2 Physical Properties

Physical Properties of Isotropic Crystalline Materials Cubic Density Hardness Cleavage Solubility ("C)

material 3 (g/cm) 2 (kg/mm) plane (g/100 g H20)

AgBr 6.473 7 None 1.2 X lQ-5 (20) AgCl 5.56 9.5 None 1.5 X 10-4 (20) AlAs 3.729 (111 )-p Insoluble Al23027N5 (ALON) 3.713 1850 Insoluble AlP 2.40 Slightly soluble AlSb 4.26 As20 3 3.87 1.5 (Mohs) (111) Soluble Ba(N03h 3.24 None Soluble Ba2ZrzSi3012 Insoluble Ba3Al20 6 5.008

Physical Properties of Isotropic Crystalline Materials-continued Cubic Density Hardness Cleavage Solubility (0 C)

Ba3MgTa209 6.435 Insoluble BaF2 4.83 82(500) (111 )-p 0.12 BaFrCaF2 4.89 (111 )-p 0.16 Bi12Ge02o 9.22 4.5(Mohs) None Insoluble Bi12Si020 9.20 None Insoluble Bi12Ti02o 9.069 None Insoluble Bi4Ge30 12 7.13 5.0 (Mohs) None Insoluble Bi4Si3012 6.60 4.5 (Mohs) (11 0)-i Insoluble BN 3.48 4600 (111) Insoluble BP 2.97 3600 Insoluble C (diamond) 3.51 5700-10400 (111) Insoluble Ca12Al14033 2.68 None Insoluble Ca2LiMg2 V 3012 3.447 Ca2LiZn2 V3012 3.726 Ca2NaMg2V3012 3.414 Ca2NaZn2 V 3012 3.976 Ca2Sb20 7 None Insoluble Ca3Al2Ge3012 4.357 None Insoluble Ca3Al2Si3012 3.60 7 (Mohs) None Insoluble Ca3Ga2Ge3012 4.837 None Insoluble Ca3Gd(P04h 3.900 Insoluble Ca3In2Ge3012 5.063 None Insoluble Ca3La(P04)3 3.678 Insoluble Ca3Lu2Ge3012 5.668 None Insoluble Ca3Sc2Ge3012 4.203 None Insoluble Ca3Sc2Si3012 3.514 None Insoluble CaF2 3.180 158 (111)-p 1.6 X l0-3 (18) CaLa2S4 4.524 570 CaO 3.3 3.5 (100)-p 0.13(10) CaTi03 3.98 Insoluble CaY2Mg3Ge3012 None Insoluble Cd2Nb207 6.216 None Insoluble Cd2Sb207 None Insoluble Cd3Sc2Ge3012 5.749 None Insoluble CdB204 4.58 CdF2 6.64 (111)-p 4.4 (20) CdGa204 None Insoluble Cdln20 4 7.00 None CdO 8.24 3 (Mohs) (Ill) CdTe 6.20 56 (110)-p Very slightly soluble Cs2KLaF6 3.95 None Slightly soluble Cs2NaYF6 4.397 None Slightly soluble CsBr 4.44 19.5 None 124 (25)

Section1:CrystaineMaterials37

PhysicalPropertiesofIsotropicCrystallineMaterials-continued CubicDensityHardnessCleavageSolubility(0 C)

material3(g/cm)2(kg!mm)plane(g/100gH20)

CsCaF34.123Slightlysoluble CsCdF35.62 CsCI3.9None186(20) CsF4.638(100)-p367(18) Csl4.5101-2(Mohs)None44(0) CsSrF34.299 Cu206.113.5(Mohs)(111)-iInsoluble CuBr4.7721Veryslightlysoluble CuCI4.142.5(Mohs)(110)-p6.1xiQ-3 Cui5.682.5(Mohs)(110)-p GaAs5.316721(111)-p<5XI0-3(25) GaP4.13(111)-pInsoluble GaSh5.619(111)-pInsoluble Gd2Ti20 76.521114NoneInsoluble Gd3Ga50 127.026.5-7(Mohs)NoneInsoluble Gd3Sc2Al30125.827.5(Mohs)NoneInsoluble Gd3SczGa30127.0(Mohs)NoneInsoluble Ge5.35800(Ill)Insoluble Hg2Sb20 7NoneInsoluble HgSe8.266Insoluble HgTe InAs5.66330(111)-pInsoluble InP4.8430(111)-pInsoluble InSb5.78225(111)-pInsoluble KzMgz(S04h2.833.5(Mohs)NoneSlightlysoluble K2NaAIF62.992.5(Mohs)NoneSlightlysoluble K2NaGaF63.34NoneSlightlysoluble K3AIF6NoneSoluble KBr2.757.0(200)(100)-p65.2(20) KCaF32.709 KCdF34.264 KCI1.9849.3(200)(100)-p34.7(20) KF2.482(Mohs)(100)-p92.3(18) KI3.125(100)-p144(20) KMgF33.152.5(Mohs)NoneInsoluble KTa037.015Insoluble KY3F104.3124.5(Mohs)NoneInsoluble La3Lu2Ga30127.0(Mohs)NoneInsoluble Li2BeF42.289 Li2CdCI42.956 Li2MgCI42.119 LiAI50 83.625NoneInsoluble LiBaF35.242

Physical Properties of Isotropic Crystalline Materials-continued Cubic Density Hardness Cleavage Solubility ("C)

LiBr 3.464 (100)-p 145 (4) LiCl 2.068 (100)-p 63.7 (0) LiF 2.635 110 (600) (100)-p 0.27 (18) LiGa50 8 5.819 None Insoluble Lil 4.076 (100)-p 168 (20) Lu20 3 9.426 Lu2Ti20 7 7.31 1264 None Insoluble Lu3Al50 12 6.695 7.5 (Mohs) None Insoluble Lu3Ga5012 7.828 7.0 (Mohs) None Insoluble Lu3Sc2Ga3012 7.0 (Mohs) None Insoluble LuSc03 Insoluble Mg2Ti04 3.546 Insoluble Mg3Al2Si3012 3.58 7.5 (Mohs) None Insoluble MgA120 4 3.58 1140 (1000) None Insoluble MgGa20 4 5.37 7.0 (Mohs) None Insoluble MgO 3.58 690 (600) (100)-p 6.2 X 10-4 MnO 5.44 5.5 (Mohs) (100)-p Insoluble Na2BiMg2 V 3012 4.388 Na2BiZn2 V 3012 4.919 Na2CaSi04 2.821 Insoluble Na2GdMg2V3012 4.115 Na2LuMg2 V 3012 4.332 Na2YMg2V3012 3.668 Na3Li3Al2F 12 2.77 2 (Mohs) (011)-i Na3Li3Ga2F 12 3.20 2 (Mohs) None Na3Li3ln2F 12 3.54 2 (Mohs) None Na3Li3Sc2F 12 2.66 2 (Mohs) None Na3Sc2 V30 12 3.342 Na8Al6Si6024Cl2 2.27 5.5 (Mohs) (110)-i Insoluble NaBr 3.203 (100)-p 91 (20) NaCdMg2F7 3.968 NaCdZn2F7 4.838 NaCI 2.165 18 (200) (100)-p 39.8 (0) NaF 2.588 60 (100)-p 4.2 (18) 5NaF-9YF3 4.22 2 (Mohs) None Insoluble Nal 3.667 (100)-p 179 (20) Pb(N03h 4.530 Pb2Sb20 7 None Insoluble PbF2 8.24 200 (111)-p 0.064 (20) PbS 7.5 2.5-2.75 (Mohs)(lOO)-p 6.6 X l0-5 PbSe 8.10 (100)-p Insoluble PbTe 8.164 (100)-p Insoluble Rb2KGaF6 3.751 None

