Input interpretation
pyroxene group
Members
jadeite | spodumene
Images
Images
General properties
| jadeite | spodumene alternate names | jadeita | yunnan jade | yu-stone | chloromelanite | jade | kunzite | alpha-spodumene | hiddenite | triphane formula | Na(Al, Fe^(3+))Si_2O_6 | LiAlSi_2O_6 discovery year | 1863 | 1800
Basic properties
| jadeite | spodumene density | 3.3 g/cm^3 | 3.15 g/cm^3 transparency | translucent | subtranslucent | transparent | translucent birefringence | 0.0165 | 0.016 luster | vitreous | glassy | vitreous | dull Mohs hardness | 6.5 | 6.75 streak | white | white magnetism | nonmagnetic | nonmagnetic color | green | white | pale bluish gray | grayish green | pale purple | grayish white | pink | violet | emerald green | yellow fracture | tough | splintery molar mass | 205 g/mol | 186.1 g/mol
Units
Mineral identifiers
| jadeite | spodumene Strunz ID | VIII/F.01-130 | VIII/F.01-120 Dana ID | 65.1.3c.1 | 65.1.4.1 ICSD number | ICSD10232 |
Crystallographic properties
| jadeite | spodumene crystal system | monoclinic | monoclinic crystal class | 2/m | 2/m unit cell volume | 401.2 Å^3 (cubic ångströms) | 389.9 Å^3 (cubic ångströms) d-spacing | 2.83 Å (ångströms) | 2.42 Å (ångströms) | 2.92 Å (ångströms) | 2.921 Å (ångströms) | 2.793 Å (ångströms) | 4.205 Å (ångströms) intensity | 100% | 90% | 80% | 100% | 90% | 75% molecules per unit cell | 4 molecules per cell | 4 molecules per cell 2V angle | 37 π/90 radians≈74° (degrees) | 71 π/180 radians≈71° (degrees) refractive indices | 1.664 | 1.669 | 1.68 | 0 | 0 | 0 | 1.655 | 1.663 | 1.671 | 0 | 0 | 0 dispersion | r < v | r < v | weak unit cell lengths | 9.418 Å (ångströms) | 8.562 Å (ångströms) | 5.219 Å (ångströms) | 9.52 Å (ångströms) | 8.32 Å (ångströms) | 5.25 Å (ångströms) unit cell angles | 90° (degrees) | 107.6° (degrees) | 90° (degrees) | 90° (degrees) | 110.3° (degrees) | 90° (degrees)