Name/Title
Laguna AgateEntry/Object ID
1986.62.22Description
Chemical Composition: SiO2
Crystal System: Orthorhombic System
Description: Common Name: Quartz var. agate
Chemistry: SiO2
Group: Silicates
Location: New Mexico
Description: Thick slab with polished face. Outer band is dark gray to black, mostly transparent with a light brown band surrounding a translucent blue-gray and creamy white, with a crystalline structure in a hollow cavity.
PHYSICAL CHARACTERISTICS:
Agate ( /'æg?t/) is a microcrystalline variety of 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 and can be common in certain metamorphic rocks.
Fracture: conchoidal
Hardness: 7 Quartz
Luster: Waxy
Rock Type: Sedimentary
Specific Gravity: 2.58-2.64
Streak: white
Texture: MircocrystallineCollection
Mexican Agate CollectionAcquisition
Accession
78.59Source or Donor
Delmar Smith Agate CollectionAcquisition Method
GiftDimensions
Width
4-1/4 inDepth
1-1/4 inLength
6-11/16 inDimension Notes
Dimension taken at widest pointsLocation
Location
Display Case
FS-15Room
Frieda Smith HallBuilding
Crater Rock MuseumCategory
PermanentDate
September 5, 2023