LMucko/crystallography-open-database huggingface dataset:
The Structure of the Hypophosphite Group as Determined from the Crystal Lattice of Ammonium Hypophosphite _cod_database_code 1010304
Zachariasen, W.; Mooney, R.; Journal of Chemical Physics 2 (1934) 34–37; doi:10.1063/1.1749354

data_9016651
_publ_section_title
;
 The Structure of the Hypophosphite Group as Determined from the Crystal
 Lattice of Ammonium Hypophosphite
 _cod_database_code 1010304
;
_journal_name_full               'Journal of Chemical Physics'
_journal_page_first              34
_journal_page_last               37
_journal_paper_doi               10.1063/1.1749354
_journal_volume                  2
_journal_year                    1934
_chemical_formula_sum            'H6 N O2 P'
_space_group_IT_number           67
_symmetry_space_group_name_Hall  '-A 2b 2b'
_symmetry_space_group_name_H-M   'A b m m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   3.98
_cell_length_b                   7.57
_cell_length_c                   11.47
_cell_volume                     345.575
_database_code_amcsd             0017230
_exptl_crystal_density_diffrn    1.518
_cod_duplicate_entry             1010304
_cod_original_formula_sum        'N P O2 H2'
_cod_database_code               9016651
_amcsd_formula_title             'H6 N O2 P'
Crystal chemistry of RE(CO3)OH
Tahara, T.; Nakai, I.; Miyawaki, R.; Matsubara, S.; Zeitschrift fur Kristallographie 222 (2007) 326–334; doi:

data_9016652
_publ_section_title
;
 Crystal chemistry of RE(CO3)OH
;
_journal_name_full               'Zeitschrift fur Kristallographie'
_journal_page_first              326
_journal_page_last               334
_journal_volume                  222
_journal_year                    2007
_chemical_compound_source        Synthetic
_chemical_formula_sum            'C H Dy O4'
_space_group_IT_number           19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.9813
_cell_length_b                   4.8336
_cell_length_c                   8.4449
_cell_volume                     284.972
_database_code_amcsd             0019384
_exptl_crystal_density_diffrn    5.583
_cod_original_formula_sum        'Dy C (O4 H)'
_cod_database_code               9016652
_amcsd_formula_title             Dy(CO3)OH
Ordering of Fe and Mg in the tourmaline crystal structure: The correct formula Sample: Povondraite 144478
Grice, J. D.; Ercit, T. S.; Neues Jahrbuch fur Mineralogie, Abhandlungen 165 (1993) 245–266; doi:

data_9016653
_publ_section_title
;
 Ordering of Fe and Mg in the tourmaline crystal structure: The correct formula
 Sample: Povondraite 144478
;
_journal_name_full               'Neues Jahrbuch fur Mineralogie, Abhandlungen'
_journal_page_first              245
_journal_page_last               266
_journal_volume                  165
_journal_year                    1993
_chemical_compound_source        'San Francisco mine, Villa Tu nari, Bolivia'
_chemical_formula_sum
'Al0.32 B3.06 Fe6.82 H3.3 K0.26 Mg1.85 Na0.79 O31 Si5.94 V0.01'
_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_volume                     1688.947
_database_code_amcsd             0018783
_exptl_crystal_density_diffrn    3.429
_cod_original_sg_symbol_H-M      'R 3 m'
_cod_original_formula_sum
'Na.79 K.26 Mg1.85 Fe6.82 V.01 Al.32 Si5.94 B3.06 O31 H3.3'
_cod_database_code               9016653
_cell_formula_units_Z 3
On the solid solubility and structural properties of PdAs2-xSbx, PtP2-xAsx, PtP2-xSbx, PtP2-xBix, PtAs2-xSbx, PtAs2-xBix, PtSb2-xBix, Pdl-mPtmAs2, Pdl-mPtmSb2, Pdl-mAumSb2, and Ptl-mAumSb2
Furuseth, S.; Selte, K.; Kjekshus, A.; Acta Chemica Scandinavica 21 (1967) 527–536; doi:10.3891/acta.chem.scand.21-0527

