490 CTS PAIR SPLIT POLISHED SERPATIAN NODULES MS 218

Description

septarian ‘nodule’ from Morocco.

Size  51 x47x 25  mm

Septarian nodules are rounded ‘geode-like’ and are usually filled with some form of calcite and sometimes aragonite.

The nodules can be hollow in the center and have sharply formed white to colored calcite crystals or the ‘hollow’ interior can be completely filled with solid calcite.

These nodules were formed during the Cretaceous period, 50 to 70 million years ago.