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 6 Records, Sorted by D1 using 1.54056 - CuKa1 for 2θ WHERE (d1 > 3.1066 AND d1 < 3.2334)
Å (2θ)
Å (2θ)
Å (2θ)
Mineral Formula
3.148(28.33) 200 5.240(16.91) 200 5.840(15.16) 180 Calderite (Mn++,Ca)3(Fe+++,Al)2(SiO4)3
3.174(28.09) 200 3.680(24.16) 200 6.080(14.56) 200 Cesstibtantite (Cs,Na)SbTa4O12
3.180(28.04) 200 3.600(24.71) 200 4.260(20.83) 200 Lindsleyite (Ba,Sr)(Ti,Cr,Fe,Mg)21O38
Dessauite (Sr,Pb)(Y,U)(Ti,Fe+++)20O38
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

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