Empirical electronic polarizabilities of ions for the prediction and interpretation of refractive indices: Oxides and oxysalts

An extensive set of refractive indices determined at λ = 589.3 nm (nD) from ~2600 measurements on 1200 minerals, 675 synthetic compounds, ~200 F-containing compounds, 65 Cl-containing compounds, 500 non-hydrogen-bonded hydroxyl-containing compounds, and ~175 moderately strong hydrogen-bonded hydroxyl-containing compounds and 35 minerals with very strong H-bonded hydroxides was used to obtain mean total polarizabilities. These data, using the Anderson-Eggleton relationship