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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 |
| 4.112(21.59) | 200 | 4.686(18.92) | 80 | 4.284(20.72) | 70 | Ruthenium | (Ru,Ir,Os) |
| 4.114(21.58) | 200 | 5.270(16.81) | 180 | 5.932(14.92) | 180 | Pyrrhotite | Fe(1-x)S (x=0-0.17) |
| 4.116(21.57) | 200 | 6.088(14.54) | 140 | 5.440(16.28) | 100 | Boracite | Mg3B7O13Cl |
| 4.120(21.55) | 200 | 7.520(11.76) | 160 | 4.658(19.04) | 120 | Aerugite | ([ ],Ni)9(AsO4)2(AsO6) (?) |
| 4.120(21.55) | 200 | 3.560(24.99) | 60 | 2.520(35.60) | 40 | Awaruite | Ni2Fe to Ni3Fe |
| 4.120(21.55) | 200 | 6.760(13.09) | 160 | 3.526(25.24) | 140 | Bellidoite | Cu2Se |
| 4.120(21.55) | 200 | 2.522(35.57) | 50 | 2.151(41.97) | 32 | Diamond | C |
| 4.120(21.55) | 200 | 3.440(25.88) | 150 | 5.280(16.78) | 150 | Heideite | (Fe,Cr)1+x(Ti,Fe)2S4 |
| 4.120(21.55) | 200 | 4.380(20.26) | 200 | 2.520(35.60) | 150 | Lonsdaleite | C |
| 4.120(21.55) | 200 | 8.720(10.14) | 200 | 6.080(14.56) | 200 | Zemkorite | (Na,K)2Ca(CO3)2 |
| 4.122(21.54) | 200 | 5.392(16.43) | 140 | 4.248(20.89) | 100 | Ruthenarsenite | (Ru,Ni)As |
| 4.122(21.54) | 200 | 4.674(18.97) | 182 | 4.378(20.27) | 122 | Bromellite | BeO |
| 4.130(21.50) | 200 | 6.006(14.74) | 180 | 6.652(13.30) | 180 | Itoite | Pb3[GeO2(OH)2](SO4)2 |
| 4.136(21.47) | 200 | 2.926(30.53) | 160 | 4.788(18.52) | 160 | Carlsbergite | CrN |
| 4.140(21.45) | 200 | 6.720(13.16) | 120 | 3.976(22.34) | 80 | Rickardite | Cu7Te5 |
| 4.140(21.45) | 200 | 5.120(17.31) | 100 | 5.640(15.70) | 80 | Cuprostibite | Cu2(Sb,Tl) |
| 4.140(21.45) | 200 | 6.380(13.87) | 200 | 7.000(12.64) | 200 | Banalsite | BaNa2Al4Si4O16 |
| 4.140(21.45) | 200 | 6.680(13.24) | 160 | 5.700(15.53) | 160 | Vurroite | Pb20Sn2(Bi,As)22S54Cl6 |
| 4.144(21.42) | 200 | 3.586(24.81) | 170 | 3.608(24.65) | 166 | Sugakiite | Cu(Fe,Ni)8S8 |
| 4.152(21.38) | 200 | 5.716(15.49) | 140 | 9.700(9.11) | 130 | Shomiokite-(Y) | Na3Y(CO3)3ยท3(H2O) |
| 4.156(21.36) | 200 | 4.518(19.63) | 200 | 5.404(16.39) | 180 | Kutinaite | Cu14Ag6As7 |
| 4.160(21.34) | 200 | 2.160(41.78) | 160 | 3.600(24.71) | 160 | Taenite | gamma-(Fe,Ni) |
| 4.161(21.34) | 200 | 2.746(32.58) | 80 | 4.315(20.57) | 80 | Danbaite | CuZn2 |
| 4.170(21.29) | 200 | 5.104(17.36) | 180 | 3.202(27.84) | 160 | Corundum | Al2O3 |
| 4.176(21.26) | 200 | 4.820(18.39) | 182 | 2.952(30.25) | 114 | Bunsenite | NiO |
| 4.176(21.26) | 200 | 3.616(24.60) | 92 | 2.556(35.08) | 40 | Copper | Cu |
| 4.178(21.25) | 200 | 2.402(37.41) | 160 | 2.088(43.30) | 120 | Zhanghengite | (Cu,Zn,Fe,Al,Cr) |
| 4.180(21.24) | 200 | 5.320(16.65) | 120 | 3.440(25.88) | 100 | Troilite | FeS |
| 4.180(21.24) | 200 | 4.020(22.09) | 140 | 7.220(12.25) | 140 | Weissite | Cu1.9Te |
| 4.180(21.24) | 200 | 5.860(15.11) | 160 | 5.960(14.85) | 160 | Montbrayite | (Au,Sb)2Te3 |
| 4.182(21.23) | 200 | 4.946(17.92) | 106 | 4.616(19.21) | 80 | Zinc | Zn |
| 4.192(21.18) | 200 | 3.330(26.75) | 160 | 12.220(7.23) | 160 | Edgarite | FeNb2S6 |
| 4.196(21.16) | 200 | 4.432(20.02) | 52 | 4.764(18.61) | 48 | Hexamolybdenum | (Mo,Ru,Fe,Ir,Os) |
| 4.200(21.14) | 200 | 4.306(20.61) | 160 | 3.630(24.50) | 140 | Tongxinite | Cu2Zn |
| 4.210(21.08) | 200 | 4.452(19.93) | 68 | 4.776(18.56) | 64 | Rhenium | Re |
| 4.212(21.07) | 200 | 2.978(29.98) | 104 | 2.432(36.93) | 24 | Periclase | MgO |
| 4.230(20.98) | 200 | 4.710(18.83) | 160 | 2.702(33.13) | 100 | Stillwaterite | Pd8As3 |
| 4.232(20.97) | 80 | 4.650(19.07) | 80 | 8.746(10.11) | 80 | Tischendorfite | Pd8Hg3Se9 |
| 4.236(20.95) | 200 | 6.912(12.80) | 200 | 3.608(24.65) | 120 | Cameronite | AgCu7Te10 |
| 4.238(20.94) | 200 | 4.628(19.16) | 200 | 3.982(22.31) | 140 | Oregonite | Ni2FeAs2 |
| 4.240(20.93) | 200 | 4.898(18.10) | 144 | 2.999(29.77) | 90 | Osbornite | TiN |
| 4.248(20.89) | 200 | 4.460(19.89) | 194 | 3.822(23.25) | 88 | IMA2007-036 | TiFeSi2 |
| 4.260(20.83) | 200 | 4.680(18.95) | 120 | 2.820(31.70) | 80 | Arsenopalladinite | Pd8(As,Sb)3 |
| 4.260(20.83) | 200 | 15.220(5.80) | 200 | 5.940(14.90) | 180 | Uralborite | CaB2O2(OH)4 |
| 4.260(20.83) | 200 | 2.448(36.68) | 160 | 2.118(42.65) | 80 | Bortnikovite | Pd4Cu3Zn |
| 4.262(20.82) | 200 | 5.750(15.40) | 200 | 6.780(13.05) | 200 | Crichtonite | (Sr,La,Ce,Y)(Ti,Fe+++,Mn)21O38 |
| 4.268(20.80) | 200 | 4.664(19.01) | 200 | 6.020(14.70) | 200 | Nabiasite | BaMn9[(V,As)O4]6(OH)2 |
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