Trends in Ochre Geochemistry from Instrumental Multi-Elemental Analysis

 

Rachel S. Popelka-Filcoff (Department of Chemistry, University of Missouri–Columbia and the Archaeometry Lab at the University of Missouri Research Reactor Center (MURR))  (now NIST)

J. David Robertson (Department of Chemistry, University of Missouri–Columbia and the University of Missouri Research Reactor Center (MURR))

Michael D. Glascock (Archaeometry Lab at the University of Missouri Research Reactor Center (MURR))

Christophe Descantes (Research Corporation of the University of Hawaii)

 

 

 

 

Human- altered ochres are common artifacts on archaeological sites worldwide, in both art and mortuary contexts.  While the archeological contexts and some cultural meaning are well known, the geochemical and provenance information on ochres is not well documented. Known for its precision, accuracy and reliability, INAA (instrumental neutron activation analysis) is a powerful analytical method for archaeometric studies.  This poster presents analytical data from INAA that describe geochemical trends in the sources of archaeological ochres. Multivariate statistics of the data point to trends in the inter- and intra-source variability of ochres obtained from several locations in the U.S. These trends in geochemistry lead to a better understanding of ancient ochre procurement.

 

 

 

Author: Rachel S. Popelka-Filcoff

Mentor:            Robert Greenberg and Richard Lindstrom

Division:           Analytical Chemistry

Laboratory:      Chemical Science and Technical Laboratory

Building:           235

Room #:           B169

Mail Stop:        8395   

Phone:              301-975-4611

Fax:                  301-208-9279

Email:               rachel.popelka-filcoff@nist.gov

Sigma Xi:          Member of Sigma Xi

Category:         Chemistry