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- Thunderegg abstract "A thunderegg (or thunder egg) is a nodule-like rock, similar to a filled geode, that is formed within rhyolitic volcanic ash layers.Thundereggs are rough spheres, most about the size of a baseball—though they can range from less than an inch to over a metre across. They usually contain centres of chalcedony which may have been fractured followed by deposition of agate, jasper or opal, either uniquely or in combination. Also frequently encountered are quartz and gypsum crystals, as well as various other mineral growths and inclusions. Thundereggs usually look like ordinary rocks on the outside, but slicing them in half and polishing them may reveal intricate patterns and colours. A characteristic feature of thundereggs is that (like other agates) the individual beds they come from can vary in appearance, though they can maintain a certain specific identity within them. Thunderegg is not synonymous with either geode or agate. A geode is a simple term for a rock with a hollow in it, often with crystal formation/growth. A thunderegg on the other hand is a specific geological structure. A thunderegg may be referred to as a geode if it has a hollow in it (see illustration of Gehlberg specimen), but not all geodes are thundereggs because there are many different ways for a hollow to form. Similarly, a thunderegg is just one of the forms that agate can assume.".
- Thunderegg thumbnail ThundereggOR.jpg?width=300.
- Thunderegg wikiPageExternalLink Thundereggs.
- Thunderegg wikiPageExternalLink geologic-snowflake-hunters-flock-to-oregon-for-thundereggs.
- Thunderegg wikiPageExternalLink StateRockThunderegg.html.
- Thunderegg wikiPageID "1283839".
- Thunderegg wikiPageLength "5757".
- Thunderegg wikiPageOutDegree "57".
- Thunderegg wikiPageRevisionID "669143267".
- Thunderegg wikiPageWikiLink Africa.
- Thunderegg wikiPageWikiLink Agate.
- Thunderegg wikiPageWikiLink Argentina.
- Thunderegg wikiPageWikiLink Australia.
- Thunderegg wikiPageWikiLink Baseball_(ball).
- Thunderegg wikiPageWikiLink Canada.
- Thunderegg wikiPageWikiLink Category:Cascadian_folklore.
- Thunderegg wikiPageWikiLink Category:Gemstones.
- Thunderegg wikiPageWikiLink Category:Igneous_rocks.
- Thunderegg wikiPageWikiLink Category:Minerals.
- Thunderegg wikiPageWikiLink Category:Symbols_of_Oregon.
- Thunderegg wikiPageWikiLink Chalcedony.
- Thunderegg wikiPageWikiLink Crook_County,_Oregon.
- Thunderegg wikiPageWikiLink France.
- Thunderegg wikiPageWikiLink Geode.
- Thunderegg wikiPageWikiLink Geologist.
- Thunderegg wikiPageWikiLink Germany.
- Thunderegg wikiPageWikiLink Gypsum.
- Thunderegg wikiPageWikiLink Jasper.
- Thunderegg wikiPageWikiLink Jefferson_County,_Oregon.
- Thunderegg wikiPageWikiLink List_of_U.S._state_minerals,_rocks,_stones_and_gemstones.
- Thunderegg wikiPageWikiLink Malheur_County,_Oregon.
- Thunderegg wikiPageWikiLink Mexico.
- Thunderegg wikiPageWikiLink Mineral.
- Thunderegg wikiPageWikiLink Mount_Hood.
- Thunderegg wikiPageWikiLink Mount_Jefferson_(Oregon).
- Thunderegg wikiPageWikiLink Nodule_(geology).
- Thunderegg wikiPageWikiLink Opal.
- Thunderegg wikiPageWikiLink Oregon.
- Thunderegg wikiPageWikiLink Oregon_Field_Guide.
- Thunderegg wikiPageWikiLink Oregon_Legislative_Assembly.
- Thunderegg wikiPageWikiLink Percolation.
- Thunderegg wikiPageWikiLink Poland.
- Thunderegg wikiPageWikiLink Quartz.
- Thunderegg wikiPageWikiLink Rhyolite.
- Thunderegg wikiPageWikiLink Rhyolite_lava.
- Thunderegg wikiPageWikiLink Rice_Northwest_Museum_of_Rocks_and_Minerals.
- Thunderegg wikiPageWikiLink Rock_(geology).
- Thunderegg wikiPageWikiLink Romania.
- Thunderegg wikiPageWikiLink Silica.
- Thunderegg wikiPageWikiLink Silicon_dioxide.
- Thunderegg wikiPageWikiLink Soil.
- Thunderegg wikiPageWikiLink Sphere.
- Thunderegg wikiPageWikiLink Structural_geology.
- Thunderegg wikiPageWikiLink Thunderbird_(mythology).
- Thunderegg wikiPageWikiLink Turkey.
- Thunderegg wikiPageWikiLink Volcanic_ash.
- Thunderegg wikiPageWikiLink Wasco_County,_Oregon.
- Thunderegg wikiPageWikiLink Wheeler_County,_Oregon.
- Thunderegg wikiPageWikiLink File:Black_rock_desert_thunderegg.JPG.
- Thunderegg wikiPageWikiLink File:Esterel-agate.jpg.
- Thunderegg wikiPageWikiLink File:Friend_ranch-thunderegg.JPG.
- Thunderegg wikiPageWikiLink File:Gehlberg_Geode.JPG.
- Thunderegg wikiPageWikiLink File:Thunderegg.jpg.
- Thunderegg wikiPageWikiLink File:ThundereggOR.jpg.
- Thunderegg wikiPageWikiLinkText "Thunderegg".
- Thunderegg wikiPageWikiLinkText "thunderegg".
- Thunderegg hasPhotoCollection Thunderegg.
- Thunderegg wikiPageUsesTemplate Template:About.
- Thunderegg wikiPageUsesTemplate Template:Citation_needed.
- Thunderegg wikiPageUsesTemplate Template:Reflist.
- Thunderegg subject Category:Cascadian_folklore.
- Thunderegg subject Category:Gemstones.
- Thunderegg subject Category:Igneous_rocks.
- Thunderegg subject Category:Minerals.
- Thunderegg subject Category:Symbols_of_Oregon.
- Thunderegg hypernym Rock.
- Thunderegg type Agent.
- Thunderegg type Object.
- Thunderegg comment "A thunderegg (or thunder egg) is a nodule-like rock, similar to a filled geode, that is formed within rhyolitic volcanic ash layers.Thundereggs are rough spheres, most about the size of a baseball—though they can range from less than an inch to over a metre across. They usually contain centres of chalcedony which may have been fractured followed by deposition of agate, jasper or opal, either uniquely or in combination.".
- Thunderegg label "Thunderegg".
- Thunderegg sameAs m.04p_c2.
- Thunderegg sameAs Q7799136.
- Thunderegg sameAs Q7799136.
- Thunderegg wasDerivedFrom Thunderegg?oldid=669143267.
- Thunderegg depiction ThundereggOR.jpg.
- Thunderegg isPrimaryTopicOf Thunderegg.