Agate

Object/Artifact

-

Crater Rock Museum

Name/Title

Agate

Entry/Object ID

2008.1.16

Description

Chemical Composition: Si O2 Crystal System: Hexagonal Description: Large slice of Plume Agate Common Name: Plume agate Age: Location data: Graveyard Point, Oregon-Idaho Border USA Description: Large polished slice, colors range from tan, beige, white to clear with some brown and pink run through it Size: 16" X 17.25" width 1/3" Type of Fossils Present: None Grain Size: Fine Hardness: 7 Quartz Luster: Glassy Occurrence: These agates initially had formations on their outside layer that formed prior to the deposition of chalcedony bands. They are filament growths of mineral inclusions that resemble ferns or feathers. Pressure: Moderate Rock Color: Medium Rock Origin: Terrestrial Rock Type: Sedimentary Specific Gravity: 2.6 Surface Process: Not apparent Temperature: Moderate Texture: microcrystaline Variety: Agate is a microcrystalline variety of quartz (silica), chiefly chalcedony, characterised by its fineness of grain and brightness of color. Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks but can be common in certain metamorphic rocks

Collection

Oren Kellenbeck Collection

Acquisition

Accession

2008.1

Source or Donor

Oren Kellenbeck Collection

Acquisition Method

Gift

Other Names and Numbers

Other Number

Other Number: 2008.1.16

Dimensions

Dimension Notes

Dimension taken at widest points

Location

Location

Drawer

Top shelf

Shelf

Right side, Right side

Wall

Northeast wall

Room

Main Room, Mentzer Hall

Building

Crater Rock Museum

Category

Permanent

Moved By

Wendy Mondry

Date

February 11, 2010

Location

Cabinet

Tote

Building

Storage (old gift shop upstairs)

Category

Permanent