Willow

Object/Artifact

-

Crater Rock Museum

Name/Title

Willow

Entry/Object ID

78.58.40

Description

Chemical Composition: Si O2 Crystal System: Hexagonal Description: Family: Salicacea Genus: Salix Common name: Willow Age: unknown Location data: Fernley, Nevada USA Description: (1 of 5 limbs) Opalized through center with some evidents of growth rings and knot to the center, brown, tan, white. Outer is bleached white and tan. Size: Diameter 1 3/4" Lenght: 4" 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 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: microcrtystalline Variety: Petrified woods ar hydrous microcrystalline varieties of quartz that can be generally termed as chalcedony .

Collection

Petrified Wood Collection

Acquisition

Accession

78.58

Source or Donor

Delmar Smith Petrified Wood Collection

Acquisition Method

Donation

Other Names and Numbers

Other Number

Other Number: 1978.58.40

Dimensions

Width

2 in

Depth

4 in

Length

1-3/4 in

Dimension Notes

Dimensions taken at widest points

Location

Location

Container

Right

Drawer

Top Shelf

Shelf

Right

Cabinet

Case #101

Wall

South wall

Building

Mentzer Hall - Petrified Wood Room

Category

Permanent