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 16 Records, Sorted by D1 using 1.54056 - CuKa1 for 2θ WHERE (d1 > 3.2144 AND d1 < 3.3456)
D1
Å (2θ)
I1
%)
D2
Å (2θ)
I2
(%)
D3
Å (2θ)
I3
(%)
Mineral Formula
3.218(27.70) 200 6.318(14.01) 200 5.266(16.82) 160 Cobaltaustinite CaCo(AsO4)(OH)
3.220(27.68) 200 5.040(17.58) 200 5.900(15.00) 200 Maghemite gamma-Fe+++2O3
3.236(27.54) 200 3.746(23.73) 200 5.290(16.75) 200 Zavaritskite BiOF
3.240(27.51) 200 4.280(20.74) 200 5.900(15.00) 200 Bismutite Bi2(CO3)O2
3.240(27.51) 200 5.420(16.34) 200 6.060(14.61) 160 Hibschite Ca3Al2(SiO4)3-x(OH)4x(x=0.2-1.5)
3.250(27.42) 200 4.280(20.74) 200 4.204(21.12) 120 Pseudosinhalite Mg2Al3B2O9(OH)
3.258(27.35) 200 5.318(16.66) 200 10.600(8.33) 200 Murdochite PbCu6O8-x(Cl,Br)2x
3.266(27.28) 200 5.418(16.35) 170 4.846(18.29) 130 Pyrite FeS2
3.270(27.25) 200 6.622(13.36) 200 14.800(5.97) 200 Akaganeite Fe+++(O,OH,Cl)
3.270(27.25) 200 8.000(11.05) 196 4.660(19.03) 138 Nsutite (Mn++++1-x)(Mn++x)(O2-2x)(OH2x) where x = 0.06-0.07
3.280(27.16) 200 2.780(32.17) 190 5.680(15.59) 170 Simpsonite Al4(Ta,Nb)3O13(OH)
3.300(27.00)
-
4.300(20.64)
-
4.900(18.09)
-
Akhtenskite Mn++++O2
3.334(26.72) 200 5.078(17.45) 180 5.580(15.87) 160 Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe+++)3O12
3.340(26.67) 200 5.340(16.59) 194 7.260(12.18) 192 Eskolaite Cr2O3
3.340(26.67) 200 2.840(31.47) 120 4.320(20.54) 120 Kleberite FeTi6O13ยท4(H2O) (?)
3.344(26.63) 200 3.800(23.39) 200 4.880(18.16) 200 Malyshevite PdCuBiS3

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