Thunder Eggs               Type of Rock: CONCRETION
RocksForKids.com


Thunder Egg - whole and cut in half
Jefferson County, Oregon  USA

Thunder Egg - whole and cut in half

Brushy Canyon, Chiricahuas Mts.,
Cochise County, Arizona USA
Gaspe Peninsula Thundereggs / Geodes

In Mont Lyall, Quebec, thundereggs can be collected at a fee collecting site. The thundereggs are found in rhyolite and are beige in colour on the outside. Many have raised veins (like the stitching on a baseball). Some are completed filled with agate in colours of beige, yellow and orange. Others look more like geodes in that the centres are hollow and quartz crystals with distinct terminations point inwards.


 

Agate Thunderegg  Mont Lyall, Sainte-Anne-des-Monts, Gaspesie- Iles-de-la-Madeleine, Quebec CANADA


Solid Thunderegg with quartz crystals intergrown

Agate Thunderegg  Mont Lyall, Sainte-Anne-des-Monts, Gaspesie- Iles-de-la-Madeleine, Quebec CANADA

Hollow Thunderegg - also known as a geode

Where to collect these thundereggs:
Mount Lyall Agates Mine
Description:
Discover, in this rare volcano (350 million years), fines stones (quartz, amethyst, cornelian, jasper and more).

We provide equipment and training. Bring good shoes and your food. Picnic area on site and two diamond saws for cutting your rock. You can also visit a small museum presenting minerals and gems and a gift shop. One of the best family activity! Average length of activity : 2 to 3 hours.

http://www.mont-lyall.com/

Thunder Egg - Mexico


Double Thunder Egg
Zacetacas MEXICO

 

 

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