Name/Title
Petrified WoodEntry/Object ID
07.58.63Description
Assemblage Zone: sandstone, mudstone
Chemical Composition: Si O2
Crystal System: Hexagonal
Description: Family: Anacardiaceae
Genus Schinoxylon
Common name: Pepper wood
Age: Early Eocene
Location data: Green River Formation, Big Sandy Reservoir near Eden Valley, Wyoming
Description: Petrified wood is encased in petrified algae colored beige, the polished face is grayish-tan and brown.
Size: 8.00"x 7.250"x 5.250"
Type of Fossils Present: Plants
Fracture: conchoidal
Grain Size: Fine
Hardness: 7 Quartz
Lithofacies: Lake sediments
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: microcrystaline
Variety: Petrified wood is hydrous microcrystalline variety of quartz that can be defined in general term of chalcedony or opalizedCollection
Petrified Wood CollectionAcquisition
Accession
07.58Source or Donor
Petrified Wood CollectionAcquisition Method
DonationOther Names and Numbers
Other Number
Other Number: 2007.58.63Dimensions
Width
7-1/4 inDepth
5-1/4 inLength
8 inDimension Notes
Dimension taken at widest pointsLocation
Location
Shelf
cubby, cubbyWall
NorthRoom
Wood roomBuilding
Mentzer Hall - Petrified Wood RoomCategory
PermanentMoved By
Catherine BoydDate
November 6, 2008Location
Shelf
BottomCabinet
Case #105B(b)Wall
NorthBuilding
Mentzer Hall - Petrified Wood RoomCategory
Permanent
