ජාගුන්
| ජාගුන් | |
|---|---|
 කුඩා ජාගුන් ගලක්. | |
| 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