...Mary E. Mrose Abstract Compounds having the formula A(UO 2 ) 2 (AsO 4 ) 2 · 8H 2 O, where A=Ca, H 2 , Na 2 , or (NH 4 ) 2 , have been synthesized, the last two by base exchange with hydrogen-uranospinite, H 2 (UO 2 ) 2 (AsO 4 ) 2 8H 2 O. Synthetic calcium-uranospinite and hydrogen-uranospinite...

... from the host granite of Menzenschwand, primary hydrothermal uraninite II and secondary (supergene) uranyl silicates (uranophane and cuprosklodowskite), uranyl phosphates (torbernite and uranocircite), and uranyl arsenates (zeunerite, heinrichite, nováčekite, walpurgite, and uranospinite) were analyzed...

...) Å 3 , Z = 4, D calc 3.392 g/mL. These Sr compounds are isostructural with autunite, Ca[(UO 2 )(PO 4 )] 2 (H 2 O) 11 . On this basis, uranospinite is predicted to be isostructural with autunite, and have the formula Ca[(UO 2 )(AsO 4 )] 2 (H 2 O) 11 , with expected crystal-data: orthorhombic, space...

... of oxonium in synthetichydrogen uranospinite, H 3 (UO 2 AsO 4 )·3 H 2 O, was obtained by infrared spectroscopy. It was not possible either to confirm or disprove the existence of oxonium in synthetic members of the alunite-jarosite group by infrared spectroscopy. Although fine structure characteristic...

... ). § E-mail address : [email protected] 04 05 2004 29 01 2004 © 2004 Mineralogical Association of Canada 2004 chernikovite trögerite abernathyite meta-ankoleite sodium meta-autunite sodium uranospinite uranyl phosphate uranyl arsenate oxonium meta-autunite group crystal...

...: Mineral. Mag. 39 1974, 920. Meta-natrium-uranospinite = sodium-uranospinite : Mineral. Mag . 35 1966, 1145. Mn-palygorskite = yofortierite : Greenland Geol. Surv., Bull. 190 2001, 123–125. Mn-sepiolite = yofortierite : I.V. Pekov, pers. commun. (2005). Muchuanite = mixture...

...-water content. However, water surpluses are very frequent, and not all micas suffer from intercalations. Thus, additional means of accommodating water in the formula of a mica need to be considered (such as hydronium in uranospinite, Wilkins et al. , 1974 , alunite-jarosite, Ripmeester et al...

... in the literature (Krivovichev & Plášil, 2013). However, structural data are still missing for few members of the autunite group such as uranocircite, Ba[(UO 2 )(PO 4 )] 2 (H 2 O) 10 ( Weisbach, 1877 ; Locock et al. , 2005a), uranospinite, Ca[(UO 2 )(AsO 4 )] 2 (H 2 O) 11 ( Weisbach, 1873 ; Mrose, 1953...

... al. 1997 ). Berman (1957) found uranosphaerite associated with walpurgite, uranospinite, trögerite, zeunerite, erythrite, and “black cobalt oxide”. He provided optical properties and an unindexed X-ray powder-diffraction pattern (see also Frondel et al. 1956 and ICDD–PDF 8–321), and concluded...

... in the literature. It was originally described from a unique occurrence of U and Bi minerals in the Walpurgis vein of the Weisser Hirsch mine at Schneeberg–Neustädtel, Saxony, Germany, associated with trögerite, zeunerite, uranospinite and uranosphaerite ( Weisbach 1871 , 1877 ). Walpurgite was studied...

...): Synthetic uranospinites. American Mineralogist, 38, 1159 1168. Nazarchuk, E.V., Gurzhiy, V.V., Tagirova, Y.G., Charkin, D.O., Krzhizhanovskaya, M.G., Kasatkin, A.V., Eremin, O.V. (2023) High-Temperature Crystal Chemistry of Meta-Autunite Group Minerals: Metatorbernite, Cu(UO2)2(PO4)2(H2O)8 and Metazeunerite...

...). The mineral is found on the dump of the Sophia mine near Wittichen in the central Black Forest, Baden-Württemberg Germany. It occurs with chadwickite, metakahlerite, arsenuranospathite, uranospinite, and erythrine either on altered uraninite or on barite near uraninite. At the Müllenbach uranium deposit...

... on the surfaces of umohoite, U-bearing powellite and sodium uranospinite. These Na uranyl molybdates were not fully characterized, and are not recognized as mineral species. However, their formation as products of alteration in U–Mo deposits is probable, and they may also form owing to oxidative alteration...

... 6.99, c 21.2 Å, β = 103.9°, V 1008.4 Å 3 , Z = 2, D calc 3.45 g/cm 3 . On the basis of the isotypy of synthetic Sr[(UO 2 )(PO 4 )] 2 (H 2 O) 11 and Sr[(UO 2 )(AsO 4 )] 2 (H 2 O) 11 with synthetic autunite Ca[(UO 2 )(PO 4 )] 2 (H 2 O) 11 , crystal data are predicted for uranospinite: Ca[(UO...

... for liberating the U and As responsible for the new species and many other uranyl-bearing arsenates found at the deposit. The mineral is associated with arsenopyrite, pyrite, galena, scorodite, arseniosiderite, mansfieldite, metazeunerite, trögerite, and sodium uranospinite. It forms imperfect, {100} flattened...

... O Tooeleite Fe 3+ 6 (As 3+ O 3 ) 4 (SO 4 )(OH) 4 ·4H 2 O Uranospinite Ca(UO 2 ) 2 (AsO 4 ) 2 ·10H 2 O Weilite CaAsO 3 OH Yukonite Ca 2 Fe 3+ 2 (AsO 4 ) 4 (OH)·12H 2 O Zeunerite Cu 2+ (UO 2 ) 2 (AsO 4 ) 2 ·10-16H 2 O Zykaite Fe 3 (AsO 4 ) 3 (SO 4 )(OH)·15H 2 O Where...

..., manganberzeliite, manganohörnesite, metalodèvite, metazeunerite, mimetite, ogdensburgite, ojuelaite, parabrandtite, parasymplesite, pharmacolite, pharmacosiderite, picropharmacolite, retzian-(La), retzian-(Nd), sarkinite, scorodite, sterlinghillite, tilasite, turneaureite, uranospinite, villyaellenite...