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527

T A B L E W.--INDEX



O F REFRACTION O F SELECTED B l A X l A L M I N E R A L S

(continued)



Biaxial positive minerals (continued)

Index of refraction

P

na



n,9



1.772

1.877

1.900

1.871

1.950

2.200

2.170

2.240

2.270

2.240

2.260

2.310

2.310

2.380

2.374

2.370

2.583

2.510



1.810

1.882

1.907

1.920

2.043

2.217

2.220

2.240

2.270

2.270

2.320

2.360

2.370

2.390

2.404

2.500

2.586

2.610



9

1.863

1.894

2.034

2.010

2.240

2.260

2.320

2.530 (Li)

2.300

2.310

2.430 (Li)

2.460 (Li)

2.660 (Li)

2.420 (Li)

2.457

2.650 (Li)

2.741 .

2.710



1.394

1.407

1.405

1.430

1.433

1.340

1.447

1.457

1.476

1.483

1.410

1.420

1.494

1.334

1.494

1.444

CaO .AlzOa .3SiOz .3 H 2 0

1.512

CaO .AIzOa*4SiOz . HzO

1.513

KzO-AlZOs.6SiOz

1.518

Same as Drecedinz

1.522

(Na. K)zO.AlzOa'6SiOz

1.523

NazO.CaO-2SOs

1.515

4(Ma Fe)O*4AIzOa*10SiO2*H2O

1.534

. . .

CLOYSOa 5HzO

1.516

Ab4An

1.539

Naz0 - 2 B e0 *P2O5

1.552

AlzOa *2SiOz * 2HzO

1.561

Kz0.4(Mg, F e ) O ~ 2 A 1 z 0 3 ~ 6 S i 0 z ~ H1.541

z0

CaO * 2 U0 8P.O.

* .8 H z 0

1.553

"An" = Ca0*A1z0a.2SiOZ

1.576

1.520

LazO. .3coz '9HzO

AI2O9.4SiO~-H20

1.552

1.539

1.572

1.561

1.579

AlzOa .Pz05*2LiF

Al.0. * 3SiO.. 2 ( K . Li) F

1.560

1.562

1.600

(continued)



1.396

1.414

1.425

1.452

1.455

1.456

1.470

1.480

1.480

1.487

1.492

1.495

1.498

1.505

1.505

1.516

1.519

1.524

1.524

1.526

1.529

1.532

1.538

1.539

1.543

1.558

1.563

1.574

1.575

1.584

1.587

1.588

1.589

1.590

1.590

1.593

1.598

1.606

1.616



1.398

1.415

1.440

1.458

1.461

1.459

1.472

1.484

1.483

1.486

1.542

1.518

1.500

1.506

1.516

1.523

1.519

1.525

1.526

1.530

1.531

1.536

1.540

1.546

1.547

1.561

1.565

1.574

1.577

1.588

1.613

1.600

1.589

1.590

1.594

1.597

1.605

1.606

1.627



Mineral



........

........

.........

.......

...........

........



Olivenite

Anglesite

Titanite

Claudetite

Sulfur

Cotunnite

Huebnerite ......

Manganite .......

Raspite

Mendipite ........

Tantalite

Wolframite

Crocoite

Pseudobrookite

Stibiotantalite ....

Montroydite .....

Brookite .........

Massicot .........



..........

........

......

.........

...



Formula



4CuO * ASzOs' HzO

PbO*SOa

CaO*TiOz*

SiO,

AszOa



S



PbCL



2 ........

P b 0 * PbC1.

(Fe, Mn ) O- Taz0 5

(Fe, Mn)O*WOa

PbO CrOJ

2FezOa .3TiOz

Sbz03*Ta205

HgO

TiOz

PbO

Biaxial negative minerals



Mirabilite ........

Thomsenolite

Natron

Kalinite .........

Epsomite ........

Sassolite .........

Borax ...........

Goslarite ........

Pickeringite .....

Bloedite .........

Trona ...........

Thermonatrite

Stilbite

Niter ............

Kainite ..........

Gaylussite .......

Scolecite .........

Laumontite ......

Orthoclase

Microcline .......

Anorthoclase

Glauberite .......

Cordierite

Chalcanthite .....

Oligoclase

Beryllonite ......

Kaolinite ........

Biotite ...........

Autunite .........

Anorthite

Lanthanite .......

Pyrophyllite

Talc

Hopeite .........

Muscovite .......

Amblygonite .....

Lepidolite ........

Phlogopite .......

Tremolite ........



....

..........



...

..........



.......

.....

.....

.......



........

.....

............