Physical Properties of Isotropic Crystalline Materials-continued Cubic Density Hardness Cleavage Solubility ("C)

material 3 (glcm) 2 (kglmm) plane (g/100 g H20)

Rb2NalnF6 4.302 None RbBr 3.35 (100)-p 98 (5) RbCaF3 3.632 RbCl 2.80 (100)-p 77 (0) RbF (100)-p 367 (18) Rbl 3.55 1.0 (Mohs) (100)-p 152(17) RbZnF3 5.007 Sb20 3 5.50 2-2.5 (Mohs) (111)-i Insoluble Sc20 3 3.840 Insoluble Si 2.33 1150 (111) Insoluble

~-SiC 3.214 2880 Insoluble ~-SiC (CVD) 3.21 2540 Insoluble Sr3Al20 6 4.136 Sr3Gd(P04h Insoluble Sr3In2Ge3012 5.632 None Insoluble Sr3La(P04h Insoluble Sr3SczGe3012 4.838 None Insoluble Sr6Nb20ll 5.0 Insoluble Sr6Ta20 11 6.088 Insoluble SrF2 4.24 130 (111)-p 0.012 (20) SrSn03 6.432 Insoluble SrTi03 5.122 595 None Insoluble SrV03 5.46 Th02 9.86 600 None Insoluble Tl(Br,l) 7.371 40 (500) None Tl(Cl,Br) 7.192 39 (500) None <0.32 (20) Tlz03 10.35 Insoluble TlBr 7.557 12 (500) None 0.05 (25) TIC! 7.604 13 (500) None 0.32 (20) Yz03 5.01 875 1.8 x 1 o-s (20) Y2Ti20 7 4.987 1099 None Insoluble Y3AI50 12 4.56 135 (200) None Insoluble Y3GasOJ2 5.79 7.0 (Moh) None Insoluble Y3In2Ga3012 6.03 None Insoluble Y3SczAl3012 4.55 None Insoluble Y 3Sc2Ga30 12 5.184 7.0 (Moh) None Insoluble Zn4B60 13 4.19 ZnA120 4 4.62 7.5 (Moh) None Insoluble ZnGa20 4 6.089 7.0 (Moh) None Insoluble

~-ZnS 4.09 178 (110)-p 6.9 X 10-4 (18) ~-ZnS (CVD) 4.04 178 ZnSe 5.42 137 (11 0)-p 0.001(25) ZnSiAs2 4.747 Insoluble

Physical Properties of Isotropic Crystalline Materials-continued Cubic Density Hardness Cleavage Solubility ("C)

ZnTe 6.34 82 (110)-p Insoluble Zr02 5.64 990 None Insoluble

1.2.2 Uniaxial Crystals

Physical Properties of Uniaxial Crystalline Materials Uniaxial Density Hardness Cleavage Solubility ("C) material 3 (glcm) 2 (kglmm) plane (g/100 g H 20)

Ag2Hgi4 6.091 Ag3AsS3 5.49 2-2.5 (Mohs) (1011) Insoluble Ag3AsSe3 6.521 Insoluble Ag3SbS3 5.82 2.5 (Mohs) (1011)-i Insoluble AgAsS2 Insoluble AgGaS2 4.702 (112)-p Insoluble AgGaSe2 5.70 (112)-p Insoluble Agi 5.7 1.5 (Mohs) (0001)-p Insoluble Al20 3 3.98 1370 (1000) None 9.8 X 10-5 A1As04 3.359 Insoluble AlF3 3.192 A1Ga03 4.78 (0001)-p Insoluble AlN 3.261 Insoluble AlP04 2.566 5 (Mohs) None Insoluble AlTiTa06 6.26 Insoluble Ba2B50 9Cl 3.762 Insoluble Ba2MgAlF9 4.157 Ba2MgF6 5.08 Insoluble Ba2MgGez07 4.79 (001) Insoluble Ba2MgSi20 7 4.265 (001) Insoluble Ba2Sc40 9 5.372 Insoluble Ba2TiSiz08 4.43 3.80 (001)-i Insoluble Ba2ZnF6 5.514 Insoluble Ba2ZnGe207 (001) Insoluble Ba2ZnSi20 7 (001) Insoluble Ba2ZrSi208 Insoluble Ba3(V04)z 5.176 Ba3Sc40 9 5.318 Insoluble Ba3SrNbz09 Insoluble Ba3SrTaz09 Insoluble Ba5(As04)}F 5.073 (1011 )-i Insoluble

tallineMaterials41

PhysicalPropertiesofUniaxialCrystallineMaterials-continued UniaxialDensityHardnessCleavageSolubility("C) material3(glcm)2(kglmm)plane(g/100gH20)

Ba5(As04)3Cl5.0864.5(Mohs)(0001)-iInsoluble Ba5(P04)3Cl4.802Insoluble Bas(P04)3F4.81(1011)-iInsoluble Bas(V04)3Cl4.728(1011)-iInsoluble Bas(V04)3F4.766(1011)-iInsoluble Bll(;Sc60Is5.115Insoluble BaAl120I94.075Insoluble BaAl2044.080Insoluble

~-BaB2043.854(Mohs)(0001)-iSlightlysoluble BaBe(P04)F4.31NoneInsoluble BaGe409NoneInsoluble BaMg2(V04h4.226 BaMo044.946 BaSb206 BaSnB20 64.848Insoluble BaSnSi30 94.036(Mohs)NoneInsoluble BaTiB20 64.211Insoluble BaTi036.025(Mohs)Insoluble BaTiSi3093.646(Mohs)NoneInsoluble BaW046.383Insoluble BaZnGe045.12Insoluble BaZnSi044.706Insoluble BaZrSi3093.85NoneInsoluble Be2Ge043.893NoneInsoluble Be2Si042.961100(1010)Insoluble Be3Al2Si601s2.667.5-8(Mohs)NoneInsoluble Be3Sc2Si601s2.776.5(Mohs)NoneInsoluble BeMg3Als0163.608.5(Mohs)Insoluble BeO(dreyerite)3.011250(1010)-i2X10-5(20) Bi2Ge30 96.205.5GPa(0001)-pInsoluble BiV04(dreyerite)6.25(110)-pInsoluble Ca2Al2Ge073.421(001)Insoluble Ca2Al2Si073.045.5(Mohs)(001)Insoluble Ca2Al306F2.95(1011)-iInsoluble Ca2B50 9Cl2.639Insoluble Ca2BeSi207Insoluble Ca2Ga2Ge074.14(001)Insoluble Ca2Ga2Si074.07(001)Insoluble Ca2MgSi2072.945.5(Mohs)(001)-iInsoluble Ca2Te2055.054(Mohs)(001)-pInsoluble Ca2ZnSi2073.393.5(Mohs)(001)Insoluble Ca3B20 63.09Insoluble

