Geode Rocks With Crystals Inside

Geodes derived from the greek word γεώδης meaning earth like are geological secondary formations within sedimentary and volcanic rocks geodes are hollow vaguely spherical rocks in which masses of mineral matter which may include crystals are secluded.

Geode rocks with crystals inside.

Shells tree branches roots and other organic materials often decay away to leave a void for the formation of mineral materials. And depending on the minerals that make up the geode different geodes will contain different kinds of crystals such as amethyst agate and quartz. These dugway geodes have bands of blue and pink. The geode at the left and the one at the top of the page are both dugways from utah.

All geodes are not created equal the first one is quite hollow but for a nice layer of medium sized blue crystals. Geodes in sedimentary rocks are usually found in limestones dolomites and calcareous shale in these deposits a gas filled void can serve as the opening for geode formation. The colors come from the different minerals that flowed through the bubble so many millions of years ago. Over time as mineral rich water seeps into the rock it beings to deposit tiny crystals on the sides the hollow cavity.

They are typically formed when air bubbles inside of volcanic rock form hollow cavities. The term geode is derived from the greek word geoides which means earthlike a geode is a round rock which contains a hollow cavity lined with crystals. The crystals are formed by the filling of vesicles in volcanic and sub volcanic rocks by minerals deposited from hydrothermal.