Name/Title
Petrified Wood Knapped Into a ToolEntry/Object ID
06.58.23Description
Assemblage Zone: river sediments
Chemical Composition: Si O2
Crystal System: Hexagonal
Description: Family: Not Identified
Age: Unknown
Location data: Sams Valley, Jackson County, Oregon, USA
Payne Cliffs Fm.
Description: This specimen is a rusty-brownish, tan chunk of petrified wood which is believe to have been chipped by Native Americans in the making of some type of tool or arrow head.
Type of Fossils Present: Plants
Fracture: conchoidal
Grain Size: Fine
Hardness: 7 Quartz
Lithofacies: sandstone
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 environment, 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: 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
06.58Source or Donor
Petrified Wood CollectionAcquisition Method
DonationOther Names and Numbers
Other Number
Other Number: 2006.58.23Dimensions
Width
5 inDepth
1 inLength
6-1/2 inDimension Notes
Dimension taken at widest pointsLocation
Location
Display Case
PW-12Room
Petrified Wood RoomBuilding
Crater Rock MuseumCategory
ExhibitMoved By
Jillian Mather KettleyDate
September 19, 2025Notes
Location added when performing inventory