Physical Properties of Uniaxial Crystalline Materials-continued Uniaxial Density Hardness Cleavage Solubility (0 C) material 3 (glcm) 2 (kglmm) plane (g/100 g H20)

Ca3GazGe4014 4.590 None Insoluble Ca4La(P04)}0 Insoluble Ca4 Y 6(Si04)60 None Insoluble Ca5(As04)}Cl 3.635 Insoluble Ca5(As04)}F 3.5 4.5 (Mohs) (1011)-i Insoluble Cas(P04)}Cl 2.90 5 (Mohs) (0001)-i Insoluble Ca5(P04)}F 3.20 540 (0001)-i Insoluble Ca5(V04) 3F (1011)-i Insoluble Ca5(V04)}Cl 3.174 (1011)-i Insoluble CaA1120 19 3.78 Insoluble CaA12B20 7 2.44 CaCOrcalcite 2.715 75-135 (1011)-p 1.4 X 10-3 (25) CaCOrvaterite 2.68 3 (Mohs) Insoluble CaGd4(Si04)30 6.030 None Insoluble CaGdAl04 5.97 716 (001) Insoluble CaGe409 None Insoluble CaLa4(Si04)30 5.112 None Insoluble CaLaA104 (001) Insoluble CaLaB04 4.136 Insoluble CaMg(C03)z 2.86 3.5 (Mohs) (1011)-p Insoluble CaMg3(C03)4 3.71 335 (1011)-p Insoluble CaMo04 4.25 4.0 (Mohs) (112)(110) CaSnB20 6 4.22 5.5 (Mohs) (0001)-p Insoluble CaW04 6.062 4.5-5 (Mohs) (101)-i 6.4 X 10-4 (15) CaY 4(Si04)30 4.47 702 None Insoluble CaYA104 Insoluble CaZrBA190 18 4.01 8 (Mohs) None Insoluble Cd5(As04)}Cl 5.917 (1011)-i Insoluble Cd5(P04)3Cl 5.600 (1011)-i Insoluble Cd5(P04)3F 5.784 (1011)-i Insoluble Cd5(V04)3Cl 5.375 (1011)-i Insoluble CdC12 4.047 140 (25) CdC03 5.02 (1011)-p Insoluble

~ Cdi2 5.670 86 (25) CdS 4.82 122 (25) (1122)-i 1.3 X J0-4(18) CdSe 5.81 44--90 Insoluble CdSnB20 6 5.479 Insoluble CdTi03 5.881 Insoluble Cs2AgF4 5.02 Cs2CdC14 3.697 Cs2CdZnF6 5.342 Cs2KA13F 12 3.76 Cs2LiA13F12 3.949

Physical Properties of Uniaxial Crystalline Materials-continued Uniaxial Density Hardness Cleavage Solubility ("C) material 3 (glcm) 2 (kglmm) plane (g/100 g H20)

Cs2LiAlF6 4.38 Cs2LiGa3F12 4.43 Cs2LiGaF6 4.406 Cs2NaAl3F 12 3.817 Cs2NaAlF6 4.346 Cs2NaGaF6 4.654 Cs2SnGe309 5.145 Insoluble Cs2TiGe309 4.835 Insoluble CsAl(S04)z 3.382 CsHzAs04 3.747 1.5 (Mohs) (101)-p Very soluble CsH2P04 3.253 1.5 (Mohs) (101)-p Very soluble CsSc(Mo04)z 3.54 (1011)-p CsSc(W04)z 4.74 (1011)-p a-GaN 6.109 750 Insoluble GaP04 2.995 4 (Mohs) None Insoluble GaS 3.86 GaSe 5.03 GdAl3(B03)4 4.335 7 (Mohs) (1011) Insoluble GdB03 6.357 Insoluble GdGa3(B03)4 5.257 (lOll) Insoluble Gdln03 7.41 GdV04 5.474 (110)-p Insoluble Ge02 6.239 None Insoluble HfSi04 6.97 (110)-i Insoluble Hg2Br2 7.68 1.5 (Mohs) (110) Insoluble Hg2Cl2 7.15 1.5 (Mohs) (110)-i 3 X 10-4 Hgzlz 7.68 Insoluble Hgl2 6.28 0.0055 (35) HgS 8.10 2-2.5 (Mohs) (1010)-p 1 X 1Q-6 (18) In20 3 7.31 InB03 5.555 (1011)-p Insoluble K2BiNb50 1s 5.29 K2CaZr(Si03)4 3.10 5.5 (Mohs) None Insoluble K2GdNb50 15 5.147 Insoluble K2LaNbs015 4.921 Insoluble K2MgCl4 2.13 K2MgF4 2.839 (001)-p K2NaLi2Nb50 1s (001)-p Insoluble K2SnGe309 4.324 Insoluble K2SnSi309 3.46 Insoluble K2Sr(S04)z 3.20 2 (Mohs) (0001)-p Slightly soluble K2TiGe309 3.945 Insoluble K2TiSi309 3.239 Insoluble

Physical Properties of Uniaxial Crystalline Materials-continued Uniaxial Density Hardness Cleavage Solubility ("C) material 3 (g!cm) 2 (kglmm) plane (g/100 g H20)

K2YNb50 15 4.807 Insoluble K2ZnF4 3.378 (001)-p K3LiNb50 15 4.376 (001)-p Insoluble K3Sc(V04h 3.02 Slightly soluble KAl(Mo04h 3.42 (1011)-p KAl(S04h 2.481 KA1F4 3.009 KA1Ge04 3.617 Insoluble KA1Si206 2.47 5.5 (Mohs) None Insoluble KAlSi04 2.59 6 (Mohs) None Insoluble KD2P04 1.5 (Mohs) (101)-p Very soluble KGaGe04 4.261 Insoluble KGaSi04 3.691 Insoluble KH2P04 2.338 1.5 (Mohs) (101)-p 33 (25) Kin(W04h 5.13 (1011)-p KLa(Mo04h 4.61 KLiBeF4 2.284 KSc(Mo04h 3.23 (1011)-p KSc(W04h 4.64 (1011)-p KYF4 3.49 3 (Mohs) None Insoluble KZnF3 4.018 2.5 (Mohs) None Insoluble La2GeBe207 5.424 (001) Insoluble La2Mo06 5.834 (100)-p La202S 5.75 350-450 La20 3 6.574 La2W06 7.44 La3Ga5Ge014 None Insoluble La3Ga5Si014 5.754 None Insoluble La3Nb05Ga550 14 5.934 None Insoluble La3 Tao.5Ga5.50 14 6.164 None Insoluble LaA103 Insoluble LaBaGa30 7 5.60 (001) Insoluble LaBGe05 5.04 Insoluble LaBSi05 4.58 Insoluble LaCaA130 7 (001) Insoluble LaCaGa307 (001) Insoluble LaC13 3.85 LaF3 5.94 450 (0001) Insoluble LaMgA111019 4.285 Insoluble LaSrGa30 7 5.64 (001)-i Insoluble Li2B407 2.44 None Slightly soluble Li2CaGe04 3.63 Insoluble Li2CaSi04 2.935 Insoluble

