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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 |
| 3.946(22.51) | 200 | 5.580(15.87) | 80 | 6.420(13.78) | 80 | Digenite | Cu9S5 |
| 3.952(22.48) | 200 | 2.594(34.55) | 120 | 4.174(21.27) | 120 | Hexaferrum | (Fe,Os,Ru,Ir) |
| 3.964(22.41) | 200 | 5.834(15.17) | 180 | 5.692(15.56) | 120 | Larosite | (Cu,Ag)21(Pb,Bi)2S13 |
| 3.976(22.34) | 200 | 5.300(16.71) | 200 | 4.380(20.26) | 140 | Majakite | PdNiAs |
| 3.978(22.33) | 200 | 4.220(21.03) | 80 | 4.500(19.71) | 40 | Algodonite | Cu6As |
| 3.980(22.32) | 200 | 4.870(18.20) | 200 | 2.840(31.47) | 120 | Surinamite | (Mg,Fe++)3Al4BeSi3O16 |
| 3.980(22.32) | 200 | 5.400(16.40) | 160 | 5.920(14.95) | 160 | Insizwaite | Pt(Bi,Sb)2 |
| 4.000(22.21) | 200 | 3.840(23.14) | 160 | 3.880(22.90) | 160 | Xifengite | Fe5Si3 |
| 4.000(22.21) | 200 | 6.760(13.09) | 200 | 6.800(13.01) | 200 | Ardaite | Pb19Sb13S35Cl7 |
| 4.002(22.19) | 200 | 4.088(21.72) | 180 | 4.178(21.25) | 160 | Koutekite | Cu5As2 |
| 4.006(22.17) | 200 | 5.940(14.90) | 200 | 3.556(25.02) | 160 | Michenerite | (Pd,Pt)BiTe |
| 4.010(22.15) | 200 | 2.320(38.78) | 60 | 2.820(31.70) | 20 | Suessite | (Fe,Ni)3Si |
| 4.010(22.15) | 200 | 3.812(23.32) | 120 | 3.632(24.49) | 40 | Melliniite | (Ni,Fe)4P |
| 4.012(22.14) | 200 | 4.724(18.77) | 200 | 8.464(10.44) | 200 | Khaidarkanite | Na0.34Cu4Al3(OH)14F3·2(H2O) |
| 4.020(22.09) | 200 | 4.120(21.55) | 140 | 4.760(18.63) | 130 | Cohenite | (Fe,Ni,Co)3C |
| 4.020(22.09) | 200 | 4.640(19.11) | 180 | 2.848(31.38) | 100 | Griceite | LiF |
| 4.020(22.09) | 200 | 5.582(15.86) | 100 | 5.016(17.67) | 80 | Sheldrickite | NaCa3(CO3)2F3·(H2O) |
| 4.020(22.09) | 200 | 5.960(14.85) | 150 | 6.660(13.28) | 140 | Aurostibite | AuSb2 |
| 4.034(22.02) | 200 | 6.220(14.23) | 200 | 5.572(15.89) | 160 | Bariosincosite | Ba(V++++O)2(PO4)2·4(H2O) |
| 4.040(21.98) | 4.700(18.87) | 5.660(15.64) | Tertschite | Ca4B10O19·20(H2O) | |||
| 4.040(21.98) | 200 | 5.620(15.76) | 140 | 6.220(14.23) | 140 | Korzhinskite | CaB2O4·(H2O) |
| 4.040(21.98) | 200 | 5.700(15.53) | 200 | 6.080(14.56) | 200 | Marianoite | Na2Ca4(Nb,Zr)2(Si2O7)2(O,F)4 |
| 4.040(21.98) | 200 | 4.180(21.24) | 200 | 4.700(18.87) | 200 | Calcioancylite-(Ce) | CaCe(CO3)2(OH)·(H2O) |
| 4.040(21.98) | 200 | 6.640(13.32) | 180 | 3.452(25.79) | 160 | Berzelianite | Cu2Se |
| 4.046(21.95) | 200 | 5.726(15.46) | 200 | 7.060(12.53) | 100 | Mummeite | Cu0.58Ag3.11Pb1.10Bi6.65S13 |
| 4.054(21.91) | 200 | 2.340(38.44) | 60 | 2.866(31.18) | 40 | Iron | Fe |
| 4.060(21.87) | 200 | 5.700(15.53) | 200 | 7.080(12.49) | 160 | Thorbastnasite | Th(Ca,Ce)(CO3)2F2·3(H2O) |
| 4.060(21.87) | 200 | 5.720(15.48) | 140 | 7.040(12.56) | 120 | Vulcanite | CuTe |
| 4.060(21.87) | 200 | 3.934(22.58) | 120 | 2.870(31.14) | 60 | Kamacite | alpha-(Fe,Ni) |
| 4.068(21.83) | 200 | 3.524(25.25) | 84 | 2.492(36.01) | 42 | Nickel | Ni |
| 4.076(21.79) | 200 | 3.722(23.89) | 100 | 2.436(36.87) | 48 | Brownleeite | MnSi |
| 4.078(21.78) | 200 | 2.354(38.20) | 60 | 1.824(49.96) | 40 | Chromium | Cr |
| 4.080(21.76) | 200 | 10.200(8.66) | 200 | 20.200(4.37) | 120 | Uranocircite | Ba(UO2)2(PO4)2·12(H2O) |
| 4.080(21.76) | 200 | 2.340(38.44) | 180 | 1.540(60.02) | 160 | Ferchromide | Cr3Fe1-x(x=0,6) |
| 4.088(21.72) | 200 | 3.944(22.52) | 134 | 4.516(19.64) | 88 | Mavlyanovite | Mn5Si3 |
| 4.092(21.70) | 200 | 4.660(19.03) | 100 | 2.432(36.93) | 80 | IMA2008-055 | (Ni,Fe,Ir) |
| 4.100(21.66) | 200 | 4.340(20.45) | 100 | 4.760(18.63) | 60 | Isovite | (Cr,Fe)23C6 |
| 4.100(21.66) | 200 | 3.776(23.54) | 140 | 3.930(22.61) | 100 | Domeykite | Cu3As |
| 4.100(21.66) | 200 | 6.180(14.32) | 200 | 6.940(12.74) | 200 | Sulfoborite | Mg3B2(SO4)(OH)8(OH,F)2 |
| 4.100(21.66) | 200 | 2.694(33.23) | 160 | 4.380(20.26) | 140 | Jedwabite | Fe7(Ta,Nb)3 |
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