Ray Fluorescence Analysis of Obsidian Artifacts from AZ T:4:392 (ASM), Central ArizonaPermalinkhttps://escholarship.org/uc/item/3xh4130kAuthorShackley, M. StevenPublication Date2004-05-26Supplemental Materialhttps://escholarship.org/uc/item/3xh4130k#supplementaleScholarship.org Powered by the California Digital LibraryUniversity of California                                 Department of Anthropology            232 Kroeber Hall    University of California    Berkeley, CA  94720-3710 LETTER REPORT (ADDENDUM)  AN ENERGY-DISPERSIVE X-RAY FLUORESCENCE ANALYSIS OF OBSIDIAN ARTIFACTS FROM AZ T:4:392 (ASM), CENTRAL ARIZONA  26 May 2004  John Rapp Logan Simpson Design, Inc. 51 West Third Street Tempe, AZ 85281  Dear John,  Quite typical for sites of this time period, the artifacts were produced from Vulture and Government Mountain obsidian (Shackley 1995, 2005; Table 1 here).  The samples were analyzed with a Spectrace (ThermoNoran) QuanX EDXRF spectrometer in the Archaeological XRF Laboratory, University of California, Berkeley.  Specific instrumental methods can be found at http://www.swxrflab.net/anlysis.htm, and Shackley (2005).  Analysis of the USGS RGM-1 standard indicates high machine precision for the elements of interest (Govnidaraju 1994; Table 1 here).        Sincerely,    M. Steven Shackley, Ph.D. Director       VOICE: (510) 642-2533 INTERNET: shackley@berkeley.edu http://www.swxrflab.net/       REFERENCES CITED Govindaraju, K. 1994 1994 Compilation of Working Values and Sample Description for 383 Geostandards.  Geostandards Newsletter 18 (special issue).  Shackley, M.S.   1995  Sources of Archaeological Obsidian in the Greater American Southwest: An Update and Quantitative Analysis.  American Antiquity 60:531-551.    2005 Obsidian: Geology and Archaeology in the North American Southwest.  University of Arizona Press, in press.             Table 1.  Elemental concentrations for the archaeological sample.   All measurements in parts per million (ppm).  Sample Ti Mn Fe Rb Sr Y Zr Nb Source AZT-4-392-25 1141 379 6561 118 35 13 124 22 Vulture AZT-4-392-26 774 587 8201 100 71 19 74 52 Government Mtn AZT-4-392-150 1196 418 7112 137 46 14 123 18 Vulture AZT-4-392-17 1150 398 7031 126 45 16 122 19 Vulture AZT-4-392-183 1032 447 7374 140 41 11 129 29 Vulture RGM1-S1 1640 304 13207 152 112 21 217 9 standard   

An Energy-Dispersive X-Ray Fluorescence Analysis of Obsidian Artifacts from AZ T:4:392 (ASM), Central Arizona

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An Energy-Dispersive X-Ray Fluorescence Analysis of Obsidian Artifacts from AZ T:4:392 (ASM), Central Arizona

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