Name/Title
ChabaziteEntry/Object ID
2014.1.21Description
Chemical Composition: Al(OH)3
Crystal System: Hexagonal System
Description: Common Name: Chabazite
Chemistry: CaAl2Si4O12-6H2O
Group: Silicates
Location: Oregon
Description: Conglomerate matrix with a hemispherical crystalline structure. Crystals are white with pink hues.
Physical Charateristics:
•Color is clear, white, pink, yellowish, reddish and brown.
•Luster is vitreous.
•Transparency: Crystals are transparent to translucent.
•Crystal System is trigonal; bar 3 2/m
•Crystal Habits include blocky rhombohedral crystals that can look cubic (pseudocubic) because the angle between the faces is nearly 90 degrees. Aggregates form crusts and granular masses. Twinning is common with the penetration twin rotated around the c-axis.
•Cleavage is poor in three directions parallel to the faces of the rhombohedron.
•Fracture is uneven.
•Hardness is 4 - 5.
•Specific Gravity is approximately 2.0 - 2.2 (very light)
•Streak is white.
•Other Characteristics: Unlike calcite, does not react to acids.
•Associated Minerals are quartz, calcite, scolecite, apophyllite, natrolite, heulandite, stilbite and other zeolites.
•Notable Occurrences include Poona, India; Berufjord, Iceland; Columbia Co., Oregon, Passaic Co., New Jersey and in Yellowstone Park, USA; Cumberland Co., Nova Scotia; New Zealand, Rhineland, Germany and Switzerland.
•Best Field Indicators are crystal habit and symmetry, density, hardness, luster, lack of reaction to acids and associations.
Hardness: 7 Quartz
Rock Type: SedimentaryCollection
RAGM Mineral CollectionAcquisition
Accession
2014.1Source or Donor
Crater Rock Museum (unknown donors)Acquisition Method
GiftDimensions
Height
3-1/2 inWidth
1-1/4 inLength
2 inLocation
Location
Display Case
FS-11Room
Frieda Smith HallBuilding
Crater Rock MuseumCategory
PermanentMoved By
Curtis GardnerDate
December 27, 2023Location
Shelf
4th shelfCabinet
Case# 20Wall
WestBuilding
Freida Smith HallCategory
Permanent
