Table 2: Peak position $\lambda _{\rm p}$, relative deviation between the positions at room temperature and 10 K $\Delta \lambda _{\rm p}/\lambda _{\rm p}$, and 10 K peak mass absorption coefficient  $\kappa _{\rm p}$ of the phyllosilicate FIR bands. The difference of $\kappa _{\rm p}$ to the continuum baseline is additionally given in parentheses.
Talc Picrolite
$\lambda _{\rm p}$ ($\mu $m) $\Delta \lambda _{\rm p}/\lambda _{\rm p}$ (%) $\kappa _{\rm p}$ (cm2 g-1) $\lambda _{\rm p}$ ($\mu $m) $\Delta \lambda _{\rm p}/\lambda _{\rm p}$ (%) $\kappa _{\rm p}$ (cm2 g-1)
300 K 200 K 100 K 10 K 300/10 K 10 K 300 K 200 K 100 K 10 K 300/10 K 10 K
- - 26.5 26.5 - 1000 (400) 25.6 25.5 25.4 25.5 0.4 1700 (600)
28.9 28.9 28.8 28.8 0.3 450 (340) 26.8 26.8 26.8 26.7 0.4 1300 (800)
32.0 32.0 31.9 31.9 0.3 110 (60) 31.4 31.4 31.4 31.3 0.3 190 (140)
- 34.2 34.0 34.0 - 62 (30) 32.7 32.7 32.6 32.6 0.3 2300
38.7 38.4 38.4 38.3 1.1 140 (110) 42.9 42.6 42.5 42.4 1.2 530
43.2 43.2 43.0 42.9 0.7 51 (30) 49.3 49.3 49.2 49.1 0.4 34 (25)
56.5 56.5 56.0 56.0 0.9 130 (60) 77.0 76.5 76.0 76.0 1.3 130
59.5 59.5 59.0 59.0 0.8 150 (90)            
98.51 98.0 97.0 95.5 3.1 45 (20)            
Montmorillonite Chamosite
$\lambda _{\rm p}$ ($\mu $m) $\Delta \lambda _{\rm p}/\lambda _{\rm p}$ (%) $\kappa _{\rm p}$ (cm2 g-1) $\lambda _{\rm p}$ ($\mu $m) $\Delta \lambda _{\rm p}/\lambda _{\rm p}$ (%) $\kappa _{\rm p}$ (cm2 g-1)
300 K 200 K 100 K 10 K 300/10 K 10 K 300 K 200 K 100 K 10 K 300/10 K 10 K
26.8 27.0 27.1 27.2 -1.5 470 (100) 29.4 29.4 29.2 29.1 1.0 1400 (550)
29.0 29.0 29.0 29.0 - 760 (440) 35.2 35.2 35.0 34.6 1.7 940 (430)
33.0 32.9 32.9 32.8 0.6 280 (45) 41.0 40.5 40.0 40.0 2.5 440 (60)
49.7 49.7 49.6 49.5 0.4 190 (55) - 42.5 42.5 42.5 - 400 (80)
60.0 60.0 60.0 60.0 - 134 (8) 49.5 49.5 49.0 49.0 1.0 310 (80)
- - 66.0 66.0 - 129 (3) 72.5 72.0 72.0 71.5 1.4 220 (90)
- 72 72 72 - 134 (15) 77.0 76.5 76.5 76.5 0.6 190 (80)
86 84 82 80 7.0 129 (15) 91.5 90.5 89.0 89.0 2.8 220 (120)
105 104 103 103 1.9 110 (25) - - 108 108 - 65 (10)
            277 274 273 272 0.7 31 (19)

1 This value corresponds to 255 K (compare Fig. 2).

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