Pine

Object/Artifact

-

Crater Rock Museum

Name/Title

Pine

Entry/Object ID

05.58.234

Description

Chemical Composition: Si O2 Crystal System: Hexagonal Description: Family: Pinaceae Genus: Pinus Common name: White pine Age: Eocene Location data: Roxy Ann District, Jackson County, OR. Roxy fm. Description: Thick slab with polished face. Mostly black on face with some areas of brown. Some growth rings are visible. Type of Fossils Present: Plants Fracture: conchoidal Grain Size: Fine Hardness: 7 Quartz 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 related volcanic mudflow. The organic material in the wood is then replaced by silica (SiO2), 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 Streak: white Temperature: Low Texture: Mircrocrystalline Variety: Petrified woods here are hydrous microcrystalline variety of quartz that can be generally termed as chalcedony.

Collection

Petrified Wood Collection

Other Names and Numbers

Other Number

Other Number: 05.58.234

Dimensions

Width

6-3/4 in

Depth

2 in

Length

6 in

Dimension Notes

Dimension taken at widest points

Location

Location

Container

Left

Drawer

Bottom / Back Row

Shelf

Right

Cabinet

Case#107

Wall

North Wall

Building

Mentzer Hall - Petrified Wood Room

Category

Permanent