data_global
_chemical_name_mineral 'Manganlotharmeyerite'
loop_
_publ_author_name
'Brugger J'
'Krivovichev S V'
'Kolitsch U'
'Meisser N'
'Andrut M'
'Ansermet S'
'Burns P C'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 40 
_journal_year 2002
_journal_page_first 1597
_journal_page_last 1608
_publ_section_title
;
 Description and crystal structure of manganlotharmeyerite,
 Ca(Mn,_,Mg)2{AsO4,[AsO2(OH)2]}2(OH,H2O)2, from the Starlera Mn-deposit,
 Swiss Alps, and a redefinition of lotharmeyerite
;
_database_code_amcsd 0005797
_chemical_compound_source 'Starlera Mn-deposit, Swiss Alps'
_chemical_formula_sum 'Ca Mn1.18 Mg.34 As2 O10 H2.82'
_cell_length_a 9.043
_cell_length_b 6.2314
_cell_length_c 7.3889
_cell_angle_alpha 90
_cell_angle_beta 116.392
_cell_angle_gamma 90
_cell_volume 372.972
_exptl_crystal_density_diffrn      3.792
_symmetry_space_group_name_H-M 'C 1 2/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,z'
  '1/2+x,1/2-y,z'
  '-x,y,-z'
  '1/2-x,1/2+y,-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Ca1   0.00000   0.00000   0.00000   1.00000   0.01440
Mn2   0.25000   0.25000   0.50000   0.59000   0.00990
Mg2   0.25000   0.25000   0.50000   0.17000   0.00990
As   0.91498   0.50000   0.20524   1.00000   0.01020
O-H1   0.33850   0.50000   0.40980   0.59000   0.01950
Wat1   0.33850   0.50000   0.40980   0.41000   0.01950
O2   0.31700   0.00000   0.35730   1.00000   0.01900
O3   0.03510   0.27930   0.24680   1.00000   0.01860
O4   0.24200   0.50000   0.02370   1.00000   0.02220
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
Ca1 0.01660 0.01500 0.01050 0.00000 0.00510 0.00000
Mn2 0.00960 0.01010 0.00800 0.00000 0.00210 0.00020
Mg2 0.00960 0.01010 0.00800 0.00000 0.00210 0.00020
As 0.00890 0.01120 0.00890 0.00000 0.00260 0.00000
O-H1 0.01500 0.02200 0.01900 0.00000 0.00600 0.00000
Wat1 0.01500 0.02200 0.01900 0.00000 0.00600 0.00000
O2 0.01900 0.01900 0.02200 0.00000 0.01200 0.00000
O3 0.01680 0.01640 0.02000 0.00080 0.00610 -0.00100
O4 0.01700 0.03100 0.01300 0.00000 0.00200 0.00000