LMucko/crystallography-open-database huggingface dataset:
From structure topology to chemical composition. IV. Titanium silicates: The orthorhombic polytype of nabalamprophyllite from Lovozero Massif, Kola Peninsula, Russia Note: polytype nabalamprophyllite-2O
Sokolova, E.; Hawthorne, F. C.; The Canadian Mineralogist 46 (2008) 1323–1331; doi:10.3749/canmin.46.5.1323

data_9016384
_publ_section_title
;
 From structure topology to chemical composition. IV. Titanium silicates:
 The orthorhombic polytype of nabalamprophyllite
 from Lovozero Massif, Kola Peninsula, Russia
 Note: polytype nabalamprophyllite-2O
;
_journal_name_full               'The Canadian Mineralogist'
_journal_page_first              1323
_journal_page_last               1331
_journal_paper_doi               10.3749/canmin.46.5.1323
_journal_volume                  46
_journal_year                    2008
_chemical_compound_source        'Lovozero Massif, Kola Peninsula, Russia'
_chemical_formula_sum
'Al0.03 Ba0.87 Ca0.02 F0.65 Fe0.11 H0.89 K0.2 Mg0.04 Mn0.4 Na2.84 Nb0.04 O17.35 Si4 Sr0.47 Ti2.82'
_chemical_name_mineral           Nabalamprophyllite
_space_group_IT_number           58
_symmetry_space_group_name_Hall  '-P 2n 2n'
_symmetry_space_group_name_H-M   'P n m n'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   19.564
_cell_length_b                   7.1173
_cell_length_c                   5.4144
_cell_volume                     753.917
_database_code_amcsd             0019470
_exptl_crystal_density_diffrn    3.552
_cod_original_formula_sum
'Ba.87 Sr.47 Na2.84 K.2 Ca.02 Ti2.82 Al.03 Fe.11 Nb.04 Mn.4 Mg.04 Si4 O17.35 F.65 H.89'
_cod_database_code               9016384
X-ray determination of electron distributions in forsterite, fayalite and tephroite
Fujino, K.; Sasaki, S.; Takeuchi, Y.; Sadanaga, R.; Acta Crystallographica, Section B 37 (1981) 513–518; doi:10.1107/S0567740881003506

data_9016385
_publ_section_title
;
 X-ray determination of electron distributions in forsterite, fayalite and tephroite
;
_journal_issue                   3
_journal_name_full               'Acta Crystallographica, Section B'
_journal_page_first              513
_journal_page_last               518
_journal_paper_doi               10.1107/S0567740881003506
_journal_volume                  37
_journal_year                    1981
_chemical_compound_source        Synthetic
_chemical_formula_sum            'Mg2 O4 Si'
_chemical_name_mineral           Forsterite
_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_length_a                   4.7534
_cell_length_b                   10.1902
_cell_length_c                   5.9783
_cell_formula_units_Z            4
_cell_volume                     289.577
_database_code_amcsd             0019694
_exptl_crystal_density_diffrn    3.227
_cod_original_formula_sum        'Mg2 Si O4'
_cod_database_code               9016385
Structure cristalline du bronze pseudo-quadratique K0.6FeF~3: Transition pyrochlore-quadratique pour les composes KMM'6
Hardy, A. M.; Hardy, A.; Ferey, G.; Acta Crystallographica, Section B 29 (1973) 1654–1658; doi:10.1107/S0567740873005200

data_9016386
_publ_section_title
;
 Structure cristalline du bronze pseudo-quadratique K0.6FeF~3:
 Transition pyrochlore-quadratique pour les composes KMM'6
;
_journal_issue                   8
_journal_name_full               'Acta Crystallographica, Section B'
_journal_page_first              1654
_journal_page_last               1658
_journal_paper_doi               10.1107/S0567740873005200
_journal_volume                  29
_journal_year                    1973
_chemical_formula_sum            'F15 Fe5 K3'
_space_group_IT_number           32
_symmetry_space_group_name_Hall  'P 2 -2ab'
_symmetry_space_group_name_H-M   'P b a 2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   12.750
_cell_length_b                   12.637
_cell_length_c                   3.986
_cell_formula_units_Z            2
_cell_volume                     642.231
_database_code_amcsd             0009482
_exptl_crystal_density_diffrn    3.524
_cod_original_formula_sum        'Fe5 K3 F15'
_cod_database_code               9016386
_amcsd_formula_title             K0.6FeF3
_cod_duplicate_entry 1000162
Structure of Mg[(UO2)(AsO4)]2*4H2O
Bachet, B.; Brassy, C.; Acta Crystallographica, Section C 47 (1991) 2013–2015; doi:10.1107/S0108270191003852

