Mineralogy Database

X-Ray Diffraction Table

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Minerals Arranged by X-Ray Powder Diffraction

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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Found 151 Records, Sorted by D1 using 1.54056 - CuKa1 for 2θ WHERE (d1 > 6.8208 AND d1 < 7.0992)
D1
Å (2θ)
I1
%)
D2
Å (2θ)
I2
(%)
D3
Å (2θ)
I3
(%)
Mineral Formula
7.006(12.62) 200 5.032(17.61) 38 9.266(9.54) 30 Serrabrancaite MnPO4·(H2O)
7.010(12.62) 200 9.412(9.39) 200 9.535(9.27) 200 Acuminite SrAlF4(OH)·(H2O)
7.010(12.62) 200 13.216(6.68) 156 10.540(8.38) 120 Uklonskovite NaMg(SO4)F·2(H2O)
7.012(12.61) 200 21.040(4.20) 180 5.556(15.94) 160 Niobophyllite K2Na(Fe++,Mn)7(Nb,Ti)2Si8O26(OH)4(F,O)
7.020(12.60) 200 5.800(15.26) 180 6.940(12.74) 160 Brookite TiO2
7.020(12.60) 200 6.564(13.48) 164 6.476(13.66) 142 Stibioclaudetite AsSbO3
7.020(12.60) 200 4.302(20.63) 100 3.670(24.23) 60 Tiemannite HgSe
7.020(12.60) 200 5.374(16.48) 140 5.560(15.93) 120 Ericssonite BaMn++2Fe+++O[Si2O7](OH)
7.020(12.60) 200 3.782(23.50) 66 4.758(18.63) 44 Anatase TiO2
7.020(12.60) 200 4.280(20.74) 180 5.840(15.16) 180 Lillianite Pb3Bi2S6
7.020(12.60) 200 8.420(10.50) 200 9.700(9.11) 100 Bilinite Fe++Fe+++2(SO4)4·22(H2O)
7.020(12.60) 200 21.100(4.18) 180 5.286(16.76) 160 Hydroastrophyllite (H3O,K)2Ca(Fe+++,Mn)5-6Ti2Si8O26(OH)4F
7.020(12.60) 200 4.688(18.91) 160 5.560(15.93) 140 Twinnite Pb(Sb,As)2S4
7.022(12.60) 200 5.740(15.42) 120 6.206(14.26) 90 Davreuxite MnAl6Si4O17(OH)2
7.024(12.59) 200 28.200(3.13) 200 9.420(9.38) 140 Borocookeite Li(1+3x)Al(4-x)(BSi3)O10(OH,F)8 [x = 0-0.33]
7.024(12.59) 200 6.404(13.82) 156 6.030(14.68) 138 Laffittite AgHgAsS3
7.026(12.59) 200 14.080(6.27) 200 5.028(17.62) 180 Orthochamosite (Fe++,Mg,Fe+++)5Al(Si3Al)O10(OH,O)8
7.030(12.58) 200 8.920(9.91) 86 5.210(17.00) 72 Grossite CaAl4O7
7.032(12.58) 200 6.342(13.95) 160 7.338(12.05) 120 Hashemite Ba(Cr,S)O4
7.032(12.58) 200 4.448(19.94) 140 10.300(8.58) 110 Azurite Cu3(CO3)2(OH)2
7.040(12.56) 200 5.094(17.39) 162 7.890(11.21) 144 Sarcopside (Fe++,Mn,Mg)3(PO4)2
7.040(12.56) 200 15.380(5.74) 190 6.720(13.16) 160 Hoelite (C6H4)2(CO)2
7.040(12.56) 200 5.590(15.84) 180 8.380(10.55) 100 Guettardite Pb(Sb,As)2S4