Physical Properties of Uniaxial Crystalline Materials-continued Uniaxial Density Hardness Cleavage Solubility ("C) material 3 (glcm) 2 (kglmm) plane (g/100 g H20)

Li3In03 4.394 LiA1Ge04 3.338 None Insoluble y-LiA102 2.615 Insoluble LiAlSi04 2.66 6.5 (Mohs) (lOll) Insoluble LiCaAlF6 2.983 3.5 (Mohs) None 0.005 LiCaGaF6 3.517 None Very slightly soluble LiCainF6 None Very slightly soluble LiCdB03 4.53 LiCdinF6 None Very slightly soluble LiGaGe04 4.077 None Insoluble LiGaSi04 3.445 Insoluble LiGd(Mo04)z 5.273 LiGd(W04)z 7.19 LiGdF4 5.343 3.5 (Mohs) None Insoluble Lii03 4.487 3.5 (Mohs) 80 (18) LiLa(W04)z 6.57 LiLuF4 6.186 3.5 (Mohs) None Insoluble LiMgAlF6 3.14 Insoluble LiMgGaF6 3.772 Insoluble LiMginF6 4.267 LiNb03 4.644 5 (Mohs) (1011)-p Insoluble LiSrAlF6 3.45 3.0 (Mohs) None 0.05 LiSrGaF6 3.600 2.5 (Mohs) None 0.10 LiTa03 7.43 6 (Mohs) (lOll) Insoluble LiYF4 3.99 260-325 None Insoluble LiZninF6 None Very slightly soluble LiZnNb04 4.504 LuAl3(B03)4 4.569 7 (Mohs) (lOll) Insoluble LuB03 6.871 Insoluble LuP04 Insoluble LuV04 6.263 (110)-p Insoluble Mg2Al3(Si5Al)018 2.53 7 (Mohs) (1010)-i Insoluble MgC03 3.00 4 (Mohs) (1011)-p Insoluble MgF2 3.18 415 (010),(110) <2x10-4 MgTi03 4.03 5.5 (Mohs) (1011)-i Insoluble MnF2 4.478 0.66 (40) Na2Al2B207 2.62 Na2Ca2Si30 9 2.840 Insoluble Na2C03 2.27 Very soluble Na2Mg(C03)z 2.74 3.5 (Mohs) (0001)-i Na2TiOSi04 3.5 (Mohs) (001)-p Insoluble Na3Li2Nbs015 (001)-p Insoluble Na3YSi207 3.063 Insoluble

Physical Properties of Uniaxial Crystalline Materials-continued Uniaxial Density Hardness Cleavage Solubility ("C) material 3 (glcm) 2 (kg/mm) plane (g/100 g H20)

Na5Al3F1 4 3.00 3.5 (Mohs) (001)-p Na5GdGe4012 3.861 Insoluble Na5GdSi40 12 3.213 Insoluble NasinGe4012 3.831 Insoluble Na5InSi4012 3.134 Insoluble NasLuGe40 12 4.051 Insoluble Na5LuSi40 12 3.348 Insoluble Na5ScGe4012 3.476 Insoluble Na5ScSi40 12 2.743 Insoluble Na5 Y 4(Si04)4F 3.938 Na5YGe40 12 3.548 Insoluble Na5YSi40 12 2.863 Insoluble NaA1Si04 2.63 Insoluble NaBaP04 4.270 1.5 (Mohs) NaGd(W04h 7.184 NaGd02 6.162 Slightly soluble Nain02 5.711 Slightly soluble NaLa(Mo04h 4.773 NaLa02 4.949 Soluble NaN03 2.261 19.2(200) (1010)-p 92 (25) NaSbBe40 7 4.28 8 (Mohs) (0001)-i Insoluble NaSc02 3.515 Slightly soluble NaYF4 3.85 Insoluble NbCaAl04 5.56 Insoluble NdxYI-xAl3 (B03)4 8 (Mohs) NH4Al(Se04h 3.13 NH4Al(S04h 2.472 NH4Ga(Se04h 3.476 NH4Ga(S04h 2.854 NH4H2P04 1.803 1 (Mohs) (101)-p 36.8 (20) Pb2InNb06 8.567 Insoluble Pb2ZnSi207 (001) Insoluble Pb3Ca2(As04)3Cl 5.82 4.5 (Mohs) (1011)-i Insoluble Pb3Ge207 Insoluble Pb5(As04) 3F (1011)-i Insoluble Pb5(As04)JC1 7.28 3.5 (Mohs) (1011)-i Insoluble Pb5(P04))Cl 7.04 3.5 (Mohs) (1011)-i Insoluble Pb5(P04)JF 6.868 (1011)-i Insoluble Pbs(V04)JCl 6.88 3 (Mohs) None Insoluble Pb5(V04)JF 7.155 (1011)-i Insoluble PbAl,2019 4.731 Insoluble Pbi2 6.16 0.076 (25) PbMo04 6.92 2.5-3 (Mohs) (011) Insoluble

Physical Properties of Uniaxial Crystalline Materials-continued Uniaxial Density Hardness Cleavage Solubility ("C) material 3 (g!cm) 2 (kg!mm) plane (g/100 g H20)

PbO (litharge) 9.36 (110)-p 1.7 X 10-3 (20) PbTi03 Insoluble PbW04 8.23 2.5-3 (Mohs) (001)-i Insoluble Rb2LaNb5015 5.35 Insoluble Rb2LiAlF6 3.878 Rb2LiGaF6 4.258 Rb2MgC14 2.791 Rb2MgF4 3.972 (001)-p Rb2SnGe309 4.850 Insoluble Rb2SnSi309 4.103 Insoluble Rb2TiGe309 4.425 Insoluble Rb2TiSi30 9 3.626 Insoluble Rb2ZnF4 4.637 (001)-p Rb3Gd(V04)z 4.50 Slightly soluble Rb3Lu(V04)z 4.56 Slightly soluble Rb3NaBeF8 3.376 Rb3Sc(V04)z 3.83 Slightly soluble Rb3Y(V04)z 3.76 Slightly soluble RbAl(Se04)z 3.725 RbAl(S04)z 3.126 RbAlF4 3.792 RbAlSi20 6 2.893 Insoluble RbCdF3 4.836 RbGa(Se04)z 4.088 RbGa(S04)z 3.504 RbH2As04 1.5 (Mohs) (101)-p Very soluble RbH2P04 1.5 (Mohs) (101)-p Very soluble Rbin(Mo04)z 3.88 (1011)-p Rbin(W04)z 5.19 (1011)-p RbSc(Mo04)z 3.41 (1011)-p RbSc(W04)z 4.68 (1011)-p ScB03 3.45 5 (Moh) (1011)-p Insoluble ScP04 Insoluble ScV04 Se 4.81 2.6 (Moh) (0112)-i Insoluble Se02 4.16 a-SiC 3.219 3720 None Insoluble Si3N4 3.24 3400 None Insoluble Si02 2.65 741(500) None Insoluble Sn02 6.95 6.5 (Mohs) (100)-i Insoluble Sr2Al2Si07 (001) Insoluble Sr2B50 9Cl 3.250 Insoluble Sr2Ga2Si07 (001) Insoluble