Na.0. SO.. 10H20

NaF * CaFi- Al Fa .HZO

NazO.COz-10HzO

KzO * AIzOa*4SOs.24H,O

MzO .SO 1 7 H_2 0B,& .HzO

NazO* 2Bz0a * 10HzO

ZnO SO, .7 H 2 0

MgO *AI~Oa*4SOa.22HzO

NazO h f g o '2SOa' 4HzO

3Naz0.4COz.5Hz0

Naz0 . C 0 2.H 2 0



.



.

.



SMITHSONIAN PHYSICAL TABLES



.



'



528

T A B L E 548.-lNDEX



O F REFRACTION O F SELECTED B l A X l A L MINERALS

(concluded)



Biaxial negative minerals (continued)

Index of refraction



Mineral



Actinolite . . . . . . . .

Wollastonite

Lazulite

Danburite

Glaucophane

Andalusite

Hornblende

Datolite

Erythrite ........

Monticellite ......

Strontianite ......

Witherite ........

Aragonite ........

Axinite ..........

Dumortierite .....

Cyanite .........

Epidote ..........

Atacamite .......

Fayalite

Caledonite .......

Malachite ........

Lanarkite ........

Leadhillite .......

Cerusite .........

Laurionite .......

Matlockite ......

Baddeleyite

Lepidocrocite ....

Limonite ........

Goethite .........

Valentinite ......

Turgi te ..........

Realgar .........

Terlinguaite .....

Hutchinsonite

Stibnite ..........



.....

.........

.......

.....

.......



......

.........



.........



......



....



-



Cit0*3(Mg.

.

Fe)O-4SiOz

1.630

1.614

C a u * >iuZ

1.632

1.620

1.634

1.612

(Fe. Mg) 0 * Al.0. P.O.. H 10

Ca0.Bz03.2SiOz

1.634

1.632

Na10 -2Fe0 * A1.03 .6SiOz

1.621

1.638

AIzO3*SiOz

1.638

1.632

Contains NazO. MgO. FeO. SiOz. etc. 1.634

1.647

2Ca0-2SiOZ.B~O3.HzO

1.625

1.653

3CoO .AszO.. 8Hz0

1.626

1.661

CaO .Mg0.SiOZ

1.651

1.662

sr- -1.520

1.667

BaO*CO

1.529

1.676

1.531

CaO.CO,

1.682

6(Ca. Mn) 0 ~ 2 A 1 z 0 ~ ~ B z 0 3 ~ 8 S i 01.678

z ~ H z 0 1.685

1.678

8 A 1 z 0 . ~ B z 0 ~ ~ 6 S i 00z ~ H .

1.686

Al2OZ.SiO,

1.712

1.720

4CaO.3(Ai, Fe)z03.6Si0z.Hz0

1.729

1.763

3CuO * CuCIz.3HzO

1.831

1.861

2Fe0 .Si0,

1.864

1.824

2( Pb. CU)O*SO3'HzO

1.866

1.818

2CuO.COz.HzO

1.875

1.655

2 P b 0 * so3

1.930

1.990

4 P b 0 .SO,.2CO,*H,O

1.870

2.000

P

h

0

.

C

0

2

......

1.804

2.076

PbCIz .PbO .HzO

2.077

2.116

PbO .PbClz

2.040

2.150

ZrOz

2.130

2.1W

Fe.0 .. H. 0

1.930

2.210

ZFLO, ~ 3 ~ in

2 0part

2.170

2.290

Fe203.HZO

2.210

2.350

Sb. 0 s

2.180

2.350

2FezO3.H~Oin part

2.550

2.450

ASS

2.460

2.590

HgzOCl

2.350

2.640

(TI. Ag)zS*PbS.ZAszS3

3.078

3.176

SbzSs

3.194

4.303



SMITHSONIAN PHYSICAL TABLES



.



.



1.641

1.634

1.643

1.636

1.638

1.643

1.652

1.669

1.699

1.668

1.667

1.677

1.686

1.688

1.689

1.728

1.780

1.880

1.874

1.909

1.909

2.020

2.010

2.078

2.158

2.150

2.200

2.510

2.310

2.350 (Li)

2.350

2.550 (Li)

2.610 (Li)

2.660 (Li)

3.188

4.460



529



T A B L E 5 4 9 . 4 N D E X OF REFRACTION O F MISCELLANEOUS

BI A X I A L CRYSTALS

Index of refraction

Crystal



Ammonium oxalate, (NH,)zC20,*HZ0.. ....

Ammonium acid tartrate,

(NH,)H(C,H,Oa) ......................

Ammonium tartrate, (NH,)zC,HiOa., ......

Antipyrin, CuHlzNOz .....................

Citric acid, C E H ~ O T - H ..................

~O.

Codein, Cl,Hz1N03*H~0..................

Mag::sium

carbonate, MgCO3.3H20.......

sulfate, MgSOI*7Hz0 .........



.......................

.......................

