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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 |
| 4.538(19.55) | 200 | 7.440(11.89) | 190 | 4.518(19.63) | 190 | Hydroxylclinohumite | Mg9(SiO4)4(OH,F)2 |
| 4.546(19.51) | 200 | 1.719(53.24) | 120 | 4.840(18.31) | 100 | Schachnerite | Ag1.1Hg0.9 |
| 4.558(19.46) | 200 | 4.342(20.44) | 180 | 4.464(19.87) | 130 | Mertieite-I | Pd11(Sb,As)4 |
| 4.560(19.45) | 200 | 4.320(20.54) | 140 | 3.910(22.72) | 100 | Paolovite | Pd2Sn |
| 4.562(19.44) | 200 | 6.650(13.30) | 160 | 3.590(24.78) | 156 | Malladrite | Na2SiF6 |
| 4.566(19.42) | 200 | 4.326(20.51) | 80 | 2.738(32.68) | 60 | Tatyanaite | (Pt,Pd,Cu)9Cu3Sn4 |
| 4.580(19.36) | 200 | 2.740(32.65) | 80 | 4.840(18.31) | 80 | Dyscrasite | Ag3Sb |
| 4.580(19.36) | 200 | 16.000(5.52) | 200 | 27.400(3.22) | 200 | Connellite | Cu19Cl4(SO4)(OH)32·3(H2O) |
| 4.580(19.36) | 200 | 4.340(20.45) | 180 | 2.460(36.49) | 160 | Cabriite | Pd2SnCu |
| 4.584(19.35) | 200 | 6.200(14.27) | 200 | 4.222(21.02) | 150 | Tetradymite | Bi2Te2S |
| 4.584(19.35) | 200 | 6.628(13.35) | 200 | 11.014(8.02) | 200 | Diaboleite | Pb2CuCl2(OH)4 |
| 4.596(19.30) | 200 | 3.836(23.17) | 146 | 4.188(21.20) | 138 | Monipite | MoNiP |
| 4.600(19.28) | 200 | 4.460(19.89) | 160 | 2.386(37.67) | 140 | Tongbaite | Cr3C2 |
| 4.600(19.28) | 200 | 6.680(13.24) | 200 | 7.120(12.42) | 160 | Alamosite | PbSiO3 |
| 4.600(19.28) | 200 | 4.800(18.47) | 200 | 5.400(16.40) | 200 | Bornhardtite | Co++Co+++2Se4 |
| 4.600(19.28) | 200 | 2.406(37.34) | 160 | 3.980(22.32) | 120 | Yixunite | Pt3In |
| 4.600(19.28) | 200 | 3.456(25.76) | 180 | 5.600(15.81) | 160 | Amakinite | (Fe++,Mg)(OH)2 |
| 4.602(19.27) | 200 | 4.376(20.28) | 176 | 4.614(19.22) | 94 | Florenskyite | (Fe,Ni)TiP |
| 4.602(19.27) | 200 | 9.240(9.56) | 150 | 4.310(20.59) | 108 | Demartinite | K2[SiF6] |
| 4.610(19.24) | 200 | 5.414(16.36) | 160 | 5.204(17.02) | 140 | Franklinfurnaceite | Ca2(Fe+++,Al)Mn+++Mn++3Zn2Si2O10(OH)8 |
| 4.616(19.21) | 200 | 9.220(9.58) | 160 | 3.492(25.49) | 120 | Muskoxite | Mg7Fe+++4O13·10(H2O) |
| 4.620(19.20) | 200 | 5.740(15.42) | 160 | 4.500(19.71) | 140 | Hessite | Ag2Te |
| 4.630(19.15) | 200 | 2.414(37.22) | 180 | 4.022(22.08) | 160 | Zvyagintsevite | Pd3Pb |
| 4.630(19.15) | 200 | 6.860(12.89) | 140 | 5.620(15.76) | 80 | Averievite | Cu5(VO4)2O2·CuCl2 |
| 4.630(19.15) | 200 | 7.040(12.56) | 180 | 9.400(9.40) | 180 | Cookeite | LiAl4(Si3Al)O10(OH)8 |
| 4.638(19.12) | 200 | 3.278(27.18) | 120 | 2.676(33.46) | 34 | Villiaumite | NaF |
| 4.650(19.07) | 200 | 5.260(16.84) | 200 | 5.760(15.37) | 200 | Makinenite | NiSe |
| 4.660(19.03) | 200 | 9.420(9.38) | 200 | 7.960(11.11) | 180 | Donbassite | Al2[Al2.33][Si3AlO10](OH)8 |
| 4.662(19.02) | 200 | 6.210(14.25) | 180 | 5.688(15.57) | 180 | Franciscanite-VIII | Mn++3(V+++++,[ ])1-x(SiO4)(O,OH)3(x=0.5) |
| 4.662(19.02) | 200 | 5.688(15.57) | 180 | 6.210(14.25) | 180 | Franciscanite-III | Mn++6V+++++2Si2(O,OH)14 |
| 4.662(19.02) | 200 | 5.100(17.37) | 80 | 5.580(15.87) | 60 | Cadmium | Cd |
| 4.670(18.99) | 200 | 9.220(9.58) | 190 | 3.510(25.35) | 100 | Theophrastite | Ni(OH)2 |
| 4.680(18.95) | 200 | 2.700(33.15) | 70 | 3.300(27.00) | 34 | Tantalum | Ta |
| 4.680(18.95) | 200 | 2.548(35.19) | 160 | 2.804(31.89) | 110 | Potarite | PdHg |
| 4.680(18.95) | 200 | 8.020(11.02) | 200 | 7.280(12.15) | 180 | Beryllite | Be3SiO4(OH)2·(H2O) |
| 4.680(18.95) | 200 | 8.320(10.62) | 200 | 6.380(13.87) | 160 | Widenmannite | Pb2(UO2)(CO3)3 |
| 4.680(18.95) | 200 | 4.380(20.26) | 200 | 4.120(21.55) | 200 | Siderazot | Fe5N2 |
| 4.684(18.93) | 200 | 3.165(28.17) | 60 | 2.941(30.37) | 40 | Novodneprite | AuPb3 |
| 4.690(18.91) | 200 | 5.480(16.16) | 180 | 5.588(15.85) | 180 | Jalpaite | Ag3CuS2 |
| 4.708(18.83) | 200 | 5.348(16.56) | 180 | 14.060(6.28) | 170 | Tuliokite | BaNa6Th(CO3)6·6(H2O) |
| 4.710(18.83) | 200 | 4.078(21.78) | 104 | 2.460(36.49) | 72 | Gold | Au |
| 4.718(18.79) | 200 | 4.088(21.72) | 80 | 2.462(36.46) | 52 | Silver | Ag |
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