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 36 Records, Sorted by D1 using 1.54056 - CuKa1 for 2θ WHERE (d1 > 11.7698 AND d1 < 12.2502)
D1
Å (2θ)
I1
%)
D2
Å (2θ)
I2
(%)
D3
Å (2θ)
I3
(%)
Mineral Formula
11.780(7.50) 200 16.020(5.51) 200 6.280(14.09) 180 Dewindtite Pb3[H(UO2)3O2(PO4)2]2·12(H2O)
11.780(7.50) 200 5.880(15.05) 100 5.140(17.24) 20 Chloromagnesite MgCl2
11.780(7.50) 200 7.320(12.08) 180 5.852(15.13) 160 Clinochalcomenite CuSeO3·2(H2O)
11.794(7.49) 200 25.540(3.46) 180 5.742(15.42) 160 Mourite U++++Mo++++++5O12(OH)10
11.800(7.49) 200 15.900(5.55) 162 7.882(11.22) 142 Deliensite Fe++(UO2)2(SO4)2(OH)2·3(H2O)
11.820(7.47) 200 19.000(4.65) 180 6.320(14.00) 140 Zanazziite Ca2(Mg,Fe++)(Mg,Fe++,Al,Mn,Fe+++)4Be4(PO4)6(OH)4·6(H2O)
11.831(7.47) 200 15.721(5.62) 174 8.744(10.11) 172 Kochsandorite CaAl2(CO3)2(OH)4·H2O
11.840(7.46) 200 5.568(15.90) 172 6.340(13.96) 106 Atencioite Ca2Fe++[ ]Mg2Fe++2Be4(PO4)6(OH)4·6H2O
11.840(7.46) 200 6.800(13.01) 160 5.920(14.95) 120 Studtite [(UO2)O2(H2O)2](H2O)2
11.852(7.45) 200 13.546(6.52) 126 10.068(8.78) 116 Metarossite CaV2O6·2(H2O)
11.860(7.45) 200 6.980(12.67) 180 4.720(18.78) 140 Cesbronite-x Cu5(TeO3)2(OH)6·2(H2O)
11.868(7.44) 200 6.980(12.67) 184 9.778(9.04) 142 Cesbronite Cu5(TeO3)2(OH)6·2(H2O)
11.880(7.44) 200 5.940(14.90) 86 10.420(8.48) 74 Schertelite (NH4)2MgH2(PO4)2·4(H2O)
11.886(7.43) 200 9.632(9.17) 130 6.338(13.96) 88 Ruifrancoite Ca2([ ],Mn)2(Fe+++,Mn,Mg)4Be4(PO4)6(OH)4·6H2O
11.900(7.42) 200 6.020(14.70) 180 12.920(6.84) 160 Paraumbite K3Zr2HSi6O18·n(H2O) n=3 to 7
11.920(7.41) 200 19.160(4.61) 180 6.360(13.91) 140 Roscherite Ca(Mn++,Fe++)5Be4(PO4)6(OH)4·6(H2O)
11.940(7.40) 200 12.220(7.23) 160 6.180(14.32) 140 Nabesite Na2BeSi4O10·4(H2O)
11.940(7.40)
-
8.660(10.21)
-
8.420(10.50)
-
Kumdykolite NaAlSi3O8
11.960(7.39) 200 6.304(14.04) 180 18.960(4.66) 180 Guimaraesite Ca2(Zn,Mg,Fe)5Be4(PO4)6(OH)4·6H2O
11.980(7.37) 200 7.160(12.35) 180 10.942(8.07) 140 Melanophlogite SiO2·n(C,H,O,S)
11.988(7.37) 200 5.890(15.03) 164 15.808(5.59) 140 IMA2009-038 Ca4Al2(PO4)2F8·5H2O
11.996(7.36) 200 19.150(4.61) 106 6.384(13.86) 88 Footemineite Ca2Mn++Mn++2Mn++2Be4(PO4)6(OH)4·6H2O
12.012(7.35) 200 6.006(14.74) 140 6.094(14.52) 120 Olmsteadite KFe++2(Nb,Ta)(PO4)2O2·2(H2O)
12.020(7.35) 200 6.010(14.73) 160 6.108(14.49) 140 Johnwalkite K(Mn++,Fe+++,Fe++)2(Nb,Ta)(PO4)2O2((H2O),OH)2
12.030(7.34) 200 7.388(11.97) 134 4.280(20.74) 60 Mcguinnessite (Mg,Cu)2(CO3)(OH)2
12.040(7.34) 200 15.680(5.63) 200 6.500(13.61) 160 Sitinakite Na2K(Ti,Nb)4O4(SiO4)2(O,OH)·4(H2O)
12.046(7.33) 200 6.730(13.14) 136 5.886(15.04) 110 Ramanite-(Cs) Cs[B5O6(OH)4]·2H2O
12.060(7.32) 200 6.660(13.28) 160 13.420(6.58) 160 Nielsbohrite K(UO2)3(AsO4)(OH)4·H2O
12.092(7.30) 200 6.648(13.31) 118 13.830(6.39) 52 Vajdakite [(MoO2)2(H2O)2As2O5]·(H2O)
12.120(7.29) 200 5.960(14.85) 180 7.940(11.13) 160 Natrosilite Na2Si2O5
12.136(7.28) 200 6.530(13.55) 180 6.046(14.64) 100 Gainesite Na2Zr2Be(PO4)4·1-2(H2O)
12.154(7.27) 200 11.236(7.86) 180 19.070(4.63) 160 Nevadaite (Cu++,[ ],Al,V+++)6[Al8(PO4)8F8] (H2O)23
12.168(7.26) 200 7.716(11.46) 180 6.942(12.74) 160 Frolovite CaB2(OH)8
12.202(7.24) 200 11.242(7.86) 182 19.030(4.64) 134 Cloncurryite [Cu0.56(VO)0.44]Al2(PO4)2(F,OH)·2.5H2O)
12.220(7.23) 200 6.328(13.98) 130 4.692(18.90) 106 Boehmite AlO(OH)
12.220(7.23) 200 9.000(9.82) 180 6.358(13.92) 140 Moydite-(Y) YB(OH)4(CO3)

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