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X-Ray Diffraction Table |
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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.
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| D1 Å (2θ) |
I1 %) |
D2 Å (2θ) |
I2 (%) |
D3 Å (2θ) |
I3 (%) |
Mineral | Formula |
| 7.074(12.50) | 200 | 9.390(9.41) | 180 | 5.306(16.69) | 120 | Thorogummite | Th(SiO4)1-x(OH)4x |
| 7.074(12.50) | 200 | 6.112(14.48) | 194 | 5.779(15.32) | 192 | Geocronite | Pb14(Sb,As)6S23 |
| 7.074(12.50) | 200 | 7.562(11.69) | 130 | 19.020(4.64) | 100 | Ferrierite-Na | (Na,K)2Mg(Si,Al)18O36·9(H2O) |
| 7.074(12.50) | 200 | 7.562(11.69) | 130 | 19.020(4.64) | 100 | Ferrierite-Mg | (Mg,Na,K)2Mg(Si,Al)18O36·9(H2O) |
| 7.078(12.50) | 200 | 5.212(17.00) | 160 | 4.160(21.34) | 100 | Santanaite | Pb++9Pb++++2CrO16 |
| 7.080(12.49) | 150 | 5.306(16.69) | 140 | 6.120(14.46) | 110 | Ellenbergerite | Mg6TiAl6Si8O28(OH)10 |
| 7.080(12.49) | 200 | 5.200(17.04) | 180 | 3.784(23.49) | 160 | Montanite | Bi2Te++++++O6·2(H2O) |
| 7.080(12.49) | 200 | 6.820(12.97) | 180 | 5.440(16.28) | 100 | Kobellite | Pb22Cu4(Bi,Sb)30S69 |
| 7.080(12.49) | 200 | 12.960(6.81) | 160 | 8.480(10.42) | 140 | Nealite-(H2O) | Pb4Fe++(As+++O3)2Cl4·2(H2O) |
| 7.080(12.49) | 200 | 6.820(12.97) | 180 | 11.140(7.93) | 140 | Voltaite | K2Fe++5Fe+++3Al(SO4)12·18(H2O) |
| 7.080(12.49) | 200 | 7.320(12.08) | 200 | 8.000(11.05) | 180 | Nuffieldite | Pb2Cu(Pb,Bi)Bi2S7 |
| 7.084(12.48) | 200 | 12.960(6.81) | 160 | 8.474(10.43) | 140 | Nealite | Pb4Fe++(As+++++O4)2Cl4 |
| 7.090(12.47) | 200 | 7.808(11.32) | 160 | 5.838(15.16) | 140 | Junoite | Pb3Cu2Bi8(S,Se)16 |
| 7.098(12.46) | 200 | 5.240(16.91) | 190 | 8.374(10.56) | 150 | Chalcocyanite | CuSO4 |
| 7.100(12.46) | 200 | 5.020(17.65) | 130 | 4.096(21.68) | 40 | Paralstonite | BaCa(CO3)2 |
| 7.100(12.46) | 200 | 5.014(17.67) | 70 | 4.100(21.66) | 46 | Alstonite | BaCa(CO3)2 |
| 7.108(12.44) | 200 | 10.962(8.06) | 170 | 6.782(13.04) | 126 | Ramanite-(Rb) | Rb[B5O6(OH)4]·2H2O |
| 7.114(12.43) | 200 | 6.924(12.77) | 140 | 6.844(12.92) | 110 | Matteuccite | NaHSO4·(H2O) |
| 7.116(12.43) | 200 | 6.202(14.27) | 164 | 7.948(11.12) | 144 | Svenekite | Ca(H2AsO4)2 |
| 7.118(12.42) | 200 | 14.260(6.19) | 94 | 6.156(14.38) | 90 | Natronambulite | (Na,Li)Mn++4[Si5O14(OH)] |
| 7.120(12.42) | 200 | 3.648(24.38) | 150 | 5.320(16.65) | 100 | Wakefieldite-(Y) | YVO4 |
| 7.120(12.42) | 200 | 2.164(41.70) | 180 | 2.202(40.95) | 180 | Gladite | PbCuBi5S9 |
| 7.120(12.42) | 200 | 17.620(5.01) | 160 | 11.640(7.59) | 100 | Cuprocopiapite | CuFe+++4(SO4)6(OH)2·20(H2O) |
| 7.120(12.42) | 200 | 5.106(17.35) | 140 | 7.640(11.57) | 100 | Chenevixite | Cu2Fe+++2(AsO4)2(OH)4·(H2O) |
