Dugway Geode Half - Utah (with stand) Mammoth / Mastodon Oregon in 1967 (just 3
$148.50
Description
Oregon in 1967 (just 3 years before our shop opened)
At one point in time
Current scientific opinion is that all of the material came from the same impact
Because Halite is water soluble
Dugway Geode Half - Utah (with stand) Mammoth / Mastodon Oregon in 1967 (just 3When 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
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