Re: Layer formed quartz?
The first thing that came to mind when I read "Layer Formed Quartz" is selenite (transparent gypsum), often called ising glass, and your description of the rock also suggests ising glass to me.
Following is a link to an article from the Sept. 1943 issue of The Journal of the Mineralogical Society about selenite:
However, I don't know if any selenite is found in the area you described. The only place I've ever seen any was at Hell's Half Acre in Comanche County, Kansas, and at another location within about 30 miles from there:
From Jerry Ferrin - March 17, 2008 at 06:48:28