data_global
_chemical_name_mineral 'Ellingsenite'
loop_
_publ_author_name
'Yakovenchuk V N'
'Ivanyuk G Y'
'Pakhomovsky Y A'
'Selivanova E A'
'Mikhailova J A'
'Krivovichev S V'
'Zolotarev A A'
'Zalkind O A'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 49 
_journal_year 2011
_journal_page_first 1165
_journal_page_last 1173
_publ_section_title
;
 Ellingsenite, Na5Ca6Si18O38(OH)13*6H2O, a new martinite-related mineral species
 from phonolite of the Aris alkaline complex, Namibia
 Note: This is reported as an incomplete structure
;
_database_code_amcsd 0018739
_chemical_compound_source 'Ariskop quarry, Aris alkaline complex, Namibia'
_chemical_formula_sum 'Na3.62 Ca5.1 Si16 O43.96 H3.92'
_cell_length_a 9.576
_cell_length_b 9.577
_cell_length_c 16.438
_cell_angle_alpha 85.85
_cell_angle_beta 75.23
_cell_angle_gamma 60.142
_cell_volume 1261.534
_exptl_crystal_density_diffrn      1.901
_symmetry_space_group_name_H-M 'P -1'
loop_
_space_group_symop_operation_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_U_iso_or_equiv
Na1   0.50000   0.00000   0.50000   1.00000   0.02100
Na2   0.84480  -0.21280   0.71070   0.86000   0.01700
Ca1   0.35640  -0.29070  -0.50250   1.00000   0.01520
Ca2   0.08180  -0.85820  -0.51300   1.00000   0.01250
Ca3   0.77560  -0.41590  -0.49420   0.55000   0.01800
Na3   0.77560  -0.41590  -0.49420   0.45000   0.01800
Si1   0.45950  -0.44400  -0.23010   1.00000   0.01660
Si2   0.80560  -0.66300  -0.33280   1.00000   0.01250
Si3   0.29870   0.45770  -0.32680   1.00000   0.01390
Si4   0.05010  -0.03240  -0.33090   1.00000   0.01140
Si5   0.92470  -0.41530  -0.32460   1.00000   0.01470
Si6   0.41830  -0.16030  -0.33120   1.00000   0.01280
Si7   0.54530   0.08880  -0.32540   1.00000   0.01350
Si8   0.78990  -0.11000  -0.22250   1.00000   0.01610
O1   0.08500  -0.07780  -0.42720   1.00000   0.01500
O2   0.93000  -0.36500  -0.41820   1.00000   0.03300
O3   0.66400   0.06700  -0.41710   1.00000   0.01900
O4   0.37000   0.47900  -0.42220   1.00000   0.02100
O5   0.81500  -0.66160  -0.42930   1.00000   0.01500
O6   0.78160  -0.19800  -0.56240   1.00000   0.01300
O7   0.39200   0.27100  -0.30220   1.00000   0.02100
O8   0.75700  -0.09100  -0.12370   1.00000   0.04200
O9   0.87000  -0.55000  -0.30300   1.00000   0.02100
O10   0.93200  -0.84100  -0.30920   1.00000   0.01800
O11   0.63800   0.04400  -0.25060   1.00000   0.01800
O12   0.10900   0.49600  -0.30750   1.00000   0.02100
O13   0.49500  -0.23100  -0.42490   1.00000   0.01700
O14   0.30800  -0.43800  -0.25930   1.00000   0.01900
O15   0.96300  -0.12100  -0.26970   1.00000   0.02000
O16   0.62500  -0.60600  -0.27300   1.00000   0.02300
O17   0.45400  -0.01800  -0.31540   1.00000   0.01800
O18   0.21400  -0.07200  -0.30350   1.00000   0.01900
O19   0.48200  -0.29100  -0.26220   1.00000   0.02000
O20   0.80200  -0.27200  -0.25050   1.00000   0.02300
O21   0.42100  -0.44000  -0.13170   1.00000   0.04100
Wat22   0.38500   0.08400  -0.18700   0.25000   0.05000
Wat23   0.91500  -0.22200  -0.85700   0.73000   0.05000