data_9016654
_publ_section_title
;
 On the solid solubility and structural properties of PdAs2-xSbx,
 PtP2-xAsx, PtP2-xSbx, PtP2-xBix, PtAs2-xSbx, PtAs2-xBix, PtSb2-xBix,
 Pdl-mPtmAs2, Pdl-mPtmSb2, Pdl-mAumSb2, and Ptl-mAumSb2
;
_journal_name_full               'Acta Chemica Scandinavica'
_journal_page_first              527
_journal_page_last               536
_journal_paper_doi               10.3891/acta.chem.scand.21-0527
_journal_volume                  21
_journal_year                    1967
_chemical_compound_source        Synthetic
_chemical_formula_sum            'As2 Pt'
_chemical_name_mineral           Sperrylite
_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                   5.9665
_cell_length_b                   5.9665
_cell_length_c                   5.9665
_cell_formula_units_Z            4
_cell_volume                     212.402
_database_code_amcsd             0017684
_exptl_crystal_density_diffrn    10.786
_cod_original_sg_symbol_H-M      'P a 3'
_cod_original_formula_sum        'Pt As2'
_cod_database_code               9016654
The system Cu3AsS4 - Cu3SbS4 and investigations on normal tetrahedral structures Sample: Cu3As0.7Sb0.3S4
Pfitzner, A.; Bernert, T.; Zeitschrift fur Kristallographie 219 (2004) 20–26; doi:

data_9016655
_publ_section_title
;
 The system Cu3AsS4 - Cu3SbS4 and investigations on normal tetrahedral structures
 Sample: Cu3As0.7Sb0.3S4
;
_journal_name_full               'Zeitschrift fur Kristallographie'
_journal_page_first              20
_journal_page_last               26
_journal_volume                  219
_journal_year                    2004
_chemical_compound_source        Synthetic
_chemical_formula_sum            'As0.67 Cu3 S4 Sb0.33'
_chemical_name_mineral           Luzonite
_space_group_IT_number           121
_symmetry_space_group_name_Hall  'I -4 2'
_symmetry_space_group_name_H-M   'I -4 2 m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   5.315
_cell_length_b                   5.315
_cell_length_c                   10.536
_cell_formula_units_Z            2
_cell_volume                     297.634
_database_code_amcsd             0011107
_exptl_crystal_density_diffrn    4.567
_cod_original_formula_sum        '(Sb.33 As.67) Cu3 S4'
_cod_database_code               9016655
Kozulite, a Mn-rich alkali amphibole
Barkley, M. C.; Yang, H.; Downs, R. T.; Acta Crystallographica, Section E 66 (2010) i83–i83; doi:10.1107/S1600536810046015

data_9016656
_publ_section_title
;
 Kozulite, a Mn-rich alkali amphibole
;
_journal_issue                   12
_journal_name_full               'Acta Crystallographica, Section E'
_journal_page_first              i83
_journal_page_last               i83
_journal_paper_doi               10.1107/S1600536810046015
_journal_volume                  66
_journal_year                    2010
_chemical_compound_source
'Tanohata mine, Iwate Prefecture, Tohoku Region, Honshu Island, Japan'
_chemical_formula_sum
'Ca0.18 H2 K0.208 Mg2.305 Mn2.915 Na2.344 O24 Si8'
_chemical_name_mineral           Kozulite
_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                 104.034
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   9.9024
_cell_length_b                   18.1117
_cell_length_c                   5.2992
_cell_volume                     922.040
_database_code_amcsd             0017887
_exptl_crystal_density_diffrn    3.228
_cod_original_formula_sum
'K.208 Na2.344 Ca.18 Mn2.915 Mg2.305 Si8 O24 H2'
_cod_database_code               9016656
Synthesis and characterisation of reduced niobates [Sr1-xLnxNb2O6, Ln = La, Nd]
Istomin, S. Y.; D'yachenko, O. G.; Antipov, E. V.; Svensson, G.; Nygren, M.; Materials Research Bulletin 29 (1994) 743–749; doi:10.1016/0025-5408(94)90199-6

data_9016657
_publ_section_title
;
 Synthesis and characterisation of reduced niobates [Sr1-xLnxNb2O6, Ln = La, Nd]
;
_journal_name_full               'Materials Research Bulletin'
_journal_page_first              743
_journal_page_last               749
_journal_paper_doi               10.1016/0025-5408(94)90199-6
_journal_volume                  29
_journal_year                    1994
_chemical_compound_source        Synthetic
_chemical_formula_sum            'La0.2 Nb2 O6 Sr0.8'
_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                   11.042
_cell_length_b                   7.665
_cell_length_c                   5.584
_cell_formula_units_Z            4
_cell_volume                     472.613
_database_code_amcsd             0018964
_exptl_crystal_density_diffrn    5.336
_cod_original_formula_sum        '(Sr.8 La.2) Nb2 O6'
_cod_database_code               9016657
_amcsd_formula_title             Sr0.8La0.2Nb2O6
Compressibility and thermal expansion of hydrous ringwoodite with 2.5(3) wt% H2O Note: T = 143 K
Ye, Y.; Brown, D. A.; Smyth, J. R.; Panero, W. R.; Jacobsen, S. D.; Chang, Y. Y.; Townsend, J. P.; Thomas, S. M.; Hauri, E. H.; Dera, P.; Frost, D. J.; American Mineralogist 97 (2012) 573–582; doi:10.2138/am.2012.4010

