Birnessite Group

A group of related mineral species

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Photos of Birnessite Group (134)

Birnessite Group Gallery Search Photos of Birnessite Group

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Birnessite, etc.

Clarion-Clipperton zone, Pacific Ocean

Birnessite, etc.

Red Hills, Derry District, Sierra County, New Mexico, USA

Birnessite, etc.

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Birnessite, etc.

Clarion-Clipperton zone, Pacific Ocean

Birnessite, etc.

Red Hills, Derry District, Sierra County, New Mexico, USA

Birnessite, etc.

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Birnessite, etc.

Clarion-Clipperton zone, Pacific Ocean

Birnessite, etc.

Red Hills, Derry District, Sierra County, New Mexico, USA

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About Birnessite GroupHide

This page provides mineralogical data about Birnessite Group.

Unique IdentifiersHide

Mindat ID:

35538

Long-form identifier:

mindat:1:1:35538:6

GUID
(UUID V4):

2760692f-138e-4369-bacd-da5dfcd3dc34

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	Locality	Temp (K)
0001300	Birnessite	Post J E, Veblen D R (1990) Crystal structure determinations of synthetic sodium, magnesium and potassium birnessite using TEM and the Rietveld method sample is Na-birn American Mineralogist 75 477-489	1990		293
0001301	Birnessite	Post J E, Veblen D R (1990) Crystal structure determinations of synthetic sodium, magnesium and potassium birnessite using TEM and the Rietveld method American Mineralogist 75 477-489	1990		293
0001302	Birnessite	Post J E, Veblen D R (1990) Crystal structure determinations of synthetic sodium, magnesium and potassium birnessite using TEM and the Rietveld method American Mineralogist 75 477-489	1990		293
0002932	Birnessite	Lanson B, Drits V A, Feng Q, Manceau A (2002) Structure of synthetic Na-rich birnessite: Evidence for a triclinic one-layer unit cell American Mineralogist 87 1662-1671	2002		293
0004276	Birnessite	Lopano C L, Heaney P J, Post J E, Hanson J, Komarneni S (2007) Time-resolved structural analysis of K-and Ba-exchange reactions with synthetic Na-birnessite using synchrotron X-ray diffraction American Mineralogist 92 380-387	2007	synthetic	293
0004277	Birnessite	Lopano C L, Heaney P J, Post J E, Hanson J, Komarneni S (2007) Time-resolved structural analysis of K-and Ba-exchange reactions with synthetic Na-birnessite using synchrotron X-ray diffraction American Mineralogist 92 380-387	2007	synthetic	293
0004947	Birnessite	Lopano C L, Heaney P J, Post J E (2009) Cs-exchange in birnessite: Reaction mechanisms inferred from time-resolved X-ray diffraction and transmission electron microscopy American Mineralogist 94 816-826	2009		293
0004948	Birnessite	Lopano C L, Heaney P J, Post J E (2009) Cs-exchange in birnessite: Reaction mechanisms inferred from time-resolved X-ray diffraction and transmission electron microscopy American Mineralogist 94 816-826	2009		293
0004949	Birnessite	Lopano C L, Heaney P J, Post J E (2009) Cs-exchange in birnessite: Reaction mechanisms inferred from time-resolved X-ray diffraction and transmission electron microscopy American Mineralogist 94 816-826	2009		293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Birnessite'
loop_
_publ_author_name
'Post J E'
'Veblen D R'
_journal_name_full 'American Mineralogist'
_journal_volume 75 
_journal_year 1990
_journal_page_first 477
_journal_page_last 489
_publ_section_title
;
 Crystal structure determinations of synthetic sodium, magnesium and potassium
 birnessite using TEM and the Rietveld method
 sample is Na-birn
;
_database_code_amcsd 0001300
_chemical_formula_sum 'Mn O2.75 Na.29 H1.5'
_cell_length_a 5.174
_cell_length_b 2.850
_cell_length_c 7.336
_cell_angle_alpha 90
_cell_angle_beta 103.18
_cell_angle_gamma 90
_cell_volume 105.326
_exptl_crystal_density_diffrn      3.377
_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
Mn   0.00000   0.00000   0.00000   1.00000   0.00633
O1   0.37600   0.00000   0.13300   1.00000   0.01267
Na   0.59500   0.00000   0.50000   0.14500   0.01900
Wat2   0.59500   0.00000   0.50000   0.30000   0.01900
Wat3   0.00000   0.00000   0.50000   0.15000   0.01900

Relationship of Birnessite Group to other SpeciesHide

Group Members:

Birnessite	(Na,Ca)_0.5(Mn⁴⁺,Mn³⁺)₂O₄ · 1.5H₂O	Mon. 2/m : B2/m
Ranciéite	(Ca,Mn²⁺)_0.2(Mn⁴⁺,Mn³⁺)O₂ · 0.6H₂O	Trig. 3 : P3
Takanelite	(Mn,Ca)Mn₄O₉ · H₂O	Hex.