Author of the Month :  The Official GrahamHancock.com forums
Join us at this forum every month for a discussion with famous popular authors from around the world. 
Welcome! Log InRegister
Rob Potter of Johnson Matthey has seen it, and they have tested it for other minerals, and there are no additives or modifiers. The background clear glass is pure SiO2, as is LDG, which noone doubts is of impact origin. True, silica glass can be made synthetically, but needs ovens that go above 1600C, and a very good reason to do so. Plus the holes in the tubes must be natural.

Options: ReplyQuote


Subject Views Written By Posted
Hongshan Skulls - glass and other 2408 drdavidanderson 23-Feb-18 14:26
Re: Hongshan Skulls - glass and other 455 Andrew_W 25-Feb-18 05:58
Re: Hongshan Skulls - glass and other 455 drdavidanderson 25-Feb-18 11:19
Re: Hongshan Skulls - glass and other 416 JFG 28-Feb-18 16:17
Re: Hongshan Skulls - glass and other 436 JFG 27-Feb-18 02:05
Re: Hongshan Skulls - glass and other 466 drdavidanderson 27-Feb-18 08:07
Re: Hongshan Skulls - glass and other 422 JFG 28-Feb-18 16:01
Re: Hongshan Skulls - glass and other 806 drdavidanderson 28-Feb-18 16:44


Sorry, only registered users may post in this forum.