സ്പൊഡുമീൻ
| Spodumene | |
|---|---|
 Walnut Hill Pegmatite Prospect, Huntington, Hampshire County, Massachusetts, US (Size: 14.2 x 9.2 x 3.0 cm) | |
| General | |
| Category | Silicate mineral, pyroxene |
| Formula (repeating unit) | lithium aluminium silicate, LiAl(SiO3)2 |
| Crystal symmetry | Monoclinic - prismatic H-M symbol (2/m) |
| യൂണിറ്റ് സെൽ | a = 9.46 Å, b = 8.39 Å c = 5.22 Å β = 110.17°; Z = 4 |
| Identification | |
| നിറം | Highly variable: white, colorless, gray, pink, lilac, violet, yellow and green, may be bicolored; emerald green - hiddenite; lilac - kunzite |
| Crystal habit | prismatic, generally flattened and elongated, striated parallel to {100}, commonly massive |
| Crystal system | Monoclinic |
| Twinning | Common on {100} |
| Cleavage | Perfect prismatic, two directions {110} ∧ {110} at 87° |
| Fracture | Uneven to subconchoidal |
| Tenacity | Brittle |
| മോസ് സ്കെയിൽ കാഠിന്യം | 6.5–7 |
| Luster | Vitreous, pearly on cleavage |
| Streak | white |
| Specific gravity | 3.03–3.23 |
| Optical properties | Biaxial (+) |
| അപവർത്തനാങ്കം | nα = 1.648–1.661 nβ = 1.655–1.670 nγ = 1.662–1.679 |
| Birefringence | δ = 0.014–0.018 |
| Pleochroism | Strong in kunzite: α-purple, γ-colorless; hiddenite: α-green, γ-colorless |
| 2V angle | 54° to 69° |
| Fusibility | 3.5 |
| Solubility | insoluble |
| Other characteristics | Tenebrescence, chatoyancy, kunzite often fluorescent under UV[അവലംബം ആവശ്യമാണ്] |
| അവലംബം | [1][2][3][4] |
ലിഥിയത്തിന്റെ ഒരു പ്രധാന അയിരാണ് സ്പൊഡുമീൻ. ലിഥിയം ക്ലോറൈഡ് ആക്കി മാറ്റിയ ശേഷം വൈദ്യുത വിശ്ലേഷണം വഴി ലിഥിയം വേർതിരിച്ചെടുക്കുന്നു.
അവലംബം
[തിരുത്തുക]- ↑ Spodumene, Mindat.org
- ↑ Anthony, John W., Bideaux, Richard A., Bladh, Kenneth W., and Nichols, Monte C. (1990). Handbook of Mineralogy. Mineral Data Publishing, Tucson, Arizona
- ↑ Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of Mineralogy, 20th ed., ISBN 0-471-80580-7
- ↑ Deer, Howie and Zussman, Rock Forming Minerals, v. 2 Chain Silicates, Wiley, 1963 pp. 92-98