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:
White or clear.......Barite