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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 |
| 9.374(9.43) | 200 | 8.674(10.19) | 160 | 20.240(4.36) | 140 | Metavauxite | Fe++Al2(PO4)2(OH)2·8(H2O) |
| 9.376(9.42) | 200 | 6.546(13.52) | 176 | 5.730(15.45) | 140 | Thometzekite | Pb(Cu,Zn)2(AsO4)2·2(H2O) |
| 9.378(9.42) | 200 | 4.894(18.11) | 150 | 4.688(18.91) | 90 | Nitrobarite | Ba(NO3)2 |
| 9.380(9.42) | 60 | 8.560(10.33) | 40 | 5.962(14.85) | 200 | Pautovite | CsFe2S3 |
| 9.398(9.40) | 200 | 6.644(13.32) | 100 | 5.730(15.45) | 80 | Orthominasragrite | VO(SO4)·5(H2O) |
| 9.398(9.40) | 200 | 4.698(18.87) | 140 | 5.754(15.39) | 130 | Hieratite | K2SiF6 |
| 9.400(9.40) | 200 | 4.900(18.09) | 100 | 7.660(11.54) | 100 | Doloresite | H8V++++6O16 |
| 9.408(9.39) | 200 | 6.686(13.23) | 94 | 7.078(12.50) | 90 | Lunijianlaite | LiAl6(Si7Al)O20(OH)10 |
| 9.428(9.37) | 200 | 6.286(14.08) | 140 | 18.856(4.68) | 136 | Lithiophorite | (Al,Li)Mn++++O2(OH)2 |
| 9.440(9.36) | 200 | 6.104(14.50) | 160 | 12.882(6.86) | 140 | Kinoite | Ca2Cu2Si3O8(OH)4 |
| 9.450(9.35) | 200 | 5.998(14.76) | 150 | 6.172(14.34) | 150 | Wardite | NaAl3(PO4)2(OH)4·2(H2O) |
| 9.460(9.34) | 200 | 9.600(9.20) | 200 | 9.680(9.13) | 200 | Millisite | (Na,K)CaAl6(PO4)4(OH)9·3(H2O) |
| 9.460(9.34) | 200 | 7.420(11.92) | 170 | 7.980(11.08) | 120 | Chalcanthite | CuSO4·5(H2O) |
| 9.468(9.33) | 200 | 7.882(11.22) | 180 | 3.844(23.12) | 100 | Jacquesdietrichite | Cu2[BO(OH)2](OH)3 |
| 9.480(9.32) | 140 | 3.638(24.45) | 140 | 4.500(19.71) | 140 | Fullerite | C60 |
| 9.516(9.29) | 200 | 5.410(16.37) | 190 | 8.454(10.46) | 130 | Metavariscite | AlPO4·2(H2O) |
| 9.520(9.28) | 200 | 6.180(14.32) | 160 | 18.180(4.86) | 120 | Kleemanite | ZnAl2(PO4)2(OH)2·3(H2O) |
| 9.520(9.28) | 15.420(5.73) | 22.000(4.01) | Karpinskite | (Mg,Ni)2Si2O5(OH)2 (?) | |||
| 9.540(9.26) | 200 | 12.780(6.91) | 160 | 6.360(13.91) | 140 | Mangangordonite | (Mn++,Fe++,Mg)Al2(PO4)2(OH)2·8(H2O) |
| 9.560(9.24) | 200 | 7.496(11.80) | 160 | 8.144(10.85) | 160 | Derriksite | Cu4(UO2)(SeO3)2(OH)6 |
| 9.560(9.24) | 200 | 4.520(19.62) | 80 | 4.780(18.55) | 80 | Nordstrandite | Al(OH)3 |
| 9.580(9.22) | 200 | 6.988(12.66) | 184 | 7.536(11.73) | 66 | Wupatkiite | (Co,Mg,Ni)Al2(SO4)4·22(H2O) |
| 9.580(9.22) | 200 | 7.020(12.60) | 156 | 10.140(8.71) | 140 | Lishizhenite | ZnFe+++2(SO4)4·14(H2O) |
| 9.587(9.22) | 200 | 5.265(16.83) | 94 | 11.735(7.53) | 78 | Zincolibethenite | CuZn(PO4)OH |
| 9.588(9.22) | 200 | 4.720(18.78) | 80 | 3.944(22.52) | 60 | Doyleite | Al(OH)3 |
