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[½»Á÷] ¡¾ÇóÖú¡¿Al2SiO5

ÄÄλ´óÏÀÓÐICSDµÄÕʺţ¬Âé·³°ïæ²éÒ»¸öCIFÎļþ
ICSDºÅ        12687
¿óÎïÃû³Æ        Andalusite
»¯Ñ§Ãû³Æ        Aluminium Silicate Oxide
»¯Ñ§Ê½        Al2 Si O5       
ZÖµ        4
¿Õ¼äȺ        PNNM
a        7.7942(2)
b        7.8985(2)
c        5.559(2)
alpha        90.
beta        90.
gamma        90.
PDF¿¨ºÅ   39-376

       

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data_84613-ICSD
#?2002 by Fachinformationszentrum Karlsruhe, and the U.S. Secretary of
#Commerce on behalf of the United States. All rights reserved.
_database_code_ICSD 84613
_audit_creation_date 1999/01/19
_chemical_name_systematic 'Dialuminium Silicate Oxide'
_chemical_formula_structural 'Al2 (Si O4) O'
_chemical_formula_sum 'Al2 O5 Si1'
_chemical_name_mineral Andalusite
_publ_section_title
;
Transferability of empirical force fields in silicates : lattice-
dynamical evaluation of atomic displacement parameters and
thermodynamic properties for the Al2 O Si O4 polymorphs
;
loop_
_citation_id
_citation_journal_abbrev
_citation_year
_citation_journal_volume
_citation_page_first
_citation_page_last
_citation_journal_id_ASTM
primary 'Acta Crystallographica B (39,1983-)' 1997 53 82 93 ASBSDK
loop_
_publ_author_name
'Pilati, T.'
'Demartin, F.'
'Gramaccioli, C.M.'
_cell_length_a 7.7992(6)
_cell_length_b 7.9050(6)
_cell_length_c 5.5591(5)
_cell_angle_alpha 90.
_cell_angle_beta 90.
_cell_angle_gamma 90.
_cell_volume 342.73
_cell_formula_units_Z 4
_symmetry_space_group_name_H-M 'P n n m'
_symmetry_Int_Tables_number 58
_refine_ls_R_factor_all .014
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
1 'x+.5, -y+.5, z+.5'
2 '-x+.5, y+.5, z+.5'
3 'x, y, -z'
4 '-x, -y, -z'
5 '-x+.5, y+.5, -z+.5'
6 'x+.5, -y+.5, -z+.5'
7 '-x, -y, z'
8 'x, y, z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
Al3+ 3
O2- -2
Si4+ 4
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
Si1 Si4+ 4 g 0.24606(3) 0.25217(3) 0 1. 0
Al1 Al3+ 4 e 0 0 0.24196(4) 1. 0
Al2 Al3+ 4 g 0.37054(3) 0.13900(3) 0.5 1. 0
O1 O2- 4 g 0.42326(8) 0.36293(7) 0.5 1. 0
O2 O2- 4 g 0.42438(8) 0.36293(7) 0 1. 0
O3 O2- 4 g 0.10280(7) 0.40022(7) 0 1. 0
O4 O2- 8 h 0.23064(5) 0.13397(5) 0.23948(8) 1. 0


#End of data_84613-ICSD

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