ජාගුන්

විකිපීඩියා, නිදහස් විශ්වකෝෂය වෙතින්
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ජාගුන්
කුඩා ජාගුන් ගලක්.
General
CategoryNesosilicates
රසායනික සූත්‍රයzirconium silicate ZrSiO4
Strunz classification09.AD.30
Crystal symmetryTetragonal ditetragonal dipyramidal
H-M symbol: (4/m 2/m 2/m)
Space group: I 41/amd
Unit cella = 6.607(1) Å, c = 5.982(1) Å; Z=4
Identification
පාට / පැහැයReddish brown, yellow, green, blue, gray, colorless; in thin section, colorless to pale brown
Crystal habittabular to prismatic crystals, irregular grains, massive
Crystal systemTetragonal
TwinningOn {101}
Cleavageindistinct, on {110} and {111}
FractureConchoidal to uneven
TenacityBrittle
Mohs scale hardness7.5
LusterVitreous to adamantine; greasy when metamict.
StreakWhite
DiaphaneityTransparent to opaque
Specific gravity4.6–4.7
Optical propertiesUniaxial (+)
Refractive indexnω = 1.925–1.961
nε = 1.980–2.015, 1.75 when metamict
Birefringenceδ = 0.047–0.055
PleochroismWeak
FusibilityInfusible
SolubilityInsoluble
Other characteristicsFluorescent and radioactive, may form pleochroic halos
References[1][2][3][4]
  1. Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W. and Nichols, Monte C., ed. "Zircon" (PDF). Handbook of Mineralogy. II (Silica, Silicates). Chantilly, VA, US: Mineralogical Society of America. ISBN 0962209716. http://rruff.geo.arizona.edu/doclib/hom/zircon.pdf. 
  2. Zircon. Mindat
  3. Zircon. Webmineral
  4. Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of Mineralogy, 20th ed., ISBN 0-471-80580-7
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