Thanks for your very informative contributions. It is also rumoured that Petrie found tremendous stocks of a white substance in lab like environment in the temple at Mt. Horeb. Some researchers suggest that this was the site where an Egyptian cult that was open only to the royal family studied the egyptian "craft". The book of Jasher also alludes to Moses's 2nd father in law Jethro being akin to the high priest of Mt Horeb and from whom the ten commandments were issued. Interesting that the ten commandments are synonymous with the ist ten spells of the egyptian book of the dead.
Keep em rollin