Mineralogy Database

X-Ray Diffraction Table

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Minerals Arranged by X-Ray Powder Diffraction

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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 4 Records, Sorted by D1 using 1.54056 - CuKa1 for 2θ WHERE (d1 > 2.24616 AND d1 < 2.33784)
Å (2θ)
Å (2θ)
Å (2θ)
Mineral Formula
2.284(39.42) 200 2.188(41.23) 160 4.360(20.35) 160 Chengdeite Ir3Fe
2.312(38.92) 200 4.000(22.21) 180 2.006(45.16) 140 Gupeiite Fe3Si
2.320(38.78) 200 4.040(21.98) 200 2.860(31.25) 160 Chromferide Fe3Cr1-x (x=0,6)
2.326(38.68) 200 4.456(19.91) 180 3.864(23.00) 140 Isoferroplatinum (Pt,Pd)3(Fe,Cu)

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