Name/Title
Petrified WoodEntry/Object ID
05.58.245Description
Assemblage Zone: sedimentary
Chemical Composition: Si O2
Crystal System: Hexagonal
Description: Family: Juglandacae
Genus:Carya
Common Name: Hickory
Age: Miocene
Location data: Washington State
Description: Thin slab with polished face. Light brown and tan outer area with black and dark brown inner area with some tan and reddish-brown areas.
Type of Fossils Present: Plants
Fracture: conchoidal
Grain Size: Fine
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: Moderate
Rock Color: Medium
Rock Origin: Post-depositional
Rock Type: Sedimentary
Specific Gravity: 2.6
Surface Process: Not apparent
Streak: white
Temperature: Low
Texture: microcrystalline
Variety: Petrified wood is hydrous microcrystalline variety of quartz that can be defined in general term of chalcedony or opalizationCollection
Petrified Wood CollectionAcquisition
Accession
05.58Source or Donor
Petrified Wood CollectionAcquisition Method
DonationOther Names and Numbers
Other Number
Other Number: 05.58.245Dimensions
Width
3 inDepth
1/4 inLength
3-1/4 inDimension Notes
Dimension taken at widest pointsLocation
Location
Container
RightDrawer
3rd ShelfShelf
LeftCabinet
Case #110Wall
West WallBuilding
Mentzer Hall - Petrified Wood RoomCategory
Permanent
