Name/Title
Laguna AgateEntry/Object ID
1986.62.24Description
Chemical Composition: SiO2
Crystal System: Orthorhombic System
Description: Common Name: Quartz var. agate
Chemistry: SiO2
Group: Silicates
Location: Unknown
Description: Rough, rounded back with polished convex face. Multiple orbicular structures and slight banding on inner area. Colors are dark purple to lavender to blue-gray with a creamy white to gray center spot.
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
2-7/8 inDepth
1-3/4 inLength
3-3/8 inDimension Notes
Dimension taken at widest pointsLocation
Location
Display Case
FS-15Room
Frieda Smith HallBuilding
Crater Rock MuseumCategory
PermanentDate
September 5, 2023