data_9016387
_publ_section_title
;
 Structure of Mg[(UO2)(AsO4)]2*4H2O
;
_journal_name_full               'Acta Crystallographica, Section C'
_journal_page_first              2013
_journal_page_last               2015
_journal_paper_doi               10.1107/S0108270191003852
_journal_volume                  47
_journal_year                    1991
_chemical_compound_source        'Talmessi mine, Iran'
_chemical_formula_sum            'As2 H8 Mg O16 U2'
_chemical_name_mineral           Seelite
_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                 99.65
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   18.207
_cell_length_b                   7.062
_cell_length_c                   6.661
_cell_volume                     844.338
_database_code_amcsd             0010264
_exptl_crystal_density_diffrn    3.596
_cod_original_formula_sum        'Mg U2 As2 O16 H8'
_cod_database_code               9016387
The role of the Sb3+ lone-electron pairs and Fe2+ coordination in the high-pressure behavior of berthierite Note: P = 0.0001 GPa the Baia Mare metallogenic area, Romania
Periotto, B.; Balic-Zunic T; Nestola, F.; The Canadian Mineralogist 50 (2012) 201–218; doi:10.3749/canmin.50.2.201

data_9016388
_publ_section_title
;
 The role of the Sb3+ lone-electron pairs and Fe2+ coordination in
 the high-pressure behavior of berthierite
 Note: P = 0.0001 GPa
 the Baia Mare metallogenic area, Romania
;
_journal_name_full               'The Canadian Mineralogist'
_journal_page_first              201
_journal_page_last               218
_journal_paper_doi               10.3749/canmin.50.2.201
_journal_volume                  50
_journal_year                    2012
_chemical_compound_source        'hydro-thermal vein-type deposit of Herja in'
_chemical_formula_sum            'Fe S4 Sb2'
_chemical_name_mineral           Berthierite
_space_group_IT_number           62
_symmetry_space_group_name_Hall  '-P 2c 2n'
_symmetry_space_group_name_H-M   'P n a m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   11.4164
_cell_length_b                   14.1705
_cell_length_c                   3.7632
_cell_formula_units_Z            4
_cell_volume                     608.796
_database_code_amcsd             0019205
_exptl_crystal_density_diffrn    4.665
_cod_original_formula_sum        'Fe Sb2 S4'
_cod_database_code               9016388
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 1001288
Choisnet, J.; Raveau, B.; Materials Research Bulletin 14 (1979) 1381–1389; doi:10.1016/0025-5408(79)90079-5

data_9016389
_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 1001288
;
_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 O2 Sn0.7 Zn0.4'
_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                   6.067
_cell_length_b                   6.067
_cell_length_c                   9.880
_cell_formula_units_Z            8
_cell_volume                     314.946
_database_code_amcsd             0014276
_exptl_crystal_density_diffrn    6.075
_cod_duplicate_entry             1001288
_cod_original_formula_sum        'Sn.7 Zn.4 Li.4 O2'
_cod_database_code               9016389
_amcsd_formula_title             'Li1.6 O8 Sn2.8 Zn1.6'
The structure of potassium dithionate K2 S2 O6 and the measurement of the integrated reflection from a small crystal _cod_database_code 1010613
Helwig, G.; Zeitschrift fur Kristallographie 83 (1932) 485–492; doi:

data_9016390
_publ_section_title
;
 The structure of potassium dithionate K2 S2 O6 and the
 measurement of the integrated reflection from a small crystal
 _cod_database_code 1010613
;
_journal_name_full               'Zeitschrift fur Kristallographie'
_journal_page_first              485
_journal_page_last               492
_journal_volume                  83
_journal_year                    1932
_chemical_formula_sum            'K O3 S'
_space_group_IT_number           150
_symmetry_space_group_name_Hall  'P 3 2"'
_symmetry_space_group_name_H-M   'P 3 2 1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   9.82
_cell_length_b                   9.82
_cell_length_c                   6.36
_cell_formula_units_Z            6
_cell_volume                     531.142
_database_code_amcsd             0017495
_exptl_crystal_density_diffrn    2.235
_cod_duplicate_entry             1010613
_cod_original_formula_sum        'O3 K S'
_cod_database_code               9016390
_amcsd_formula_title             'K2 O6 S2'
Linking structure and chemistry in the schorl-dravite series Sample Ru-T17-92
Bloodaxe, E. S.; Hughes, J. M.; Dyar, M. D.; Grew, E. S.; Guidotti, C. V.; American Mineralogist 84 (1999) 922–928; doi:

data_9016391
_publ_section_title
;
 Linking structure and chemistry in the schorl-dravite series
 Sample Ru-T17-92
;
_journal_name_full               'American Mineralogist'
_journal_page_first              922
_journal_page_last               928
_journal_volume                  84
_journal_year                    1999
_chemical_compound_source
'Noisy Brook gneiss, Roxbury, Oxford County, Maine, USA'
_chemical_formula_sum
'Al6.606 B3 Ca0.017 F0.106 Fe1.044 H3.041 K0.04 Mg1.242 Na0.533 O30.894 Si6 Ti0.084 V0.015'
_chemical_name_mineral           Oxy-schorl
_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                   15.935
_cell_length_b                   15.935
_cell_length_c                   7.164
_cell_volume                     1575.398
_database_code_amcsd             0002244
_exptl_crystal_density_diffrn    3.119
_cod_original_sg_symbol_H-M      'R 3 m'
_cod_original_formula_sum
'Na.533 Ca.017 K.04 Al6.606 Fe1.044 Ti.084 V.015 Mg1.242 Si6 B3 O30.894 F.106 H3.041'
_cod_database_code               9016391
Thermal expansion of alunite up to dehydroxylation and collapse of the crystal structure Note: T = 400 C
Zema, M.; Callegari, A. M.; Tarantino, S. C.; Gasparini, E.; Ghigna, P.; Mineralogical Magazine 76 (2012) 613–623; doi:10.1180/minmag.2012.076.3.12

data_9016392
_publ_section_title
;
 Thermal expansion of alunite up to dehydroxylation
 and collapse of the crystal structure
 Note: T = 400 C
;
_journal_name_full               'Mineralogical Magazine'
_journal_page_first              613
_journal_page_last               623
_journal_paper_doi               10.1180/minmag.2012.076.3.12
_journal_volume                  76
_journal_year                    2012
_chemical_compound_source        Hungary
_chemical_formula_sum            'Al2.892 H6 K0.876 Na0.071 O14 S2'
_chemical_name_mineral           Alunite
_space_group_IT_number           166
_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                   6.9897
_cell_length_b                   6.9897
_cell_length_c                   17.574
_cell_volume                     743.564
_database_code_amcsd             0018988
_exptl_crystal_density_diffrn    2.734
_cod_original_sg_symbol_H-M      'R -3 m'
_cod_original_formula_sum        'K.876 Na.071 Al2.892 S2 O14 H6'
_cod_database_code               9016392
Two Polymorphous Lithium Stannoferrites LiFeSnO4: A Ramsdellite- Type and a Hexagonal Close-Packed Structure _cod_database_code 1001219
Choisnet, J.; Hervieu, M.; Raveau, B.; Tarte, P.; Journal of Solid State Chemistry 40 (1981) 344–351; doi:10.1016/0022-4596(81)90401-1

data_9016393
_publ_section_title
;
 Two Polymorphous Lithium Stannoferrites LiFeSnO4: A Ramsdellite-
 Type and a Hexagonal Close-Packed Structure
 _cod_database_code 1001219
;
_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              344
_journal_page_last               351
_journal_paper_doi               10.1016/0022-4596(81)90401-1
_journal_volume                  40
_journal_year                    1981
_chemical_formula_sum            'Fe0.5 Li0.5 O2 Sn0.5'
_space_group_IT_number           62
_symmetry_space_group_name_Hall  '-P 2n 2a'
_symmetry_space_group_name_H-M   'P m c n'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   3.066
_cell_length_b                   5.066
_cell_length_c                   9.874
_cell_formula_units_Z            4
_cell_volume                     153.366
_database_code_amcsd             0013458
_exptl_crystal_density_diffrn    5.316
_cod_duplicate_entry             1001219
_cod_original_formula_sum        'Li.5 (Fe.5 Sn.5) O2'
_cod_database_code               9016393
_amcsd_formula_title             LiFeSnO4
La struttura della cloromanganocalite
Bellanca, A.; Periodico di Mineralogia 16 (1947) 73–88; doi:

data_9016394
_publ_section_title
;
 La struttura della cloromanganocalite
;
_journal_name_full               'Periodico di Mineralogia'
_journal_page_first              73
_journal_page_last               88
_journal_volume                  16
_journal_year                    1947
_chemical_formula_sum            'Cl6 K4 Mn'
_chemical_name_mineral           Chlormanganokalite
_space_group_IT_number           167
_symmetry_space_group_name_Hall  '-P 3* 2n'
_symmetry_space_group_name_H-M   'R -3 c :R'
_cell_angle_alpha                89.53
_cell_angle_beta                 89.53
_cell_angle_gamma                89.53
_cell_length_a                   8.468
_cell_length_b                   8.468
_cell_length_c                   8.468
_cell_formula_units_Z            2
_cell_volume                     607.154
_database_code_amcsd             0019234
_exptl_crystal_density_diffrn    2.320
_cod_original_sg_symbol_H-M      'R -3 c'
_cod_original_formula_sum        'K4 Mn Cl6'
_cod_database_code               9016394
Structure of ammonium cyclo-hexaphosphate monohydrate _cod_database_code 1008850
Averbuch-Pouchot M; Acta Crystallographica, Section C 45 (1989) 539–540; doi:10.1107/S0108270188011990

data_9016395
_publ_section_title
;
 Structure of ammonium cyclo-hexaphosphate monohydrate
 _cod_database_code 1008850
;
_journal_name_full               'Acta Crystallographica, Section C'
_journal_page_first              539
_journal_page_last               540
_journal_paper_doi               10.1107/S0108270188011990
_journal_volume                  45
_journal_year                    1989
_chemical_formula_sum            'H24 N6 O19 P6'
_space_group_IT_number           148
_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                   15.445
_cell_length_b                   15.445
_cell_length_c                   7.553
_cell_formula_units_Z            3
_cell_volume                     1560.364
_database_code_amcsd             0016716
_exptl_crystal_density_diffrn    1.909
_cod_original_sg_symbol_H-M      'R -3'
_cod_original_formula_sum        'P6 O19 N6 H24'
_cod_database_code               9016395
_amcsd_formula_title             'H26 N6 O19 P6'
Hingganite-(Ce) and hingganite-(Y) from Tahara, Hirukawa-mura, Gifu Prefecture, Japan: The description on a new mineral species of the Ce-analogue of hingannite-(Y) with a refinement of the crystal structure of hingganite-(Y)
Miyawaki, R.; Matsubara, S.; Yokoyama, K.; Okamoto, A.; Journal of Mineralogical and Petrological Sciences 102 (2007) 1–7; doi:10.2465/jmps.051212

data_9016396
_publ_section_title
;
 Hingganite-(Ce) and hingganite-(Y) from Tahara, Hirukawa-mura, Gifu Prefecture, Japan:
 The description on a new mineral species of the Ce-analogue of hingannite-(Y)
 with a refinement of the crystal structure of hingganite-(Y)
;
_journal_name_full
'Journal of Mineralogical and Petrological Sciences'
_journal_page_first              1
_journal_page_last               7
_journal_paper_doi               10.2465/jmps.051212
_journal_volume                  102
_journal_year                    2007
_chemical_compound_source
'Tahara, Hirukawa-mura, Gifu Prefecture, Japan'
_chemical_formula_sum            'Be2 Ca0.3 Dy0.4 Fe0.242 O10 Si2 Y1.3'
_chemical_name_mineral           Hingganite-(Y)
_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                 90.342
_cell_angle_gamma                90
_cell_length_a                   9.8830
_cell_length_b                   7.6091
_cell_length_c                   4.7423
_cell_formula_units_Z            2
_cell_volume                     356.618
_database_code_amcsd             0019357
_exptl_crystal_density_diffrn    4.100
_cod_original_formula_sum        '(Y1.3 Dy.4 Ca.3) Si2 Be2 Fe.242 O10'
_cod_database_code               9016396
Eirikite, a new mineral species of the leifite group from the Langesundsfjord district, Norway
Larsen, A. O.; Kolitsch, U.; Gault, R. A.; Giester, G.; European Journal of Mineralogy 22 (2010) 875–880; doi:10.1127/0935-1221/2010/0022-2068