PhysicalPropertiesofUniaxialCrystallineMaterials-continued UniaxialDensityHardnessCleavageSolubility("C) material3(g/cm)2(kg/mm)plane(g/100gH20)

Sr2MgGe2074.266(001)Insoluble Sr2MgSi207(001)Insoluble Sr2ZnGe207(001)Insoluble Sr2ZnSi2074.027(001)Insoluble Sr3(V04)z4.464 Sr3B20 64.257Insoluble Sr3Ga2Ge40145.087NoneInsoluble Sr3Ti20 75.04Insoluble Sr5(As04)3F4.538(1011)-iInsoluble Sr5(As04)JC14.525Insoluble Srs(P04))Cl4.095Insoluble Sr5(P04)JF4.14380(0001)-iInsoluble Sr5(V04)3F4.13(1011)-iInsoluble Sr5(V04hCl4.122(1011)-iInsoluble Sr5Nb40 155.46 Sr5Ta40 157.321Insoluble SrA1120 193.985Insoluble SrAlF53.86Insoluble (Sr0 .6Bao.4)Nb20 65.45.5(Mohs)Insoluble SrGaF54.40Insoluble SrGdA1046.602(001)-pInsoluble SrGdGa3075.64Insoluble SrLa4(Si04hONoneInsoluble SrLaAJ045.826(001)-pInsoluble SrLaB044.802Insoluble SrLaGa045.372(001)-pInsoluble SrMg2(V04)z3.827 SrMo044.701 SrSnB206Insoluble SrTiB20 6Insoluble SrW046.354Insoluble SrY4(Si04)30NoneInsoluble SrZrB20 6Insoluble Ta20 58.2Insoluble TaB048.027.5(Mohs)(I10)(010)Insoluble Te6.2518NoneInsoluble ThSi046.74.5(Mohs)NoneInsoluble Ti024.26879(500)(I10)-i0.001 Tl2SnGe3096.617Insoluble T12TiGe30 96.256Insoluble Tl3AsS37.18Insoluble TJ3AsSe37.834Insoluble TIAI(Se04)z4.894

Physical Properties of Uniaxial Crystalline Materials-continued Uniaxial Density Hardness Cleavage Solubility ("C) material 3 (glcm) 2 (kglmm) plane (g/100 g H20)

TlAl(S04)z 4.337 TlAlF4 6.131 T1Ga(Se04)z 5.163 TlGa(S04)z 4.719 Y2BeAl207 (001) Insoluble Y2GeBe207 4.810 (001) Insoluble Y2SiBe207 4.423 (001) Insoluble YAl3(B03)4 3.724 1890 (lOll) Insoluble YAs04 4.85 4.5 (Mohs) Insoluble YB03 Insoluble YCaAl307 (001) Insoluble YGa3(B03)4 4.684 (1011) Insoluble Yin03 6.032 YP04 4.31 4.5 (Mohs) (110)-p Insoluble YV04 4.23 480 (110)-p Insoluble Zn2Ge04 4.781 Insoluble Zn2Si04 4.25 5.5 (Mohs) (0001)-i Insoluble ZnC03 4.43 4 (Mohs) (1011)-p Insoluble ZnC12 2.907 408 (25) ZnF2 4.95 1.62 (20) ZnGeP2 Insoluble ZnO 5.606 4 (Mohs) (1010)-p 1.6 X lQ-4 (20) ZnSb206 6.64 6.5 (Mohs) ZnSiP2 Insoluble ZnS (wurtzite) 3.98 3.5 (Mohs) (1120)-i Insoluble Zr02 5.861 Insoluble ZrSi04 4.56 1000 (110)-i Insoluble

1.2.3 Biaxial Crystals

Physical Properties of Biaxial Crystalline Materials Biaxial Density Hardness Cleavage Solubility ("C)

material 3 (glcm) 2 (kglmm) plane (g/100 g H20)

Alz(Mo04h 3.495 Insoluble Alz(W04h 5.079 (010)-p Insoluble Al2Ge20 7 4.06 Insoluble Al2Si04F2 3.57 8 (Mohs) (001)-p Insoluble Al2Si05-andalusite 3.13 6.5 (Mohs) (110) Insoluble AlzSi05-kyanite 3.6 4--7.5 (Mohs) (100)-p Insoluble Al2Si05-sillimanite 3.25 6.5 (Mohs) (010)-p Insoluble Al4B209 2.904 Al6Ge20 13 3.662 Insoluble Al6Si20 13 3.19 1750 (010)-i Insoluble A1Hffa06 8.33 Insoluble A1Nb 11 0 29 4.46 Insoluble AlNb04 4.673 Insoluble A1Ta04 6.86 Insoluble As2S3 3.49 1.5 (Mohs) (010)-p Insoluble AsS 3.56 1.5 (Mohs) (010)-i Insoluble AsSbS3 3.92 1.5 (Mohs) (001)-p Insoluble Ba2CaMgAlzF 14 4.204 3.5 (Mohs) (001)-p Ba2CdMgA12F 14 4.735 Ba2LiNb50 15 Insoluble Ba2NaNbs01s 5.41 Insoluble Ba2Zn3F 10 5.26 Ba2ZnA1F9 4.909 Ba2ZnGaF9 5.169 Ba3Al2F12 4.37 Ba3 TiA1100 20 4.13 BaA12B20 7 3.559 BaA12Ge20 8 Insoluble BaA12Si20 8 3.96 6-6.5 (Mohs) (001)-p Insoluble BaBe2Si20 7 4.00 7 (Mohs) (00 1 )(I 00)-p Insoluble BaCazMg(Si04)z 3.974 Insoluble BaCa2Si30 9 3.73 3.5 (Mohs) (0 11 )(0 10)-p Insoluble BaCdAlF7 5.04 BaCdGaF7 5.406 BaC03 4.31 3.5 (Mohs) (010)-i Very slightly soluble BaGaF5 5.104 BaGe20 5 5.85 Insoluble BaGeAl6012 4.031 BaGeGa60l2 5.201

Physical Properties of Biaxial Crystalline Materials-continued Biaxial Density Hardness Cleavage Solubility ("C)

material 3 (glcm) 2 (kglmm) plane (g/100 g H20)

BaGe03 5.072 Insoluble BaMgF4 4.538 BaNb20 6 Insoluble BaS04 4.50 3 (Mohs) (001)-p Insoluble BaTa20 6 7.824 Insoluble BaTi409 4.52 Insoluble BaTiA160 12 3.791 BaTiGa60 12 4.981 BaY2F8 5.047 250-350 BaY20 4 5.806 BaZnF4 5.178

~-BaSi205 3.77 5 (Mohs) (001) Insoluble ~-CazSi04 3.31 6 (Mohs) (100)-i Insoluble Be2B03F 2.37 7.5 (Mohs) (010)-p Insoluble BeA120 4 3.75 1600-2300 (V) None Insoluble BeA160 10 3.75

