data_global
_chemical_name_mineral 'Franciscanite'
loop_
_publ_author_name
'Pertlik F'
_journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte'
_journal_volume 1986 
_journal_year 1986
_journal_page_first 493
_journal_page_last 499
_publ_section_title
;
 The crystal structure of franciscanite, Mn3(Vx_1-x)(SiO4)(O,OH)3,(x ~ 0.5)
 California, USA
;
_database_code_amcsd 0014805
_chemical_compound_source 'Franciscan Complex, Pennsylvania mine, Santa Clara County,'
_chemical_formula_sum 'Mn3 V.5 Si O7 H3'
_cell_length_a 8.1518
_cell_length_b 8.1518
_cell_length_c 4.8091
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 276.759
_exptl_crystal_density_diffrn      4.001
_symmetry_space_group_name_H-M 'P 3'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-y,x-y,z'
  '-x+y,-x,z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Mn1   0.58480   0.89160   0.00000   1.00000
Mn2   0.40900   0.11510   0.49940   1.00000
V1   0.00000   0.00000   0.96090   0.64000
V2   0.00000   0.00000   0.43240   0.36000
Si1   0.33333   0.66667   0.43420   1.00000
Si2   0.66667   0.33333   0.93980   1.00000
O2   0.36660   0.86770   0.29450   1.00000
O22   0.62770   0.13170   0.79730   1.00000
O3   0.33333   0.66667   0.78440   1.00000
O33   0.66667   0.33333   0.26700   1.00000
O-H1   0.78890   0.83580   0.78140   1.00000
O-H11   0.21350   0.16300   0.26470   1.00000
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Mn1 0.01100 0.00500 0.01500 0.00000 -0.00100 -0.00100
Mn2 0.00900 0.01700 0.00900 0.00500 -0.00100 -0.00200
V1 0.00100 0.00100 0.03100 0.00000 0.00000 0.00000
V2 0.03500 0.03500 0.00100 0.01700 0.00000 0.00000
Si1 0.01500 0.01500 0.00700 0.00700 0.00000 0.00000
Si2 0.00600 0.00600 0.01000 0.00300 0.00000 0.00000
O2 0.00800 0.01200 0.01600 0.00000 0.00700 0.00200
O22 0.02200 0.00900 0.00900 0.00900 0.00600 0.00200
O3 0.01200 0.01200 0.03600 0.00600 0.00000 0.00000
O33 0.00100 0.00100 0.01500 0.00000 0.00000 0.00000
O-H1 0.02900 0.01300 0.02300 0.01300 -0.01300 -0.00900
O-H11 0.00300 0.02000 0.01100 0.00400 -0.00700 -0.00100