Proustite crystal physical properties

Crystal symmetry: 3m

Density: 5,49 g/cm^3

Optical spectral range: 0.6-13 mkm

Elastic constants : 10^11 dyn/cm^2 or 10^10 Pa)

5.95	3.171	2.965	0.018	0	0
3.171	5.95	2.965	-0.018	0	0
2.965	2.965	3.975	0	0	0
0.018	-0.018	0	0.997	0	0
0	0	0	0	0.997	0.018
0	0	0	0	0.018	1.389

Photolastic constants :

0.088	0.104	0.11	--	0	0
0.104	0.088	0.11	--	0	0
0.174	0.174	0.186	0	0	0
0.01	0.01	0	--	0	0
0	0	0	0	--	0,01
0	0	0	0	--	-0,008

Refraction indices:

The values for refraction coefficients for the given optical wavelengths.

wavelength, mkm
0.6328	3.019	2.7391
0.6678	2.9804	2.7094
1.014	2.8264	2.5901
1.129	2.8067	2.5756
1.367	2.7833	2.557
1.53	2.7728	2.5485
1.709	2.7654	2.5423
2.5	2.7478	2.5282
3.56	2.7379	2.5213
4.62	2.7318	2.5178

Sound velocity:

direction	polarization	v (10^5 cm/s)
[100]	L	3.2
[010]	L	2.98
[001]	L	2.6
[001]	S	1.28
[010]	[100], S	1.5
[2-10]	L	3.21
[2-10]	S	1.58
[2-10]	S	1.25

Proustite slowness surfaces in important planes

Acousto-optic figure of merit:

sound dir.	sound pol.	light dir.	light pol.	M (10^-18 s^3/g)
[001]	[001]	[010]	[100]	260
[001]	[100]	[010]	[100]	300
[001]	[100]	[100]	[010]	300
[100]	[100]	[010]	[001]	140