data_global
_chemical_name_mineral 'Zvyaginite'
loop_
_publ_author_name
'Pekov I V'
'Lykova I S'
'Chukanov N V'
'Yapaskurt V O'
'Belakovskiy D I'
'Zolotarev A A'
'Zubkova N V'
_journal_name_full 'Geology of Ore Deposits'
_journal_volume 56 
_journal_year 2014
_journal_page_first 644
_journal_page_last 656
_publ_section_title
;
 Zvyaginite, NaZnNb2Ti[Si2O7]2O(OH,F)3(H2O)4+x(x<1), a new mineral of the epistolite
 group from the Lovozero alkaline pluton, Kola Peninsula, Russia
;
_database_code_amcsd 0020443
_chemical_compound_source 'Mt. Malyi Punkaruaiv, Lovozero alkaline complex, Kola Peninsula, Russia'
_chemical_formula_sum 'Nb1.56 Ti1.395 Zn1.2 Na1.43 Si4 O22 H11'
_cell_length_a 8.975
_cell_length_b 8.979
_cell_length_c 12.135
_cell_angle_alpha 74.328
_cell_angle_beta 80.651
_cell_angle_gamma 73.959
_cell_volume 900.819
_exptl_crystal_density_diffrn      2.944
_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
Nb1   0.95760   0.66130   0.24090   0.56000   0.02870
Ti1a   0.95760   0.66130   0.24090   0.44000   0.02870
Nb2   0.45733   0.15980   0.24176   1.00000   0.01010
Zn1   0.62000   0.11950   0.49990   0.58000   0.00710
Zn2   0.86350   0.36260   0.49910   0.62000   0.02390
Ti1   0.50000   0.50000   0.50000   0.91000   0.01400
Ti2   0.00000   0.00000   0.00000   1.01000   0.01610
Na1   0.25100   0.25000   0.49610   0.46000   0.02300
Na2   0.20100   0.90900   0.19990   0.49000   0.02600
Na3   0.71500   0.43800   0.20920   0.48000   0.02700
Si1   0.05860   0.25660   0.26540   1.00000   0.01510
Si2   0.84910   0.04680   0.26500   1.00000   0.01490
Si3   0.55770   0.75790   0.26420   1.00000   0.01430
Si4   0.34860   0.54890   0.26450   1.00000   0.01620
O1   0.23660   0.20000   0.22020   1.00000   0.01900
O2   0.73700   0.70400   0.21700   1.00000   0.05800
O3   0.03440   0.20440   0.40550   1.00000   0.01900
O4   0.48990   0.94400   0.21860   1.00000   0.02400
O5   0.83770   0.00700   0.40520   1.00000   0.02500
O6   0.97700   0.64500   0.39720   0.50000   0.08400
O-H6   0.97700   0.64500   0.39720   0.50000   0.08400
O7  -0.01200   0.44000   0.22000   1.00000   0.05400
O8   0.45900   0.67100   0.21240   1.00000   0.03300
O9   0.66400   0.49000   0.59650   1.00000   0.02800
O10   0.92300   0.88600   0.22400   1.00000   0.05300
O-H11   0.16510   0.88100   0.40770   1.00000   0.02100
O-H12   0.66060   0.37490   0.41030   1.00000   0.02300
O13   0.46570   0.29300   0.59650   1.00000   0.03500
O14   0.17900   0.63300   0.22280   1.00000   0.04200
O15   0.43080   0.38900   0.21590   1.00000   0.02700
O16   0.68050   0.13900   0.21620   1.00000   0.02600
O17   0.96300   0.16700   0.21110   1.00000   0.03500
O18   0.43880   0.10560   0.40280   0.50000   0.02100
O-H18   0.43880   0.10560   0.40280   0.50000   0.02100
Wat19   0.98600   0.72800   0.04300   1.00000   0.03600
Wat20   0.47900   0.22100   0.04400   1.00000   0.10100
Wat21   0.24800   1.00000   0.03300   1.00000   0.07300
Wat22   0.73800   0.47400   0.03840   1.00000   0.08300