Description: A half piece, intact septarian nodule unearthed in an ash cone near Mt. Carmel, Utah. Pictures show wet and dry. Dimensions:5.93 pounds / 2691 gRoughly 6.5" x 4.5" x 3" Cutting, polishing, slabbing, lapidary. Septarian Nodules Utah septarian nodules are a type of geode that are found in sedimentary rocks about 15 miles east of Zion National Park, Utah. They were formed 50–70 million years ago during the Cretaceous period on an ancient sea floor. The nodules are made up of calcite, aragonite, and limestone. They are formed when decomposing sea life, especially seashells, attract the sediment around them, forming mud balls. As the ocean receded, the balls dried and cracked, and the oceans returned to deposit more sediment. Aragonite then formed on the edges of the cracks, and yellow calcite crystals formed in the spaces. The name comes from the Latin word septurn, which means "to divide", as the aragonite divides the calcite from the clay. The mineral and crystal-filled cracks in the nodules are known as "septa". Septarian nodules are often described as looking like dragon's skin. They are frequently found as geodes with hollow, calcite crystal-filled cavities. Sometimes larger, crystal-filled voids will remain at the center of the nodules, which would technically make them geodes.
Price: 59.3 USD
Location: Carlsbad, California
End Time: 2024-12-26T22:50:17.000Z
Shipping Cost: 16.99 USD
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Item Specifics
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Shape: Natural
Country/Region of Manufacture: United States
