X-Ray Diffraction Table

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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Listing of 48 Records Sorted by D1 using 1.54056 - CuKa1 for 2θ WHERE (d1 > 11.858 AND d1 < 12.342)
D1
Å (2θ)
I1
%)
D2
Å (2θ)
I2
(%)
D3
Å (2θ)
I3
(%)
Mineral Formula
11.880(7.44) 100 2.460(36.49) 90 2.950(30.27) 80 Agardite-(Ce) (Ce,Ca)Cu6(AsO4)3(OH)6•3(H2O)
11.880(7.44) 100 2.950(30.27) 90 3.560(24.99) 80 Agardite-(Ce) (Ce,Ca)Cu6(AsO4)3(OH)6•3(H2O)
11.900(7.42) 100 3.098(28.79) 80 3.061(29.15) 70 Mahnertite (Na,Ca)Cu++3(AsO4)2Cl•5(H2O)
11.900(7.42) 100 3.810(23.33) 85 3.710(23.97) 70 Calcioaravaipaite PbCa2Al(F,OH)9
11.900(7.42) 100 23.100(3.82) 100 9.100(9.71) 14 Cacoxenite (Fe+++,Al)25(PO4)17O6(OH)12•75(H2O)
11.951(7.39) 100 4.190(21.19) 70 3.116(28.62) 60 Ruizite CaMn+++Si2O6(OH)•2(H2O)
11.972(7.38) 100 2.985(29.91) 100 3.540(25.14) 60 Tlapallite H6(Ca,Pb)2Cu3(SO4)(Te++++O3)4(Te++++++O6)
11.980(7.37) 100 2.967(30.09) 60 3.448(25.82) 50 Slavkovite Cu13(AsO4)6(AsO3OH)4•23(H2O)
11.980(7.37) 100 5.980(14.80) 90 3.795(23.42) 80 Vanuralite Al(UO2)2(VO4)2(OH)•11(H2O)
11.980(7.37) 100 5.990(14.78) 60 2.967(30.09) 50 Slavkovite Cu13(AsO4)6(AsO3OH)4•23(H2O)
12.000(7.36) 100 1.520(60.90) 90 2.620(34.20) 90 Aliettite [Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe++)2-3(Si,Al)4O10(OH)2•n(H2O)
12.000(7.36) 100 7.030(12.58) 100 4.420(20.07) 100 Monteregianite-(Y) (Na,K)6(Y,Ca)2Si16O38•10(H2O)
12.000(7.36) 100 2.620(34.20) 90 1.520(60.90) 90 Aliettite [Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe++)2-3(Si,Al)4O10(OH)2•n(H2O)
12.000(7.36) 100 2.694(33.23) 100 2.598(34.49) 55 Eggletonite Na2Mn8[Si11AlO29](OH)7•11(H2O)
12.000(7.36) 100 3.030(29.45) 80 6.090(14.53) 60 Zeophyllite Ca4Si3O8(OH,F)4•2(H2O)
12.000(7.36) 100 2.460(36.49) 90 3.570(24.92) 80 Mixite BiCu6(AsO4)3(OH)6•3(H2O)
12.010(7.35) 100 3.600(24.71) 80 2.490(36.04) 70 Plumboagardite (Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O)
12.060(7.32) 100 6.020(14.70) 40 3.760(23.64) 30 Kimuraite-(Y) CaY2(CO3)4•6(H2O)
12.070(7.32) 100 6.046(14.64) 100 4.040(21.98) 90 Arakiite (Zn,Mn++)(Mn++,Mg)12(Fe+++,Al)2(AsO3)(AsO4)2(OH)23
12.100(7.30) 100 2.590(34.60) 90 1.578(58.44) 90 Calcioferrite Ca4Fe++(Fe+++,Al)4(PO4)6(OH)4•12(H2O)
12.100(7.30) 100 2.968(30.08) 80 2.923(30.56) 80 Caryochroite (Na,Sr)3(Fe+++,Mg)10[Ti2Si12O37](O,OH)9•8H2O
12.100(7.30) 100 2.590(34.60) 90 2.650(33.80) 90 Calcioferrite Ca4Fe++(Fe+++,Al)4(PO4)6(OH)4•12(H2O)
