data_9004543
_chemical_name 'Coskrenite-(Ce)'
loop_
_publ_author_name
'Peacor D R'
'Rouse R C'
'Essene E J'
'Lauf R J'
_journal_name_full "The Canadian Mineralogist"
_journal_volume 37
_journal_year 1999
_journal_page_first 1453
_journal_page_last 1462
_publ_section_title
;
 Coskrenite-(Ce), (Ce,Nd,La)2(SO4)2(C2O4).8H2O, a new rare-earth oxalate mineral
 from Alum Cave Bluff, Tennessee: Characterization and crystal structure
 Locality: Alum Cave Bluff, Tennessee, USA
;
_chemical_formula_sum '(Ce.53 Nd.28 La.1 Pr.045 Sm.02 Eu.015 Gd.005 Y.005) S C O
_cell_length_a 6.007
_cell_length_b 8.368
_cell_length_c 9.189
_cell_angle_alpha 99.90
_cell_angle_beta 105.55
_cell_angle_gamma 107.71
_cell_volume 407.414
_symmetry_space_group_name_H-M 'P -1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_Uiso_or_equiv
Ce   0.77072   0.24583   0.67858   0.53000 ?
Nd   0.77072   0.24583   0.67858   0.28000 ?
La   0.77072   0.24583   0.67858   0.10000 ?
Pr   0.77072   0.24583   0.67858   0.04500 ?
Sm   0.77072   0.24583   0.67858   0.02000 ?
Eu   0.77072   0.24583   0.67858   0.01500 ?
Gd   0.77072   0.24583   0.67858   0.00500 ?
Y   0.77072   0.24583   0.67858   0.00500 ?
S   0.84430   0.29470   0.29320   1.00000 ?
C   0.12800   0.06460   0.55520   1.00000 ?
O1   0.31500   0.04170   0.53260   1.00000 ?
O2   0.13340   0.18370   0.66030   1.00000 ?
O3   0.25480   0.69900   0.57680   1.00000 ?
O4   0.09010   0.53180   0.73640   1.00000 ?
O5w   0.43820   0.53640   0.33440   1.00000 ?
O6   0.34780   0.83380   0.85010   1.00000 ?
O7w   0.77720   0.00610   0.80750   1.00000 ?
O8   0.06610   0.24960   0.33330   1.00000 ?
O9w   0.11710   0.34680   0.95250   1.00000 ?
O10w   0.41070   0.71640   0.10510   1.00000 ?
H1   0.48600   0.28200   0.87000   1.00000   0.02533
H2   0.78900   0.54000   0.00500   1.00000   0.02533
H3   0.13800   0.05600   0.23000   1.00000   0.02533
H4   0.36800   0.04300   0.18000   1.00000   0.01267
H5   0.41900   0.44000   0.63500   1.00000   0.03800
H6   0.37900   0.46700   0.34500   1.00000   0.03800
H7   0.09600   0.26500   0.99800   1.00000   0.02533