The Cave Thunderegg

Object/Artifact

-

Crater Rock Museum

Name/Title

"The Cave" Thunderegg

Entry/Object ID

2015.1.23

Description

Chemical Composition: SiO2 Crystal System: Triclinic System Description: Common Name: Thunderegg Chemistry: SiO2 , Silicon dioxide Class: Class: Silicates Location: Madras. Oregon Description: A matrix of brown to greenish grey agate surrounds fortified agate in clear and dark grey. Bedding lines are seen in about half the agate center. There are also four small, agate lined openings. Some reddish brown to tan moss is seen along the perimeters. Rock is reddish brown.

Collection

Delmar Smith Mineral Collection

Acquisition

Accession

2015.1

Dimensions

Width

6-1/2 in

Depth

2-3/4 in

Length

8-1/2 in

Dimension Notes

Dimension taken at widest points

Location

Location

Shelf

CS-J-3

Room

Curation Storage

Building

Crater Rock Museum

Category

Storage

Moved By

Jillian Mather Kettley

Date

July 2, 2025

Notes

Location update

Location

* Untyped Location

DS-11

Room

Delmar Smith Hall

Building

Crater Rock Museum

Category

Permanent

Moved By

Curator

Date

April 28, 2023

Notes

Added current location while cleaning shelf