 |
X-Ray Diffraction Table |
|
|
X-Ray Diffraction Table |
See Help on X-Ray Diffraction.
Powder X-ray Diffraction (XRD) is one of the primary techniques used by mineralogists and solid state chemists to examine the physico-chemical make-up of unknown materials. This data is represented in a collection of single-phase X-ray powder diffraction patterns for the three most intense D values in the form of tables of interplanar spacings (D), relative intensities (I/Io), mineral name and chemical formulae
The XRD technique takes a sample of the material and places a powdered sample in a holder, then the sample is illuminated with x-rays of a fixed wave-length and the intensity of the reflected radiation is recorded using a goniometer. This data is then analyzed for the reflection angle to calculate the inter-atomic spacing (D value in Angstrom units - 10-8 cm). The intensity(I) is measured to discriminate (using I ratios) the various D spacings and the results are compared to this table to identify possible matches. Note: 2 theta (Θ) angle calculated from the Bragg Equation, 2 Θ = 2(arcsin(n λ/(2d)) where n=1
For more information about this technique, see X-Ray Analysis of a Solid or take an internet course at Birkbeck College On-line Courses. Many thanks to Frederic Biret for these data.
[ 1 ]
| D1 Å (2θ) |
I1 %) |
D2 Å (2θ) |
I2 (%) |
D3 Å (2θ) |
I3 (%) |
Mineral | Formula |
| 19.300(4.57) | 200 | 11.160(7.92) | 160 | 6.420(13.78) | 120 | Ettringite | Ca6Al2(SO4)3(OH)12·26(H2O) |
| 19.312(4.57) | 200 | 11.184(7.90) | 80 | 3.884(22.88) | 40 | Bentorite | Ca6(Cr,Al)2(SO4)3(OH)12·26(H2O) |
| 19.320(4.57) | 200 | 9.700(9.11) | 100 | 11.180(7.90) | 70 | Zellerite | Ca(UO2)(CO3)2·5(H2O) |
| 19.340(4.57) | 200 | 7.780(11.36) | 140 | 11.160(7.92) | 140 | Sturmanite | Ca6(Fe+++,Al,Mn++)2(SO4)2[B(OH)4](OH)12·25(H2O) |
| 19.340(4.57) | 200 | 11.160(7.92) | 140 | 7.780(11.36) | 140 | Charlesite | Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12·26(H2O) |
| 19.360(4.56) | 200 | 9.620(9.19) | 130 | 10.160(8.70) | 130 | Bermanite | Mn++Mn+++2(PO4)2(OH)2·4(H2O) |
| 19.360(4.56) | 200 | 5.112(17.33) | 180 | 5.586(15.85) | 140 | Coombsite | K(Mn++,Fe++,Mg)13(Si,Al)18O42(OH)14 |
| 19.360(4.56) | 200 | 9.600(9.20) | 160 | 4.780(18.55) | 80 | Todorokite | (Na,Ca,K)2(Mn++++,Mn+++)6O12·3-4.5(H2O) |
| 19.380(4.56) | 200 | 9.720(9.09) | 180 | 6.940(12.74) | 160 | Sabugalite | HAl(UO2)4(PO4)4·16(H2O) |
| 19.380(4.56) | 200 | 9.720(9.09) | 180 | 12.920(6.84) | 180 | Sigloite | Fe+++Al2(PO4)2(OH)3·5(H2O) |
| 19.400(4.55) | 200 | 6.440(13.74) | 160 | 5.110(17.34) | 140 | Chukhrovite-(Nd) | Ca3(Nd,Y)Al2(SO4)F13·12(H2O) |
| 19.400(4.55) | 200 | 9.668(9.14) | 160 | 5.112(17.33) | 140 | Leisingite | Cu(Mg,Cu,Fe,Zn)2Te++++++O6·6(H2O) |
| 19.440(4.54) | 200 | 13.340(6.62) | 160 | 14.840(5.95) | 140 | Lasalite | Na2Mg2(V10O28)·20H2O |
| 19.500(4.53) | 200 | 11.860(7.45) | 160 | 6.440(13.74) | 140 | Chukhrovite-(Ce) | Ca3(Ce,Y)Al2(SO4)F13·10(H2O) |
| 19.500(4.53) | 200 | 7.206(12.27) | 200 | 7.632(11.59) | 180 | Amstallite | CaAl(Si,Al)4O8(OH)4·((H2O),Cl) |
| 19.500(4.53) | 200 | 12.700(6.95) | 60 | 18.480(4.78) | 40 | Mitryaevaite | Al5[(PO4)2[(P,S)O3(OH,O)]2F2(OH)2(H2O)8·6.48(H2O) |
