Friedrichbeckeite
Lengauer C L, Hrauda N, Kolitsch U, Krickl R, Tillmanns E
Mineralogy and Petrology 96 (2009) 221-232
Friedrichbeckeite, K(_0.5Na0.5)2(Mg0.8Mn0.1Fe0.1)2(Be0.6Mg0.4)3[Si12O30],
a new milarite-type mineral from the Bellerberg volcano, Eifel area, Germany
Locality: Bellerberg volcano, Eifel area, Germany
_database_code_amcsd 0014649
CELL PARAMETERS: 9.9700 9.9700 14.1300 90.000 90.000 120.000
SPACE GROUP: P6/mcc
X-RAY WAVELENGTH: 1.541838
Cell Volume: 1216.363
Density (g/cm3): 2.666
MAX. ABS. INTENSITY / VOLUME**2: 10.51619152
RIR: 1.285
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
12.53 13.33 7.0650 0 0 2 2
16.21 4.99 5.4678 1 0 2 12
17.79 32.72 4.9850 1 1 0 6
20.57 21.62 4.3171 2 0 0 6
21.82 37.07 4.0731 1 1 2 12
24.16 25.62 3.6838 2 0 2 12
25.21 26.33 3.5325 0 0 4 2
27.28 12.61 3.2695 1 0 4 12
27.33 4.02 3.2634 2 1 0 12
28.06 100.00 3.1797 2 1 1 24
30.17 2.86 2.9627 2 1 2 24
31.03 62.14 2.8822 1 1 4 12
31.07 8.22 2.8781 3 0 0 6
32.76 29.84 2.7339 2 0 4 12
33.40 11.12 2.6825 2 1 3 24
36.03 9.45 2.4925 2 2 0 6
37.56 6.67 2.3947 3 1 0 12
38.11 3.93 2.3610 3 1 1 24
38.29 2.29 2.3505 2 2 2 12
39.67 1.85 2.2720 1 0 6 12
42.34 5.24 2.1347 3 1 3 24
43.86 1.57 2.0644 4 0 2 12
45.78 8.81 1.9822 3 1 4 24
45.81 2.51 1.9808 3 2 0 12
46.28 1.68 1.9617 3 2 1 24
48.30 7.05 1.8842 4 1 0 12
48.76 9.67 1.8676 4 1 1 24
49.92 15.62 1.8270 3 1 5 24
50.05 4.76 1.8226 3 0 6 12
50.11 3.09 1.8205 4 1 2 24
51.76 6.75 1.7663 0 0 8 2
52.91 1.23 1.7304 1 0 8 12
53.03 5.13 1.7269 5 0 0 6
53.53 9.49 1.7118 2 2 6 12
55.26 4.75 1.6625 4 1 4 24
55.28 1.71 1.6617 3 3 0 6
56.27 2.56 1.6347 2 0 8 12
56.39 2.32 1.6317 4 2 0 12
56.80 1.58 1.6210 4 2 1 24
56.93 1.08 1.6175 3 3 2 12
58.91 3.89 1.5677 4 1 5 24
59.59 1.17 1.5514 5 0 4 12
60.00 1.13 1.5418 4 2 3 24
60.01 2.15 1.5415 5 1 1 24
61.61 3.68 1.5054 3 0 8 12
61.69 5.98 1.5036 3 3 4 12
63.12 1.84 1.4730 5 1 3 24
64.68 6.17 1.4411 2 2 8 12
65.76 1.24 1.4200 5 1 4 24
66.04 2.44 1.4148 2 1 9 24
66.13 3.77 1.4131 4 2 5 24
66.28 3.96 1.4101 6 0 2 12
67.78 8.46 1.3826 5 2 0 12
68.07 1.35 1.3774 4 1 7 24
68.15 4.29 1.3760 5 2 1 24
69.09 1.15 1.3595 5 1 5 24
69.09 2.52 1.3594 1 1 10 12
70.07 1.06 1.3429 2 0 10 12
70.17 1.26 1.3412 4 2 6 24
70.68 4.48 1.3327 6 0 4 12
71.06 1.83 1.3266 5 2 3 24
71.58 1.00 1.3183 3 2 8 24
71.91 6.53 1.3130 3 1 9 24
72.96 1.08 1.2967 2 1 10 24
73.56 2.85 1.2875 5 2 4 24
74.86 1.65 1.2684 4 3 5 24
79.46 2.66 1.2061 4 1 9 24
80.06 1.83 1.1985 4 2 8 24
80.33 2.35 1.1953 2 1 11 24
80.57 3.18 1.1923 5 2 6 24
81.98 1.33 1.1753 4 4 4 12
82.91 1.29 1.1645 7 0 4 12
85.91 1.04 1.1313 4 2 9 24
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XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.