Thundereggs

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THUNDEREGG : OREGON'S STATE ROCK

bulletWhat is a Thunderegg ?   Thundereggs are spherical masses of rock that range in size from less than an inch to four feet in diameter . Most are about the size of a baseball . They have a knobby rind of drab , siliceous rock and a cavity filled with agate . From the out side they appear nondescript , but when sawed open and polished they may reveal the most exquisite and colorful designs ranging from five-pointed stars to miniature gardens .
bulletHistory of The Name :   The Warm Springs Indians have been given credit for "long ago" originating the name . As the legend goes, ". . . the two adjacent snow capped peaks - - Mt. Hood and Mt. Jefferson - - would at times become angry with one another . During these disputes, accompanied with thunder, Mt. hood and Mt. Jefferson would hurl these spherical masses of rock at each other . Stray shots would land over in the Indian reservation, hence the Indian name of ' thunder eggs '."
bulletOrigin of Thundereggs :   Thundereggs are only found in areas of previous volcanic activity . As silicic lavas poured out on the ground, the gasses made it frothy and bubbly . The lava cooled and over a period of millions of years, became buried . Water, which contains many minerals including silica, penetrated the gas pockets through a crack in the nodule. As water slowly dissipated, the solution deposited agate ( chalcedong SiO2 ) .
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Thundereggs - Yahoo!Welcome to the Thunderegg  section of our store. Here you will find many different types of Thundereggs that we have dug from several locations.

bulletAll of our products are unique collectables and will be sold on a first come first serve basis, and will be removed from inventory.
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Please refer to each item for individual descriptions and dimensions. 

Please click on Thunderegg Photographs to enlarge.

Geode TE - 288 Price: $40.00

Dugway Geode. This polished half has picturesque blue agate center. The dugway's are found near the Dugway Proving Grounds in Utah. Hard to dig and not close to any main roads. The centers of the dugways are blue to white various interesting shapes. More photos follow. Size: 3 3/4"h x 3"w x 1 3/8"thick. Weight: 12 ozs. Note! Measuirements are from the highest, widest, & thickest parts.

Geode TE - 288

A close up.

Geode TE - 288

A close up of bottom part of cavity.

Geode TE - 288

Close up.

Geode TE - 288

Close-up.

Geode TE - 288

Geode TE - 288

Back of Dugway.

Thunderegg TE - 287 Price: $55.00

Super Buchanan thunderegg half from Buchanan, Oregon. This polished half is a great characteristic of this variety of eggs. The colors and swirls make a fine agate picture. More photos follow. Size: 5"h x 5 3/4"w x 2 "thick. Weight: 2 lbs. 10 ozs. Note! Measuirements are from the highest, widest, & thickest parts.

Thunderegg TE - 287

Close up!

Thunderegg TE - 287

Another view.

Thunderegg TE - 287

Closeup!

Thunderegg TE - 287

Thunderegg TE - 287

Another view.

Thunderegg TE - 287

Closeup.

Thunderegg TE - 287

Closeup!

Thunderegg TE - 287

The outside back.

Thunderegg TE - 274 Price: $50.00

Polished Lucky Strike Thunderegg from the Ochoco Mountains in Oregon. This specimen displays a cloudy horison over water. There is yellow ocher colored moss around the agate center. More photos follow. Size: 8 1/4"h x 7 1/2"w x 2 1/2"deep. Weight: 8lbs. 2ozs. Measurements are from the tallest, widest, & thickest parts.

Thunderegg TE - 274 #2

Thunderegg TE - 274 #3

Thunderegg TE - 274 #4

Thunderegg TE - 274 #5

Thunderegg TE - 274 #6

Thunderegg TE - 274 #7

Thunderegg TE - 278 Price: $75.00

Large polished Succor Creek thunderegg half from Succor Creek Canyon in Oregon. This specimen displays a very fine pattern of fortification agate with poka doted denderites. Makes an excellent display. Best with a good light high lighting it. More photos follow. Size: 4 3/4"h x 8"w x 2 1/4"deep. Weight: 3 lbs. 12 oz. Note! Measuirements are from the highest, widest, & thickest parts.

Thunderegg TE - 278

Close-up.

Thunderegg TE - 278

Left side.

Thunderegg TE - 278

Richt side.

Thunderegg TE - 278

Center bottom.

Thunderegg TE - 278

Turned upside down.

Thunderegg TE - 278

Outside back.

Thunderegg TE - 280 Price: $20.00

Skull Springs thunderegg half from near Harper, Oregon. This polished egg half has a unique picture in agate. The eggs from this location have wavy curly patterns in the agate. Easy to identify. More photos follow. Size: 5 1/4"h x 4 1/2"w x 2"deep. Weight: 2 lbs.even. Note! Measuirements are from the highest, widest, & thickest parts.

