Name/Title
Petrified WoodEntry/Object ID
05.58.27Description
Chemical Composition: Si O2
Crystal System: Hexagonal
Description: Family: Protopinaceae
Genus: Woodworthia
Common name: Woodworthia
Age: Late Triassic to Early Jurassic
Location data: Zambezi Valley, Zimbabwe, Africa
Description: Polished cut slab with colors white and green (green color from chromium)
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
05.58Source or Donor
Petrified Wood CollectionAcquisition Method
DonationOther Names and Numbers
Other Number
Other Number: 2005.58.27Dimensions
Width
7-3/4 inDepth
1/2 inLength
9-3/4 inDimension Notes
Dimension taken at widest pointsLocation
Location
Container
CenterDrawer
Top ShelfShelf
RightCabinet
Case#104Wall
East WallBuilding
Mentzer Hall - Petrified Wood RoomCategory
PermanentLocation
Shelf
Top Left on left sid, Top Left on left sidWall
EasternRoom
Petrified WoodBuilding
Mentzer Hall - Petrified Wood RoomCategory
Permanent