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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 |
| 8.480(10.42) | 200 | 5.386(16.44) | 160 | 6.218(14.23) | 140 | Foggite | CaAl(PO4)(OH)2·(H2O) |
| 8.480(10.42) | 200 | 7.300(12.11) | 120 | 9.660(9.15) | 80 | Misenite | K8H8(SO4)7 (?) |
| 8.480(10.42) | 200 | 5.240(16.91) | 160 | 6.620(13.36) | 120 | Rodalquilarite | H3Fe+++2(Te++++O3)4Cl |
| 8.494(10.41) | 200 | 8.358(10.58) | 140 | 5.460(16.22) | 120 | Khademite | Al(SO4)F·5(H2O) |
| 8.500(10.40) | 200 | 5.744(15.41) | 180 | 14.060(6.28) | 164 | Ojuelaite | ZnFe+++2(AsO4)2(OH)2·4(H2O) |
| 8.500(10.40) | 200 | 6.120(14.46) | 160 | 7.280(12.15) | 160 | Karasugite | SrCaAl(F,OH)7 |
| 8.500(10.40) | 200 | 9.140(9.67) | 80 | 5.928(14.93) | 40 | Retgersite | NiSO4·6(H2O) |
| 8.514(10.38) | 200 | 11.202(7.89) | 120 | 5.838(15.16) | 110 | Struvite | (NH4)MgPO4·6(H2O) |
| 8.516(10.38) | 200 | 15.180(5.82) | 98 | 8.120(10.89) | 96 | Mangazeite | Al2(SO4)(OH)4·3H2O |
| 8.520(10.37) | 200 | 6.670(13.26) | 84 | 10.906(8.10) | 84 | Riomarinaite | Bi(OH)SO4·H2O |
| 8.520(10.37) | 200 | 8.380(10.55) | 120 | 7.820(11.31) | 100 | Rostite | AlSO4(OH,F)·5(H2O) |
| 8.520(10.37) | 200 | 8.940(9.89) | 200 | 8.240(10.73) | 160 | Chaoite | C |
| 8.520(10.37) | 200 | 6.540(13.53) | 180 | 8.280(10.68) | 160 | Struvite-(K) | KMg(PO4)·6(H2O) |
| 8.520(10.37) | 200 | 5.810(15.24) | 180 | 4.096(21.68) | 160 | Calcioancylite-(Nd) | CaNd(CO3)2(OH)·(H2O) |
| 8.540(10.35) | 200 | 8.078(10.94) | 300 | 4.744(18.69) | 140 | Khatyrkite | (Cu,Zn)Al2 |
| 8.540(10.35) | 200 | 17.200(5.13) | 200 | 3.996(22.23) | 190 | Kyrgyzstanite | ZnAl4(SO4)(OH)12·3(H2O) |
| 8.540(10.35) | 200 | 5.880(15.05) | 170 | 6.000(14.75) | 170 | Dumontite | Pb2(UO2)3O2(PO4)2·5(H2O) |
| 8.552(10.34) | 200 | 10.320(8.56) | 180 | 11.240(7.86) | 100 | Camerolaite | Cu4Al2[HSbO4,SO4](OH)10(CO3)·2(H2O) |
| 8.558(10.33) | 200 | 6.212(14.25) | 120 | 7.374(11.99) | 80 | Mundrabillaite | (NH4)2Ca(HPO4)2·(H2O) |
| 8.560(10.33) | 200 | 9.620(9.19) | 200 | 13.940(6.34) | 200 | Arthurite | CuFe+++2(AsO4,PO4,SO4)2(O,OH)2·4(H2O) |
| 8.566(10.32) | 200 | 6.042(14.65) | 184 | 21.040(4.20) | 108 | Braitschite-(Ce) | (Ca,Na2)7(Ce,La)2B22O43·7(H2O) |
| 8.580(10.30) | 200 | 5.860(15.11) | 178 | 4.120(21.55) | 156 | Kozoite-(Nd) | (Nd,La,Sm,Pr)(CO3)(OH) |
| 8.580(10.30) | 200 | 10.780(8.20) | 120 | 9.660(9.15) | 90 | Variscite | AlPO4·2(H2O) |
| 8.580(10.30) | 200 | 5.580(15.87) | 140 | 6.440(13.74) | 100 | Sternbergite | AgFe2S3 |
| 8.596(10.28) | 200 | 6.500(13.61) | 110 | 8.106(10.91) | 90 | Alum-(K) | KAl(SO4)2·12(H2O) |
| 8.604(10.27) | 200 | 5.340(16.59) | 102 | 5.534(16.00) | 102 | Hazenite | KNaMg2(PO4)2·14H2O |
| 8.620(10.25) | 200 | 7.380(11.98) | 144 | 5.860(15.11) | 114 | Kozoite-(La) | La(CO3)(OH) |
| 8.620(10.25) | 200 | 4.384(20.24) | 180 | 6.338(13.96) | 140 | Lukechangite-(Ce) | Na3Ce2(CO3)4F |
