|Services||XRF analysis of obsidian artifacts.|
XRF analysis of fine-grained volcanic (FGV) artifacts.
Identification of geologic source of analyzed artifacts.
|Contact||Alex N. Nyers, Program Director|
Northwest Research Obsidian Studies Laboratory
5060 SW Philomath Blvd. #331
Corvallis, OR 97333-4845
WWW: www.obsidianlab.com or www.sourcecatalog.com
|Prices||1-5 samples .......... $50 per sample
6-50 samples .......... $38 per sample
51-100 samples .......... $35 per sample
100+ samples .......... $32 per sample
10% discount for projects with no written report (tables and data only).
35% surcharge for rapid turnaround (guaranteed two weeks or less) projects.
|Elements Used||Rb, Sr, Y, Zr, Nb, Ti, Mn, Fe, Ba|
|Sample Size and Preparation||Minimum diameter of 10 mm and minimum thickness of 1.5 mm are preferred.
Samples should be clean and free of painted numbers on one surface if possible.
|Geographic Coverage||Obsidian sources in Oregon, California, Washington, Idaho, Nevada, Wyoming, New Mexico, Arizona, Utah, Colorado, Montana, South Dakota, British Columbia, and the Western Mediterranean are well covered; incomplete but improving coverage for Alaska, and other scattered areas in the Mediterranean, Mexico, Middle East, and Pacific islands. Fine-grained volcanic (FGV) source identification is available although is now limited primarily to artifacts from the Lake Tahoe area of east-central California.|
|Source List Available?||Yes - all obsidian sources included in the Northwest Research reference database are listed at the lab Web site. Descriptions of many of the sources can also be found at the U. S. Obsidian Source Catalog.|
|Reporting||Report with data tables suitable for standalone use or as an appendix (paper and Adobe Acrobat).|
|Payment||Invoices are normally sent upon completion of project - payment may be made with cash, check, M.O., P.O., PayPal, Visa, or MasterCard.|
|Comments||Reports can be customized upon request. We maintain a very active research program and are constantly adding new sources to our reference database. We will analyze limited quantities of geologic obsidian source material at no charge for sources that we do not currently have in our reference collection. If you would like to take us up on this offer, please contact us for details. We are also interested in geoarchaeological studies of geologic sources of obsidian and will provide analytical support for graduate students with an interest in this topic.|