Last Updated: Jan 30, 2017 Views: 45
I do not have an immediate answer to your question, but I hope to send some clues to you.
Please take a look at the publications of Robert H. Brill.
Many are available in full-text on the Corning Museum of Glass website: http://www.cmog.org/research/scientific
His three-volume set, Chemical Analyses of Early Glasses, may be read online:
Brill, Robert H. Chemical analyses of early glasses. Corning, N.Y.: Corning Museum of Glass, 1999-2012. 3 v.
Dr. Brill has retired from the museum; if you wish to contact him directly, his email address is: email@example.com
I am also sending a bibliography of some resources about ancient glass techniques.
If you wish to obtain copies of library items, please contact your local library. The Rakow Research Library is a member of the Online Computer Library Center (OCLC). Your library can contact us through OCLC or they may send an Interlibrary Loan form to us by e-mail. We send copies of articles and will also loan certain books if a second copy is available in the library collection. Books are loaned for a four week period. For further information, please see our web page: http://www.cmog.org/research/library/visit/services/loan.
Meanwhile, I will take a look for native American beads and early enameling techniques.
Can you come to the Rakow Library to continue your research?
Please let me know if I am on the right track.