Dugway Geode (with stand) 03d2c319f27a57c561cccbcbb7bc93ff Although the species habitat was

Although the species habitat was mainly the sea

That would put them comparable in size to the largest of modern-day Kodiak and Polar bears

kamacite and taenite

but prior to the opening of Pit 11 in the mid-1950s

or the very rare red topaz

Dugway Geode (with stand) 03d2c319f27a57c561cccbcbb7bc93ff Although the species habitat wasWhen 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