LMucko/crystallography-open-database huggingface dataset:
Crystal chemistry of vesuvianite: Site preferences of square-pyramidal coordinated sites sample #3 from Jinmu
Ohkawa, M.; Yoshiasa, A.; Takeno, S.; American Mineralogist 77 (1992) 945–953; doi:

data_9001501
_publ_section_title
;
 Crystal chemistry of vesuvianite: Site preferences of square-pyramidal
 coordinated sites
 sample #3 from Jinmu
;
_journal_name_full               'American Mineralogist'
_journal_page_first              945
_journal_page_last               953
_journal_volume                  77
_journal_year                    1992
_chemical_formula_sum            'Al5.48 Ca9.5 F3.07 Fe1.02 H1.93 O35.93 Si9'
_chemical_name_mineral           Vesuvianite
_space_group_IT_number           126
_symmetry_space_group_name_Hall  '-P 4a 2bc'
_symmetry_space_group_name_H-M   'P 4/n n c :2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   15.583
_cell_length_b                   15.583
_cell_length_c                   11.801
_cell_volume                     2865.636
_database_code_amcsd             0001539
_exptl_crystal_density_diffrn    3.415
_cod_original_cell_volume        2865.635
_cod_original_sg_symbol_H-M      'P 4/n n c'
_cod_original_formula_sum        'Ca9.5 Fe1.02 Al5.48 Si9 O35.93 (F3.07 H1.93)'
_cod_database_code               9001501
Crystal chemistry of vesuvianite: Site preferences of square-pyramidal coordinated sites sample #4 from Chichibu
Ohkawa, M.; Yoshiasa, A.; Takeno, S.; American Mineralogist 77 (1992) 945–953; doi:

data_9001502
_publ_section_title
;
 Crystal chemistry of vesuvianite: Site preferences of square-pyramidal
 coordinated sites
 sample #4 from Chichibu
;
_journal_name_full               'American Mineralogist'
_journal_page_first              945
_journal_page_last               953
_journal_volume                  77
_journal_year                    1992
_chemical_formula_sum            'Al5.88 Ca9.5 Fe0.36 H5 Mg0.26 O39 Si9'
_chemical_name_mineral           Vesuvianite
_space_group_IT_number           126
_symmetry_space_group_name_Hall  '-P 4a 2bc'
_symmetry_space_group_name_H-M   'P 4/n n c :2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   15.546
_cell_length_b                   15.546
_cell_length_c                   11.828
_cell_volume                     2858.569
_database_code_amcsd             0001540
_exptl_crystal_density_diffrn    3.364
_cod_original_sg_symbol_H-M      'P 4/n n c'
_cod_original_formula_sum        'Ca9.5 Mg.26 Fe.36 Al5.88 Si9 O39 H5'
_cod_database_code               9001502
Leakeite, NaNa2(Mg2Fe2Li)Si8O22(OH)2, a new alkali amphibole from the Kajlidongri manganese mine, Jhabua district, Madhya Pradesh, India
Hawthorne, F. C.; Oberti, R.; Ungaretti, L.; Grice, J. D.; American Mineralogist 77 (1992) 1112–1115; doi:

data_9001503
_publ_section_title
;
 Leakeite, NaNa2(Mg2Fe2Li)Si8O22(OH)2, a new alkali amphibole from the
 Kajlidongri manganese mine, Jhabua district, Madhya Pradesh, India
;
_journal_name_full               'American Mineralogist'
_journal_page_first              1112
_journal_page_last               1115
_journal_volume                  77
_journal_year                    1992
_chemical_compound_source
'Kajlidongri manganese mine, Jhabua district, Madhya Pradesh, India'
_chemical_formula_sum            'Ca0.04 Fe2 H2 Li0.83 Mg2.17 Na2.962 O24 Si8'
_chemical_name_mineral           Leakeite
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 104.37
_cell_angle_gamma                90
_cell_length_a                   9.822
_cell_length_b                   17.836
_cell_length_c                   5.286
_cell_formula_units_Z            2
_cell_volume                     897.056
_database_code_amcsd             0001541
_exptl_crystal_density_diffrn    3.149
_cod_original_formula_sum        'O24 Si8 Mg2.17 Fe2 Li.83 Na2.962 Ca.04 H2'
_cod_database_code               9001503
Attakolite: New data and crystal-structure determination
Grice, J. D.; Dunn, P. J.; American Mineralogist 77 (1992) 1285–1291; doi:

