Effect of the 44Ca, 29Al, 30Si and 18O isotopic substitution on TO and LO vibrational frequencies of Grossular.

IR-TO modes

IR-LO modes

υ

Δυ

υ

Δυ

 

44Ca

29Al

30Si

18O

 

44Ca

29Al

30Si

18O

153.4

-5.5

-0.6

0.0

-1.3

155.2

-5.5

-0.7

0.0

-1.5

183.7

-3.2

-1.0

-0.9

-4.5

189.0

-2.1

-1.4

-1.3

-5.0

206.9

-4.0

-0.4

-1.6

-3.7

208.9

-5.0

-0.2

-1.4

-3.4

242.0

-3.8

-0.8

-2.0

-5.1

248.0

-4.1

-1.2

-2.2

-4.4

303.2

-3.3

-2.2

-0.6

-9.5

305.8

-3.3

-2.0

-0.7

-10.0

357.5

-3.5

-5.4

-1.5

-5.6

357.8

-3.4

-5.6

-1.4

-5.7

394.6

-1.0

-6.4

-0.8

-12.3

406.7

-0.3

-0.8

-0.1

-19.2

407.0

-1.4

-1.7

-0.4

-18.4

407.9

-3.9

-6.1

-1.1

-10.8

424.2

-1.3

-6.8

-1.8

-9.0

424.2

-0.7

-6.6

-1.7

-8.2

441.0

-3.8

-5.7

-0.3

-8.4

480.1

-0.3

-1.6

-0.6

-23.1

480.8

-0.1

-1.4

-0.5

-23.7

508.6

-0.5

-2.8

-4.0

-19.1

509.3

-0.2

-1.5

-4.0

-19.7

539.2

-2.2

-4.6

-2.7

-15.6

546.4

-0.6

-4.0

-2.2

-19.4

583.1

-2.2

-5.9

-1.5

-16.0

625.9

-0.3

-1.7

-4.1

-26.6

634.4

-0.1

-1.4

-2.4

-30.0

829.6

-0.1

-0.2

-11.9

-26.5

845.6

-0.1

-0.3

-12.9

-25.2

849.6

-0.1

-0.3

-12.0

-27.1

879.8

-0.3

-0.2

-10.4

-31.0

901.8

-0.3

-0.2

-12.7

-27.8

1002.5

-0.4

-0.9

-14.4

-30.0

 

Effect of the 44Ca, 59Fe, 30Si and 18O isotopic substitution on TO and LO vibrational frequencies of Andradite.

IR-TO modes

IR-LO modes

υ

Δυ

υ

Δυ

 

44Ca

59Fe

30Si

18O

 

44Ca

59Fe

30Si

18O

125.4

-3.2

-1.2

-0.1

-0.8

126.5

-3.3

-1.3

-0.1

-0.9

148.5

-1.1

-1.6

-0.7

-3.1

149.7

-0.8

-1.7

-0.8

-3.1

184.0

-4.9

-0.4

-0.9

-3.0

187.6

-4.8

-0.4

-1.0

-3.4

206.3

-4.9

-0.9

-1.0

-2.6

209.1

-5.3

-1.1

-0.9

-2.0

243.7

-2.7

-2.7

-1.1

-3.2

244.2

-2.6

-2.8

-1.2

-3.2

271.4

-1.9

-3.1

-0.7

-5.9

271.5

-1.9

-3.0

-0.7

-5.9

288.0

-0.3

-4.1

-0.9

-6.1

313.7

-1.2

-1.5

-0.2

-12.4

313.8

-1.1

-1.6

-0.1

-12.1

323.6

-2.4

-2.7

-1.0

-9.2

340.2

-0.9

0.0

-0.5

-17.5

345.6

-1.3

-0.3

-1.1

-14.6

366.2

-7.8

-0.7

-0.6

-8.6

415.6

-3.3

-1.1

-1.8

-16.6

433.2

-0.1

-0.2

-0.4

-23.9

454.2

-2.4

-1.7

-2.2

-13.7

473.4

-0.3

-0.4

-4.2

-19.5

482.7

-0.6

-0.2

-3.4

-21.2

503.0

-0.4

-0.8

-4.1

-20.4

528.1

-0.6

-0.9

-1.4

-24.8

588.4

-0.4

-0.5

-4.1

-26.1

589.3

-0.3

-0.5

-3.8

-26.7

794.3

-0.1

-0.1

-12.0

-24.4

807.5

0.0

-0.1

-12.6

-23.9

813.3

0.0

-0.1

-11.6

-25.9

848.7

-0.2

0.0

-11.0

-28.5

869.6

-0.2

-0.1

-13.1

-25.9

975.2

-0.4

-0.2

-14.4

-29.8