Name/Title
Kyanite / StauroliteEntry/Object ID
2009.62.212Description
Description: Chemistry: Al2 SiO5, Aluminum Silicate
Class: Silicates
Subclass: Nesosilicates
PHYSICAL CHARACTERISTICS:
Color is blue usually but also can be white, gray or green. Color is often not consistent throughout the crystal and can be blotchy or in streaks.
Luster is vitreous to almost pearly.
Transparency crystals are transparent to translucent.
Crystal System is Triclinic; bar 1
Crystal Habits include flat, pinacoid dominated, prismatic crystals often embedded in metamorphic rocks and quartz veins.
Cleavage is good in one direction parallel to the flat pinacoid face.
Fracture is splintery.
Hardness is approximately 4.5 when scratched parallel to the long axis of the crystal and approximately 6.5 when scratched perpendicular to or across the long axis.
Specific Gravity is approximately 3.58+ (above average)
Streak is white.
Best Field Indicators are crystal habit, color, luster and unusual hardness.
Occurrence: Notable Occurrences include Brazil; North Carolina and Georgia, USA; Switzerland; Russia; Serbia; India and Kenya.
Variety: Kyanite is a polymorph with two other minerals: andalusite and sillimanite. A polymorph is a mineral that shares the same chemistry but a different crystal structure with another, or other, minerals.Collection
RAGM Mineral CollectionAcquisition
Accession
2009.62Source or Donor
Museum Collection of MineralsAcquisition Method
DonationLocation
Category
PermanentMoved By
Curtis GardnerDate
May 24, 2023Notes
Added current locationLocation
Drawer
Top tierWall
West wallRoom
Delmar Smith HallBuilding
Crater Rock MuseumCategory
PermanentMoved By
Wendy MondryDate
January 20, 2010
