ජාගුන්
Appearance
ජාගුන් | |
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General | |
Category | Nesosilicates |
රසායනික සූත්රය | zirconium silicate ZrSiO4 |
Strunz classification | 09.AD.30 |
Crystal symmetry | Tetragonal ditetragonal dipyramidal H-M symbol: (4/m 2/m 2/m) Space group: I 41/amd |
Unit cell | a = 6.607(1) Å, c = 5.982(1) Å; Z=4 |
Identification | |
පාට / පැහැය | Reddish brown, yellow, green, blue, gray, colorless; in thin section, colorless to pale brown |
Crystal habit | tabular to prismatic crystals, irregular grains, massive |
Crystal system | Tetragonal |
Twinning | On {101} |
Cleavage | indistinct, on {110} and {111} |
Fracture | Conchoidal to uneven |
Tenacity | Brittle |
Mohs scale hardness | 7.5 |
Luster | Vitreous to adamantine; greasy when metamict. |
Streak | White |
Diaphaneity | Transparent to opaque |
Specific gravity | 4.6–4.7 |
Optical properties | Uniaxial (+) |
Refractive index | nω = 1.925–1.961 nε = 1.980–2.015, 1.75 when metamict |
Birefringence | δ = 0.047–0.055 |
Pleochroism | Weak |
Fusibility | Infusible |
Solubility | Insoluble |
Other characteristics | Fluorescent and radioactive, may form pleochroic halos |
References | [1][2][3][4] |
- ^ Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W. and Nichols, Monte C. (ed.). "Zircon". Handbook of Mineralogy (PDF). Vol. II (Silica, Silicates). Chantilly, VA, US: Mineralogical Society of America. ISBN 0962209716.
{{cite book}}
: CS1 maint: multiple names: editors list (link) - ^ Zircon. Mindat
- ^ Zircon. Webmineral
- ^ Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of Mineralogy, 20th ed., ISBN 0-471-80580-7