| 19.500(4.53) | 200 | 6.416(13.79) | 180 | 6.094(14.52) | 100 | Tooeleite | Fe+++6(AsO3)4(SO4)(OH)4·4H2O |
| 19.540(4.52) | 200 | 6.220(14.23) | 140 | 9.740(9.07) | 100 | Lavendulan | NaCaCu5(AsO4)4Cl·5(H2O) |
| 19.556(4.51) | 200 | 6.500(13.61) | 120 | 6.852(12.91) | 120 | Schieffelinite | Pb(Te++++++,S)O4·(H2O) |
| 19.560(4.51) | 200 | 6.340(13.96) | 160 | 5.660(15.64) | 140 | Gordonite | MgAl2(PO4)2(OH)2·8(H2O) |
| 19.600(4.50) | 200 | 13.800(6.40) | 160 | 5.580(15.87) | 140 | Earlshannonite | (Mn,Fe++)Fe+++2(PO4)2(OH)2·4(H2O) |
| 19.620(4.50) | 200 | 9.810(9.01) | 86 | 6.436(13.75) | 38 | Sengierite | Cu2(UO2)2V2O8·6(H2O) |
| 19.650(4.49) | 200 | 5.894(15.02) | 120 | 11.774(7.50) | 100 | Braithwaiteite | NaCu5(Ti,Sb)2O2(AsO4)4[AsO3(OH)]2·8H2O |
| 19.660(4.49) | 200 | 6.600(13.40) | 130 | 9.920(8.91) | 80 | Koktaite | (NH4)2Ca(SO4)2·(H2O) |
| 19.660(4.49) | 200 | 6.264(14.13) | 180 | 9.850(8.97) | 120 | Zdenekite | NaPbCu++5(AsO4)4Cl·5(H2O) |
| 19.698(4.48) | 200 | 8.772(10.08) | 180 | 9.848(8.97) | 160 | Kunatite | CuFe+++2(PO4)2(OH)2·4H2O |
| 19.700(4.48) | 200 | 6.980(12.67) | 180 | 9.900(8.92) | 160 | Saleeite | Mg(UO2)2(PO4)2·10(H2O) |
| 19.720(4.48) | 200 | 6.400(13.83) | 160 | 13.140(6.72) | 160 | Ushkovite | MgFe+++2(PO4)2(OH)2·8(H2O) |
| 19.780(4.46) | 200 | 12.800(6.90) | 130 | 9.860(8.96) | 60 | Paravauxite | Fe++Al2(PO4)2(OH)2·8(H2O) |
| 19.800(4.46) | 200 | 5.328(16.62) | 160 | 6.252(14.15) | 120 | Ercitite | Na2(H2O)4[Mn+++2(OH)2(PO4)2] |
| 19.800(4.46) | 200 | 12.800(6.90) | 180 | 9.800(9.02) | 160 | Maghrebite | MgAl2(AsO4)2(OH)2·8H2O |
| 19.820(4.45) | 200 | 6.560(13.49) | 180 | 9.900(8.92) | 160 | Laueite | Mn++Fe+++2(PO4)2(OH)2·8(H2O) |
| 19.834(4.45) | 200 | 9.914(8.91) | 100 | 13.082(6.75) | 72 | Kastningite | (Mn++,Fe++,Mg)Al2(PO4 )2(OH)2·8(H2O) |
| 19.840(4.45) | 200 | 6.310(14.02) | 180 | 8.348(10.59) | 180 | Metavanuralite | Al(UO2)2(VO4)2(OH)·8(H2O) |
| 19.852(4.45) | 200 | 11.738(7.53) | 140 | 6.944(12.74) | 80 | Pseudolaueite | Mn++Fe+++2(PO4)2(OH)2·7-8(H2O) |
| 19.920(4.43) | 200 | 8.840(1-) | 80 | 12.740(6.93) | 80 | Matulaite | CaAl18(PO4)12(OH)20·28(H2O) |
| 19.960(4.42) | 200 | 5.980(14.80) | 80 | 7.860(11.25) | 80 | Stewartite | Mn++Fe+++2(PO4)2(OH)2·8(H2O) |
| 19.980(4.42) | 200 | 6.740(13.12) | 160 | 6.240(14.18) | 160 | Fluorophlogopite | KMg3(AlSi3)O10F2 |
| 19.996(4.42) | 200 | 6.950(12.73) | 140 | 6.666(13.27) | 100 | Vochtenite | (Fe++,Mg)Fe+++[(UO2)(PO4)]4(OH)·12-13(H2O) |
| 19.996(4.42) | 200 | 5.226(16.95) | 106 | 6.764(13.08) | 66 | Phlogopite | KMg3(Si3Al)O10(F,OH)2 |
| 20.000(4.41) | 200 | 6.700(13.20) | 160 | 9.080(9.73) | 160 | Roscoelite | K(V,Al,Mg)2AlSi3O10(OH)2 |
| 20.000(4.41) | 200 | 6.230(14.20) | 160 | 10.780(8.20) | 100 | Hochelagaite | (Ca,Na,Sr)Nb4O11·8(H2O) |
| 20.000(4.41) | 200 | 8.720(10.14) | 140 | 6.700(13.20) | 80 | Halloysite | Al2Si2O5(OH)4 |
| 20.000(4.41) | 200 | 9.340(9.46) | 160 | 13.280(6.65) | 160 | Kornelite | Fe+++2(SO4)3·7(H2O) |
| 20.000(4.41) | 200 | 24.600(3.59) | 200 | 18.600(4.75) | 160 | Sherwoodite | Ca9Al2V++++4V+++++24O80·56(H2O) |
| 20.020(4.41) | 200 | 6.658(13.29) | 160 | 6.320(14.00) | 140 | Norrishite | K(Mn+++2Li)Si4O10(O)2 |
[ 1 ]