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Yazganite |
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Sarp H, Cerny R |
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European Journal of Mineralogy 17 (2005) 367-373 |
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Yazganite, NaFe3+2(Mg,Mn)(AsO4)3*H2O, a new mineral: |
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its description and crystal structure |
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Note: variant of the johillerite structure, alluaudite group |
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Sample: Volcanic complex of Erciyes, 10 km south of the prefecture of Kayseri, |
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near Hisarcik, village Kiranardi, Turkey |
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12.181 12.807 6.6391 90 112.441 90 C2/c |
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atom x y z occ Uiso |
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Na 0 .5 0 .0175 |
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Fe3+ .28082 .34398 .36711 .0082 |
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Mg 0 .73268 .25 .656 .0142 |
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Mn 0 .73268 .25 .344 .0142 |
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As1 0 .27992 .25 .0085 |
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As2 .24268 .10706 .12897 .0087 |
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O1 .3291 .4919 .3890 .0162 |
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O2 .3854 .0911 .1883 .0175 |
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O3 .1071 .3627 .2441 .0129 |
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O4 .3282 .3317 .1126 .0125 |
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O5 .2254 .1814 .3303 .0113 |
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O6 .0468 .2044 .4759 .0138 |
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Wat .997 .0004 .272 .5 .020 |
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