Potassium bichromate, KzC1-207 ............

chymate, K2Cr04 .............

........................

'

nitrate, KNOI .................

sulfate. KZS 0, .................

........................

........................

Racemic acid, GHeOa.Hz0. ...............

Resorcin, CeHeOZ ........................

"



"



Sodium bichromate, NazCrzO7-2H20.

.......

"

acid tartrate, NaH(C,H,Oe) -2H20..

Sugar (cane), C,zHtzOll. ..................



............................

.............................

Tartaric acid, C'HaOa (right-), ............

Zinc sulfate, Z n S 0 4 . 7 H z 0 . ................

"

..............................

..............................



flu



D



1.4381



D

D

D

D

D

D

D

Cd, 226p

H, .65&

D

D

red

D

F

D



1.5188



C



yellow

D

D

red

TI

D

Li

D



F

D



1'



I'



C



1'



T A B L E 55O.-SPECIFIC



511635

5 17645

523586

529516

573574

580410

584460

605381

611572

611588

617366

617550

620362

649338

720293



.................

................

.................

.................

.................

.................



................

.................

.................

.................

.................

.................

.................



.................

.................



-



1.5697

1.4932

1.5390

1.495

1.432

1.4990

1.4307

1.7202



-



1.6873

1.3346

1.4976

1.4932

1.4911

-



-



1.6610

1.5422

1.5397

1.5379

1.4953

1.4620

1.4568

1.4544



"B

1.5475



9

1.5950



1.5614

1.581

1.6935

1.4977

1.5435

1.501

1.455

1.5266

1.4532

1.7380

1.7254

1.722

1.5056

1.4992

1.4946

1.4928

1.526

1.555

1.6994

1.5332

i.568~

1.5667

1.5639

1.5353

1.4860

1.4801

1.4776



1.5910



-



1.7324

1.5089

1.526

1.461

1.5326

1.4584

1.8197



-



1.7305

1SO64

1SO29

1.4980

1.4959



-



1.7510

1.5734

1.5716

1.5693

1.6046

1.4897

1.4836

1.4812



GRAVITY, COEFFICIENT O F EXPANSION, A N D S T A I N

CLASS O F OPTICAL GLASS *



5T----BL CG

2.48

2.53

2.53

2.73

3.21

3.27

3.31

3.49

3.57

3.58

3~64

3.66

3.67

3.91

4.51

~



~~



Melt No.

EK-110-5328 ....................

EK-32-2641 .....................

EK-33-2734s ....................

EK-45-29 .......................



...

...

...

...

3.21

...



2.53



3.47

3.56

3.40



A



I



- 40" to 0"



4.1

4.5

4.7

4.6



0" to 40'



0" to 100" 0" to 300"



BL



BL



BL



73.0

62.0

75.8

70.2

74.2



77.0

65.2

80.2

73.0

78.0



79.6

67.5

83.0

74.5

80.0



76.2



80.0



81.9



57.8

60.8

70.8



61.2

61.0

73.0



73.5



58.0

57.8

53.5

57.0



...



...

...



...



Stain

class

for



Cofficient of expansion

mean values X 107



Specific gravity



Glass type



7



Spectrum

line



...



...

...



..



80



..

..



...



99



...



64.1

66.9

74.2



86

70

71

89



75.2



77.3



..



61.2

61.2

57.0

60.5



63.5

63.9

59.4

63.4



...

...

...

...



...

...



...

...



BL



CG



..

1



B L Bausch 8. Lomh Optical glass.

E K , Eastman Rodak glass.

CG, Corning glass.

Th; first 15 glass types in column 1 are described in Table 524 of N B S glasses.

*Types of glass in class 1 or 2 are not likely to stain even when used a s exposed surfaces in tropical climates.

Glasses in class 5 are liable to stain when exposed to rain, moisture condensation, or fingerprints in any climate.

Other glasses are intermediate in stain resistance.

SMITHSONIAN PHYSICAL TABLES



530

TABLE 551.-lNDEX



OF REFRACTION O F SOME LIQUIDS RELATIVE TO AIR



.

Indices of refraction

Substance



Density



Acetaldehyde. C H 3 C H 0 ......... .780 20

Acetone. CH3COCH3 ............ .791 20

Aniline. CsHs.*NHz .............. 1.022 20

Alcohol. methyl. CH3.OH ........ .794 20

ethyl. CzH5.0H ........ .808

0

....................

.800 20

" dnldt ..............

