2.9 Inch Septarian Turtle Back near the Libyan border

near the Libyan border

Mahajanga is a port city on the north coast

Gingko biloba

The color of the stone is dependent on the other minerals or metals contained within it

2.9 Inch Septarian Turtle Back near the Libyan borderSize: 2. 9 x 1. 0 in. Weight: 5. 1 oz This small septarian nodule is perfect for any collection or desktop display! Septarian forms in "nodules." These concretions are essentially fossilized mud bubbles that began forming during the Cretaceous Period between 50 to 70 million years ago. Its name is derived from the word "septum" meaning partition. As you can see in the photos, these specimens are composed of 3 different minerals, calcite (yellow),