~-Gaz03 5.95 (010)-p Insoluble Bi2Al40 9 6.229 Bi2Ge05 Insoluble Bi2Mo20 9 6.518 Insoluble Bi2Mo30 12 6.196 (100)-p Insoluble Bi20 3 9.37 Very slightly soluble Bi2Si05 Insoluble Bi2W06 7.35 3.5 (Mohs) Bi3TiNb09 Insoluble Bi4B20 9 8.185 Bi4Ti3012 8.045 313 Insoluble y-Bi2Mo06 7.068 BiB306 5.03 5-5.5 (Mohs) Insoluble BiNb04 Insoluble BiSb04 8.48 Insoluble BiTa04 8.958 Insoluble BiV04-clinobisvanite 6.95 BiV04-pucherite 6.63 4 (Mohs) (001)-p Ca(I03)z 4.48 3.5 (Mohs) (011)-i Ca2(As04)Cl (010)-p Ca2(P04)Cl (010)-p Ca2(P04)F (010)-p Insoluble Ca2(V04)Cl 3.075 (010)-p Ca2Al20 5 3.73 Ca2B60 11 2.85 Ca2B03Cl 2.766

Physical Properties of Biaxial Crystalline Materials-continued Biaxial Density Hardness Cleavage Solubility ("C)

material 3 (g/cm) 2 (kg!mm) plane (g/100 g H20)

Ca2Nb20 7 Insoluble Ca2Sb20 7 5.204 Insoluble Ca2V20 7 3.36 5.5 (Mohs) (110)-p Ca3(V04)2 3.16 (110)(001)-p Ca3Al20 6 3.017 Ca3Ga409 4.208 Ca3MgSi20 8 3.31 6 (Mohs) None Insoluble Ca3Si207 2.96 5.5 (Mohs) Insoluble Ca5Al60 14 3.03 (001)-p Ca5Ga60 14 4.18 5 (Mohs) CaA12F8 2.89 4.5 (Mohs) (111)-p Insoluble CaA120 4 2.942 CaA12Si20 8 2.76 6-6.5 (Mohs) (001)-p Insoluble CaAl407 2.894 8.5 (Mohs) CaAlB30 7 3.44 7.5 (Mohs) None Insoluble CaAlB04 2.60 CaB204 2.702 CaB2Si20 8 3.00 7 (Mohs) None Insoluble CaB30 5F 2.729 Insoluble CaB40 7 2.69 CaBa(C03h 3.67 4 (Mohs) (110)-i Very slightly soluble CaBe(P04)F 2.95 5 (Mohs) (11 0)-i Insoluble CaBe2(P04)2 2.89 6 (Mohs) None Insoluble CaCOraragonite 2.93 3.5-4 (Mohs) (010)-i Very slightly soluble CaGa204 4.333 CaGe20s 4.868 Insoluble Caln20 4 6.15 CaMg(P04)F Insoluble CaMgAs04F 3.77 5 (Mohs) (101)-i Very slightly soluble CaMgB20 5 3.02 4.5 (Mohs) (010)-p Very slightly soluble CaMgGe20 6 4.265 Insoluble CaMgSi20 6 3.26 6.5 (Mohs) (110)-i Insoluble CaMgSi04 3.06 5.5 (Mohs) (0 10)-i Insoluble CaNb20 6 4.78 5.5 (Mohs) None Insoluble CaSc20 4 3.897 Insoluble CaSi03 2.9 5 (Mohs) (100)-p Insoluble CaSn03 5.759 Insoluble CaSnSi05 4.56 4 (Mohs) Insoluble CaS04 2.96 3.5 (Mohs) (010)(100) Very slightly soluble CaTa206 Insoluble CaTi03 4.04 Insoluble CaTiSi05 3.53 5.5 (Mohs) (11 0)-i Insoluble CaV20 6 3.59 (1 00)(00 1 )-p

Physical Properties of Biaxial Crystalline Materials-continued Biaxial Density Hardness Cleavage Solubility ("C)

material 3 (glcm) 2 (kg/mm) plane (g/100 g H20)

CaYB04 3.783 CaZnGe206 4.807 Insoluble CaZnSi04 4.25 5 (Mohs) (010)(100) Insoluble CaZrSi20 7 3.63 Insoluble CaZrTi20 7 4.407 Insoluble Cd2B205 5.24 Cd2Ge04 6.313 Insoluble CdB40 7 3.51 CdW04 8.005 Cs2BeF4 4.128 Cs2CdBr4 4.069 Cs2Hgl4 4.357 Cs2MgC14 2.952 Cs2ZnBr4 4.034 Cs2ZnCl4 3.357 CsB30 5 3.39 Soluble CsGd(Mo04h (1 00)-p CsLiBeF4 3.411 CsLiS04 3.455 Very soluble CsNbB206 (001)-p Insoluble CsLiS04 3.455 Very soluble CsNbB20 6 (001)-p Insoluble CsTiOAs04 4.511 None Insoluble CsZnAlF6 4.04 Gaz(W04h (010)-p GazGeOs 4.97 Insoluble GaNb04 5.01 Insoluble Gd(B02)3 4.84 Gdz(Mo04h 4.65 Gd2(W04)3 7.475 Gd2GeOs Insoluble Gd2Mo06 7.068 Gd20 2S04 6.483 Gd20 3 8.33 Gd2Si05 6.77 6 (Mohs) (100)-p Insoluble Gd2Sr3(B03)4 5.266 Gd2W06 8.339 Gd3Nb07 7.459 Insoluble Gd3Ta07 8.414 Insoluble Gd4Al209 6.467 a-Ga4Ge0s 5.65 Insoluble GdA1Ge20 7 Insoluble GdAl03 7.437 Insoluble

Physical Properties of Biaxial Crystalline Materials-continued Biaxial Density Hardness Cleavage Solubility ("C)

material 3 (glcm) 2 (kglmm) plane (g/100 g H20)

GdGaGe207 6.08 Insoluble GdMgB50 10 4.309 GdNb04 Insoluble GdP50 14 3.55 Insoluble GdP04 5.986 470 Insoluble GdSc03 6.642 Insoluble HfD2 10.11 Insoluble HgCl2 5.490 HgO 11.14 1.5-2.0 (Mohs) (010)-p HI03 4.637 In2(Mo04)3 3.92 In2(W04h 5.619 (010)-p InCaB04 4.536 InGa03 6.447 InNb04 6.27 (010)-p Insoluble InP04 4.830 Insoluble InTa04 8.296 (0 1 0)-p Insoluble InV04 4.50 Insoluble K2CaSi04 2.865 Insoluble K3Gd(V04h 3.15 Slightly soluble K3La(P04h 5.293 Insoluble K3Lu(V04h 3.15 Slightly soluble K3Y(V04h 3.15 Slightly soluble KAISi30s 2.57 6 (Mohs) (001)-p Insoluble KAl3Si30IO(OHh 2.78 Insoluble KBF4 2.51 Slightly soluble KB50 8•4H20 1.740 2.5 (Mohs) (010)-p KGaSi30 8 2.887 Insoluble Kin(Mo04h 4.17 KLaP40 12 Insoluble KLu(W04h 7.759 KNbB206 3.151 (001)-p Insoluble KNb03 4.617 Insoluble KN03 2.11 2 (Mohs) (011)-p Soluble KPb2Cl5 4.78 2.5 (Mohs) Insoluble KTaB20 6 4.262 (001)-p Insoluble KTa03 5.996? Insoluble KTi3Nb09 3.88 Insoluble KTiNb05 3.82 Insoluble KTiOAs04 3.454 None Insoluble KTiOP04 3.024 702 None Insoluble KV03 2.879 (010)-p KY(Mo04h 5.40

