5.1" Polished, Multi-Colored Calcite Filled Septarian Geode "Egg" - Madagascar
5.1" Polished, Multi-Colored Calcite Filled Septarian Geode "Egg" - Madagascar
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$375.00 USD
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Description: This is an absolutely gorgeous calcite crystal filled septarian geode from Madagascar. It has been polished into the shape of an egg, revealing the incredible calcite crystal formation within. It has a gorgeous pattern due to the aragonite and calcite filling in cracks, and a cavity lined with stunning green, white and yellow calcite crystals.
Septarian or septarian nodules are concretions containing angular cavities or cracks, called "septaria" which have become filled with calcite and aragonite. A concretion is a hard, compact mass of rock that often forms around decaying organic matter. In the case of septarian nodules the concretions formed around decaying sea-life in a marine environment.
The exact mechanism for how the cracks form in the concretions is a mystery. One possible mechanism is the dehydration of the clay-rich core of a concretion causing it to shrink and crack. Another is the cracks being due to the expansion of gases produced by the decay of organic matter within a concretion. Earthquakes have also been suggested as yet another mechanism.
The cracks in the concretions are then filled in with minerals such as calcite (yellow) and aragonite (brown) and sometimes pyrite causing the very interesting patterns, which have often been described as Dragon's Skin. They are frequently found as geodes with hollow, calcite crystal filled cavities. More rarely the fossils that originally started the formation of the concretion are still preserved in the septarian.
The exact mechanism for how the cracks form in the concretions is a mystery. One possible mechanism is the dehydration of the clay-rich core of a concretion causing it to shrink and crack. Another is the cracks being due to the expansion of gases produced by the decay of organic matter within a concretion. Earthquakes have also been suggested as yet another mechanism.
The cracks in the concretions are then filled in with minerals such as calcite (yellow) and aragonite (brown) and sometimes pyrite causing the very interesting patterns, which have often been described as Dragon's Skin. They are frequently found as geodes with hollow, calcite crystal filled cavities. More rarely the fossils that originally started the formation of the concretion are still preserved in the septarian.
Size: 130mm x 95mm x 80mm, 1.57kG (5.1" x 3.75" x 3.2", 3.46 lbs)
Spiritual Meaning: The spiritual meaning of Septarian is all about wholeness, unity, and oneness. It encourages you to find balance within yourself and to connect with the spiritual realm. Septarian helps you to connect with others, promoting cooperation and understanding.
