Large Cystoid Geode Whole Fossil Geology w Info Card

Large Cystoid Geode Whole Fossil Geology w Info Card

Overview

Large Cystoid Geode Whole Fossil Geology w Info Card

Warnings

Large Cystoid Geode Whole Fossil Geology w Info Card

Regular price $17.99 In Stock
or
Reviews Read Reviews

Overview

Large Cystoid Geode Whole Fossil Geology w Info Card

Warnings

Product Details

Large Cystoid Geode Whole Fossil
Learning Geology
Information Card Included
 
These nifty geodes are every little boys' dream and are great for hands on learning of basic Earth geology. 
Crack these geodes open and find out what's inside!
 
Each cystoid geode comes with free geological info and safety instructions.

A cystoid geode is now an extinct animal  that lived at the bottom of ancient seas 438 to 408 million years ago.  When a cystoid died, its body was covered with sand and sediment on the ocean floor and sometimes became fossilized.  When the cystoid became fossilized, it also became a rock with a hollow center geologists refer to as a geode. 
When the seas receded, the hollow cavity of the fossilized cystoid became filled with silica-rich ground water that caused quartz to form inside. 

Picture is representative of the specimen you will receive.  Each rock is unique and will vary in shape, size and appearance.  No two rocks will be exactly alike.

Origin: North America

  • Every Cystoid Geode is different and will vary in size, shape, color, etc. 
  • Average size is between 4" to 6"

Additional Information

SKU

SBVR433

Weight

1.5 lb

​ ​