Name/Title
JuniperEntry/Object ID
05.58.37Description
Assemblage Zone: volcanic sediments
Chemical Composition: Si O2
Crystal System: Hexagonal
Description: Family: Cupressaceae
Genus: Juniperus
Common Name: Juniper
Age: Early Oligocene
Location data: Eagle Point , Jackson County, Oregon USA
Roxy Ann Formation,
Description: Polished face show a complete round with colors in brown and tan the outer side shows bark in a rusty tan, growth ring are clearly seen.
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: Light
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
05.58Source or Donor
Petrified Wood CollectionAcquisition Method
DonationOther Names and Numbers
Other Number
Other Number: 2005.58.37Dimensions
Width
3-7/8 inDepth
1/2 inLength
2-3/8 inDimension Notes
Dimension taken at widest pointsLocation
Location
Display Case
PW-7Room
Petrified Wood RoomBuilding
Crater Rock MuseumCategory
ExhibitMoved By
Jillian Mather KettleyDate
January 22, 2025Notes
Location/inventory