data_9001504
_publ_section_title
;
 Attakolite: New data and crystal-structure determination
;
_journal_name_full               'American Mineralogist'
_journal_page_first              1285
_journal_page_last               1291
_journal_volume                  77
_journal_year                    1992
_chemical_formula_sum            'Al4 Ca H5 Mn O20 P3 Si'
_chemical_name_mineral           Attakolite
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 113.83
_cell_angle_gamma                90
_cell_length_a                   17.188
_cell_length_b                   11.477
_cell_length_c                   7.322
_cell_formula_units_Z            4
_cell_volume                     1321.250
_database_code_amcsd             0001542
_exptl_crystal_density_diffrn    3.263
_cod_original_formula_sum        'Ca Mn Al4 Si P3 O20 H5'
_cod_database_code               9001504
Description and crystal structure of vonbezingite, a new Ca-Cu-SO4-H2O mineral from the Kalahari manganese field, South Africa
Dai, Y. S.; Harlow, G. E.; American Mineralogist 77 (1992) 1292–1300; doi:

data_9001505
_publ_section_title
;Description and crystal structure of vonbezingite, a new Ca-Cu-SO4-H2O
 mineral from the Kalahari manganese field, South Africa
;
_journal_name_full               'American Mineralogist'
_journal_page_first              1292
_journal_page_last               1300
_journal_volume                  77
_journal_year                    1992
_chemical_compound_source        'Wessels mine, South Africa'
_chemical_formula_sum            'Ca6 Cu3 O26 S3'
_chemical_name_mineral           Vonbezingite
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 108.68
_cell_angle_gamma                90
_cell_length_a                   15.122
_cell_length_b                   14.358
_cell_length_c                   22.063
_cell_formula_units_Z            8
_cell_volume                     4538.010
_database_code_amcsd             0001543
_exptl_crystal_density_diffrn    2.761
_cod_original_formula_sum        'Cu3 Ca6 S3 O26'
_cod_database_code               9001505
Tolbachite, CuCl2, the first example of Cu2+ octahedrally coordinated by Cl
Burns, P. C.; Hawthorne, F. C.; American Mineralogist 78 (1993) 187–189; doi:

data_9001506
_publ_section_title
;
 Tolbachite, CuCl2, the first example of Cu2+ octahedrally coordinated by Cl
;
_journal_name_full               'American Mineralogist'
_journal_page_first              187
_journal_page_last               189
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum            'Cl2 Cu'
_chemical_name_mineral           Tolbachite
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 122.197
_cell_angle_gamma                90
_cell_length_a                   6.9038
_cell_length_b                   3.2995
_cell_length_c                   6.824
_cell_formula_units_Z            2
_cell_volume                     131.540
_database_code_amcsd             0001544
_exptl_crystal_density_diffrn    3.395
_cod_original_formula_sum        'Cu Cl2'
_cod_database_code               9001506
Ribbeite, a second example of edge-sharing silicate tetrahedra in the leucophoenicite group
Freed, R. L.; Rouse, R. C.; Peacor, D. R.; American Mineralogist 78 (1993) 190–194; doi:

data_9001507
_publ_section_title
;
 Ribbeite, a second example of edge-sharing silicate tetrahedra in the
 leucophoenicite group
;
_journal_name_full               'American Mineralogist'
_journal_page_first              190
_journal_page_last               194
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum            'H2 Mn5 O10 Si2'
_chemical_name_mineral           Ribbeite
_space_group_IT_number           62
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   10.732
_cell_length_b                   15.672
_cell_length_c                   4.811
_cell_formula_units_Z            4
_cell_volume                     809.171
_database_code_amcsd             0001545
_exptl_crystal_density_diffrn    4.046
_cod_original_formula_sum        'Mn5 Si2 O10 H2'
_cod_database_code               9001507
Cation occupancies in serendibite: A crystal structure study Sample from Johnsburg, New York Displacement parameters obtained from ICSD
Van Derveer, D. G.; Swihart, G. H.; Sen Gupta, P. K.; Grew, E. S.; American Mineralogist 78 (1993) 195–203; doi:

data_9001508
_publ_section_title
;
 Cation occupancies in serendibite: A crystal structure study
 Sample from Johnsburg, New York
 Displacement parameters obtained from ICSD
;
_journal_name_full               'American Mineralogist'
_journal_page_first              195
_journal_page_last               203
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum            'Al5 B1.632 Ca1.598 Mg2 Na0.402 O20 Si3.368'
_chemical_name_mineral           Serendibite
_space_group_IT_number           2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_cell_angle_alpha                106.37
_cell_angle_beta                 96.10
_cell_angle_gamma                124.38
_cell_formula_units_Z            2
_cell_length_a                   10.010
_cell_length_b                   10.393
_cell_length_c                   8.631
_cell_volume                     669.890
_database_code_amcsd             0001546
_exptl_crystal_density_diffrn    3.416
_cod_original_formula_sum        'B1.632 Si3.368 Al5 Mg2 (Ca1.598 Na.402) O20'
_cod_database_code               9001508
Dehydration mechanism of clinoptilolite and heulandite: Single-crystal X-ray study of Na-poor, Ca-, K-, Mg-rich clinoptilolite at 100 K Sample Natural Data obtained from the ICSD
Armbruster, T.; American Mineralogist 78 (1993) 260–264; doi:

data_9001509
_publ_section_title
;
 Dehydration mechanism of clinoptilolite and heulandite: Single-crystal X-ray
 study of Na-poor, Ca-, K-, Mg-rich clinoptilolite at 100 K
 Sample Natural
 Data obtained from the ICSD
;
_journal_name_full               'American Mineralogist'
_journal_page_first              260
_journal_page_last               264
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum
'Al3.48 Ba0.16 Ca0.784 H12.2 K0.28 Mg0.36 Na0.96 O48.2 Si14.52'
_chemical_name_mineral           Clinoptilolite-Ca
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 116.45
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   17.622
_cell_length_b                   17.895
_cell_length_c                   7.399
_cell_volume                     2089.007
_database_code_amcsd             0001547
_exptl_crystal_density_diffrn    2.194
_cod_original_formula_sum
'(Si14.52 Al3.48) O48.2 Na.96 Ca.784 Ba.16 K.28 Mg.36 H12.2'
_cod_database_code               9001509
Dehydration mechanism of clinoptilolite and heulandite: Single-crystal X-ray study of Na-poor, Ca-, K-, Mg-rich clinoptilolite at 100 K Sample Dehyd 1 Data obtained from the ICSD
Armbruster, T.; American Mineralogist 78 (1993) 260–264; doi:

data_9001510
_publ_section_title
;
 Dehydration mechanism of clinoptilolite and heulandite: Single-crystal X-ray
 study of Na-poor, Ca-, K-, Mg-rich clinoptilolite at 100 K
 Sample Dehyd 1
 Data obtained from the ICSD
;
_journal_name_full               'American Mineralogist'
_journal_page_first              260
_journal_page_last               264
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum
'Al3.48 Ba0.16 Ca0.444 H3.36 K0.84 Na0.56 O39.36 Si14.52'
_chemical_name_mineral           Clinoptilolite-Ca
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 116.77
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   17.588
_cell_length_b                   17.572
_cell_length_c                   7.389
_cell_volume                     2038.863
_database_code_amcsd             0001548
_exptl_crystal_density_diffrn    1.988
_cod_original_formula_sum
'(Si14.52 Al3.48) O39.36 Na.56 Ca.444 Ba.16 K.84 H3.36'
_cod_database_code               9001510
Dehydration mechanism of clinoptilolite and heulandite: Single-crystal X-ray study of Na-poor, Ca-, K-, Mg-rich clinoptilolite at 100 K Sample Dehyd 2 Data obtained from the ICSD
Armbruster, T.; American Mineralogist 78 (1993) 260–264; doi:

data_9001511
_publ_section_title
;
 Dehydration mechanism of clinoptilolite and heulandite: Single-crystal X-ray
 study of Na-poor, Ca-, K-, Mg-rich clinoptilolite at 100 K
 Sample Dehyd 2
 Data obtained from the ICSD
;
_journal_name_full               'American Mineralogist'
_journal_page_first              260
_journal_page_last               264
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum
'Al3.48 Ba0.16 Ca0.22 H2.58 K1.06 Na0.42 O38.58 Si14.52'
_chemical_name_mineral           Clinoptilolite-K
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 116.71
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   17.619
_cell_length_b                   17.503
_cell_length_c                   7.371
_cell_volume                     2030.552
_database_code_amcsd             0001549
_exptl_crystal_density_diffrn    1.968
_cod_original_formula_sum
'(Si14.52 Al3.48) O38.58 Na.42 Ca.22 Ba.16 K1.06 H2.58'
_cod_database_code               9001511
Dehydration mechanism of clinoptilolite and heulandite: Single-crystal X-ray study of Na-poor, Ca-, K-, Mg-rich clinoptilolite at 100 K Sample Dehyd 3 Data obtained from the ICSD
Armbruster, T.; American Mineralogist 78 (1993) 260–264; doi:

data_9001512
_publ_section_title
;
 Dehydration mechanism of clinoptilolite and heulandite: Single-crystal X-ray
 study of Na-poor, Ca-, K-, Mg-rich clinoptilolite at 100 K
 Sample Dehyd 3
 Data obtained from the ICSD
;
_journal_name_full               'American Mineralogist'
_journal_page_first              260
_journal_page_last               264
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum
'Al3.48 Ba0.16 Ca0.16 H2.42 K1.08 Na0.38 O38.42 Si14.52'
_chemical_name_mineral           Clinoptilolite-K
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 116.77
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   17.610
_cell_length_b                   17.456
_cell_length_c                   7.360
_cell_volume                     2019.978
_database_code_amcsd             0001550
_exptl_crystal_density_diffrn    1.970
_cod_original_formula_sum
'(Si14.52 Al3.48) O38.42 Na.38 Ca.16 Ba.16 K1.08 H2.42'
_cod_database_code               9001512
Reassignment of cation site occupancies in tourmaline: Al-Mg disorder in the crystal structure of dravite
Hawthorne, F. C.; MacDonald, D. J.; Burns, P. C.; American Mineralogist 78 (1993) 265–270; doi:

data_9001513
_publ_section_title
;
 Reassignment of cation site occupancies in tourmaline: Al-Mg disorder in the
 crystal structure of dravite
;
_journal_name_full               'American Mineralogist'
_journal_page_first              265
_journal_page_last               270
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum
;Al6.078 B3 Ca0.009 Cr0.006 Fe0.612 K0.014 Mg2.274 Mn0.003 Na0.814 O34 Si6
 Ti0.03
;
_chemical_name_mineral           Dravite
_space_group_IT_number           160
_symmetry_space_group_name_Hall  'R 3 -2"'
_symmetry_space_group_name_H-M   'R 3 m :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   15.947
_cell_length_b                   15.947
_cell_length_c                   7.214
_cell_formula_units_Z            3
_cell_volume                     1588.784
_exptl_crystal_density_diffrn    3.198
_cod_depositor_comments
;
 Adding the _atom_site_type_symbol data item.

 Antanas Vaitkus,
 2017-01-24
;
_cod_original_cell_volume        1588.783
_cod_original_sg_symbol_H-M      'R 3 m'
_cod_original_formula_sum
'Na.814 K.014 Ca.009 Ti.03 Cr.006 Fe.612 Mn.003 Mg2.274 Al6.078 Si6 B3 O34'
_cod_database_code               9001513
Synthesis, stability, and properties of Al2SiO4(OH)2: A fully hydrated analogue of topaz
Wunder, B.; Rubie, D. C.; Ross, C. R.; Medenbach, O.; Seifert, F.; Schreyer, W.; American Mineralogist 78 (1993) 285–297; doi:

data_9001514
_publ_section_title
;
 Synthesis, stability, and properties of Al2SiO4(OH)2: A fully hydrated
 analogue of topaz
;
_journal_name_full               'American Mineralogist'
_journal_page_first              285
_journal_page_last               297
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum            'Al2 H2 O6 Si'
_chemical_name_mineral           Topaz
_space_group_IT_number           62
_symmetry_space_group_name_Hall  '-P 2c 2ab'
_symmetry_space_group_name_H-M   'P b n m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   4.7238
_cell_length_b                   8.9473
_cell_length_c                   8.3900
_cell_volume                     354.605
_database_code_amcsd             0001552
_exptl_crystal_density_diffrn    3.373
_cod_original_cell_volume        354.606
_cod_original_formula_sum        'Al2 Si O6 H2'
_cod_database_code               9001514
The atomic arrangement of bastnasite-(Ce), Ce(CO3)F, and structural elements of synchysite-(Ce), rontgenite-(Ce), and parisite-(Ce)
Ni, Y.; Hughes, J. M.; Mariano, A. N.; American Mineralogist 78 (1993) 415–418; doi:

data_9001515
_publ_section_title
;The atomic arrangement of bastnasite-(Ce), Ce(CO3)F, and structural elements
 of synchysite-(Ce), rontgenite-(Ce), and parisite-(Ce)
;
_journal_name_full               'American Mineralogist'
_journal_page_first              415
_journal_page_last               418
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum            'C Ce F O3'
_chemical_name_mineral           Bastnasite-(Ce)
_space_group_IT_number           190
_symmetry_space_group_name_Hall  'P -6c -2c'
_symmetry_space_group_name_H-M   'P -6 2 c'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   7.1175
_cell_length_b                   7.1175
_cell_length_c                   9.7619
_cell_formula_units_Z            6
_cell_volume                     428.272
_database_code_amcsd             0001553
_exptl_crystal_density_diffrn    5.098
_cod_original_formula_sum        'Ce C O3 F'
_cod_database_code               9001515
The redefinition of tengerite-(Y), Y2(CO3)3.2-3H2O, and its crystal structure
Miyawaki, R.; Kuriyama, J.; Nakai, I.; American Mineralogist 78 (1993) 425–432; doi:

data_9001516
_publ_section_title
'The redefinition of tengerite-(Y), Y2(CO3)3.2-3H2O, and its crystal structure'
_journal_name_full               'American Mineralogist'
_journal_page_first              425
_journal_page_last               432
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum            'C3 H2 O11 Y2'
_chemical_name_mineral           Tengerite-(Y)
_space_group_IT_number           36
_symmetry_space_group_name_Hall  'B -2 -2b'
_symmetry_space_group_name_H-M   'B b 21 m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.078
_cell_length_b                   9.157
_cell_length_c                   15.114
_cell_volume                     841.189
_database_code_amcsd             0001554
_exptl_crystal_density_diffrn    3.094
_cod_original_cell_volume        841.188
_cod_original_formula_sum        'Y2 C3 O11 H2'
_cod_database_code               9001516
Povondraite, a redefinition of the tourmaline ferridravite Note: Atomic parameters updated by Grice on 11/20/2001.
Grice, J. D.; Ercit, T. S.; Hawthorne, F. C.; American Mineralogist 78 (1993) 433–436; doi:

data_9001517
_publ_section_title
;
 Povondraite, a redefinition of the tourmaline ferridravite
 Note: Atomic parameters updated by Grice on 11/20/2001.
;
_journal_name_full               'American Mineralogist'
_journal_page_first              433
_journal_page_last               436
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum            'B3 Fe9 H1.998 Na O31 Si6'
_chemical_name_mineral           Povondraite
_space_group_IT_number           160
_symmetry_space_group_name_Hall  'R 3 -2"'
_symmetry_space_group_name_H-M   'R 3 m :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   16.186
_cell_length_b                   16.186
_cell_length_c                   7.444
_cell_formula_units_Z            3
_cell_volume                     1688.947
_exptl_crystal_density_diffrn    3.612
_cod_original_sg_symbol_H-M      'R 3 m'
_cod_original_formula_sum        'Na Fe9 B3 Si6 O31 H1.998'
_cod_database_code               9001517
On the role of Al-Si ordering in the cubic-tetragonal phase transition of leucite Sample is Disordered
Dove, M. T.; Cool, T.; Palmer, D. C.; Putnis, A.; Salje, E. K. H.; Winkler, B.; American Mineralogist 78 (1993) 486–492; doi:

data_9001518
_publ_section_title
;
 On the role of Al-Si ordering in the cubic-tetragonal phase transition of
 leucite
 Sample is Disordered
;
_journal_name_full               'American Mineralogist'
_journal_page_first              486
_journal_page_last               492
_journal_volume                  78
_journal_year                    1993
_chemical_formula_sum            'Al K O6 Si2'
_chemical_name_mineral           Leucite
_space_group_IT_number           88
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   12.988
_cell_length_b                   12.988
_cell_length_c                   13.800
_cell_formula_units_Z            16
_cell_volume                     2327.896
_database_code_amcsd             0001556
_exptl_crystal_density_diffrn    2.491
_cod_original_sg_symbol_H-M      'I 41/a'
_cod_original_formula_sum        'K (Si2 Al) O6'
_cod_database_code               9001518