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Septarian Nodule Buffalo, Large |
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Code: MIN-SNBER
Price:$149.50
Shipping Weight: 114.00 ounces
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Septarian Nodules were formed during the Cretaceous period
(50 to 70 million years ago), when the Gulf of Mexico
reached what is now Southern Utah. Sediment formed around
decomposing sea life, creating mud balls that contained
high concentrations of bentonite. As the ocean receded, the
balls were left to dry, crack, and shrink. Calcite from
shells was carried down into cracks in the mud balls,
forming crystals, and a thin wall of calcite was
transformed into aragonite, separating the bentonite heavy
clay exteriors from the calcite centers.
This
spectacular Septarian Nodule Buffalo shows the
characteristic mineral composition and is approximately 7-1/2" wide, 5-1/2" tall, and 1-1/2" thick. The yellow areas are calcite, the brown lines
are aragonite, and the grey rock is limestone. A natural cavity shows the inside of the buffalo, which is lined with dogtooth calcite, while the back side is solid. A unique solution for a Father's Day gift or adding to your rock and mineral collection. Scroll down to view Related
Products.
Please note: this specimen requires special packaging, so extra charges have been added to the shipping weight. |
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