BarbarianB's Oregon Thunderegg - Oregon State Rock (LE AS)
| Trackable Options |
Found this item? Log in. |
Printable information sheet to attach to BarbarianB's Oregon Thunderegg - Oregon State Rock (LE AS)
Print Info Sheet |
|
-
Owner:
-
BarbarianB
Message this owner
-
Released:
-
Thursday, May 21, 2009
-
Origin:
-
Ohio, United States
-
Recently Spotted:
-
In the hands of the owner.
This is not collectible.
Use TB2Z5MX to reference this item.
First time logging a Trackable? Click here.
If you have found a Copy
or Proxy of this Trackable:
IT MAY BE MOVED TO
ANY GEOCACHE OR EVENT
ANYWHERE IN THE WORLD!
PLEASE KEEP IT MOVING!
The REAL Trackable will stay with it's owner to be looked at, poked, prodded, pawed, fawned over, loved, touched, felt, and taken to Events to be Discovered by other Geocachers.
The Tracking Number is the Personal and Private Property of the geocaching account owner.
It should NOT be shared publicly, especially on social media, without permission of the owner.
Unauthorized virtual discoveries will be deleted at owner discretion.
Oregon
Thunderegg
Oregon
State Rock
Finish:
Antique Silver
Limited Edition
Default Name:
Oregon Thunderegg Geocoin
Thrown by the
Mountain Gods
Thunderegg Wikipedia page
see more below ↓ ↓ ↓ ↓
Native American Legend
According to Native American legend, thundereggs were named by the Warm Springs Indians of central Oregon, who are said to have believed that these strange, agate-filled stones were eggs of thunderbirds nestled on the neighboring snow capped peaks of Mount Jefferson and Mount Hood (both stratovolcanos) in the Cascade Mountain Range. Rival, angry thunder spirits or gods who lived in the mountains hurled the thunderbird's eggs at each other in fury during thunderstorms to the accompaniment of much thunder and lightning.
About Thundereggs
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 a little more than a centimeter to over a meter 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, 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.
Thundereggs are found in flows of rhyolite lava. They form in the lava from the action of water percolating through the porous rock carrying silica in solution. The deposits lined and filled the cavity, first with a darker matrix material, then an inner core of agate or chalcedony. The various colors come from differences in the minerals found in the soil and rock that the water has moved through.
State Rock Designation
On March 30, 1965, the thunderegg was designated as the Oregon state rock by a joint resolution of the Oregon Legislative Assembly. While thundereggs can be collected all over Oregon, the largest deposits are found in Crook, Jefferson, Malheur, Wasco and Wheeler counties. The world's largest thunderegg, a 1.75 ton specimen, is housed by the Rice Northwest Museum of Rocks and Minerals in Oregon.
About the Design
Limited Edition, Antique Silver, (70) minted
Designed by burgessfour and GeocoinDesign.com, the Oregon Thunderegg geocoin was designed and crafted to show the specific geological structure within the thundereggs' formation. The Oregon Thunderegg geocoin is a hefty 2 inches wide, 1.51 inches high and 4.5mm thick. The 3D back shows a geological structure in that it is bumpy and creviced. The 2D front features 'the polished' look of having had sawed the thunderegg in half, revealing the unique pattern within, highlighted by rich translucent colors.
The interior design shows the spirited past of the Oregon Thunderegg; being hurled from one of the two feuding mountain volcanoes. The text "Thrown by the Mountain Gods" encapsulates the volcano.
Gallery Images related to BarbarianB's Oregon Thunderegg - Oregon State Rock (LE AS)
View All 3 Gallery Images
Tracking History (5.2mi) View Map