Agates &
Thundereggs
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Thundereggs(Lithophysae)
   The "thunderegg" name was given to the spherical lithophysae nodules by American Natives with a belief that they were leftovers from the thunderous war between the mythological deities. The name "thunderegg" is becoming widely used to describe the nodules containing the geometrically cavities between the rhyolitic shells, and they are found in any rhyolitic bodies (obsidian, perlite, rhyolite and tuffs) which most have been completely decomposed into clay beds.
 Please inform me if you see any information that are outdated or inaccurate. I also would appreciate the links to any online articles related to the locations/claims.
Updated March 2023
What is "Thunderegg" and how did they form?

Thundereggs of New Mexico:
BLM Regulations on Collecting on Public Lands

-Baker & Butler Ranches at Hermanas:

-- Baker Eggs, Updated March 2012
-- Blue Star Updated March 2012
-- Prospect Pits of Bulter Hill(?), Updated July 2012
-- "Lindburg" Thundereggs Updated March 2012
-- West Baker Thundereggs Updated March 2012
-- Orange Star Site Updated April 2012

Section 640 of New Mexico(Leased & maintained by Spanish Stirrup Shop)
--Thundereggs of Section 640 (pictures provided by Lori Coleman) Updated April 2022
----Includes the Blue Ridge, Tavenier Road-Cut, Rabbit-hole,and especially Mineshaft mines.
-- Tavenier Thundereggs (in Section 640), Updated April 2022
-- JA's Little Wash (in Section 640), Updated April 2022
-- Torpedo Beds (in Section 640), Updated April 2022

-Little Florida Mountains, East of Deming:
-- Eggzilla Thundereggs, Updated April 2013
-- LavaCap Thundereggs, May 2016
-- Over the Hill Thundereggs, Updated April 2013
 -- Sky Blue Thundereggs Updated November 2015
-- Neveragain Thundereggs Updated May 2012
-- Rockhound Park Thundereggs Updated May 2012
-- Sugar Bowl Mine Updated April 2012
 -- Sugar Bowl "Sagnetite Hole" Site Updated April 2012
-- Black Queen (also Brickworks &High Rollars) May 2016

  -Other NM Locations:
-- Bioconoid Mine from Radium Springs Updated January 2012
-- Bear Mountain near Silver City Updated April 2012
-- Honey Onyx Thundereggs from Radium Springs, Updated January 2012
-- Pinky Wright Thundereggs near Cotton City, NM, Updated November 2015

Thundereggs of Oregon:
-- Buchanan Updated July 2019
-- Calico Mountains along Oregon/Nevada Border Updated February 2012
-- Calopooia River, Updated November 2015
 -- Desolation Canyon Updated February 2012
-- Donnybrook Updated February 2012
-- Fallen Tree  Updated June 2019
-- Fred Bed Updated February 2012
-- Frieda Bed, Updated November 2015
 -- Friend Ranch Updated March 2012
-- H 2 L (Josephine Beds) Updated February 2012
-- Jeremy Beds Updated February 2012
-- Killer Green Updated March 2023
-- Lucky Strike & Valley View Updated November 2015
-- McDermitt Beds along Oregon/Nevada Border Updated November 2015
-- Mill Creek/Steins Pillar Updated February 2012
-- Pony Creek  Updated May 2016
-- Queens Point Updated February 2012
-- Radford Mine Updated February 2012
-- Richardson Ranch(Priday) Beds, Updated December 2017
-- Rojo Di Bed Updated July 2018
-- Sandy Beds Updated February 2012
-- Secret Ridge (Harney Rim) Updated February 2012
-- Skull Springs/Harper Red Bed  Updated May 2020
-- Star Mountain Sagenite Updated February 2012
-- Succor Creek Updated February 2012
-- Tufa Beds Updated February 2012
-- White Rock Springs, Updated April 2015
 -- White Springs Fir Updated February 2012
-- Yellow Jacket Updated February 2012

-Reference:  History of Thunderegg Collecting in Oregon by George Williams booklet

