Beach Stones with White Lines 12

Beach Stones with White Lines 12 – Natural pattern of crystalline calcite-filled cracks in a beach stone derived from the inner core of a Birchi Nodule from the Shales-with-Beef Member of the Charmouth Mudstone Formation of the Lower Lias in the Jurassic Period at Charmouth, Dorset, England. This inner core of a Birchi Nodule is also known as a septarian nodule.