data_9016658
_publ_section_title
;
 Compressibility and thermal expansion of hydrous ringwoodite with 2.5(3) wt% H2O
 Note: T = 143 K
;
_journal_name_full               'American Mineralogist'
_journal_page_first              573
_journal_page_last               582
_journal_paper_doi               10.2138/am.2012.4010
_journal_volume                  97
_journal_year                    2012
_chemical_compound_source        Synthetic
_chemical_formula_sum            'Mg1.96 O4 Si'
_chemical_name_mineral           Ringwoodite
_space_group_IT_number           227
_symmetry_space_group_name_Hall  '-F 4vw 2vw 3'
_symmetry_space_group_name_H-M   'F d -3 m :2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   8.0746
_cell_length_b                   8.0746
_cell_length_c                   8.0746
_cell_formula_units_Z            8
_cell_volume                     526.457
_database_code_amcsd             0018824
_exptl_crystal_density_diffrn    3.526
_cod_original_sg_symbol_H-M      'F d 3 m'
_cod_original_formula_sum        'Mg1.96 Si O4'
_cod_database_code               9016658
Bobdownsite, a new mineral species from Big Fish River, Yukon, Canada, and its structural relationship with whitlockite-type compounds Sample number R050109
Tait, K. T.; Barkley, M. C.; Thompson, R. M.; Origlieri, M. J.; Evans, S. H.; Prewitt, C. T.; Yang, H.; The Canadian Mineralogist 49 (2011) 1065–1078; doi:10.3749/canmin.49.4.1065

data_9016659
_publ_section_title
;
 Bobdownsite, a new mineral species from Big Fish River, Yukon, Canada,
 and its structural relationship with whitlockite-type compounds
 Sample number R050109
;
_journal_name_full               'The Canadian Mineralogist'
_journal_page_first              1065
_journal_page_last               1078
_journal_paper_doi               10.3749/canmin.49.4.1065
_journal_volume                  49
_journal_year                    2011
_chemical_compound_source        'Big Fish River, Yukon Territory, Canada'
_chemical_formula_sum            'Al0.11 Ca8.76 F Fe0.17 Mg0.72 Na0.24 O27 P7'
_chemical_name_mineral           Bobdownsite
_space_group_IT_number           161
_symmetry_space_group_name_Hall  'R 3 -2"c'
_symmetry_space_group_name_H-M   'R 3 c :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   10.3224
_cell_length_b                   10.3224
_cell_length_c                   37.0700
_cell_formula_units_Z            6
_cell_volume                     3420.697
_database_code_amcsd             0018921
_exptl_crystal_density_diffrn    3.071
_cod_original_sg_symbol_H-M      'R 3 c'
_cod_original_formula_sum        'Ca8.76 Na.24 Mg.72 Fe.17 Al.11 P7 O27 F'
_cod_database_code               9016659
A trivalent vanadium monophosphate with a tunnel structure: Cd3V4(PO4)6 _cod_database_code 1001600
Boudin, S.; Grandin, A.; Borel, M.; Leclaire, A.; Raveau, B.; Journal of Solid State Chemistry 110 (1994) 43–49; doi:10.1006/jssc.1994.1133

data_9016660
_publ_section_title
;
 A trivalent vanadium monophosphate with a tunnel structure: Cd3V4(PO4)6
 _cod_database_code 1001600
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              43
_journal_page_last               49
_journal_paper_doi               10.1006/jssc.1994.1133
_journal_volume                  110
_journal_year                    1994
_chemical_formula_sum            'Cd1.5 O12 P3 V2'
_space_group_IT_number           15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 115.66
_cell_angle_gamma                90
_cell_length_a                   12.446
_cell_length_b                   12.547
_cell_length_c                   6.487
_cell_formula_units_Z            4
_cell_volume                     913.106
_database_code_amcsd             0013807
_exptl_crystal_density_diffrn    4.040
_cod_duplicate_entry             1001600
_cod_original_formula_sum        'Cd1.5 V2 P3 O12'
_cod_database_code               9016660
_amcsd_formula_title             Cd3V4(PO4)6
Proprietes d'echanges d'ions de quelques oxydes ternaires de type pyrochlore: les pyrochlores H1+x(H2O)Ta1+xW1-xO6 et NH4TaWO6 _cod_database_code 1001163
Hervieu, M.; Michel, C.; Raveau, B.; Bulletin de la Societe Chimique de France 1971 (1971) 3939–3943; doi:

