Jakobssonite
Balic-Zunic T, Garavelli A, Mitolo D, Acquafredda P, Leonardsen E
Mineralogical Magazine 76 (2012) 751-760
Jakobssonite, CaAlF5, a new mineral from fumaroles at the Eldfell and Hekla
volcanoes, Iceland
Locality: Hekla volcano, Iceland
_database_code_amcsd 0019194
CELL PARAMETERS: 8.6010 6.2903 7.2190 90.000 114.610 90.000
SPACE GROUP: C2/c
X-RAY WAVELENGTH: 1.541838
Cell Volume: 355.091
Density (g/cm3): 2.776
MAX. ABS. INTENSITY / VOLUME**2: 9.740619227
RIR: 1.143
RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
2-THETA INTENSITY D-SPACING H K L Multiplicity
18.10 19.96 4.9013 1 1 0 4
19.57 2.90 4.5355 -1 1 1 4
22.74 100.00 3.9099 2 0 0 2
25.36 4.83 3.5121 1 1 1 4
27.17 3.10 3.2816 0 0 2 2
27.25 7.27 3.2728 -2 0 2 2
28.38 45.35 3.1451 0 2 0 2
28.51 89.08 3.1307 -1 1 2 4
31.54 2.65 2.8363 0 2 1 4
34.38 2.50 2.6083 -3 1 1 4
35.60 3.07 2.5216 -2 2 1 4
39.69 18.55 2.2707 0 2 2 4
39.75 7.29 2.2677 -2 2 2 4
40.53 9.17 2.2257 -1 1 3 4
42.87 1.05 2.1096 -4 0 2 2
43.92 6.55 2.0614 -3 1 3 4
44.75 9.61 2.0252 1 3 0 4
44.80 8.10 2.0230 3 1 1 4
45.42 15.85 1.9968 -1 3 1 4
46.45 38.79 1.9549 4 0 0 2
47.97 1.35 1.8964 -2 2 3 4
50.33 24.06 1.8131 -1 3 2 4
50.58 30.58 1.8047 -2 0 4 2
52.08 7.05 1.7561 2 2 2 4
52.21 6.13 1.7520 -4 2 2 4
54.20 2.51 1.6924 -3 1 4 4
54.20 5.96 1.6923 -3 3 1 4
55.33 10.51 1.6605 3 1 2 4
55.33 13.10 1.6603 4 2 0 4
55.49 9.61 1.6559 -5 1 2 4
55.86 1.90 1.6459 1 3 2 4
55.94 1.52 1.6437 -3 3 2 4
56.05 6.43 1.6408 0 0 4 2
56.21 4.31 1.6364 -4 0 4 2
56.31 1.42 1.6338 3 3 0 4
58.33 5.58 1.5819 -5 1 3 4
58.69 2.90 1.5732 -1 3 3 4
58.71 9.03 1.5726 0 4 0 2
59.01 9.97 1.5653 -2 2 4 4
60.54 1.41 1.5293 0 4 1 4
61.05 2.01 1.5177 5 1 0 4
62.02 2.08 1.4965 3 3 1 4
63.79 3.34 1.4590 2 4 0 4
64.15 1.32 1.4517 -4 2 4 4
65.86 1.55 1.4182 0 4 2 4
65.90 1.98 1.4174 -2 4 2 4
68.90 1.22 1.3628 5 1 1 4
69.84 1.93 1.3468 -3 3 4 4
70.82 6.27 1.3305 3 3 2 4
70.95 9.28 1.3284 2 0 4 2
70.96 4.24 1.3282 -5 3 2 4
71.24 4.27 1.3237 -6 0 4 2
71.79 3.47 1.3149 -5 3 1 4
72.53 1.71 1.3033 6 0 0 2
75.05 1.94 1.2656 -4 4 1 4
75.90 1.43 1.2536 5 3 0 4
77.22 2.05 1.2354 -1 5 1 4
77.98 4.65 1.2253 4 4 0 4
78.10 3.04 1.2237 2 2 4 4
78.38 5.04 1.2201 -6 2 4 4
79.63 1.04 1.2040 6 2 0 4
81.12 4.36 1.1856 -2 4 4 4
81.13 2.19 1.1855 -3 3 5 4
81.44 2.64 1.1817 -3 1 6 4
82.37 1.57 1.1707 3 3 3 4
83.33 1.02 1.1596 -7 1 4 4
85.53 1.32 1.1353 0 4 4 4
87.76 2.43 1.1122 -1 5 3 4
87.93 1.64 1.1105 -5 3 5 4
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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.