Pepper Tree

Object/Artifact

-

Crater Rock Museum

Name/Title

Pepper Tree

Entry/Object ID

07.58.106

Description

Assemblage Zone: Lake sediments Chemical Composition: Si O2 Crystal System: Hexagonal Description: Genus: Schinoxylon Common name: Pepper Tree Age: Eocene Location data: Eden Valley, Wyoming, USA Description: The limb shows the formation of calcareous rock attached to the outerside with grey botrytoidal and yellowish crystal along with a bark appearance in tan. The inner limb is in brown shades with growth ring and rays. Size: 2.250"x 2.250"x 4.750" Type of Fossils Present: Plants Fracture: conchoidal Grain Size: Fine Hardness: 7 Quartz Lithofacies: Volcanic ash Luster: Glassy Occurrence: Silicified wood, which is the fossilization and opalization of organic woody matter by the deposition 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 or volcanic related mudflow. The organic material is then replaced by (SiO2) silica, other minerals determined its colors. Pressure: Low-Moderate Rock Color: Medium Rock Origin: Post-depositional Rock Type: Sedimentary Specific Gravity: 2.6 Surface Process: Not apparent Temperature: Low Texture: microcrystalline Variety: Petrified woods ar hydrous microcrystalline varieties of quartz that can be generally termed as chalcedony .

Collection

Petrified Wood Collection

Acquisition

Accession

07.58

Source or Donor

Petrified Wood Collection

Acquisition Method

Donation

Other Names and Numbers

Other Number

Other Number: 2007.58.106

Dimensions

Width

2-1/4 in

Depth

4-3/4 in

Length

2-1/4 in

Dimension Notes

Dimension taken at widest points

Location

Location

Container

Right

Drawer

3rd Shelf

Shelf

Left

Cabinet

Case #101

Wall

South wall

Building

Mentzer Hall - Petrified Wood Room

Category

Permanent