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 Hedenbergite
 Particle size ≤50 microns
 Geometry of measurements:  ε=0, ι=α

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PHOTOMETRY
Phase angle (deg)    Magnitude in V   Magnitude in B
 1       0           0
 2       0.046       0.049
 3       0.084       0.091
 4       0.113       0.126
 5       0.138       0.151
 7       0.183       0.201
 9       0.219       0.244
11       0.251       0.281
13       0.288       0.318
15       0.320       0.351
20       0.401       0.436

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POLARIMETRY
Phase angle (deg)   Polarization degree in V (%)
 1       -0.14
 3       -0.24
 5       -0.33
 7       -0.36
 9       -0.39
11       -0.38
13       -0.36
15       -0.23
17       -0.22
19       -0.08
21        0.02
23        0.20
25        0.23
27        0.33
29        0.47

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