• SEPTARIAN Nodule Bookend Set


    Utah Septarian Nodules (geode)

    Utah Septarian Nodules are found 15 miles east of Zion National Park, Utah. They are formed in an ancient sea floor during the cretaceous period 50-70 million years ago. As they weathered out of the gray clay hills, at one time they could be picked up on the surface. Now bulldozers are required for their extraction, usually 20-30 ft. underground.

    Some geodes are filled completely with calcite, while others are hollows showing calcite crystals.

    The composition of the Septarian is as follows:

    Yellow Center.......Calcite

    Brown Lines......Arogonite

    Grey Rock....Limestone

    White or clear.......Barite

    One half measures at 7 7/8 x 5 5/6 x 2 1/2 inches thick.