Physical Properties of Biaxial Crystalline Materials-continued Biaxial Density Hardness Cleavage Solubility ("C)

material 3 (g/cm) 2 (kglmm) plane (g/100 g H20)

KY(W04)2 6.56 LaB30 6 4.216 (010)-p La2(W04h 6.626 La2Ba3(B03)4 5.353 La2Be20 5 6.061 900(100) (010)-i Insoluble La2Ca3(B03)4 4.157 La202S04 5.467 La2Si05 Insoluble La2Sr3(B03)4 4.783 La2Ti207 5.782 648 (010)-p Insoluble La2Ti05 5.5 Insoluble La3Nb07 6.25 Insoluble La3Sb07 6.558 Insoluble La3Ta07 7.139 Insoluble LaA1Ge20 7 5.18 Insoluble LaBMo06 5.293 LaB03 5.304 LaBW06 6.185 LaGaGe207 Insoluble LaGa03 7.21 Insoluble Lain03 LaMgB50w 3.923 LaNb50 15 6.264 Insoluble LaNb04 5.914 Insoluble LaP50 14 3.290 Insoluble LaP04 5.067 5.5 (Mohs) (100)-i Insoluble LaSb04 6.30 Insoluble LaSc03 5.79 Insoluble LaV04 Insoluble LaY(W04h 6.53 Li2BeSi04 2.69 7 (Mohs) (01 0)-i Insoluble Li2C03 2.097 Slightly soluble Li2Ge03 3.489 Insoluble Li2MgGe04 3.31 Insoluble Li2Si03 2.527 Insoluble Li3La2(B03h 4.50 Li3P04 2.48 4 (Mohs) (010)-p Insoluble Li3V04 2.645 Insoluble Li3Y2(B03h 3.50 Li5Al04 2.251 Li6Al2(B03)4 2.58 Li6Lu(B03)3 3.538 Li6Y(B03h 2.76

Physical Properties of Biaxial Crystalline Materials-continued Biaxial Density Hardness Cleavage Solubility (0 C)

material 3 (glcm) 2 (kglmm) plane (g/100 g H20)

LiAl(Mo04)2 3.95 LiAl(P04)F 3.10 5.5 (Mohs) (100)(110)-p Insoluble LiA1Ge20 6 4.354 Insoluble LiAlSi206 3.1 7 (Mohs) (010)-p Insoluble LiAlSi4010 2.40 6.5 (Mohs) (001)-p Insoluble LiBaAlF6 4.114 LiBaGaF6 4.526 LiB02 2.883 LiB30 5 2.474 7 (Mohs) None Insoluble LiGa(W04)z 7.44 LiGaGe20 6 4.783 Insoluble LiGa02 4.175 Insoluble LiGaSi20 6 Insoluble LiGd02 6.246 LiGdP4012 Insoluble Liln(Mo04)z 4.149 Liln(W04)z 7.47 LilnGe20 6 5.041 Insoluble LilnSi20 6 4.071 Insoluble LilnSi04 4.160 Insoluble LiLa(Mo04)2 4.551 LiLa02 6.18 Soluble LiLaP40 12 Insoluble LiLu(W04)z 8.02 LiLuGe04 5.98 Insoluble LiLuP40 12 Insoluble LiLuSi04 5.46 Insoluble LiSc(W04) 2 6.716 LiScGe20 6 4.157 Insoluble LiScGe04 3.928 Insoluble LiScSi20 6 3.090 Insoluble LiScSi04 3.183 Insoluble LiV03 2.971 (100)-p Insoluble LiY(W04)z 6.83 LiYGe04 4.365 Insoluble LiY02 6.258 LiYSi04 3.746 Insoluble LiZnB03 3.64 Lu2Mo06 8.167 Lu202S04 7.854 Lu2Si05 5.892 6.5 (Mohs) None Insoluble Lu2W06 9.718 LuCaB04 6.036

Physical Properties of Biaxial Crystalline Materials-continued Biaxial Density Hardness Cleavage Solubility ("C)

material 3 (glcm) 2 (kglmm) plane (g/100 g H20)

LuP50 14 3.72 Insoluble LuTa04 9.761 Insoluble Mg2(P04)F 3.15 5 (Mohs) (100)-i Insoluble MgzBzOs 2.910 5.5 (Mohs) (hkO)-p Insoluble Mg2B03F 2.784 Insoluble Mg2Ge04 4.028 Insoluble Mg2Si04 3.22 7 (Mohs) (010)-i Insoluble Mg3(P04)z 2.76 (100)(010) Insoluble Mg3B206 3.04 6.5 (Mohs) (110)-p Insoluble Mg3B7013Cl 2.95 7 (Mohs) None Slightly soluble Mg3TiB20 8 3.35 3.5 (Mohs) (100)-p Insoluble Mg4Al8Si20 20 3.489 7.5 (Mohs) (010)(001)-i Insoluble Mg4GagGe202o Insoluble Mg5(B03)3F 3.112 Insoluble MgAl3BSiOg 2.98 7.5 (Mohs) (100)-p Insoluble MgAIB04 3.45 7 (Mohs) None Insoluble MgGaB04 4.285 Insoluble MgGe03 4.282 Insoluble MgMo04 3.809 MgSi03 3.21 5-6 (Mohs) (11 0)-i Insoluble MgTi(S04)3 2.82 MgTi20s 3.649 Insoluble MgW04 6.893 Na(Sr,Ba)P04 2.919 Insoluble Na2BaTi2Si4014 3.43 6 (Mohs) (1 00)-i Insoluble Na2BeF4 2.482 Na2BeSi206 2.70 6 (Mohs) (100)-i Insoluble Na2Ca(P04)F 2.88 Insoluble Na2CaMg(P04)z 3.10 4.5 (Mohs) Insoluble Na2Ge03 3.319 Insoluble Na2KTiNbSi40 14 2.968 6.5 (Mohs) Insoluble Na2LiAlF6 2.98 (001)-p Slightly soluble Na2LiYSi60Js 2.76 Insoluble Na2MgAlF7 2.97 3.5 (Mohs) (110)-i Slightly soluble Na2MgGaF7 3.359 Na2MglnF7 3.627 Na2MgScF7 2.853 Na2MgSi04 2.75 Insoluble Na2Si20 5 (100)-p Slightly soluble Na2Si03 2.64 Insoluble Na2 Ti2Si209 3.44 6 (Mohs) (01 0)-i Insoluble Na2ZnCl4 2.382 Na3AlF6 2.90 2.5 (Mohs) (001)-p Slightly soluble

Physical Properties of Biaxial Crystalline Materials-continued Biaxial Density Hardness Cleavage Solubility ("C)

material 3 (glcm) 2 (kglmm) plane (g/100 g H20)

