...J. Plášil; M. Dušek; J. Čejka; J. Sejkora Abstract The crystal structure of rabejacite from Jáchymov, ideally Ca 2 [(UO 2 ) 4 O 4 (SO 4 ) 2 ](H 2 O) 8 , was solved by charge flipping from single-crystal data and refined to R 1 = 11.94% for 1422 unique observed reflections [ I > 3σ( I...

... Joachimsthal) ore district, Western Bohemia, Czech Republic. It grows on altered surface of relics of primary minerals: uraninite, chalcopyrite, and tennantite, and is associated with pseudojohannite, rabejacite, uranopilite, zippeite, and gypsum. Sejkoraite-(Y) forms crystalline aggregates consisting...

... ( Frondel, 1958 ; Čejka et al., 1988 ), rabejacite ( Deliens and Piret, 1993 ; Sejkora et al., 2000 ; Frost et al., 2004b ), uranopilite ( Traill, 1952 ), jáchymovite ( Čejka et al., 1996 ), mare-cottite and some natural and synthetic zippeites ( Frondel, 1952 ). Other minerals have been...

... since 1981. The uraninite is covered by gypsum and tiny orange crystals of marecottite. On other larger samples, and especially in the cotype, marecottite is directly associated with rabejacite, johannite, a new cryptocrystalline light-green hydrated U-Cu-sulfate (IMA 2000-019), an earthy pale-yellow U...

..., magnesozippeite, cobaltzippeite, zinczippeite, nickelzippeite, rabejacite, marécottite, sejkoraite-(Y), and pseudojohannite ( Brugger et al . 2003 , 2006 , Frondel et al . 1976 , Plášil et al . 2011a , 2013 , 2014a , b, Vochten et al . 1995 ). Fig. 1. The sheet of uranyl and sulfate polyhedra...

... are gypsum in crystalline aggregates ( Fig. 2 ), and mostly amorphous or poorly crystalline Cu (±) U sulfates and chalcophyllite. No additional uranyl minerals have been found in the proximity of the zippeite, except rabejacite (on one sample) and an inadequately characterized Cu–UO 2 –VO 4 –H 2 O phase...

... new uranyl mineral species: fontanite, Ca[(UO 2 ) 3 O 2 (CO 3 ) 2 ](H 2 O) 6 ( Deliens & Piret, 1992 ), rabejacite, Ca(UO 2 ) 4 (SO 4 ) 2 (OH) 6 (H 2 O) 6 ( Deliens & Piret, 1993 ), and seelite, Mg[(UO 2 )(AsO 3 ) x (AsO 4 ) 1−x ] 2 (H 2 O) 7 ( Bariand et al. , 1993...

... −1 ; Čejka et al. 1996 ), rabejacite (901–906 cm −1 ; Sejkora et al. 2000 ), and of one of two zippeite groups (~910 cm −1 ; Čejka 1999 ). However, the wavenumber of the ν 3 (UO 2 ) 2+ of pseudojohannite is comparable with that of the second zippeite group (870 to 883 cm −1 ; Čejka 1999...

..., tschermigite, ungemachite, vanthoffite, vlodavetsite, voltaite, vonbezingite, wherryite, woodwardite, wroewolfeite, xitieshanite, ye’elimite, zincobotryogen and zincovoltaite. Amarantite, letovicite, mountkeithite, potassium alum, glaucocerinite, leightonite, löweite, zircosulfate, rabejacite...

...), geminite, gilmarite, iltisite, jacquesdietrichite, lapeyreite, maghrebite, perroudite, pushcharovskite, rabejacite, radovanite, rouaite, theoparacelsite, tillmannsite, trimounsite-(Y), walkilldellite-(Fe) and yvonite. Members of AFM have actively collected the phosphate minerals of Fumade and are largely...

... of rabejacite, the Ca 2+ -dominant member of the zippeite group . Mineralogical Magazine , 57 , 1249 – 1263 . Plášil J. , Kampf A.R. , Kasatkin...

..., johannite Cu(UO 2 ) 2 (SO 4 ) 2 (OH) 2 ·8H 2 O, magnesiozippeite Mg(UO 2 ) 2 (SO 4 )O 2 ·3.5H 2 O, natrozippeite Na(UO 2 ) 2 (SO 4 )O(OH)·2H 2 O, rabejacite Ca(UO 2 ) 4 (SO 4 ) 2 (OH) 6 ·6H 2 O, schoepite (UO 2 ) 8 O 2 (OH) 12 ·12H 2 O, schröckingerite NaCa 3 (UO 2 )(CO 3 ) 3 (SO 4 )F·10H 2 O, uranopilite...

.... , Čejka , J. and Sejkora , J. ( 2014 ) The crystal structure of rabejacite, the Ca 2+ -dominant member of the zippeite group . Mineralogical Magazine , 57 , 1249 – 1263 . Plášil , J. , Škácha , P. , Sejkora , J. , Kampf , A.R. , Škoda , R. , Čejka , J. , Hloušek...