data_9016397
_publ_section_title
;
 Eirikite, a new mineral species of the leifite group from the Langesundsfjord district, Norway
;
_journal_name_full               'European Journal of Mineralogy'
_journal_page_first              875
_journal_page_last               880
_journal_paper_doi               10.1127/0935-1221/2010/0022-2068
_journal_volume                  22
_journal_year                    2010
_chemical_compound_source        'Langesundsfjord district, Norway'
_chemical_formula_sum            'Al3 Be2 F2 K0.983 Na6.017 O39 Si15'
_chemical_name_mineral           Eirikite
_space_group_IT_number           164
_symmetry_space_group_name_Hall  '-P 3 2"'
_symmetry_space_group_name_H-M   'P -3 m 1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            1
_cell_length_a                   14.386
_cell_length_b                   14.386
_cell_length_c                   4.873
_cell_volume                     873.388
_database_code_amcsd             0017881
_exptl_crystal_density_diffrn    2.584
_cod_original_formula_sum        'K.983 Na6.017 Be2 (Si15 Al3) O39 F2'
_cod_database_code               9016397
The crystal structure of ammonium hydrogen fluoride N H4 H F2 _cod_database_code 1010616
Pauling, L.; Zeitschrift fur Kristallographie 85 (1933) 380–391; doi:

data_9016398
_publ_section_title
;
 The crystal structure of ammonium hydrogen fluoride N H4 H F2
 _cod_database_code 1010616
;
_journal_name_full               'Zeitschrift fur Kristallographie'
_journal_page_first              380
_journal_page_last               391
_journal_volume                  85
_journal_year                    1933
_chemical_formula_sum            'F2 N'
_space_group_IT_number           53
_symmetry_space_group_name_Hall  '-P 2ab 2'
_symmetry_space_group_name_H-M   'P m a n'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   8.33
_cell_length_b                   8.14
_cell_length_c                   3.68
_cell_formula_units_Z            4
_cell_volume                     249.527
_database_code_amcsd             0017498
_exptl_crystal_density_diffrn    1.384
_cod_duplicate_entry             1010616
_cod_original_formula_sum        'N F2'
_cod_database_code               9016398
_amcsd_formula_title             'F2 H5 N'
Jacutingaite, Pt2HgSe3, a new platinum-group mineral species from the Caue iron-ore deposit, Itabira District, Minas Gerais, Brazil Localiy: the Caue iron-ore deposit, Itabira District, Minas Gerais, Brazil
Vymazalova, A.; Laufek, F.; Drabek, M.; Cabral, A. R.; Haloda, J.; Sidorinova, T.; Lehmann, B.; Galbiatti, H. F.; Drahokoupil, J.; The Canadian Mineralogist 50 (2012) 431–440; doi:10.3749/canmin.50.2.431

data_9016399
_publ_section_title
;
 Jacutingaite, Pt2HgSe3, a new platinum-group mineral species from
 the Caue iron-ore deposit, Itabira District, Minas Gerais, Brazil
 Localiy: the Caue iron-ore deposit, Itabira District, Minas Gerais, Brazil
;
_journal_name_full               'The Canadian Mineralogist'
_journal_page_first              431
_journal_page_last               440
_journal_paper_doi               10.3749/canmin.50.2.431
_journal_volume                  50
_journal_year                    2012
_chemical_formula_sum            'Hg Pt2 Se3'
_chemical_name_mineral           Jacutingaite
_space_group_IT_number           164
_symmetry_space_group_name_Hall  '-P 3 2"'
_symmetry_space_group_name_H-M   'P -3 m 1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   7.3477
_cell_length_b                   7.3477
_cell_length_c                   5.2955
_cell_formula_units_Z            2
_cell_volume                     285.897
_database_code_amcsd             0019200
_exptl_crystal_density_diffrn    9.614
_cod_original_formula_sum        'Pt2 Hg Se3'
_cod_database_code               9016399
New insights into the high-pressure polymorphism of SiO2 cristobalite Note: P = 3.5 GPa, data transformed from Dove et al (2000)
Dera, P.; Lazarz, J. D.; Prakapenka, V. B.; Barkley, M.; Downs, R. T.; Physics and Chemistry of Minerals 38 (2011) Online–first; doi:

data_9016400
_publ_section_title
;
 New insights into the high-pressure polymorphism of SiO2 cristobalite
 Note: P = 3.5 GPa, data transformed from Dove et al (2000)
;
_journal_name_full               'Physics and Chemistry of Minerals'
_journal_page_first              Online
_journal_page_last               first
_journal_volume                  38
_journal_year                    2011
_chemical_formula_sum            'O2 Si'
_chemical_name_mineral           'Cristobalite II'
_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                 121.0
_cell_angle_gamma                90
_cell_length_a                   8.011
_cell_length_b                   4.544
_cell_length_c                   8.890
_cell_formula_units_Z            8
_cell_volume                     277.391
_database_code_amcsd             0018348
_exptl_crystal_density_diffrn    2.877
_cod_original_formula_sum        'Si O2'
_cod_database_code               9016400