LMucko/crystallography-open-database huggingface dataset:
The crystal structure of arapovite, U4+(Ca,Na)2(K1-x_x)[Si8O20],x~0.5, a new mineral species of the steacyite group from the Dara-i-Pioz moraine, Tien-Shan Mountains, Tajikistan
Uvarova, Y. A.; Sokolova, E. V.; Hawthorne, F. C.; Agakhanov, A. A.; Pautov, L. A.; The Canadian Mineralogist 42 (2004) 1005–1011; doi:10.2113/gscanmin.42.4.1005

data_9014130
_publ_section_title
;
 The crystal structure of arapovite, U4+(Ca,Na)2(K1-x_x)[Si8O20],x~0.5,
 a new mineral species of the steacyite group from the Dara-i-Pioz moraine,
 Tien-Shan Mountains, Tajikistan
;
_journal_name_full               'The Canadian Mineralogist'
_journal_page_first              1005
_journal_page_last               1011
_journal_paper_doi               10.2113/gscanmin.42.4.1005
_journal_volume                  42
_journal_year                    2004
_chemical_compound_source
'Dara-i-Pioz moraine, Tien-Shan Mountains, Tajikistan'
_chemical_formula_sum
'Ba0.02 Ca1.34 Ce0.02 Dy0.02 K0.52 Na0.68 Nd0.04 O20 Pr0.01 Si8 Sm0.01 Th0.26 U0.59'
_chemical_name_mineral           Arapovite
_space_group_IT_number           124
_symmetry_space_group_name_Hall  '-P 4 2c'
_symmetry_space_group_name_H-M   'P 4/m c c'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.5505
_cell_length_b                   7.5505
_cell_length_c                   14.7104
_cell_volume                     838.641
_database_code_amcsd             0005955
_exptl_crystal_density_diffrn    3.376
_cod_original_formula_sum
'U.59 Th.26 Ca1.34 Dy.02 Sm.01 Pr.01 Na.68 Nd.04 Ce.02 Ba.02 K.52 Si8 O20'
_cod_database_code               9014130
The composition and crystal structure of nickel nitrate hexammoniate _cod_database_code 1010626
Wyckoff, R.; Journal of the American Chemical Society 44 (1922) 1260–1266; doi:10.1021/ja01427a010

data_9014131
_publ_section_title
;
 The composition and crystal structure of nickel nitrate hexammoniate
 _cod_database_code 1010626
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1260
_journal_page_last               1266
_journal_paper_doi               10.1021/ja01427a010
_journal_volume                  44
_journal_year                    1922
_chemical_formula_sum            'N8 Ni O6'
_space_group_IT_number           205
_symmetry_space_group_name_Hall  '-P 2ac 2ab 3'
_symmetry_space_group_name_H-M   'P a -3'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   10.96
_cell_length_b                   10.96
_cell_length_c                   10.96
_cell_formula_units_Z            4
_cell_volume                     1316.533
_database_code_amcsd             0017508
_exptl_crystal_density_diffrn    1.346
_cod_duplicate_entry             1010626
_cod_original_sg_symbol_H-M      'P a 3'
_cod_original_formula_sum        'Ni N8 O6'
_cod_database_code               9014131
_amcsd_formula_title             'H18 N8 Ni O6'
Crystal structure of beta-uranophane from the Transbaikal region and its relation to the structure of the alpha modification
Barinova, A. V.; Rastsvetaeva, R. K.; Sidorenko, G. A.; Verin, I. A.; Crystallography Reports 48 (2003) 12–15; doi:10.1134/1.1541735

data_9014132
_publ_section_title
;
 Crystal structure of beta-uranophane from the Transbaikal region and
 its relation to the structure of the alpha modification
;
_journal_name_full               'Crystallography Reports'
_journal_page_first              12
_journal_page_last               15
_journal_paper_doi               10.1134/1.1541735
_journal_volume                  48
_journal_year                    2003
_chemical_compound_source        'Transbaikal region, Russia'
_chemical_formula_sum            'Ca H12 O17 Si2 U2'
_chemical_name_mineral           Uranophane-beta
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_cell_angle_alpha                90
_cell_angle_beta                 91.399
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.947
_cell_length_b                   15.465
_cell_length_c                   6.626
_cell_volume                     1428.738
_database_code_amcsd             0018734
_exptl_crystal_density_diffrn    3.981
_cod_original_formula_sum        'Ca U2 Si2 O17 H12'
_cod_database_code               9014132
Synthetic B-rich olenite: Correlations of single-crystal structural data Note: sample ElbK-9
Ertl, A.; Giester, G.; Ludwig, T.; Meyer, H. P.; Rossman, G. R.; American Mineralogist 97 (2012) 1591–1597; doi:10.2138/am.2012.4060

