Thunderegg

Object/Artifact

-

Crater Rock Museum

Name/Title

Thunderegg

Entry/Object ID

2010.1.44

Description

Chemical Composition: SiO2 Crystal System: Hexagonal System Description: Common Name: Agate Chemistry: SiO2, Silicon Dioxide Class: Silicates Location: Bully Cr., Ontario, Oregon Description: Large, rounded back with polished face. Light and dark reddish-brown with white cracking on outer regions. Inner area is a conglomerate of banded black, blue-grays, white, browns, and an area of grainy tans and whites.

Collection

RAGM Mineral Collection

Acquisition

Accession

2009.62

Source or Donor

Museum Collection of Minerals

Acquisition Method

Donation

Dimensions

Width

8-3/4 in

Depth

4 in

Length

11 in

Location

Location

Shelf

FS-15-A

Room

Frieda Smith Hall

Building

Crater Rock Museum

Category

Exhibit

Moved By

Jillian Mather Kettley

Date

June 17, 2025

Notes

location added while cleaning