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Geodes

Geodes - Cash and Treasures Wiki Use this page to keep an informational log specific to this treasure: The more detailed the inforamtion, the more helpful it will be to other hunters. Click EasyEdit to add what you know. Read about "thunder eggs" on the Cash and Treasures main site

General information on geodes

A Geode is simply a rock with a cavity lined with minerals. The most common types of minerals found in Geodes are quartz and calcite but other mineral species can be found; such as celestite, chalcedony,pyrite, gypsum barite,hematite and many others. Geodes are formed in both sedimentary and igneous rocks, Cavities in the host rock are slowly lined with minerals that seep into the cavity dissolved in rain water. Typically the source of silica for the quartz crystal lining is volcanic ash fall. If the cavity is completely filled with minerals it is no longer a Geode but a Nodule. Geodes can be found in many locations throughout the country wherever limestone rock or rocks of volcanic origen are found.





Where to find it:

What areas of the world are famous for this treasure? If you have first-hand experience with a spot where other treasure hunters can go, enter info here:

GPS Coordinates, if known:
Town/region: Hancock County
State, country: IL
Tips for finding it:
GPS Coordinates, if known:
Town/region:
State, country:
Tips for finding it:


GPS Coordinates, if known:
Town/region: Keokuk
State, country: Iowa

Tips for finding it: Within a 35 mile radius of Keokuk is one of the nation's hottest spots for collecting Geodes. Search the streams, fields, and road cuts in the area. You will find Geodes. Over 30 minerals can be found in the centers, although most of the centers are quartz and calcite.
GPS Coordinates, if known:
Town/region:
State, country:
Tips for finding it:

Tools needed: Shovel, bucket, hand pick, gloves, hat





Special skills needed: Do not break the geodes with a hammer, they can be easily rendered valueless.
Check the weight of a geodes against each other. The lighter geodes are more than likely hollow.


Identification tips: The Keokuk Geodes have a cauliflower appearance to them. This is true with many sedimentary Geodes. Igneous geodes are generally rounder in appearance.




Additional helpful resources:
[include links to websites, book titles, maps, clubs]

Please check out the Iowa National Directory for more information. Also visit the Oregon National Directory for Geodes, (Thunder Eggs)



Recommend a guide:
[If you need a guide, list them here with phone/email and website URL]



Recommend an appraiser
:





Latest page update: made by aubreyreynolds9@gmai , Aug 9 2008, 8:08 PM EDT (about this update About This Update aubreyreynolds9@gmai Edited by aubreyreynolds9@gmai

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