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chemische Formel Meta-Arsenuranospathit gesucht!

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Lynx:
-Theye, T., Walenta, K., & Markl, G. (2016). The chemical composition of uranospathite, arsenuranospathite, and associated minerals revisited: the peculiarity of fluorine incorporation in autunite group minerals. Neues Jahrbuch für Mineralogie-Abhandlungen, 59.
"A detailed analytical study of arsenuranospathite from Menzenschwand was performed by Chukanov et al. (2009). They investigated about 50 specimens with arsenuranospathite, collected in the seventies and eighties of the 20th century, with EDS techniques. In part the specimens were fully hydrated, in part partially dehydrated.<...> They also analyzed a partially dehydrated arsenuranospathite (called analogue of arsenuranospathite) and derived the empirical formula Al0.98(UO2)2.04[(AsO4)1.66(PO4)0.34] F0.88(OH)0.14 * 8.77 H2O. <...>
However, Chukanov et al. (2009) state that the samples show wide variations of fluorine contents. In most cases > 0.5 F atoms per formula unit, but several samples contain < 0.5 F (cf. Fig. 6). This variation, however, is not reflected in the suggested formula."

Im selben Text kommen die Autoren zu folgenden Formulierung zweier Endglieder:
"The same reasoning can be applied for arsenuranospathite
Al1-x□x(UO2)2(AsO4)2(H2O)20 + 3x F1-3x
Al1-x□x(UO2)2(AsO4)2(H2O)20 + 3x(OH)1-3x
Arsenuranospathite from Menzenschwand is always F-dominant with F/[F+(OH)] > 0.5 and x ~ 0.2, whereas the same mineral from Wittichen has a similar x of 0.0 to 0.2, and a large variation in F/[F+(OH)] of = 0.2 to 0.7."

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