Name/Title
Petrified WoodEntry/Object ID
05.58.146Description
Assemblage Zone: tropical, subtropical
Chemical Composition: Si O2
Crystal System: Hexagonal
Description: Family: Palmae
Genus:Palmoxyon
Common Name: Palm
Age: Oligocene to Miocene
Location data: Louisiana
Description: Thin slab with polished face. Tan and beige band on outer perimeter with a dark brown band next to it fading to beige to a crystalline grey with solid grey in the center.
Type of Fossils Present: Plants
Fracture: conchoidal
Grain Size: Fine
Hardness: 7 Quartz
Lithofacies: Sedimentary
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 volcanic related mudflow. The organic material is then replaced by (SiO2) silica, 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
Temperature: Low
Texture: microcrystalline
Variety: Petrified woods ar hydrous microcrystalline varieties of quartz that can be generally termed as chalcedony .Collection
Petrified Wood CollectionAcquisition
Accession
05.58Source or Donor
Petrified Wood CollectionAcquisition Method
DonationOther Names and Numbers
Other Number
Other Number: 05.58.146Dimensions
Width
13-3/4 inDepth
1/2 inLength
16-1/2 inDimension Notes
Dimensions taken at widest pointsLocation
Location
Display Case
PW-4Room
Petrified Wood RoomBuilding
Crater Rock MuseumCategory
ExhibitMoved By
Jillian Mather KettleyDate
January 29, 2025Notes
Added current location
