Zircon
Appearance
Zircon | |
---|---|
General | |
Category | Nesosilicates |
Formula (repeatin unit) | zirconium silicate (ZrSiO4) |
Strunz clessification | 09.AD.30 |
Creestal seestem | Tetragonal |
Space group | Tetragonal ditetragonal dipyramidal H-M seembol: (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 | |
Colour | Reddish broun, yellae, green, blae, gray, colourless; in thin section, colourless tae fauch broun |
Creestal habit | tabular tae prismatic crystals, irregular grains, massive |
Twinnin | On {101} |
Cleavage | indistinct, on {110} an {111} |
Fractur | Conchoidal tae uneven |
Tenacity | Brickle |
Mohs scale haurdness | 7.5 |
Skinkle | Vitreous tae adamantine; glittie whan metamict. |
Streak | White |
Diaphaneity | Skyre tae opaque |
Speceefic 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 | Waik |
Fusibility | close tae 2,550 °C depend on Hf,Th,U,H,etc... concentrations. |
Solubility | Insoluble |
Ither chairacteristics | Fluorescent an radioactive, mey form pleochroic halos |
References | [1][2][3][4] |
Zircon (/zɘrkon/~/zɪrkɔn/) (includin hyacinth or yellae zircon) is a mineral belangin tae the group o nesosilicates.
References
[eedit | eedit soorce]- ↑ Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W. and Nichols, Monte C. (ed.). "Zircon". Handbook of Mineralogy (PDF). II (Silica, Silicates). Chantilly, VA, US: Mineralogical Society of America. ISBN 0962209716.CS1 maint: multiple names: eeditors leet (link)
- ↑ Zircon. Mindat
- ↑ Zircon. Webmineral
- ↑ Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of Mineralogy, 20th ed., ISBN 0-471-80580-7