data_9016661
_publ_section_title
;
 Proprietes d'echanges d'ions de quelques oxydes ternaires de type
 pyrochlore: les pyrochlores H1+x(H2O)Ta1+xW1-xO6 et NH4TaWO6
 _cod_database_code 1001163
;
_journal_name_full               'Bulletin de la Societe Chimique de France'
_journal_page_first              3939
_journal_page_last               3943
_journal_volume                  1971
_journal_year                    1971
_chemical_formula_sum            'O7 Ta W'
_space_group_IT_number           227
_symmetry_space_group_name_Hall  '-F 4vw 2vw 3'
_symmetry_space_group_name_H-M   'F d -3 m :2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   10.39
_cell_length_b                   10.39
_cell_length_c                   10.39
_cell_formula_units_Z            8
_cell_volume                     1121.622
_database_code_amcsd             0012101
_exptl_crystal_density_diffrn    5.647
_cod_duplicate_entry             1001163
_cod_original_sg_symbol_H-M      'F d 3 m'
_cod_original_formula_sum        '(Ta W) O7'
_cod_database_code               9016661
_amcsd_formula_title             'H3 O7 Ta W'
The crystal structure of samsonite, 2 Ag2S*MnS*Sb2S3
Hruskova, J.; Synecek, V.; Acta Crystallographica, Section B 25 (1969) 1004–1006; doi:10.1107/S0567740869003414

data_9016662
_publ_section_title
;
 The crystal structure of samsonite, 2 Ag2S*MnS*Sb2S3
;
_journal_issue                   5
_journal_name_full               'Acta Crystallographica, Section B'
_journal_page_first              1004
_journal_page_last               1006
_journal_paper_doi               10.1107/S0567740869003414
_journal_volume                  25
_journal_year                    1969
_chemical_compound_source        'Andreasberg, Harz, Germany'
_chemical_formula_sum            'Ag4 Mn S6 Sb2'
_chemical_name_mineral           Samsonite
_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                 92.68
_cell_angle_gamma                90
_cell_length_a                   10.31
_cell_length_b                   8.07
_cell_length_c                   6.62
_cell_formula_units_Z            2
_cell_volume                     550.193
_database_code_amcsd             0016151
_exptl_crystal_density_diffrn    5.567
_cod_original_formula_sum        'Ag4 Mn Sb2 S6'
_cod_database_code               9016662
Phosphate in Angra Dos Reis: Structure and composition of the Ca3(PO4)2 minerals
Dowty, E.; Earth and Planetary Science Letters 35 (1977) 347–351; doi:10.1016/0012-821X(77)90136-4

data_9016663
_publ_section_title
;
 Phosphate in Angra Dos Reis: Structure and composition of the Ca3(PO4)2 minerals
;
_journal_name_full               'Earth and Planetary Science Letters'
_journal_page_first              347
_journal_page_last               351
_journal_paper_doi               10.1016/0012-821X(77)90136-4
_journal_volume                  35
_journal_year                    1977
_chemical_compound_source        'Angra Dos Reis meteorite'
_chemical_formula_sum            'Ca9.45 Fe0.22 Mg0.78 O28 P7'
_chemical_name_mineral           Merrillite
_space_group_IT_number           161
_symmetry_space_group_name_Hall  'R 3 -2"c'
_symmetry_space_group_name_H-M   'R 3 c :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   10.362
_cell_length_b                   10.362
_cell_length_c                   37.106
_cell_formula_units_Z            6
_cell_volume                     3450.340
_database_code_amcsd             0018313
_exptl_crystal_density_diffrn    3.104
_cod_original_cell_volume        3450.341
_cod_original_sg_symbol_H-M      'R 3 c'
_cod_original_formula_sum        '(Mg.78 Fe.22) Ca9.45 P7 O28'
_cod_database_code               9016663
Rakovanite, Na3{H3[V10O28]}*15H2O, a new member of the pascoite family with a protonated decavanadate polyanion
Kampf, A. R.; Hughes, J. M.; Marty, J.; Gunter, M. E.; Nash, B.; The Canadian Mineralogist 49 (2011) 595–604; doi:10.3749/canmin.49.2.595

