Calcite

Refractive Index: 1.4861–1.6583
Abbe Number: 49.9–79.2
Crystal System: Uniaxial
Formation: Natural
Dispersion Data: Measured (published fit)
Fits: 1

Refraction Fits

Fit #1— Ghosh 1999

Sellmeier

Valid 0.204–2.172 µm

$n_{ω}$ ordinary

n_{ω}

= 1.6583

V_{ω}

= 49.9

n_{ω}^{2} = 1 + 0.733587 + \frac{0.964643 λ ^{2}}{λ ^{2} - 0.019433} + \frac{1.828315 λ ^{2}}{λ ^{2} - 1.200 e + 2}

$n_{ε}$ extraordinary

n_{ε}

= 1.4861

V_{ε}

= 79.2

n_{ε}^{2} = 1 + 0.358597 + \frac{0.824278 λ ^{2}}{λ ^{2} - 0.010669} + \frac{0.144291 λ ^{2}}{λ ^{2} - 1.200 e + 2}

G. Ghosh, "Dispersion-equation coefficients for the refractive index and birefringence of calcite and quartz crystals," Opt. Commun. 163, 95–102 (1999)

Absorption Specimens

Mexico, Baja California State (Playas de Rosarito Municipality), Rosarito Beach