7.040(12.56) 200 12.260(7.20) 160 7.140(12.39) 120 Tugtupite Na4AlBeSi4O12Cl
7.040(12.56) 200 8.660(10.21) 200 9.680(9.13) 80 Dietrichite (Zn,Fe++,Mn)Al2(SO4)4·22(H2O)
7.040(12.56) 200 14.100(6.26) 200 5.040(17.58) 180 Chamosite (Fe++,Mg,Fe+++)5Al(Si3Al)O10(OH,O)8
7.040(12.56) 200 9.640(9.17) 180 7.580(11.66) 70 Apjohnite MnAl2(SO4)4·22(H2O)
7.040(12.56) 200 14.120(6.25) 200 3.850(23.08) 140 Amesite Mg2Al(SiAl)O5(OH)4
7.054(12.54) 200 6.794(13.02) 142 4.626(19.17) 86 Podlesnoite BaCa2(CO3)2F2
7.060(12.53) 200 9.380(9.42) 180 5.300(16.71) 160 Thorite ThSiO4
7.060(12.53) 200 22.200(3.98) 160 11.100(7.96) 100 Kahlerite Fe++(UO2)2(AsO4)2·10-12(H2O)
7.060(12.53) 200 5.834(15.17) 120 5.210(17.00) 100 Leadhillite Pb4(SO4)(CO3)2(OH)2
7.060(12.53) 200 5.834(15.17) 120 5.210(17.00) 100 Susannite Pb4(SO4)(CO3)2(OH)2
7.062(12.52) 200 20.840(4.24) 180 4.418(20.08) 160 Chelkarite CaMgB2O4Cl2·7(H2O) (?)
7.070(12.51) 200 6.900(12.82) 140 4.106(21.63) 100 Strontianite SrCO3
7.074(12.50) 200 9.390(9.41) 180 5.306(16.69) 120 Thorogummite Th(SiO4)1-x(OH)4x
7.074(12.50) 200 6.112(14.48) 194 5.779(15.32) 192 Geocronite Pb14(Sb,As)6S23
7.074(12.50) 200 7.562(11.69) 130 19.020(4.64) 100 Ferrierite-Mg (Mg,Na,K)2Mg(Si,Al)18O36·9(H2O)
7.074(12.50) 200 7.562(11.69) 130 19.020(4.64) 100 Ferrierite-K (K,Na)2Mg(Si,Al)18O36·9(H2O)
7.074(12.50) 200 7.562(11.69) 130 19.020(4.64) 100 Ferrierite-Na (Na,K)2Mg(Si,Al)18O36·9(H2O)
7.078(12.50) 200 5.212(17.00) 160 4.160(21.34) 100 Santanaite Pb++9Pb++++2CrO16
7.080(12.49) 200 6.820(12.97) 180 11.140(7.93) 140 Voltaite K2Fe++5Fe+++3Al(SO4)12·18(H2O)
7.080(12.49) 200 6.820(12.97) 180 5.440(16.28) 100 Kobellite Pb22Cu4(Bi,Sb)30S69
7.080(12.49) 200 5.200(17.04) 180 3.784(23.49) 160 Montanite Bi2Te++++++O6·2(H2O)
7.080(12.49) 200 12.960(6.81) 160 8.480(10.42) 140 Nealite-(H2O) Pb4Fe++(As+++O3)2Cl4·2(H2O)
7.080(12.49) 150 5.306(16.69) 140 6.120(14.46) 110 Ellenbergerite Mg6TiAl6Si8O28(OH)10
7.080(12.49) 200 7.320(12.08) 200 8.000(11.05) 180 Nuffieldite Pb2Cu(Pb,Bi)Bi2S7
7.084(12.48) 200 12.960(6.81) 160 8.474(10.43) 140 Nealite Pb4Fe++(As+++++O4)2Cl4
7.090(12.47) 200 7.808(11.32) 160 5.838(15.16) 140 Junoite Pb3Cu2Bi8(S,Se)16
7.098(12.46) 200 5.240(16.91) 190 8.374(10.56) 150 Chalcocyanite CuSO4

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