Geode

A geode is a geological secondary formation within sedimentary and volcanic rocks. Geodes are hollow, vaguely spherical rocks, in which masses of mineral matter are secluded.

Back to Crystals & Geology →

Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 3.0

ROCKHOUNDRY

Read the stone — minerals, crystals, and the rockhound's field craft.

Get new guides by emailOccasional emails. No spam. Unsubscribe anytime.

InformationAbout Contact Privacy Policy Terms of Service Disclaimer Affiliate Disclosure Cookie Policy

Every entry, image, and fact is drawn from Wikipedia and Wikimedia Commons, used under public-domain and Creative Commons licenses. No content is AI-generated.