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 14 Records, Sorted by D1 using 1.54056 - CuKa1 for 2θ WHERE (d1 > 3.04192 AND d1 < 3.16608)
D1
Å (2θ)
I1
%)
D2
Å (2θ)
I2
(%)
D3
Å (2θ)
I3
(%)
Mineral Formula
3.044(29.32) 200 4.820(18.39) 200 6.720(13.16) 180 Shirokshinite K(NaMg2)Si4O10F2
3.060(29.16)
-
5.220(16.97)
-
7.820(11.31)
-
Kurumsakite (Zn,Ni,Cu)8Al8V2Si5O35·27(H2O) (?)
3.060(29.16) 200 9.160(9.65) 200 31.600(2.79) 160 Hectorite Na0,3(Mg,Li)3Si4O10(OH)2
3.078(28.99) 200 3.608(24.65) 200 5.880(15.05) 200 Tazheranite CaTiZr2O8
3.080(28.97) 200 5.340(16.59) 200 30.800(2.87) 200 Sauconite Na0,3Zn3(Si,Al)4O10(OH)2·4(H2O)
3.080(28.97) 200 5.160(17.17) 200 5.760(15.37) 120 Majorite Mg3(Fe,Al,Si)2(SiO4)3
3.080(28.97) 200 4.700(18.87) 120 5.320(16.65) 120 Mcgovernite Mn9Mg4Zn2As2Si2O17(OH)14
3.080(28.97) 200 7.180(12.32) 200 8.720(10.14) 200 Neotocite (Mn,Fe++)SiO3·(H2O) (?)
3.080(28.97) 200 5.160(17.17) 200 5.760(15.37) 120 Pyrope Mg3Al2(SiO4)3
3.088(28.89) 200 5.112(17.33) 200 5.984(14.79) 120 Glagolevite NaMg6[Si3AlO10](OH,O)8·H2O
3.096(28.81) 200 3.626(24.53) 200 5.880(15.05) 200 Lewisite (Ca,Fe++,Na)2(Sb,Ti)2O7
3.100(28.77) 200 5.044(17.57) 200 3.610(24.64) 184 Sabelliite Cu2Zn(As,Sb)O4(OH)3
3.104(28.74) 200 3.636(24.46) 200 5.900(15.00) 200 Uranmicrolite (U,Ca)2(Ta,Nb)2O6(OH)
3.148(28.33) 200 5.240(16.91) 200 5.840(15.16) 180 Calderite (Mn++,Ca)3(Fe+++,Al)2(SiO4)3

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