data_9014133
_publ_section_title
;
 Synthetic B-rich olenite: Correlations of single-crystal structural data
 Note: sample ElbK-9
;
_journal_name_full               'American Mineralogist'
_journal_page_first              1591
_journal_page_last               1597
_journal_paper_doi               10.2138/am.2012.4060
_journal_volume                  97
_journal_year                    2012
_chemical_compound_source        'synthetic at 500 C'
_chemical_formula_sum            'Al8.55 B3.906 H3 Li0.45 Na0.79 O31 Si5.094'
_chemical_name_mineral           Olenite
_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_formula_units_Z            3
_cell_length_a                   15.746
_cell_length_b                   15.746
_cell_length_c                   7.075
_cell_volume                     1519.139
_database_code_amcsd             0019526
_exptl_crystal_density_diffrn    3.070
_cod_original_sg_symbol_H-M      'R 3 m'
_cod_original_formula_sum        'Na.79 Al8.55 Li.45 B3.906 Si5.094 H3 O31'
_cod_database_code               9014133
Das Gitter des Ammoniaks. _cod_database_code 1010490
Mark, H.; Pohland, E.; Zeitschrift fur Kristallographie 61 (1925) 532–537; doi:

data_9014134
_publ_section_title
;
 Das Gitter des Ammoniaks.
 _cod_database_code 1010490
;
_journal_name_full               'Zeitschrift fur Kristallographie'
_journal_page_first              532
_journal_page_last               537
_journal_volume                  61
_journal_year                    1925
_chemical_formula_sum            'H3 N'
_space_group_IT_number           198
_symmetry_space_group_name_Hall  'P 2ac 2ab 3'
_symmetry_space_group_name_H-M   'P 21 3'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.193
_cell_length_b                   5.193
_cell_length_c                   5.193
_cell_volume                     140.041
_database_code_amcsd             0017406
_exptl_crystal_density_diffrn    0.664
_cod_duplicate_entry             1010490
_cod_original_formula_sum        N
_cod_database_code               9014134
_amcsd_formula_title             'H3 N'
Spin-Glass Behavior in Sr2 Fe Ru O6 and Ba La Ni Ru O6: A Comparison with Antiferromagnetic Ba La Zn Ru O6 _cod_database_code 1001400
Battle, P.; Gibb, T.; Jones, C.; Studer, F.; Journal of Solid State Chemistry 78 (1989) 281–293; doi:10.1016/0022-4596(89)90109-6

data_9014135
_publ_section_title
;
 Spin-Glass Behavior in Sr2 Fe Ru O6 and Ba La Ni Ru O6: A
 Comparison with Antiferromagnetic Ba La Zn Ru O6
 _cod_database_code 1001400
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              281
_journal_page_last               293
_journal_paper_doi               10.1016/0022-4596(89)90109-6
_journal_volume                  78
_journal_year                    1989
_chemical_formula_sum            'Fe0.5 O3 Ru0.5 Sr'
_space_group_IT_number           15
_symmetry_space_group_name_Hall  '-I 2yc'
_symmetry_space_group_name_H-M   'I 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 90.13
_cell_angle_gamma                90
_cell_length_a                   5.5092
_cell_length_b                   5.5138
_cell_length_c                   7.8752
_cell_formula_units_Z            4
_cell_volume                     239.221
_database_code_amcsd             0013641
_exptl_crystal_density_diffrn    5.944
_cod_duplicate_entry             1001400
_cod_original_formula_sum        'Sr (Fe.5 Ru.5) O3'
_cod_database_code               9014135
_amcsd_formula_title             'Fe O6 Ru Sr2'
Crystal Structure of Lithium Hydroxide Monohydrate _cod_database_code 1010456
Pepinsky, R.; Zeitschrift fur Kristallographie 102 (1940) 119–140; doi:

data_9014136
_publ_section_title
;
 Crystal Structure of Lithium Hydroxide Monohydrate
 _cod_database_code 1010456
;
_journal_name_full               'Zeitschrift fur Kristallographie'
_journal_page_first              119
_journal_page_last               140
_journal_volume                  102
_journal_year                    1940
_chemical_formula_sum            'Li O2'
_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                 110.3
_cell_angle_gamma                90
_cell_length_a                   7.37
_cell_length_b                   8.26
_cell_length_c                   3.19
_cell_formula_units_Z            4
_cell_volume                     182.133
_database_code_amcsd             0017376
_exptl_crystal_density_diffrn    1.420
_cod_duplicate_entry             1010456
_cod_database_code               9014136
_amcsd_formula_title             'H3 Li O2'
The mixed valent molybdenum monophosphate RbMo2P2O10.(1-x)H2O: an intersecting tunnel structure isotypic with leucophosphite _cod_database_code 1001614
Leclaire, A.; Borel, M.; Grandin, A.; Raveau, B.; Journal of Solid State Chemistry 108 (1994) 177–183; doi:10.1006/jssc.1994.1027

