Name/Title
Sequoia RootEntry/Object ID
78.58.240Description
Assemblage Zone: sedimentary
Chemical Composition: Si O2
Crystal System: Hexagonal
Description: Family: Cupressaceae
Genus:Sequoia
Common Name: Sequoia Root
Age: Miocene
Location data: Sunnyside, Washington
Description: Short limb with a cut and polished face. Mostly brown with some tan towards the center. Some growth rings visible. Outer wood is opalized.
Size: 2.125"x 2.125"x 3.00"
Type of Fossils Present: Plants
Fracture: conchoidal
Grain Size: Fine
Hardness: 7 Quartz
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 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 in the wood is then replaced by silica, other minerals determined the colors of the petrified wood.
Pressure: 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
78.58Source or Donor
Delmar Smith Petrified Wood CollectionAcquisition Method
DonationOther Names and Numbers
Other Number
Other Number: 78.58.240Dimensions
Width
2-1/8 inDepth
3 inLength
2-1/8 inDimension Notes
Dimension taken at widest pointsLocation
Location
Container
LeftDrawer
Bottom / Front RowShelf
RightCabinet
Case #110Wall
West WallBuilding
Mentzer Hall - Petrified Wood RoomCategory
Permanent
