Raman

Infrared

Assignments

Chemical Phases

S1

S2

S3

S4

S5

S1

S2

S3

S4

S5

-

-

-

123

-

-

-

-

-

-

O-Si-O symmetric bend

Dickite

-

-

144

-

-

-

-

-

-

-

O-Al-O symmetric bend

Kaolin

166

161

163

167

169

-

-

-

-

-

-

Anatase

220

214

214

212

-

-

-

-

-

-

Fe-O symmetric stretch

Hematite

276

273

271

267

271

-

-

-

-

-

Al-OH; OH + K-O translation

304

301

306

303

303

-

-

-

-

-

Fe-O symmetric bend

Magnetite

-

-

327

329

328

-

-

-

-

-

O-H-O bend

Kaolin

-

-

388

-

391

-

-

-

-

-

Fe-O-Fe/ -OH symmetric stretch

Goethite

422

429

432

434

434

-

-

-

-

-

Ti-O bend

Rutile

-

-

-

-

-

442

445

440

444

439

SiO₄ symmetric stretch

Kaolin

-

455

458

-

-

-

-

-

-

-

SiO₄ symmetric stretch

463

466

467

464

466

469

467

-

468

468

Si-O-Si bending

Quartz/Illite

-

487

-

488

486

-

-

470

-

-

-

Kaolin/Geikielite

504

508

512

506

511

-

-

-

-

-

Al-O-Si bend

Feldspar (albite)

-

584

-

-

-

538

536

540

538

541

Si-O-Al deformation

Kaolin/Hematite

-

-

-

-

-

-

641

-

647

649

Si-O-Si bending

Feldspar

668

665

663

665

665

-

-

-

-

-

Fe-O symmetric stretch

Magnetite

-

-

-

-

-

694

694

696

693

696

Si-O

Quartz

705

706

704

706

705

-

-

-

-

-

A1-OH vibrations

Illite

724

722

-

-

-

722

727

724

724

723

O-H bend; Al-O-Si stretch

Kaolin/Feldspar/ Geikielite

768

767

750

749

750

751

-

-

-

-

Al-O-Si stretch

Kaolin

-

774

-

-

-

779

780

777

776

778

Si-O

Quartz

790

792

790

792

790

-

-

-

-

-

Al-O-Si bend

Illite/Kaolin

-

-

-

-

-

799

795

797

794

798

Si-O bend

Quartz/Kaolin

-

-

-

-

-

850

-

839

-

847

Al-O-H stretch

Illite/Montmor

914

920

912

910

915

918

916

920

918

917

Al-OH deformation

Kaolin/Montmor

935

946

935

926

940

939

940

938

942

938

Al-OH deformation

-

-

-

-

-

1016

1018

1015

1014

1018

Si-O stretching

-

-

-

-

-

1042

1039

1041

1040

1040

Si-O stretching

Kaolin

-

-

-

-

-

1101

1104

1102

1102

1105

-

-

-

-

-

-

1118

1120

1117

1118

1116

Si-O stretching

-

-

-

-

-

1475

1470

-

-

1470

-

Calcium oxalate

-

-

-

-

-

1510

-

1516

1521

-

-

Carbonates

-

-

-

-

-

1620

-

1614

-

-

-

Pyrophanite

-

-

-

-

-

2842

2840

2841

2842

2842

C-H antisymmetric stretching

Organic material

-

-

-

-

-

-

-

2926

2924

2926

C-H symmetric stretching

Organic material

-

-

-

-

-

2954

2956

-

-

-

C-H symmetric stretching

Organic material

3620

3621

3622

3622

3623

3620

3622

3622

3620

3621

v4 Stretch inner OH

Kaolin/Illite/ Montmor

3654

3652

3652

3650

3654

3654

3650

3652

3652

3654

v3 Stretch inner surface OH

Kaolin

3664

3664

3667

3666

3666

3665

3668

3666

3663

3667

v2

3697

3681

3692

3689

3699

3696

3692

3694

3697

3692

v1 Stretch inner surface OH

Kaolin