data_9014137
_publ_section_title
;
 The mixed valent molybdenum monophosphate RbMo2P2O10.(1-x)H2O:
 an intersecting tunnel structure isotypic with leucophosphite
 _cod_database_code 1001614
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              177
_journal_page_last               183
_journal_paper_doi               10.1006/jssc.1994.1027
_journal_volume                  108
_journal_year                    1994
_chemical_formula_sum            'Mo4 O21.8 P4 Rb2'
_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                 128.81
_cell_angle_gamma                90
_cell_length_a                   9.789
_cell_length_b                   9.752
_cell_length_c                   12.347
_cell_formula_units_Z            2
_cell_volume                     918.456
_database_code_amcsd             0013791
_exptl_crystal_density_diffrn    3.715
_cod_duplicate_entry             1001614
_cod_original_formula_sum        'Mo4 P4 Rb2 O21.8'
_cod_database_code               9014137
_amcsd_formula_title             'H1.8 Mo2 O10.9 P2 Rb'
Crystal structures of shlykovite and cryptophyllite: comparative crystal chemistry of phyllosilicate minerals of the mountainite family
Zubkova, N. V.; Filinchuk, Y. E.; Pekov, I. V.; Pushcharovsky, D. Y.; Gobechiya, E. R.; European Journal of Mineralogy 22 (2010) 547–555; doi:10.1127/0935-1221/2010/0022-2041

data_9014138
_publ_section_title
;
 Crystal structures of shlykovite and cryptophyllite: comparative crystal
 chemistry of phyllosilicate minerals of the mountainite family
;
_journal_name_full               'European Journal of Mineralogy'
_journal_page_first              547
_journal_page_last               555
_journal_paper_doi               10.1127/0935-1221/2010/0022-2041
_journal_volume                  22
_journal_year                    2010
_chemical_compound_source
'Mount Rasvumchorr, Khibiny alkaline intrusion, Kola Peninsula, Russia'
_chemical_formula_sum            'Ca H10 K2 O15 Si4'
_chemical_name_mineral           Cryptophyllite
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_cell_angle_alpha                90
_cell_angle_beta                 94.680
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.4934
_cell_length_b                   6.9919
_cell_length_c                   32.087
_cell_volume                     1451.931
_database_code_amcsd             0017557
_exptl_crystal_density_diffrn    2.199
_cod_original_cell_volume        1451.932
_cod_original_formula_sum        'K2 Ca Si4 O15 H10'
_cod_database_code               9014138
Une nouvelle structure hexagonale compacte ordonne: les oxydes (Sn - x3)octa (M - Li)tetra O8 avec X = Sn(Ti)+ M + Li et M = Zn, Mg _cod_database_code 1001289
Choisnet, J.; Raveau, B.; Materials Research Bulletin 14 (1979) 1381–1389; doi:10.1016/0025-5408(79)90079-5

data_9014139
_publ_section_title
;
 Une nouvelle structure hexagonale compacte ordonne: les oxydes
 (Sn - x3)octa (M - Li)tetra O8 avec X = Sn(Ti)+ M + Li et M = Zn, Mg
 _cod_database_code 1001289
;
_journal_name_full               'Materials Research Bulletin'
_journal_page_first              1381
_journal_page_last               1389
_journal_paper_doi               10.1016/0025-5408(79)90079-5
_journal_volume                  14
_journal_year                    1979
_chemical_formula_sum            'Li0.4 Mg0.4 O2 Sn0.7'
_space_group_IT_number           186
_symmetry_space_group_name_Hall  'P 6c -2c'
_symmetry_space_group_name_H-M   'P 63 m c'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   6.077
_cell_length_b                   6.077
_cell_length_c                   9.829
_cell_formula_units_Z            8
_cell_volume                     314.354
_database_code_amcsd             0014277
_exptl_crystal_density_diffrn    5.392
_cod_duplicate_entry             1001289
_cod_original_formula_sum        'Sn.7 Mg.4 Li.4 O2'
_cod_database_code               9014139
_amcsd_formula_title             'Li1.6 Mg1.6 O8 Sn2.8'
Structure refinement of GeO2 polymorphs at high pressures and temperatures by energy-dispersive spectra of powder diffraction Note: P = 2.9 GPa T = 493 K Note: quartz structure
Yamanaka, T.; Ogata, K.; Journal of Applied Crystallography 24 (1991) 111–118; doi:10.1107/S0021889890011153

