Sequoia

Object/Artifact

-

Crater Rock Museum

Name/Title

Sequoia

Entry/Object ID

78.58.79

Description

Assemblage Zone: sedimentary Chemical Composition: Si O2 Crystal System: Hexagonal Description: Family: Taxodiaceae Genus: Sequoiadendron Common name: Sequoia Age: Oligocene in Tertiary Location data: Scio, Oregon. Mehama fm. Description: This is a thick specimen with a triangular shape with a beveled polished face. Colors are grey, cream, gold, and browns. There is a couple of thick bands surrounding a beige streaked center. Size: 7.00"x 5.00"x 1.250" Type of Fossils Present: Plants Grain Size: Fine Hardness: 7 Quartz Lithofacies: flood basalts Luster: Glassy Occurrence: Silicified wood, which is the fossilization and opalization of organic woody matter by the deposation of SiO2 in a anaerobic environment to prevent decay. This means that the wood must somehow be buried in an oxygen free enviroment, possibly in the silt-laden river or the bottom of a lake or buried by volcanic ash. Pressure: Low-Moderate Rock Color: Medium Rock Origin: Terrestrial Rock Type: Sedimentary Specific Gravity: 2.6 Surface Process: Not apparent Temperature: Low Texture: microcrystalline Variety: Petrified woods here are hydrous microcrystalline variety of quartz that can be generally termed as chalcedony or opal.

Collection

Petrified Wood Collection

Acquisition

Accession

78.58

Source or Donor

Delmar Smith Petrified Wood Collection

Acquisition Method

Donation

Other Names and Numbers

Other Number

Other Number: 78.58.79

Dimensions

Width

5 in

Depth

1-1/4 in

Length

7 in

Dimension Notes

Dimensions taken at widest points

Location

Location

Container

Center

Drawer

3rd Shelf

Shelf

Right

Cabinet

Case #108

Wall

North Wall

Building

Mentzer Hall - Petrified Wood Room

Category

Permanent