12.100(7.30) 100 1.578(58.44) 90 2.590(34.60) 90 Calcioferrite Ca4Fe++(Fe+++,Al)4(PO4)6(OH)4•12(H2O)
12.100(7.30) 100 2.460(36.49) 90 4.480(19.80) 80 Modderite (Co,Fe)As
12.100(7.30) 100 10.600(8.33) 60 2.900(30.81) 50 Navajoite V2O5•3(H2O)
12.100(7.30) 100 2.923(30.56) 80 2.968(30.08) 80 Caryochroite (Na,Sr)3(Fe+++,Mg)10[Ti2Si12O37](O,OH)9•8H2O
12.100(7.30) 100 2.980(29.96) 80 6.960(12.71) 60 Fibroferrite Fe+++(SO4)(OH)•5(H2O)
12.110(7.29) 100 2.582(34.71) 40 1.578(58.44) 30 Lennilenapeite K6-7(Mg,Mn,Fe++,Fe+++,Zn)48(Si,Al)72(O,OH)216•16(H2O)
12.130(7.28) 100 2.785(32.11) 30 9.980(8.85) 22 Teruggite Ca4MgAs2B12O22(OH)12•12(H2O)
12.190(7.25) 100 3.060(29.16) 67 2.451(36.63) 31 Peretaite CaSb+++4O4(OH)2(SO4)2•2(H2O)
12.200(7.24) 100 3.330(26.75) 30 2.440(36.80) 30 Falcondoite (Ni,Mg)4Si6O15(OH)2•6(H2O)
12.200(7.24) 100 2.720(32.90) 70 3.036(29.39) 60 Vitimite Ca6B14O19(SO4)(OH)14•5(H2O)
12.200(7.24) 100 3.330(26.75) 30 2.620(34.20) 30 Falcondoite (Ni,Mg)4Si6O15(OH)2•6(H2O)
12.200(7.24) 100 7.750(11.41) 80 6.000(14.75) 30 Ulexite NaCaB5O6(OH)6•5(H2O)
12.200(7.24) 100 2.440(36.80) 30 3.330(26.75) 30 Falcondoite (Ni,Mg)4Si6O15(OH)2•6(H2O)
12.260(7.20) 100 3.050(29.26) 50 23.600(3.74) 20 Hydrobiotite [K(Mg,Fe)3(Al,Fe)Si3O10(OH,F)2]•[(Mg,Fe++,Al)3(Si,Al)4O10(OH)2•4(H2O
12.260(7.20) 100 3.500(25.43) 50 3.050(29.26) 20 Hydrobiotite [K(Mg,Fe)3(Al,Fe)Si3O10(OH,F)2]•[(Mg,Fe++,Al)3(Si,Al)4O10(OH)2•4(H2O
12.280(7.19) 100 2.840(31.47) 90 2.634(34.01) 88 Middendorfite K3Na2Mn5Si12(O,OH)36•2H2O
12.280(7.19) 100 3.077(28.99) 54 3.260(27.33) 18 Armbrusterite K5Na6Mn+++Mn++14[Si9O22]4(OH)10•4H2O
12.300(7.18) 100 10.000(8.84) 100 9.300(9.50) 80 Sherwoodite Ca9Al2V++++4V+++++24O80•56(H2O)
12.300(7.18) 100 1.530(60.46) 70 3.100(28.77) 50 Saponite (Ca/2,Na)0,3(Mg,Fe++)3(Si,Al)4O10(OH)2•4(H2O)
12.300(7.18) 100 2.580(34.74) 60 4.400(20.16) 35 Sepiolite Mg4Si6O15(OH)2•6(H2O)
12.300(7.18) 100 4.160(21.34) 100 2.550(35.16) 100 Stilpnomelane K(Fe++,Mg,Fe+++)8(Si,Al)12(O,OH)27•n(H2O)
12.300(7.18) 100 2.583(34.70) 40 2.737(32.69) 30 Franklinphilite (K,Na)4(Mn++,Mg,Zn)48(Si,Al)72(O,OH)216•6(H2O)
12.320(7.17) 100 3.220(27.68) 86 3.108(28.70) 29 Seidite-(Ce) Na4(Ce,Sr)2{Ti(OH)2(Si8O18)}(O,OH,F)4•5(H2O)
12.330(7.16) 100 3.920(22.66) 60 3.122(28.57) 60 Mcnearite NaCa5H4(AsO4)5•4(H2O)
12.330(7.16) 100 3.122(28.57) 60 3.920(22.66) 60 Mcnearite NaCa5H4(AsO4)5•4(H2O)
12.330(7.16) 100 3.440(25.88) 20 4.100(21.66) 16 Bannisterite KCa(Mn,Fe++,Zn,Mg)21(Si,Al)32O76(OH)16•4-12(H2O)

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