 Thundereggs From Other States:

-- Alaska: Talkeetna Thundereggs, Updated July 2017
-- Arizona: Muggins Mountains,  Updated December 2017
-- Arizona: Mushroom Rhyolite Thunderegg, May 2016
-- California: Eagle Mountain Updated November 2015
-- California: Lead Pipe Springs of China Lake Updated July 2017
-- California: Wiley Well District, Updated May 2020
              (Includes Hauser Beds, Potato Patches and other beds)
-- Colorado: Del Norte Bed Updated January 2020
-- Idaho: Bruneau Jaspers, Updated February 2012
-- Idaho: Whiskey Creek Jaspers, March 2022
 -- Minnesota & Michigan: Lake Superior Thundereggs, Update January 2017
-- Nevada: 9 Mile Canyon Eggs Updated May 2020,
-- Nevada: Black Desert Eggs, Updated December 2012
-- Nevada: Lake Mead Thundereggs Updated January 2017
-- Nevada: Other Thundereggs of Nevada, Updated July 2017
-- Texas: Mt. Chinco, Updated February 2012
-- Utah: Dugway "Geodes", Updated February 2012
-- Washington: Little Naches River, Updated February 2012

Thundereggs of Canada:
 -- Canada: Mont Lyall, Quebec, Updated February 2012
 -- Canada: Haida Gwaii island of British Columbia, Updated July 2017
-- Canada: Black Dome from British Columbia, Updated July 2018

Thundereggs of Australia:
-- Agate Creek, January 2017
-- Couchy Creek, Updated December 2011
-- Mt. Hay, Updated November 2015
-- Mt. Jerusalem, Updated December 2011
-- Mt. Tamborine, Updated December 2011

Thundereggs of Europe (Russia not included):
-- France:  Frejus Thundereggs Updated September 2020
-- Germany: Spießberg, Thuringia Updated January 2012
-- Germany: Et. Egidien & Hohenstein Updated January 2012
-- Germany: Teufelskanzel (Devil's Puplit), Oberthal, Germany Updated February 2014
-- Germany: Other Thundereggs of Germany, Updated February 2014
-- Poland: Polish Thundereggs Updated January 2012
-- Romania: Romania Thundereggs Updated May 2012
-- Slovakia Republic: Bysta Thundereggs Updated January 2012
-- Turkey: Chubuk Agates & Thundereggs Updated July 2018

Thundereggs of Asia (Russia included):
-- China: Thundereggs from China Updated March 2023
-- Indonesia: Mushroom Agate Cores, Updated November 2012
-- Japan: Japanese Thundereggs Updated January 2012
-- Kazakhstan: Thundereggs of Kazakhstan Updated January 2012
-- Russia: Mustakh Thundereggs of Yakuta Updated July 2016

Thundereggs of Mexico:
-- Lilac Thundereggs (mislabeled as Ascension Thundereggs ) Updated January 2012
-- Cold Mountain "Jasper" Thundereggs, Updated November 2015
-- Coyamo Thundereggs   Updated January 2012
-- Janos (Rainbow) Agates  Updated January 2012
-- Las Choyas & Other Mexican "Coconuts" Updated November 2015
-- Mariposa (Butterfly) Jasper Thundereggs Updated January 2012
-- Mesquite Creek Thundereggs Updated November 2015
-- Red Hot (Berrando) Agates  Updated January 2012
-- "Sagenite" Thundereggs, Updated November 2015
-- SnowBall / Surprise Agates Updated April 2012
-- Trancas "Geodes" Updated February 2012
-- Other Thundereggs of Mexico Updated July 2018

Thundereggs of South America:
-- Ayaleft Thundereggs, Updated April 2012
-- Chubut Thundereggs (several locations). Updated November 2015
-- Rio Colorado Thundereggs (Condor Eggs), Updated December 2011

 Thundereggs from Other Locations:
-- Africa, Madagascar: "Ocean Jasper", Updated October 2013
 -- Wisconsin(USA): Fluorite Thundereggs, Updated April 2012
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