Message Index Start New Topic Photo Gallery FAQ and Use Tips Bob's Rock Shop

Posted in response to Layer formed quartz? from Glenn on March 13, 2008 at 22:05:12:

Re: Layer formed quartz?

Hi, Glenn,

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

Message: 66227

Message Index Start New Topic Photo Gallery FAQ and Use Tips Bob's Rock Shop

Agate   Alabaster   Alunite   Angelite   Assortments   Astrophyllite   Aventurine   Block Simulant   Cacoxenite   Calcite   Chalcedony   Charoite   Chrysocolla   Chrysoprase   Coral (Fossilized)   Dinosaur Dung (Coprolite)   Dolomite   Eudialite   Fossil Shell (Coquinite)   Goldstone   Graphic Stone   Hypersthene (Bronzite)   Indian Paint Rock   Ivoryite   Jade   Jasper   Jet   Lapis Lazuli   Larimar   Lepidolite   Marble   Obsidian   Petrified Wood   Pipestone   Printstone   Psilomelane   Quartz   Rainbow Pyrite   Rhodonite   Rhyolite   Ruby-in-Fuchsite   Seraphinite (Clinoclore)   Serpentine   Shell   Soapstone   Sodalite   Tiger Eye   Todolite   Travertine   Tumbling Rough   Turquoise   Unakite  

Bob Keller