Hermanophyton (Seed Fern Like)

Object/Artifact

-

Crater Rock Museum

Name/Title

Hermanophyton (Seed Fern Like)

Entry/Object ID

78.58.284(a)(b)

Description

2 pieces Chemical Composition: Si O2 Crystal System: Hexagonal Description: Family: Hermanophyton Genus: Glyssmani Common name: Age: Jurassic Location data: Morrison Formation, East McElmo Creek, Colorado USA Description: A 1/2" thick slice of petrified wood. Variety Rexoxalox, from Utah (Doug changed it to Hermanophyton from Colorado, Polished sides shows flower shaped wood design with petals in grey and brown agate in a pale pink beige rock. , outerside is in cream and brown. Probably from the Jurassic period (mesozoic era) . Only five pieces found in the world. Size:4.00"x 5.00"x .500" 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

Other Names and Numbers

Other Number

Other Number: 1978.58.284

Dimensions

Width

5 in

Depth

1/2 in

Length

4 in

Dimension Notes

Dimensions taken at widest points

Location

Location

Container

Left

Drawer

Bottom

Shelf

Left

Cabinet

Case #104

Wall

East Wall

Building

Mentzer Hall - Petrified Wood Room

Category

Permanent