Name/Title
Brecciated Petrified WoodEntry/Object ID
07.58.26Description
Chemical Composition: Si O2
Crystal System: Hexagonal
Description: Age: Oligocene
Location data: Roxy Ann Formation, Knutson Creek, Jackson County, Oregon, USA
Description: Polished slab, multi-colored yellow, orange, red with bands of clear agate
Size: face 5." x 3.75" x 1.750"
Type of Fossils Present: Plants
Fracture: conchoidal
Grain Size: Course
Hardness: 7 Quartz
Luster: Glassy
Occurrence: Silicified wood, which is the fossilization and/or 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 in the wood is then replaced by silica, other minerals determined the colors of the petrified wood.
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: Brecciated matrix of preserved the original wood texture
Variety: Brecciated petrified wood is hydrous microcrystalline variety of quartz that can be defined in general term of chalcedonyCollection
Petrified Wood CollectionAcquisition
Accession
07.58Source or Donor
Petrified Wood CollectionAcquisition Method
DonationOther Names and Numbers
Other Number
Other Number: 2007.58.26Dimensions
Width
3-3/4 inDepth
1-3/4 inLength
5 inDimension Notes
Dimension taken at widest pointsLocation
Location
Shelf
Middle Top shelf ri, Middle Top shelf riWall
right - southRoom
Wood roomBuilding
Mentzer Hall - Petrified Wood RoomCategory
PermanentMoved By
Catherine BoydDate
March 6, 2008Location
Container
LeftDrawer
Top ShelfShelf
RightCabinet
Case #100Wall
South wallBuilding
Mentzer Hall - Petrified Wood RoomCategory
Permanent
