🪨 Geode facts
| Age | Varies; many come from Devonian to Cretaceous sediments |
|---|---|
| Origin & sources | Southern Morocco around the Erfoud and Taouz area. |
| Composition | Chalcedony or limestone shell with quartz crystals (sometimes dyed) |
How it forms
Silica-rich groundwater filled cavities in sedimentary nodules, growing quartz inward. These geodes are widely sold whole as 'break-your-own' geodes.
Mineral data: see Quartz.
🌍 Where it's found
- Type locality
- Notable source / deposit
- Country of origin
Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.
Learn more
Geode / nodule
Orange
RootCrown
Healing crystal