data_9014140
_publ_section_title
;
 Structure refinement of GeO2 polymorphs at high pressures and
 temperatures by energy-dispersive spectra of powder diffraction
 Note: P = 2.9 GPa T = 493 K
 Note: quartz structure
;
_journal_name_full               'Journal of Applied Crystallography'
_journal_page_first              111
_journal_page_last               118
_journal_paper_doi               10.1107/S0021889890011153
_journal_volume                  24
_journal_year                    1991
_chemical_compound_source        Synthetic
_chemical_formula_sum            'Ge O2'
_symmetry_space_group_name_H-M   'P 32 2 1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   4.9097
_cell_length_b                   4.9097
_cell_length_c                   5.6249
_cell_formula_units_Z            3
_cell_volume                     117.424
_database_code_amcsd             0019060
_exptl_crystal_density_diffrn    4.438
_cod_database_code               9014140
_amcsd_formula_title             GeO2
Etude crystallographique de sulfures de terres rares et de sodium _cod_database_code 1008969
Ballestracci, R.; Bertaut, E.; Bulletin de la Societe Francaise de Mineralogie et de Cristallographie 87 (1964) 512–517; doi:

data_9014141
_publ_section_title
;
 Etude crystallographique de sulfures de terres rares et de sodium
 _cod_database_code 1008969
;
_journal_name_full
'Bulletin de la Societe Francaise de Mineralogie et de Cristallographie'
_journal_page_first              512
_journal_page_last               517
_journal_volume                  87
_journal_year                    1964
_chemical_formula_sum            'Ce0.5 Na0.5 S'
_space_group_IT_number           225
_symmetry_space_group_name_Hall  '-F 4 2 3'
_symmetry_space_group_name_H-M   'F m -3 m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   5.832
_cell_length_b                   5.832
_cell_length_c                   5.832
_cell_formula_units_Z            4
_cell_volume                     198.359
_database_code_amcsd             0016832
_exptl_crystal_density_diffrn    3.805
_cod_duplicate_entry             1008969
_cod_original_sg_symbol_H-M      'F m 3 m'
_cod_original_formula_sum        '(Na.5 Ce.5) S'
_cod_database_code               9014141
_amcsd_formula_title             'Ce Na S2'
Oscillatory zoned liddicoatite from Anjanabonoina, central Madigascar. I. Crystal chemistry and structure by SREF and 11B and 27Al MAS NMR spectroscopy Sample: L7, disordered model
Lussier, A. J.; Abdu, Y.; Hawthorne, F. C.; Michaelis, V. K.; Aguiar, P. M.; Kroeker, S.; The Canadian Mineralogist 49 (2011) 63–88; doi:10.3749/canmin.49.1.63

data_9014142
_publ_section_title
;
 Oscillatory zoned liddicoatite from Anjanabonoina, central Madigascar.
 I. Crystal chemistry and structure by SREF and 11B and 27Al MAS NMR spectroscopy
 Sample: L7, disordered model
;
_journal_name_full               'The Canadian Mineralogist'
_journal_page_first              63
_journal_page_last               88
_journal_paper_doi               10.3749/canmin.49.1.63
_journal_volume                  49
_journal_year                    2011
_chemical_compound_source        'Anjanabonoina, central Madagascar'
_chemical_formula_sum
'Al7.224 B3 Ca0.636 F0.708 Fe0.045 H3.291 Li1.593 Mg0.003 Mn0.135 Na0.282 O30.291 Pb0.02 Si6 Ti0.003'
_chemical_name_mineral           Fluor-liddicoatite
_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                   15.8363
_cell_length_b                   15.8363
_cell_length_c                   7.1040
_cell_formula_units_Z            3
_cell_volume                     1542.912
_database_code_amcsd             0018417
_exptl_crystal_density_diffrn    3.082
_cod_original_cell_volume        1542.911
_cod_original_sg_symbol_H-M      'R 3 m'
_cod_original_formula_sum
'Ca.636 Na.282 Pb.02 Ti.003 Al7.224 Fe.045 Mg.003 Mn.135 Li1.593 Si6 B3 F.708 O30.291 H3.291'
_cod_database_code               9014142
Isotypy in aktashite Cu6Hg3As4S12 and nowackiite Cu6Zn3As4S12
Nowacki, W.; Soviet Physics Crystallography 27 (1982) 26–27; doi:

data_9014143
_publ_section_title
;
 Isotypy in aktashite Cu6Hg3As4S12 and nowackiite Cu6Zn3As4S12
;
_journal_name_full               'Soviet Physics Crystallography'
_journal_page_first              26
_journal_page_last               27
_journal_volume                  27
_journal_year                    1982
_chemical_compound_source        'not given'
_chemical_formula_sum            'As4 Cu6 Hg3 S12'
_chemical_name_mineral           Aktashite
_space_group_IT_number           146
_symmetry_space_group_name_Hall  'R 3'
_symmetry_space_group_name_H-M   'R 3 :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   13.730
_cell_length_b                   13.730
_cell_length_c                   9.329
_cell_formula_units_Z            3
_cell_volume                     1523.024
_database_code_amcsd             0018891
_exptl_crystal_density_diffrn    5.454
_cod_original_sg_symbol_H-M      'R 3'
_cod_original_formula_sum        'Cu6 Hg3 As4 S12'
_cod_database_code               9014143
Crystal Structure of Cerium(III) Diammonium Polyphosphate (NH4)2Ce(PO3)5 _cod_database_code 1007093
Rzaigui, M.; Ariguib, K.; Averbuch-Pouchot M; Durif, A.; Journal of Solid State Chemistry 50 (1983) 240–246; doi:10.1016/0022-4596(83)90193-7

data_9014144
_publ_section_title
;
 Crystal Structure of Cerium(III) Diammonium Polyphosphate (NH4)2Ce(PO3)5
 _cod_database_code 1007093
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              240
_journal_page_last               246
_journal_paper_doi               10.1016/0022-4596(83)90193-7
_journal_volume                  50
_journal_year                    1983
_chemical_formula_sum            'Ce N2 O15 P5'
_space_group_IT_number           1
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_cell_angle_alpha                90.35
_cell_angle_beta                 107.50
_cell_angle_gamma                90.28
_cell_length_a                   7.241
_cell_length_b                   13.314
_cell_length_c                   7.241
_cell_formula_units_Z            2
_cell_volume                     665.742
_database_code_amcsd             0013518
_exptl_crystal_density_diffrn    2.808
_cod_duplicate_entry             1007093
_cod_original_formula_sum        'Ce P5 O15 N2'
_cod_database_code               9014144
_amcsd_formula_title             (NH4)2Ce(PO3)5
Parameters in crystal structure. The mercurouos halides _cod_database_code 1011077
Havighurst, R.; Journal of the American Chemical Society 48 (1926) 2113–2131; doi:10.1021/ja01419a016

data_9014145
_publ_section_title
;
 Parameters in crystal structure. The mercurouos halides
 _cod_database_code 1011077
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              2113
_journal_page_last               2131
_journal_paper_doi               10.1021/ja01419a016
_journal_volume                  48
_journal_year                    1926
_chemical_formula_sum            'Br Hg'
_chemical_name_mineral           Kuzminite
_space_group_IT_number           136
_symmetry_space_group_name_Hall  '-P 4n 2n'
_symmetry_space_group_name_H-M   'P 42/m n m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   4.66
_cell_length_b                   4.66
_cell_length_c                   11.12
_cell_formula_units_Z            4
_cell_volume                     241.477
_database_code_amcsd             0017975
_exptl_crystal_density_diffrn    7.715
_cod_duplicate_entry             1011077
_cod_original_formula_sum        'Hg Br'
_cod_database_code               9014145
Native silver and its new structural modifications Note: sample DV-300, known as silver 4H
Novgorodova, M. I.; Gorshkov, A. I.; Mokhov, A. V.; International Geology Review 23 (1981) 485–494; doi:10.1080/00206818109455083

data_9014146
_publ_section_title
;
 Native silver and its new structural modifications
 Note: sample DV-300, known as silver 4H
;
_journal_name_full               'International Geology Review'
_journal_page_first              485
_journal_page_last               494
_journal_paper_doi               10.1080/00206818109455083
_journal_volume                  23
_journal_year                    1981
_chemical_compound_source        'northeast USSR'
_chemical_formula_sum            'Ag0.985 Cu0.005'
_chemical_name_mineral           Silver
_space_group_IT_number           194
_symmetry_space_group_name_Hall  '-P 6c 2c'
_symmetry_space_group_name_H-M   'P 63/m m c'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   2.88
_cell_length_b                   2.88
_cell_length_c                   9.62
_cell_formula_units_Z            2
_cell_volume                     69.102
_database_code_amcsd             0018575
_exptl_crystal_density_diffrn    5.124
_cod_original_formula_sum        'Ag.985 Cu.005'
_cod_database_code               9014146