Input interpretation
actinolite (mineral)
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General properties
alternate names | actinolithe | actynolite | byssolite | jade | smaragdite | stralite formula | Ca_2(Mg, Fe^(2+))_5Si_8O_22(OH)_2
Basic properties
density | 3.04 g/cm^3 transparency | translucent | transparent birefringence | 0.026 luster | vitreous | silky Mohs hardness | 11/2 = 5.5 tenacity | brittle streak | white magnetism | nonmagnetic color | green | green black | gray green | black fracture | splintery molar mass | 875.5 g/mol (grams per mole)
Units
Mineral identifiers
Strunz ID | VIII/F.10-20 Dana ID | 66.1.3a.2
Crystallographic properties
crystal system | monoclinic crystal class | 2/m unit cell volume | 909.6 Å^3 (cubic ångströms) d-spacing | 8.38 Å (ångströms) | 3.12 Å (ångströms) | 2.71 Å (ångströms) intensity | 100% | 100% | 90% molecules per unit cell | 2 molecules per cell 2V angle | 157 π/360 radians≈157/2° (degrees) refractive indices | 1.621 | 1.636 | 1.647 | 0 | 0 | 0 dispersion | r < v unit cell lengths | 9.84 Å (ångströms) | 18.1 Å (ångströms) | 5.28 Å (ångströms) unit cell angles | 90° (degrees) | 104.7° (degrees) | 90° (degrees)
Wikipedia summary
Actinolite is an amphibole silicate mineral with the chemical formula Ca_2(Mg_(4.5-2.5)Fe^(2 + )_(0.5-2.5))Si_8O_22(OH)_2.