Thunderegg TE - 280

Close-up.

Thunderegg TE - 280

Turned upside down or is it right side up?

Thunderegg TE - 280

Closeup.

Thunderegg TE - 280

The back.

Thunderegg TE - 281 Price: $35.00

A nice triple Succor Creek thunderegg half from Succor Creek Canyon in Oregon. This polished half has a different pattern in each egg. Thats the excitement of cutting open each egg. No telling what will be inside. This was a good one. More photos follow. Size: 4 "h x 7 1/4"w x 1 1/4"thick. Weight: 1 lb. 8 ozs. Note! Measuirements are from the highest, widest, & thickest parts.

Thunderegg TE - 281

Thunderegg TE - 281

Thunderegg TE - 281

Thunderegg TE - 281

Thunderegg TE - 281

Thunderegg TE - 281

Thunderegg TE - 281

Thunderegg TE - 281

The back.

Thunderegg TE - 284 Price: $20.00

Skull Springs thunderegg half from Eastern Oregon near town of Harper. This polished half has an interesting agate center with blue and brown pattern. Agate pattern is characteristic of Skull Springs eggs. More photos follow. Size: 5"h x 4 1/4"w x 1 1/4"thick. Weight: 1 lb. 12 ozs. Note! Measuirements are from the highest, widest, & thickest parts.

Thunderegg TE - 284

Close-up of agate center.

Thunderegg TE - 284

Turned another direction.

Thunderegg TE - 284

Thunderegg TE - 284

The back.

Thunderegg TE - 285 Price: $35.00

Succor Creek triple thunderegg half from Eastern Oregon near Idaho border in Nyssa & Jorden Valley. This polished half has interesting & diffrerent agate centers. Nice contrast of blue & black. More photos follow. Size: 4 1/4"h x 7 1/2"w x 2 1/8"thick. Weight: 2 lbs. 12 ozs. Note! Measuirements are from the highest, widest, & thickest parts.

Thunderegg TE - 285

Do you see the dog's head, with long floppy ears & large nose?

Thunderegg TE - 285

Thunderegg TE - 285

Blue, white, & black agate in the tiny egg.

Thunderegg TE - 285

Turned the other way.

Thunderegg TE - 285

Thunderegg TE - 285

Thunderegg TE - 285

Thunderegg TE - 285

Thunderegg TE - 289 Price: $35.

From the Friend Ranch in Eastern Oregon. This polished half has an interesting red & black design against the blue background. The owner has passed away & is now closed to digging. More photos follow. Size: 3"h x 2 5/8"w x 1"thick. Weight: 2.3 ozs. Note! Measuirements are from the highest, widest, & thickest parts. 72811

Thunderegg TE - 289

Thunderegg TE - 289

Thunderegg TE - 289

Thunderegg TE - 289

Thunderegg TE - 289

Thunderegg TE - 292 Price: $40.00

A cluster of four Buchanan thundereggs from near the town of Buchanan, Oregon. The two polished agate centers that show are like star designs. Pleasing colors of deep red, white, and gray fill the wavey patterns and quartz pockets in the center. More photos follow: Size: 5 3/4"h x 5"w x 2 "thick. Weight: 2 lbs.1.7 ozs. Note! Measuirements are from the highest, widest, & thickest parts. 72911

Thunderegg TE - 292

Thunderegg TE - 292

Thunderegg TE - 292

Thunderegg TE - 292

Thunderegg TE - 292

Thunderegg TE - 292

Thunderegg TE - 293 Price: $30.00

A RARE polished Frieda thunderegg from Central Oregon. The agate center is bordered with gray-green moving into white agate around the quartz crystal cavity. More photos follow: Size: 2 1/2"h x 2 1/2"w x 1 "thick. Weight: 5.6 ozs. Note! Measuirements are from the highest, widest, & thickest parts. 73011

Thunderegg TE - 293

Thunderegg TE - 293

Thunderegg TE - 293

Thunderegg TE - 294 Price: $30.00

A RARE polished half of a Frieda thunderegg from Central Oregon. The agate center is bordered with gray-green moving into white agate around the quartz crystal cavity. More photos follow: Size: 2 1/2"h x 2 1/2"w x 1 "thick. Weight: 4.2 ozs. Note! Measuirements are from the highest, widest, & thickest parts. 73111

Thunderegg TE - 294

Thunderegg TE - 294

Thunderegg TE - 294

Thunderegg TE - 294

Please click on Thunderegg Photographs to enlarge.

 

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This site was last updated 09/14/14

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Revised: 09/14/14