Oregon thundereggs

E707559

Oregon thundereggs are distinctive, often colorful agate-filled nodules considered the state rock of Oregon and prized by collectors for their striking internal patterns.

All labels observed (1)

Label Occurrences
Oregon thundereggs canonical 1

How this entity was disambiguated

Statements (47)

Predicate Object
instanceOf geologic formation ⓘ
state rock ⓘ
thunderegg ⓘ
associatedWith Ochoco National Forest ⓘ
Priday Ranch thunderegg beds ⓘ
Richardson’s Rock Ranch ⓘ
collectingActivity rockhounding ⓘ
color blue ⓘ
brown ⓘ
gray ⓘ
purple ⓘ
red ⓘ
white ⓘ
yellow ⓘ
composedOf agate ⓘ
chalcedony ⓘ
silica ⓘ
country United States ⓘ
designatedAs official state rock of Oregon ⓘ
designationYear 1965 ⓘ
formationProcess silica-rich fluids filling gas bubbles in volcanic rocks ⓘ
foundIn Crook County, Oregon ⓘ
Deschutes County, Oregon ⓘ
linked to: Deschutes County

Jefferson County, Oregon ⓘ
Malheur County, Oregon ⓘ
Wheeler County, Oregon ⓘ
geologicEnvironment rhyolitic lava flows ⓘ
rhyolitic volcanic ash flows ⓘ
innerAppearance banded chalcedony structures ⓘ
colorful agate patterns ⓘ
geode-like cavities ⓘ
legalStatus collecting regulated on public lands ⓘ
locatedIn Oregon ⓘ
mineralClass silicate ⓘ
notableFor popularity among rock collectors ⓘ
striking internal patterns ⓘ
varied colors of agate fillings ⓘ
outerAppearance rough and nondescript rock nodule ⓘ
polishability takes a high polish ⓘ
scientificInterest examples of secondary silica deposition in volcanic terrains ⓘ
texture cryptocrystalline ⓘ
tourismRole attract rockhounds and geotourism to Oregon ⓘ
typicalShape roughly spherical nodule ⓘ
typicalSize a few centimeters to over 20 centimeters in diameter ⓘ
usedFor cabochons ⓘ
decorative display specimens ⓘ
lapidary work ⓘ

How these facts were elicited

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.