Name/Title
LaurelEntry/Object ID
07.58.93Description
CRM/SOU EP1-178
Assemblage Zone: sedimentary
Chemical Composition: Si O2
Crystal System: Hexagonal
Description: Family: Lauraceae-like
Common name: Laurel-like with growth rings
Age: Oligocene
Location data: Roxy Formation, Eagle Point, Jackson Co., Oregon, USA
Description: Exceptionally well perserved log, exterior shows 3 knots and extensive pitting of "leaf shoot scars" and is colored pinkish-tan with green overtones. The cut face shows diagonistic woodworthia (??) traces and is colored brown and white.
Size: 7.500"x 6.00"x 6.750"
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: 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: 2007.58.93Dimensions
Width
6 inDepth
6-3/4 inLength
7-1/2 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
Inventory/locating