Large Dugway Geode (with stand) Marcasite with Barite and Pyrite where silicates bond with the

where silicates bond with the cellulose structure of the wood

Attached to the base of the stem are roots which some types of Crinoids use to attach themselves to the sea bed

Mosasaurs gave birth to live young

and Ruby is still considered one of the four traditional precious stones

Large Dugway Geode (with stand) Marcasite with Barite and Pyrite where silicates bond with theWhen volcanic activity occurred in what is now western Utah some 8 million years ago, deposits of the igneous rock rhyolite formed. As the rock cooled, pockets of volcanic gases became trapped and formed cavities. The circulation of groundwater allowed silica and other minerals to precipitate into these cavities and form layers of agate and crystal quartz over the course of millions of years. Today the result is a beautiful and unique variety of