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 > 24.696 AND d1 < 25.704)
D1
Å (2θ)
I1
%)
D2
Å (2θ)
I2
(%)
D3
Å (2θ)
I3
(%)
Mineral Formula
24.720(3.57) 200 23.200(3.81) 80 6.822(12.97) 74 Kalifersite (K,Na)5Fe+++7Si20O50(OH)6·12(H2O)
24.800(3.56) 200 6.680(13.24) 50 12.380(7.13) 18 Ajoite (K,Na)3Cu20Al3Si29O76(OH)16·~8(H2O)
24.934(3.54) 200 8.312(10.63) 104 5.348(16.56) 26 Coalingite Mg10Fe+++2(CO3)(OH)24·2(H2O)
24.986(3.53) 200 6.472(13.67) 178 6.247(14.17) 108 Aravaipaite Pb3AlF9·(H2O)
25.000(3.53) 200 6.280(14.09) 50 5.400(16.40) 28 Ganophyllite (K,Na)2(Mn,Al,Mg)8(Si,Al)12O29(OH)7·8-9(H2O)
25.000(3.53) 200 20.600(4.29) 90 10.400(8.50) 84 Tokkoite K2Ca4[Si7O18(OH)](F,OH)
25.140(3.51) 200 6.320(14.00) 80 6.854(12.91) 30 Zakharovite Na4Mn++5Si10O24(OH)6·6(H2O)
25.200(3.50) 200 5.380(16.46) 180 4.920(18.01) 150 Tamaite (Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112·21(H2O)
25.200(3.50) 200 10.580(8.35) 140 12.360(7.15) 140 Hydrobasaluminite Al4(SO4)(OH)10·12-36(H2O)
25.260(3.49) 200 10.820(8.16) 70 15.640(5.65) 70 Peisleyite Na3Al16(SO4)2(PO4)10(OH)17·20(H2O)
25.400(3.48) 200 6.100(14.51) 160 5.780(15.32) 140 Tacharanite Ca12Al2Si18O33(OH)36
25.540(3.46) 200 5.536(16.00) 180 16.700(5.29) 140 Schoonerite Fe++2ZnMnFe+++(PO4)3(OH)2·9(H2O)
25.542(3.46) 200 6.280(14.09) 100 7.262(12.18) 100 Gerdtremmelite ZnAl2(AsO4)(OH)5
25.600(3.45) 200 9.528(9.27) 68 5.260(16.84) 58 Kankite Fe+++AsO4·3.5(H2O)
25.620(3.45) 200 12.900(6.85) 140 5.142(17.23) 120 Adamsite-(Y) NaY(CO3)2·6(H2O)
25.640(3.44) 200 15.570(5.67) 160 12.638(6.99) 80 Walkerite Ca16(Mg,Li,[ ])2[B13O17(OH)12]4Cl6·28(H2O)

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