| 7.120(12.42) | 200 | 6.940(12.74) | 116 | 9.600(9.20) | 104 | Museumite | Pb2(Pb,Sb)2S8[Te,Au]2 |
| 7.120(12.42) | 200 | 5.820(15.21) | 160 | 3.558(25.01) | 130 | Sulphohalite | Na6(SO4)2FCl |
| 7.120(12.42) | 200 | 11.980(7.37) | 56 | 8.700(10.16) | 46 | Mikasaite | Fe+++2(SO4)3 |
| 7.120(12.42) | 200 | 3.636(24.46) | 110 | 5.280(16.78) | 100 | Cahnite | Ca2B(AsO4)(OH)4 |
| 7.120(12.42) | 200 | 17.100(5.16) | 200 | 10.140(8.71) | 120 | Metakirchheimerite | Co(UO2)2(AsO4)2·8(H2O) |
| 7.120(12.42) | 200 | 4.960(17.87) | 160 | 19.400(4.55) | 160 | IMA2009-009 | KNa2Li(Mg,Fe)2Ti2Si8O24 |
| 7.120(12.42) | 200 | 3.658(24.31) | 180 | 3.556(25.02) | 160 | Umangite | Cu3Se2 |
| 7.120(12.42) | 200 | 6.080(14.56) | 160 | 6.400(13.83) | 140 | Uralolite | Ca2Be4(PO4)3(OH)3·5(H2O) |
| 7.122(12.42) | 200 | 5.430(16.31) | 78 | 6.116(14.47) | 78 | Carlosruizite | K6(Na,K)4Na6Mg10(Se++++++O4)12(IO3)12·12(H2O) |
| 7.124(12.41) | 200 | 5.666(15.63) | 160 | 9.346(9.46) | 110 | Parisite-(Ce) | Ca(Ce,La)2(CO3)3F2 |
| 7.128(12.41) | 200 | 5.308(16.69) | 150 | 5.922(14.95) | 140 | Danburite | CaB2(SiO4)2 |
| 7.138(12.39) | 200 | 6.236(14.19) | 160 | 7.060(12.53) | 120 | Bismuthinite | Bi2S3 |
| 7.138(12.39) | 200 | 5.010(17.69) | 160 | 6.016(14.71) | 160 | Boromuscovite | KAl2(Si3B)O10(OH,F)2 |
| 7.140(12.39) | 200 | 6.478(13.66) | 154 | 5.844(15.15) | 134 | Roedderite | (Na,K)2(Mg,Fe++)5Si12O30 |
| 7.140(12.39) | 200 | 17.300(5.10) | 200 | 6.620(13.36) | 180 | Metauranopilite | (UO2)6(SO4)(OH)10·5(H2O) |
| 7.140(12.39) | 200 | 10.060(8.78) | 160 | 17.780(4.97) | 160 | Heinrichite | Ba(UO2)2(AsO4)2·10-12(H2O) |
| 7.140(12.39) | 200 | 17.300(5.10) | 200 | 6.620(13.36) | 180 | Metauranospinite | Ca(UO2)2(AsO4)2·8(H2O) |
| 7.146(12.38) | 200 | 4.270(20.79) | 180 | 5.616(15.77) | 160 | Chabourneite | (Tl,Pb)21(Sb,As)91S147 |
| 7.148(12.37) | 200 | 5.812(15.23) | 90 | 7.234(12.22) | 80 | Matlockite | PbFCl |
| 7.160(12.35) | 200 | 14.300(6.18) | 200 | 4.660(19.03) | 180 | Dickite | Al2Si2O5(OH)4 |
| 7.160(12.35) | 200 | 6.960(12.71) | 160 | 14.400(6.13) | 160 | Magnesiozippeite | Mg(H2O)3.5(UO2)2(SO4)O2 |
| 7.160(12.35) | 200 | 5.182(17.10) | 180 | 3.408(26.13) | 160 | Krivovichevite | Pb3[Al(OH)6](SO4)(OH) |
| 7.160(12.35) | 200 | 7.180(12.32) | 120 | 5.764(15.36) | 110 | Lorandite | TlAsS2 |
| 7.160(12.35) | 200 | 15.260(5.79) | 180 | 6.380(13.87) | 180 | Chapmanite | Sb+++Fe+++2(SiO4)2(OH) |
| 7.162(12.35) | 200 | 4.382(20.25) | 112 | 3.740(23.77) | 94 | Frankdicksonite | BaF2 |
| 7.162(12.35) | 200 | 7.780(11.36) | 146 | 5.556(15.94) | 112 | Cotunnite | PbCl2 |
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