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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 |
| 3.372(26.41) | 200 | 4.962(17.86) | 160 | 4.366(20.32) | 140 | Pseudorutile | Fe+++2Ti3O9 |
| 3.376(26.38) | 200 | 3.022(29.53) | 120 | 5.346(16.57) | 120 | Schallerite | Mn++16[As+++O2OH][Si12O30](OH)14 |
| 3.380(26.35) | 200 | 6.420(13.78) | 160 | 4.960(17.87) | 120 | Belyankinite | Ca1-2(Ti,Zr,Nb)5O12·9(H2O) (?) |
| 3.380(26.35) | 200 | 3.400(26.19) | 200 | 2.870(31.14) | 180 | Davidite-(Ce) | (Ce,La)(Y,U)(Ti,Fe+++)20O38 |
| 3.384(26.31) | 80 | 4.960(17.87) | 60 | 6.420(13.78) | 40 | Manganbelyankinite | (Mn,Ca)(Ti,Nb)5O12·9(H2O) |
| 3.388(26.28) | 200 | 6.516(13.58) | 160 | 5.970(14.83) | 140 | Yttrobetafite-(Y) | (Y,U,Ce)2(Ti,Nb,Ta)2O6(OH) |
| 3.390(26.27) | 200 | 6.500(13.61) | 160 | 5.620(15.76) | 140 | Laurite | RuS2 |
| 3.407(26.13) | 200 | 5.158(17.18) | 180 | 5.414(16.36) | 176 | Tistarite | Ti2O3 |
| 3.414(26.08) | 200 | 6.560(13.49) | 200 | 5.040(17.58) | 180 | Struverite | (Ti,Ta,Fe+++)O2 |
| 3.420(26.03) | 200 | 7.458(11.86) | 180 | 5.418(16.35) | 140 | Natanite | Fe++Sn++++(OH)6 |
| 3.426(25.99) | 200 | 4.020(22.09) | 200 | 5.380(16.46) | 180 | Maucherite | Ni11As8 |
| 3.426(25.99) | 200 | 4.488(19.77) | 176 | 5.496(16.11) | 130 | IMA2008-060 | Mg2(BO3)(OH) |
| 3.440(25.88) | 200 | 4.180(21.24) | 180 | 5.840(15.16) | 100 | Gagarinite-(Y) | NaCaY(F,Cl)6 |
| 3.440(25.88) | 200 | 6.520(13.57) | 180 | 5.100(17.37) | 160 | Ordonezite | ZnSb2O6 |
| 3.440(25.88) | 200 | 4.912(18.04) | 200 | 8.460(10.45) | 200 | Hisingerite | Fe+++2Si2O5(OH)4·2(H2O) |
| 3.480(25.58) | 200 | 5.120(17.31) | 160 | 6.660(13.28) | 160 | Tapiolite-(Fe) | (Fe++,Mn++)(Ta,Nb)2O6 |
| 3.480(25.58) | 200 | 7.400(11.95) | 140 | 10.040(8.80) | 140 | Clinohumite | (Mg,Fe++)9(SiO4)4(F,OH)2 |
| 3.480(25.58) | 200 | 5.740(15.42) | 200 | 6.620(13.36) | 200 | Hollingworthite | (Rh,Pt,Pd)AsS |
| 3.480(25.58) | 200 | 5.120(17.31) | 160 | 6.660(13.28) | 160 | Tapiolite | (Fe,Mn)(Ta,Nb)2O6 |
| 3.480(25.58) | 200 | 5.740(15.42) | 200 | 6.640(13.32) | 200 | Irarsite | (Ir,Ru,Rh,Pt)AsS |
| 3.486(25.53) | 200 | 5.738(15.43) | 200 | 5.302(16.71) | 140 | Sonolite | Mn9(SiO4)4(OH,F)2 |
| 3.488(25.52) | 180 | 5.220(16.97) | 160 | 6.600(13.40) | 140 | Bezsmertnovite | Au4Cu(Te,Pb) |
| 3.492(25.49) | 200 | 5.792(15.28) | 180 | 6.690(13.22) | 160 | Platarsite | (Pt,Rh,Ru)AsS |
| 3.500(25.43) | 200 | 5.700(15.53) | 200 | 4.860(18.24) | 140 | Gehlenite | Ca2Al(AlSi)O7 |
| 3.500(25.43) | 200 | 5.200(17.04) | 160 | 6.660(13.28) | 160 | Varlamoffite | (Sn,Fe)(O,OH)2 |
| 3.500(25.43) | 200 | 3.800(23.39) | 140 | 5.960(14.85) | 120 | Malanite | Cu(Pt,Ir)2S4 |
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