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Sanidine |
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Ackermann S, Kunz M, Armbruster T, Schefer J, Hanni H |
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Schweizerische Mineralogische und Petrographische Mitteilungen 84 (2004) 345-354 |
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Cation distribution in a Fe-bearing K-feldspar from Itrongay, Madagascar: |
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A combined neutron- and X-ray single-crystal diffraction study |
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Note: Neutron diffraction data, occupancies taken from simultaneous data |
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Locality: Itrongay, Madagascar |
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_database_code_amcsd 0020559 |
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8.5992 13.0277 7.1926 90 116.056 90 C2/m |
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atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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K1M .21490 .5 .86215 .895 .27 .026 .035 .032 0 .015 0 |
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Na1M .21490 .5 .86215 .105 .27 .026 .035 .032 0 .015 0 |
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SiT1 .99056 .18503 .77617 .65 .0107 .0114 .0118 .0092 .0022 .0047 .0011 |
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AlT1 .99056 .18503 .77617 .33 .0107 .0114 .0118 .0092 .0022 .0047 .0011 |
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FeT1 .99056 .18503 .77617 .02 .0107 .0114 .0118 .0092 .0022 .0047 .0011 |
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SiT2 .20946 .38211 .34437 .88 .0107 .0110 .0093 .0107 .0002 .0042 -.0001 |
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AlT2 .20946 .38211 .34437 .12 .0107 .0110 .0093 .0107 .0002 .0042 -.0001 |
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O1 .1376 .5 .2847 .020 .019 .012 .018 0 .002 0 |
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O2 .31960 .37380 .59451 .018 .020 .018 .010 .002 .003 .001 |
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O3 0 .14630 0 .024 .024 .019 .014 0 .009 0 |
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O4 .03516 .31119 .2585 .017 .017 .015 .017 -.002 .005 -.003 |
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O5 .17233 .14676 .7730 .020 .022 .030 .022 .004 .014 -.000 |
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