| 9.594(9.21) | 200 | 6.562(13.48) | 146 | 5.324(16.64) | 116 | IMA2008-065 | (Na,K)6Ca2(Si6Al6O24)Cl2(CO3) |
| 9.600(9.20) | 200 | 9.400(9.40) | 130 | 6.008(14.73) | 100 | Humboldtine | Fe++(C2O4)·2(H2O) |
| 9.600(9.20) | 200 | 8.100(10.91) | 100 | 6.040(14.65) | 50 | Haggite | V2O2(OH)3 |
| 9.610(9.19) | 200 | 11.660(7.58) | 178 | 7.066(12.52) | 168 | Gladiusite | Fe++2(Fe+++,Mg)4(PO4)(OH)13·H2O |
| 9.620(9.19) | 200 | 9.920(8.91) | 200 | 7.800(11.33) | 180 | Xitieshanite | Fe+++(SO4)(Cl)·7(H2O) |
| 9.622(9.18) | 200 | 8.092(10.92) | 138 | 10.116(8.73) | 86 | Romerite | Fe++Fe+++2(SO4)4·14(H2O) |
| 9.624(9.18) | 200 | 10.514(8.40) | 180 | 14.620(6.04) | 160 | Eakerite | Ca2SnAl2Si6O18(OH)2·2(H2O) |
| 9.626(9.18) | 200 | 9.408(9.39) | 168 | 5.996(14.76) | 116 | Lindbergite | Mn(C2O4)·2(H2O) |
| 9.640(9.17) | 200 | 5.400(16.40) | 106 | 8.000(11.05) | 94 | Orpiment | As2S3 |
| 9.640(9.17) | 200 | 11.360(7.78) | 180 | 5.120(17.31) | 130 | Borax | Na2B4O5(OH)4·8(H2O) |
| 9.640(9.17) | 200 | 8.680(10.18) | 80 | 8.600(10.28) | 40 | Gibbsite | Al(OH)3 |
| 9.640(9.17) | 200 | 7.020(12.60) | 180 | 8.640(10.23) | 70 | Pickeringite | MgAl2(SO4)4·22(H2O) |
| 9.660(9.15) | 200 | 22.200(3.98) | 100 | 14.140(6.25) | 80 | Zincaluminite | Zn6Al6(SO4)2(OH)26·5(H2O) |
| 9.660(9.15) | 200 | 5.510(16.07) | 120 | 4.160(21.34) | 100 | IMA2009-022 | BiMo2+xO7(OH)·H2O |
| 9.678(9.13) | 8.846(9.99) | 8.462(10.45) | Akdalaite | 5(Al2O3)·(H2O) | |||
| 9.680(9.13) | 200 | 5.180(17.10) | 120 | 19.340(4.57) | 120 | Cyanophyllite | Cu++5Al2(SbO4)3(OH)7·9(H2O) |
| 9.680(9.13) | 200 | 5.458(16.23) | 164 | 5.738(15.43) | 160 | Noelbensonite | BaMn+++2(Si2O7)(OH)2·(H2O) |
| 9.682(9.13) | 200 | 19.276(4.58) | 200 | 5.494(16.12) | 120 | Utahite | Cu5Zn3(Te++++++O4)4(OH)8·7(H2O) |
| 9.688(9.12) | 200 | 4.844(18.30) | 90 | 4.196(21.16) | 70 | Cryptohalite | (NH4)2SiF6 |
| 9.696(9.11) | 200 | 13.678(6.46) | 128 | 7.094(12.47) | 114 | Pattersonite | PbFe3(PO4)2(OH)4(H2O,OH)2 |
| 9.700(9.11) | 200 | 6.290(14.07) | 170 | 14.380(6.14) | 156 | Zektzerite | NaLiZrSi6O15 |
| 9.700(9.11) | 200 | 5.316(16.66) | 160 | 6.372(13.89) | 160 | Cyrilovite | NaFe+++3(PO4)2(OH)4·2(H2O) |
| 9.700(9.11) | 200 | 7.558(11.70) | 76 | 8.880(9.95) | 32 | Alpersite | (Mg,Cu)SO4·7H2O |
| 9.720(9.09) | 200 | 5.132(17.26) | 170 | 7.200(12.28) | 150 | Antlerite | Cu3(SO4)(OH)4 |
| 9.740(9.07) | 200 | 7.520(11.76) | 150 | 9.640(9.17) | 110 | Bieberite | CoSO4·7(H2O) |
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