Question

What are the hollow ball-like objects in sedimentary rocks?

Answer 1

Geodes. They can be found in some igneous rocks as well. They start as a hollow cavity created by a gas bubble or decaying organism. Mineral rich water seeps into the cavity and crystals form from the outside toward the inside.

Answer 2

The hollow ball-like objects that are found in sedimentary are 'Geodes'.

Step-by-step explanation:

• Some sedimentary rocks have a hollow, roughly spherical cavity right in the middle, making the rock look like a coconut that is cut in two halves.

• The inner surface of a Geode is covered with small non-uniform crystals. The color of these crystals depends on what minerals are the crystals formed of.

• The inner surface of Geodes is usually made of minerals like jasper, quartz, celestite, agate, etc.