Name/Title
Petrified WoodEntry/Object ID
07.58.78Description
Assemblage Zone: subtropical
Chemical Composition: Si O2
Crystal System: Hexagonal
Description: Common Name: Opalized limb cast
Age: Eocene
Location data: Hampton Butte, Oregon USA
Description: Polished slab, beautiful blues, bluish-green, tan, brown and white, but the wood itself is not identifiable.
Size: 22.750"x 11.00"x .875"
Type of Fossils Present: Plants
Fracture: conchoidal
Grain Size: Fine
Hardness: 7 Quartz
Lithofacies: volcaniclastic
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
Temperature: Low
Texture: Microcrystalline
Variety: Petrified woods ar hydrous microcrystalline varieties of quartz that can be generally termed as chalcedony or opalized .Collection
Petrified Wood CollectionAcquisition
Accession
07.58Source or Donor
Petrified Wood CollectionAcquisition Method
DonationOther Names and Numbers
Other Number
Other Number: 2007.58.78Dimensions
Width
11 inDepth
7/8 inLength
22-3/4 inDimension Notes
Dimension taken at widest pointsLocation
Location
Shelf
bottom right, bottom rightWall
right - southRoom
Wood roomBuilding
Mentzer Hall - Petrified Wood RoomCategory
PermanentMoved By
Catherine BoydDate
March 6, 2008Location
Shelf
BottomCabinet
Case #100(b)Wall
SouthBuilding
Mentzer Hall - Petrified Wood RoomCategory
Permanent