data_9016664
_publ_section_title
;
 Rakovanite, Na3{H3[V10O28]}*15H2O, a new member of the
 pascoite family with a protonated decavanadate polyanion
;
_journal_name_full               'The Canadian Mineralogist'
_journal_page_first              595
_journal_page_last               604
_journal_paper_doi               10.3749/canmin.49.2.595
_journal_volume                  49
_journal_year                    2011
_chemical_compound_source        Synthetic
_chemical_formula_sum            'H30 Na3 O43 V10'
_chemical_name_mineral           Rakovanite
_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                 106.242
_cell_angle_gamma                90
_cell_length_a                   12.0248
_cell_length_b                   17.121
_cell_length_c                   18.140
_cell_formula_units_Z            4
_cell_volume                     3585.550
_database_code_amcsd             0018383
_exptl_crystal_density_diffrn    2.402
_cod_original_formula_sum        'V10 Na3 O43 H30'
_cod_database_code               9016664
Distinct domains in "guarinite" from Monte Somma, Italy: Crystal structures and crystal chemistry Note: "Guarinite" Domain I
Bellezza, M.; Merlino, S.; Perchiazzi, N.; The Canadian Mineralogist 50 (2012) 531–548; doi:10.3749/canmin.50.2.531

data_9016665
_publ_section_title
;
 Distinct domains in "guarinite" from Monte Somma, Italy:
 Crystal structures and crystal chemistry
 Note: "Guarinite" Domain I
;
_journal_name_full               'The Canadian Mineralogist'
_journal_page_first              531
_journal_page_last               548
_journal_paper_doi               10.3749/canmin.50.2.531
_journal_volume                  50
_journal_year                    2012
_chemical_compound_source        'Monte Somma syenite, Italy'
_chemical_formula_sum            'Ca4.64 F3 Mn0.45 Na1.62 O15 Si4 Zr1.29'
_chemical_name_mineral           Hiortdahlite
_space_group_IT_number           2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_cell_angle_alpha                90.03
_cell_angle_beta                 109.63
_cell_angle_gamma                90.11
_cell_length_a                   10.973
_cell_length_b                   10.306
_cell_length_c                   7.367
_cell_formula_units_Z            2
_cell_volume                     784.696
_database_code_amcsd             0019216
_exptl_crystal_density_diffrn    3.280
_cod_original_formula_sum        'Ca4.64 Na1.62 Zr1.29 Mn.45 Si4 O15 F3'
_cod_database_code               9016665
The crystal structure of hydroxyl-chondrodite
Yamamoto, K.; Acta Crystallographica, Section B 33 (1977) 1481–1485; doi:10.1107/S0567740877006335

data_9016666
_publ_section_title
;
 The crystal structure of hydroxyl-chondrodite
;
_journal_name_full               'Acta Crystallographica, Section B'
_journal_page_first              1481
_journal_page_last               1485
_journal_paper_doi               10.1107/S0567740877006335
_journal_volume                  33
_journal_year                    1977
_chemical_compound_source        Synthetic
_chemical_formula_sum            'H2.3 Mg5 O10 Si2'
_chemical_name_mineral           Hydroxylchondrodite
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2xab'
_symmetry_space_group_name_H-M   'P 21/b 1 1'
_cell_angle_alpha                108.71
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   4.752
_cell_length_b                   10.350
_cell_length_c                   7.914
_cell_formula_units_Z            2
_cell_volume                     368.666
_database_code_amcsd             0018884
_exptl_crystal_density_diffrn    3.063
_cod_original_formula_sum        'Mg5 Si2 O10 H2.3'
_cod_database_code               9016666
The structure of the modifications of manganese oxide
Kondrashev, Y. D.; Zaslavskii, A. I.; Izvestiya Akademii Nauk SSSR 15 (1951) 179–186; doi:

data_9016667
_publ_section_title
;
 The structure of the modifications of manganese oxide
;
_journal_name_full               'Izvestiya Akademii Nauk SSSR'
_journal_page_first              179
_journal_page_last               186
_journal_volume                  15
_journal_year                    1951
_chemical_formula_sum            'Mn O2'
_space_group_IT_number           87
_symmetry_space_group_name_Hall  '-I 4'
_symmetry_space_group_name_H-M   'I 4/m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   9.815
_cell_length_b                   9.815
_cell_length_c                   2.847
_cell_formula_units_Z            8
_cell_volume                     274.264
_database_code_amcsd             0017792
_exptl_crystal_density_diffrn    4.211
_cod_original_cell_volume        274.263
_cod_database_code               9016667
_amcsd_formula_title             MnO2