answersLogoWhite

0

A geode forms in a pocket or hollow circular shaped opening in sedimentary or igneous rock. The opening could be created by a gas bubble, a rotted organism, or by other means. Mineral filled solutions seep into the opening and gradually form crystals from the hole lining inward. If the hole completely infills, it becomes a nodule. Because the minerals that form inside the pockets are often silicate, they are resistant to weathering. This means that the rock surrounding the pocket may not be as resistant to weathering as the geode pocket. Once the surrounding rock has weathered and eroded, what remains on the surface is the geode or nodule. Once an empty circular shaped hole it is now a rock formation unto itself.

User Avatar

Wiki User

7y ago

Still curious? Ask our experts.

Chat with our AI personalities

MaxineMaxine
I respect you enough to keep it real.
Chat with Maxine
ProfessorProfessor
I will give you the most educated answer.
Chat with Professor
TaigaTaiga
Every great hero faces trials, and you—yes, YOU—are no exception!
Chat with Taiga
More answers

A geode forms when minerals are deposited on the inside of a cavity in a rock, typically a bubble in volcanic rock or a hollow space in sedimentary rock. Over time, layer upon layer of minerals build up and create the crystals that we see when the geode is cracked open.

User Avatar

AnswerBot

10mo ago
User Avatar

Add your answer:

Earn +20 pts
Q: How does a geode form?
Write your answer...
Submit
Still have questions?
magnify glass
imp