Name/Title
HickoryEntry/Object ID
07.58.98Description
Chemical Composition: Si O2
Crystal System: Hexagonal
Description: Family: Juglandaceae
Genus: Carya
Common name: Hickory
Age: Pliocene
Location data: Deschutes Canyon, Oregon
Description: Thin slice with polished face. Dark grey outer edge with some lighter greys and a light brown, grey and white inner area with distinct growth rings visible and some dark spots also in the inner area.
Size: 10.500"x 10.500"x .500"
Type of Fossils Present: Plants
Fracture: conchoidal
Grain Size: Fine
Hardness: 7 Quartz
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
Streak: white
Temperature: Low
Texture: Mircrocrystalline
Variety: Petrified woods here are hydrous microcrystalline variety of quartz that can be generally termed as chalcedony.Collection
Petrified Wood CollectionAcquisition
Accession
07.58Source or Donor
Petrified Wood CollectionAcquisition Method
DonationOther Names and Numbers
Other Number
Other Number: 07.58.98Dimensions
Width
10-1/2 inDepth
1/2 inLength
10-1/2 inDimension Notes
Dimension taken at widest pointsLocation
Location
Display Case
PW-2Room
Petrified Wood RoomBuilding
Crater Rock MuseumCategory
ExhibitMoved By
Jillian Mather KettleyDate
January 29, 2025Notes
Added current location
