Septarian rough half geode chunk, fluorescent, unfinished, 3lbs10 oz. (rc42295)
Septarian rough half geode
Origin: Muddy Creek, Utah
Characteristics: Unfinished smooth face, light brown to dark brown concretions surrounded by golden brown. one of a kind unique nodules that contain small calcite bands. Cut for 3 or 4 thick slabs or polish it and display it on a stand. I can see the picture of a prehistoric animal in the stone, I see his horn, eye, mouth, ear, 3 head spikes, a tail and 2 legs, can you see what I see.
Septarian is an amalgam of aragonite, brown calcite and naturally occurring concretions. This example glows with UV light, the gray edge and outside skin is purple, the light colored center is a pink surrounded by purple. I have a small uv flashlight I get my colors from.
This item will be sent in a USPS medium flat rate box. Any excess postage paid over $12.80 will be refunded. This can also be picked up in Windsor, Calif.
Approx size :4 3/4" x 5 1/2" x 1 3/4 Weight: 3 lb, 10oz.
Septarian Nodules were formed during the Cretaceous period, 50 to 70 million years ago. Decomposing sea life killed by volcanic eruptions, had a chemical attraction for the sediment around them, forming mud balls. The ocean receded leaving mud balls the dried and cracked. As the ocean receded, the balls were left to dry and crack. Septarian nodules contained cavities or crack called "septaria". Eventually calcite seeped into the cracks and formed calcite crystals filling the cracks. The area between the Calcite and the clay (Bentonite) transformed into Aragonite which is the dark brown crystal layer. The mud was replaced with limestone.
It is not without a few pits and fracture lines but basically it's intact except where pieces already broke off. The lower bottom, back and edge broke off way before I got this, you can see this in the pictures. I sanded the bottom so it could stand on it's own..
Septarian Nodules are said to bring calming energies and can bring feelings of joy and spiritual uplifting. Septarian Nodules are used to enhance and nurture communication with groups, making it much easier to speak clearly and kindly in group settings .
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My pictures: I use a full spectrum 45 w light bulb - photography photo CFL 5500K. It's a daylight balanced pure white light.
My first 2 pictures (front and back) show items wet, this brings out the colors you should see in a finished product. Other pictures show items dry, this should show imperfections (small cracks or pits) if there are any. Contact us if you have any questions. Translucent items will have at least one picture taken with a backlight.
An 18 mm dime or 24mm quarter and 10 mm background squares in some pictures should help you with image sizing.
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