Na3GdSi309 3.439 Insoluble Na3La(B03)2 3.49 Na3La2(B03)J 4.19 Na3ScSi207 2.861 Insoluble Na3YSi30g 2.962 Insoluble NaAl(As04)F 3.64 5 (Mohs) (110)-i Slightly soluble NaAl(P04)F 3.126 4.5 (Mohs) (111)-i Insoluble NaA1Ge04 3.337 (010)-p Insoluble NaA1Si30 8 2.63 6--6.5 (Mohs) (001)-p Insoluble NaBeP04 2.81 5.5 (Mohs) (010)-p Insoluble NaBF4 2.53 3 (Mohs) (100)(010) Soluble NaCaP04 3.117 3 (Mohs) NaCdP04 4.10 NaGaGe20 6 4.864 Insoluble NaGaGe04 4.028 (010)-p Insoluble NaGaSi04 3.336 (010)-p Insoluble NaGdGe04 5.366 Insoluble NaGdP20 7 4.287 Insoluble NaGdP4012 3.45 Insoluble NaGdSi04 Insoluble Naln(Mo04)2 4.02 NaLaP20 7 3.803 Insoluble NaLaP40 12 3.4 Insoluble NaLiV20 6 2.962 NaLuGe04 6.025 Insoluble NaLuP20 7 4.114 Insoluble NaLuSi04 5.435 Insoluble NaMgF3 3.06 NaNb03 4.57 5.5 (Mohs) Insoluble NaScGe04 3.39 Insoluble NaScSi20 6 3.22 Insoluble NaSr3Al3F 16 3.51 4 (Mohs) None Slightly soluble NaTa03 7.123 Insoluble NaV03 2.91 (110)-p 0.8 NaYGe04 4.302 Insoluble NaY02 4.382 Slightly soluble NaYSi04 4.083 Insoluble NaZnF3 4.105 NH4B50 8•4H20 1.57 2.5 (Mohs) (100)-p Pb2KNb50 15 6.143 (001) Insoluble Pb2NaNb50 15 Insoluble Pb2V207 6.46 3 (Mohs) Pb3(P04h 7.456

stallineMaterials59

PhysicalPropertiesofBiaxialCrystallineMaterials-continued BiaxialDensityHardnessCleavageSolubility(0 C)

material3(g!cm)2(kg/mm)plane(g/100gH20)

Pb3(V04h7.44 Pb3Ge05Insoluble Pb3MgNb209Insoluble Pb3ZnNb20 9Insoluble PbBi2Nb2096.684Insoluble PbBr26.693(001)-p PbCl25.8531(001)-p0.99(20) PbC036.553(Mohs)(110)(021)-iVeryslightlysoluble PbGe036.968Insoluble PbO(massicot)9.642(100)-p PbNb20 6Insoluble PbSe037.123.5(Mohs)(001)-p PbSe047.083.5(Mohs)None PbSi036.324.5(Mohs)(010)-pInsoluble PbS046.323.5(Mohs)(001)(210)Insoluble PbTa20 67.65Insoluble PbTiP20sInsoluble PbZnSi046.133(Mohs)(120)-iInsoluble RbAlSi04Insoluble RbB 50 8•4H201.9462.5(Mohs) Rb2BeF43.749 RbBi(Mo04h5.52 RbGd2Br74.79Slightlysoluble RbLa(W04h6.88 RbNbB2063.584(001)-pInsoluble RbTaB20 64.65(001)-pInsoluble RbTiOAs044.018NoneInsoluble RbTiOP043.647NoneInsoluble Sb2035.832.5-3(Mohs)(110)-pInsoluble SbNb045.685.5(Mohs)(010)-iInsoluble SbTa047.535-5.5(Mohs)(010)-iInsoluble Sc(P03)32.736Insoluble Sc2(Mo04)J3.102 Scz(W04h4.566(010)-pSlightlysoluble Sc2Si20 7Insoluble (Sc,YhSiz073.396.5(Mohs)(110)-iInsoluble Sc2Si053.49Insoluble Sc2Ti053.611Insoluble ScA!Be04NoneInsoluble ScCaB043.319 ScGa035.10(010)-pInsoluble ScGe2055.286Insoluble ScMgB043.287

Physical Properties of Biaxial Crystalline Materials-continued Biaxial Density Hardness Cleavage Solubility (0 C)

material 3 (g!cm) 2 (kg/mm) plane (g/100 g H20)

ScNb04 4.843 (010)-p Insoluble ScTa04 6.90 (010)-p Insoluble Sr2(As04)Cl (010)-p Sr2(V04)Br 4.342 Srz(V04)Cl 3.883 (010)-p Sr2KNb50 15 Insoluble Sr2KTa50 15 Insoluble Sr2NaNb50 15 5.19 Insoluble Sr2Nb20 7 5.204 Insoluble Sr2Ta20 7 7.074 Insoluble SrA12Ge20 8 3.714 Insoluble SrA120 4 3.554 SrA12Si20 8 3.13 Insoluble SrAl407 3.266 SrB20 4 3.350 SrC03 3.79 3.5 (Mohs) (010)-i Very slightly soluble SrGa20 4 4.85 SrGa2Si20 8 3.797 Insoluble SrGd20 4 7.287 Insoluble Srin20 4 6.854 SrLu20 4 8.496 Insoluble SrNb206 Insoluble SrSc20 4 Insoluble SrSi03 3.66 Insoluble SrS04 3.97 3 (Mohs) (001)-p Insoluble SrTa20 6 Insoluble SrY20 4 5.344 SrZnGe20 6 Insoluble Te02 6.00 2 (Mohs) (010)-p Very slightly soluble TINbB20 6 (001)-p Insoluble TITaB20 6 (001)-p Insoluble VzOs 3.37 Yz(Mo04h 3.3 Very soluble Yz(W04h (010)-p Very soluble Y2Be04 4.582 Insoluble Y2GdSb07 6.443 Insoluble Y2GdTa07 7.102 Insoluble Y2Ge05 Insoluble Y2MgBe2Si20 10 4.152 6.5 (Mohs) None Insoluble Y2Mo06 5.366 Y20 2S04 4.813 Y2Si20 7 4.3 6 (Mohs) None Insoluble Y2Si05 4.543 6.5 (Mohs) None Insoluble

Physical Properties of Biaxial Crystalline Materials-continued Biaxial Density Hardness Cleavage Solubility ("C)

material 3 (g/cm) 2 (kg/mm) plane (g/100 g H20)

Y2Ti2Si09 Insoluble Y2W06 6.818 Y3Sb07 5.699 Insoluble Y3Ta07 6.413 Insoluble Y4Al20 9 4.518 Insoluble YAl03 5.35 1030-1450 (11 0)-p Insoluble YCa40(B03)3 6-6.5 (Mohs) None Insoluble YCaGaBe2Si20w 4.107 6.5 (Mohs) None Insoluble YF3 5.056 YGd2Nb20 9 6.802 Insoluble YHITa06 8.13 Insoluble YNb04 5.58 Insoluble YP50 14 Insoluble YSc03 4.94 Insoluble YTa04 7.579 Insoluble YTiTa06 6.51 Insoluble Zn3(As03h 4.27 5 (Mohs) (110)-i Insoluble Zn3(B03h 4.12 ZnB40 7 3.07 ZnW04 7.87 Zr02 5.82 6.5 (Mohs) (001)-p Insoluble