| 8.628(10.24) | 200 | 5.924(14.94) | 70 | 7.052(12.54) | 28 | Alum-(Na) | NaAl(SO4)2·12(H2O) |
| 8.628(10.24) | 200 | 5.602(15.81) | 140 | 14.060(6.28) | 108 | Lanmuchangite | TlAl(SO4)2·12(H2O) |
| 8.630(10.24) | 200 | 11.260(7.85) | 200 | 6.272(14.11) | 160 | Carboborite | Ca2Mg(CO3)2B2(OH)8·4(H2O) |
| 8.640(10.23) | 200 | 6.380(13.87) | 162 | 8.120(10.89) | 114 | Sugilite | KNa2(Fe+++,Mn+++,Al)2Li3Si12O30 |
| 8.654(10.21) | 200 | 8.158(10.84) | 160 | 6.546(13.52) | 150 | Tschermigite | (NH4)Al(SO4)2·12(H2O) |
| 8.658(10.21) | 200 | 5.856(15.12) | 180 | 7.612(11.62) | 180 | Kosnarite | KZr++++2(PO4)3 |
| 8.660(10.21) | 200 | 5.960(14.85) | 180 | 4.660(19.03) | 120 | Zircosulfate | Zr(SO4)2·4(H2O) |
| 8.660(10.21) | 200 | 12.220(7.23) | 200 | 5.440(16.28) | 160 | Epistolite | (Na,[ ])2{(Na,Ti)4[Nb2(O,H2O)4Si4O14](OH,F)2}·2H2O |
| 8.660(10.21) | 200 | 8.780(10.07) | 130 | 6.120(14.46) | 110 | Mascagnite | (NH4)2SO4 |
| 8.660(10.21) | 200 | 6.160(14.37) | 160 | 3.862(23.01) | 120 | Monohydrocalcite | CaCO3·(H2O) |
| 8.660(10.21) | 200 | 3.754(23.68) | 180 | 4.500(19.71) | 140 | Simmonsite | Na2LiAlF6 |
| 8.678(10.18) | 200 | 5.766(15.35) | 100 | 8.134(10.87) | 56 | Shcherbinaite | V2O5 |
| 8.700(10.16) | 200 | 5.780(15.32) | 180 | 7.960(11.11) | 180 | Nickelhexahydrite | (Ni,Mg,Fe++)(SO4)·6(H2O) |
| 8.700(10.16) | 200 | 16.600(5.32) | 180 | 17.400(5.07) | 160 | Diadochite | Fe+++2(PO4)(SO4)(OH)·6(H2O) |
| 8.700(10.16) | 200 | 3.674(24.20) | 120 | 4.260(20.83) | 120 | Prosopite | CaAL2(F,OH)8 |
| 8.704(10.15) | 200 | 6.418(13.79) | 160 | 7.002(12.63) | 140 | Emeleusite | Na4Li2Fe+++2Si12O30 |
| 8.712(10.14) | 200 | 14.240(6.20) | 140 | 6.578(13.45) | 130 | Lonecreekite | (NH4)(Fe+++,Al)(SO4)2·12(H2O) |
| 8.720(10.14) | 200 | 5.770(15.34) | 178 | 6.500(13.61) | 140 | Phosphogartrellite | PbCuFe+++(PO4)2(OH,H2O)2 |
| 8.720(10.14) | 200 | 10.900(8.10) | 200 | 6.180(14.32) | 180 | Mansfieldite | AlAsO4·2(H2O) |
| 8.760(10.09) | 200 | 8.040(11.00) | 110 | 10.900(8.10) | 60 | Moorhouseite | (Co,Ni,Mn)SO4·6(H2O) |
| 8.760(10.09) | 200 | 6.380(13.87) | 180 | 5.080(17.44) | 160 | Bertrandite | Be4Si2O7(OH)2 |
| 8.780(10.07) | 200 | 6.116(14.47) | 180 | 10.180(8.68) | 160 | Eveite | Mn2(AsO4)(OH) |
| 8.780(10.07) | 200 | 2.472(36.31) | 180 | 4.316(20.56) | 160 | Heterogenite-2H | Co+++O(OH) |
| 8.780(10.07) | 200 | 10.900(8.10) | 100 | 10.200(8.66) | 90 | Hexahydrite | MgSO4·6(H2O) |
| 8.780(10.07) | 200 | 17.520(5.04) | 200 | 3.992(22.25) | 140 | Bazhenovite | CaS5·CaS2O3·6Ca(OH)2·20(H2O) |
| 8.780(10.07) | 200 | 8.400(10.52) | 120 | 5.780(15.32) | 100 | Wattevilleite | Na2Ca(SO4)2·4(H2O) (?) |
| 8.800(10.04) | 200 | 7.220(12.25) | 170 | 3.676(24.19) | 42 | Duttonite | V++++O(OH)2 |
| 8.800(10.04) | 200 | 4.630(19.15) | 160 | 3.608(24.65) | 120 | Heterogenite-3R | Co+++O(OH) |
| 8.800(10.04) | 200 | 17.580(5.02) | 160 | 5.500(16.10) | 100 | Akrochordite | Mn4Mg(AsO4)2(OH)4·4(H2O) |
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