Link: https://rockseeker.com/septarian-nodules/
Description: WEBNov 8, 2022 · Septarian nodules are a type of concretion where mudstone of some kind is interspersed with calcite or another carbonate-rich mineral. The calcite portions follow the pattern of radiating cracks, which occur during the unique creation of these formations. Septarian nodules consist of at least two minerals in every case.
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Link: https://rockhoundingmaps.com/septarian-nodules/
Description: WEBMarch 28, 2023. 8 Comments. Septarian nodules, also known as dragon stones, are highly sought after by rock hounds and mineral collectors because they formed millions of years ago in a unique way. These dark mud balls are distinctive stones with yellow, gray, and brown tones in large art-like bands. The grays and browns come from dead algae ...
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Link: https://rockchasing.com/septarian-nodules/
Description: WEBUpdated January 12, 2024. Septarian nodules are some of the most fascinating and beautiful geological creations that you can find. Sometimes called “Lightning Stones” they might look like ordinary rocks on the outside, but inside, they reveal a beautiful pattern that tells a story of how our planet has changed over millions of years.
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Link: https://en.wikipedia.org/wiki/Concretion
Description: WEBSeptarian concretions (or septarian nodules) are carbonate-rich concretions containing angular cavities or cracks (septaria; sg. septarium, from the Latin septum "partition, separating element", referring to the cracks or cavities separating polygonal blocks of hardened material).
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Link: https://geologyscience.com/gemstone/septarian/
Description: WEBNov 18, 2023 · Septarian, also known as Septarian Nodule or Dragon Stone, is a distinctive type of sedimentary rock that is characterized by its unique, striking appearance. It is composed primarily of a combination of minerals, including calcite, aragonite, and limestone, with additional components such as clay minerals, gypsum, and barite.
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Link: https://rockandmineralplanet.com/all-about-septarian-uses-properties-color-and-worth/
Description: WEBAug 30, 2019 · by Jamey T. What is Septarian? Septarian is a grey limestone rock where the cracks and larger cavities were filled with calcite, barite, aragonite, and other minerals. Septarian is often referred to as “Dragon Stone” or a “Dragon Egg”, and are often called septarian nodules.
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Link: http://www.bedrockfossils.com/seno.html
Description: WEBSeptarian Nodules. Septarian Nodules are concretions that have a series of radiating cracks, crossed by a series of concentric cracks to form a “turtle-back” appearance. They are also known the "Dragon Stone Healing Stone." Ball-like Sepatrian Nodules began their life as sedimentary slime at the bottom of a Cretaceous Sea 50 to 70 million ...
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Link: https://www.stonemania.co.uk/crystals/s/septarian-nodule
Description: WEBSeptarian correctly known as a septarian nodule or concretion is distinctive, takes on a high polish and is classed as a rock not a mineral. Septarian nodules are made up primarily of three different minerals. The yellow crystals are calcite, the brown lines are aragonite or siderite and the outer shell is limestone .
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Link: https://www.slsc.org/septarian-nodule/
Description: WEBMay 31, 2023 · Called a septarian nodule, this is a fossilized mud bubble formed between 50 and 70 million years ago composed of calcite, aragonite, and a limestone coating. These three minerals form together in a pocket of air creating a sedimentary rock concretion with a …
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Link: http://michrocks.org/info/septarian-nodule.html
Description: WEBA Septarian Nodule starts as a mud ball at the bottom of an ocean. Often forming around a fossil or organic debris. As the mud hardens (a chemical process rather than by evaporation) cracks form and are filled by other materials, often calcite, which gives an interesting contrast between the dark mud stone and the lighter colored calcite.
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