20

n-propyl C3H7.0H ...... .804 20

Benzene CaHa .................. .880 20

CsHa dn/dt ............ . 20

Bromnaphthalene. CloHiBr ....... 1.487 20

Carbon

disulfide CS, ............ 1.293

0

"

. . . . . . . . . . . . . . . . . . . 1.263 20

tetrachloride. CCl. ....... 1.591 20

Chinolin. CoH7N ................ 1.090 20

Chloral. CC13.CH0 ............. 1.512 20

Chloroform. CHCL ............. 1.489 20

Decane. CloHz2 ...................728 14.9

Ether. ethyl. C,H~*O.C.Hs. . . . . . . .715 20

dn/dt ............. . 20

Ethyl nitrate. C 2 H 5 * O - N 0 3...... 1.109 20

Formic acid. H*CO,H ............ 1.219 20

Glycerine. C3H803............... 1.260 20

Hexane. CH3(CHz).CH3 ... !. . . . . .660 20

Hexylene. CH3(CH,)3CH.CHz . . . .679 23.3

Methylene iodide CH.1. ........... 3.318 20

dn/dt .......... . 20

Naphthalene. CloH8 . . . . . . . . . . . . . . .962 98.4

Nicotine. GOHI.N. ............... 1.012 22.4

Octane. CHs(CHz)aCH3 . . . . . . . . . .707 15.1

Oil. almond ...................... 92

0

anj;e seed ...................99

15.1

........................ 99 21.4

bitter almond ............... 1.05

20

cassia ......................

- 10

.......................

- 22.5

23.5

cinnamon .................. 1.05

olive .......................

0

.92

.

rock .......................

0

turpentine .................. .87

10.6

................... .87 20.7

Pentane. CH3(CH&CH3 ......... .625 15.7

Phenol. CeHsOH ................ .060 40.6

..........................

02 1 82.7

Styrene. CeH5CH.CHz . . . . . . . . . . .910 16.6

Thymol. CloH1.0 . . . . . . . . . . . . . . . . 982

.

Toluene. CH3.CaHs . . . . . . . . . . . . . . .86

20

Water. HzO ....................

- 20

. 0

' ..........................

. 40

..........................

. 80

..........................



.

.

.

.



.



.



.



.



SMITHSONIAN PHYSICAL TABLES



0.397r



H



.



.

.

1.3399



.



.



.

.

.



.



1.7289

1.7175

1.6994



.



.

.



1.463



.

.

.



.



.

.

.

.



1.8027



.

.

.

.

.



1.6084



.



.



1.7039

1.6985



.

.

.



1.4939

1.4913



.



.



.

.

.

.



1.3435

1.3444

1.3411

1.3332



0.4341



G'



0.4861



F



1.3394 1.3359

1.3678 1.3639

1.6204 1.6041

1.3362 1.3331

1.3773 1.3739

1.3700 1.3666

--.0004 -4004

1.3938 1.3901

1.5236 1.5132

--.OW7 -.om

1.7041 1.6819

1.6920 1.6688

1.6748 1.6523

1.4729 1.4676

1.6679 1.6470

1.4679 1.4624

1.458

1.4530

1.4200 1.4160

1.3607 1.3576

--.0006 --.0006

1.395

1.392

1.3804 1.3764

1.4828 1.4784

1.3836 1.3799

1.4059 1.4007

1.7692

- -BOO7

1.6031

1.5439

1.4097 1.4046

1.4847

1.5743

1.5647

1.5775 1.5623

1.6389

1.6314

1.6508

1.4825

1.4644

1.4817

1.4793

1.3645 1.3610

1.5684 1.5558

1.5356

1.5816 1.5659

1.5386

1.5170 1.5070

1.3404 1.3372

1.3413 1.3380

1.3380 1.3349

1.3302 1.3270



0.589fi



D



0.656~



C



1.3316 1.3298

1.3593 1.3573

1.5863 1.5793

1.3290 1.3277

1.3695 1.3677

1.3618 1.3605

-.0004 -.0004

1.3854 1.3834

1.5012 1.4965



-.0006



--.o006



1.6582 1.6495

1.6433 1.6336

1.6276 1.6182

1.4607 1.4579

1.6245 1.6161

1.4557 1.4530

1.4467 1.4443

1.4108 1.4088

1.3538 1.3515

--.0006 -.0006

1.3853 1.3830

1.3714 1.3693

1.4730 1.4706

1.3754 1.3734

1.3945 1.3920

1.7320

i.7417

-.0007

-.0006

1.5823 1.5746

1.5239

1.5198

i14007 1.3987

1.4782 1.4755

1.5572 1.5508

1.5475 1.5410

1.5391

1.6104 1.6007

1.6026 1.5930

1.6188 1.6077

1.4763 1.4738

1.4573 1.4545

1.4744 1.4715

1.4721 1.4692

1.3581 1.3570

1.5425 15369

1.5174

1.5485 1.5419

1.5228

1.4955 1.4911

1.3330 1.3312

1.3338 1.3319

1.3307 1.3290

1.3230 1.3213