Now... I'm doing a paper (a small essay) for a class about Ixtepeque's obsidian distribution, already have info on this... but I haven't been able to get my claws on images of the obsidian from Ixtepeque, cores or artifacts (both are preferred).
And I also need to confirm Ixtepeque's obsidian physical characteristics. Just have a little description of it. I don't really need the chemical composition of it.
Have searched "Ixtepeque obsidian", and "obsidiana de Ixtepeque" (English and Spanish, with and without "") in google search and google images, and only have results on this page (in Spanish).
I know there is a book "Cristales y obsidiana prehispánicos" by Mari Carmen Serra Puch, Felipe R. Solís Olguín and Michel Zabé... that my -sometimes really hated- university library DOES NOT HAVE.
Just a note: I have no access to jstor and archaeology journals (Ancient Mesoamerica, Latin American Antiquity, etc.). I have to FAMSI, Redalyc and Asociación Tikal, but still haven't found images that SAY they are from Ixtepeque obsidian.
Thanks for helping me out!!