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| Calcite, or Iceland Spar, is a strongly birefringent material and is used for polarisers and retardation plates. |
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 Product Data ----------------------------------------------------- |
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| Transmission Range : |
0.3 to 2.3 μm |
| Refractive Index : |
No 1.6654 at 0.51 μm |
| Reflection Loss : |
11.7% at 0.51 μm (2 surfaces) |
| Absorption Coefficient : |
n/a |
| Reststrahlen Peak : |
n/a |
| dn/dT : |
3 (para) 13 (perp) x 10-6 /°C at 0.5 micron |
| dn/dμ = 0 : |
n/a |
| Density : |
2.71 g/cc |
| Melting Point : |
825°C (Decomposes) |
| Thermal Conductivity : |
5.526 (para) 4.646 (perp) W m-1 K-1 at 273K |
| Thermal Expansion : |
25 (para) 5.8 (perp) x 10-6 /°C at 273K |
| Hardness : |
Knoop 155 Moh 3 |
| Specific Heat Capacity : |
852 J Kg-1 K-1 |
| Dielectric Constant : |
8 (para) 8.5 (perp) at 10kHz at 293K |
| Youngs Modulus (E) : |
72.35 (perp) 88.19 (para) GPa |
| Shear Modulus (G) : |
35 GPa |
| Bulk Modulus (K) : |
129.53 GPa |
| Elastic Coefficients : |
C11=137; C12=45; C13=45; C14=(21); C33=79 |
| Apparent Elastic Limit : |
4.83 MPa (700 psi) |
| Poisson Ratio : |
n/a |
| Solubility : |
0.0014g/100g water at 25°C |
| Molecular Weight : |
100.09 |
| Class/Structure : |
Trigonal (hex), R3c, (1011) cleavage |
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| Refractive Index and Optical Transmittance curve---- |
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 Refractive Index(No=Ordinary Ray,): |
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| µm |
No |
Ne |
µm |
No |
Ne |
µm |
No |
Ne |
| 0.20 |
1.9028 |
1.5765 |
0.30 |
1.7196 |
1.5137 |
0.41 |
1.6801 |
1.4954 |
| 0.51 |
1.6653 |
1.4896 |
0.64 |
1.6550 |
1.4849 |
0.71 |
1.6521 |
1.4835 |
| 0.80 |
1.6487 |
1.4822 |
0.91 |
1.6458 |
1.4810 |
1.04 |
1.6428 |
1.4799 |
| 1.50 |
1.6346 |
1.4774 |
1.91 |
1.627 |
1.4757 |
2.10 |
1.622 |
1.4749 |
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Optical
Transmittance Curve of CaCo3 (Reference Data): |
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| Product Notes:------------ -------------------------------------- |
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Calcite is often mined naturally.
Data provided is extracted from our technical handbook of materials. While every attempt has been made to verify the source of the information, ultiQuest Technology accept no responsibility for accuracy of data
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