Sequoia

Object/Artifact

-

Crater Rock Museum

Name/Title

Sequoia

Entry/Object ID

78.58.319

Description

Assemblage Zone: sedimentary Chemical Composition: Si O2 Crystal System: Hexagonal Description: Family: Taxodium Genus: Sequoia Common name: Sequoia Age: Oligocene Location data: Jackson County, Oregon Roxy Ann Formation, Description: Delmar describes this piece as the polished side shows definite growth rings. Colors range from beiges, greys, oranges, red and black.Some cracks seen and some silicate filled. Piece was from a twin log. One log was rotten and this log was alive; shown from brown along one edge. Doug Foster describes this specimen as a Sequoia. Size: 13.500"x 8.250"x .675" Type of Fossils Present: Plants Grain Size: Fine Hardness: 7 Quartz 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: 1978.58.319

Dimensions

Width

8-1/4 in

Depth

11/16 in

Length

13-1/2 in

Dimension Notes

Dimensions taken at widest points

Location

Location

Container

Right

Drawer

Bottom/ Back Row

Shelf

Left

Cabinet

Case #107

Wall

North Wall

Building

Mentzer Hall- Petrified Wood Room

Category

Permanent