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Gatedalite

A valid IMA mineral species

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Gatedalite, etc.

Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

Gatedalite, etc.

Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

Gatedalite, etc.

Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

Gatedalite, etc.

Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

Gatedalite, etc.

Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

Gatedalite, etc.

Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

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About GatedaliteHide

Formula:

ZrMn²⁺₂Mn³⁺₄SiO₁₂

Colour:

Grey

Lustre:

Sub-Metallic

Specific Gravity:

4.783 (Calculated)

Crystal System:

Tetragonal

Member of:

Braunite Group

Name:

Named by U. Hålenius and F. Bosi in 2013 in honor of amateur mineralogist Kjell Gatedal (b. 1947) from Nora, Örebro, Sweden, for his contributions to the mineralogy of Långban-type deposits.

Type Locality:

ⓘ Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

The Mn²⁺ analogue of skogbyite.

Unique IdentifiersHide

Mindat ID:

46003

Long-form identifier:

mindat:1:1:46003:1

IMA Classification of GatedaliteHide

IMA status:

Approved

IMA Formula:

Zr⁴⁺Mn²⁺₂Mn³⁺₄SiO₁₂

Approval year:

2013

First published:

2015

Classification of GatedaliteHide

Strunz-mindat (2026):

9.AG.02

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference for Standard
Gtd	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of GatedaliteHide

Lustre:

Sub-Metallic

Transparency:

Opaque

Colour:

Grey

Hardness Data:

Could not be measured

Tenacity:

Brittle

Cleavage:

None Observed

Parting:

None observed.

Density:

4.783 g/cm³ (Calculated)

Comment:

Due to small grain size and lack of material density (and hardness) could not be measured.

Optical Data of GatedaliteHide

Anisotropism:

Very weak.

Bireflectance:

Very weak.

Reflectivity:

Wavelength	R₁ (%)	R₂ (%)
470nm	19.1%	20.0%
546nm	18.1%	19.1%
589nm	18.0%	18.9%
650nm	17.4%	18.7%

Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 20.0%.
R₁ shown in black, R₂ shown in red

Pleochroism:

Not Visible

Comments:

reflectivity in air varying between 17.1 and 20.8% in the visible spectral range

Chemistry of GatedaliteHide

Mindat Formula:

ZrMn²⁺₂Mn³⁺₄SiO₁₂

Element Weights:

Element	% weight
Mn	51.430 %
O	29.955 %
Zr	14.233 %
Si	4.382 %

Calculated from ideal end-member formula.

Elements listed:

Mn, O, Si, Zr - search for minerals with similar chemistry

Crystallography of GatedaliteHide

Crystal System:

Tetragonal

Class (H-M):

4/mmm(4/m2/m2/m) - Ditetragonal Dipyramidal

Space Group:

I4₁/acd

Setting:

I4₁/acd

Cell Parameters:

a = 9.4668(6) Å, c = 18.8701(14) Å

Ratio:

a:c = 1 : 1.993

Unit Cell V:

1,691.14 Å³ (Calculated from Unit Cell)

Comment:

I41/acd

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	Link	Year	Locality	Pressure (GPa)	Temp (K)
0020385	Gatedalite	Halenius U, Bosi F (2015) Gatedalite, Zr(Mn2+2Mn3+4)SiO12, a new mineral species of the braunite group from Langban, Sweden Mineralogical Magazine 79 625-634		2015	Langban deposit, Langban, Sweden	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Gatedalite'
loop_
_publ_author_name
'Halenius U'
'Bosi F'
_journal_name_full 'Mineralogical Magazine'
_journal_volume 79 
_journal_year 2015
_journal_page_first 625
_journal_page_last 634
_publ_section_title
;
 Gatedalite, Zr(Mn2+2Mn3+4)SiO12, a new mineral species of the braunite
 group from Langban, Sweden
;
_database_code_amcsd 0020385
_chemical_compound_source 'Langban deposit, Langban, Sweden'
_chemical_formula_sum 'Zr.49 Mn5.4 Mg.48 Ca.02 Zn.01 Ce.01 Al.01 Fe.58 Si O12'
_cell_length_a 9.4668
_cell_length_b 9.4668
_cell_length_c 18.8701
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1691.144
_exptl_crystal_density_diffrn      4.781
_symmetry_space_group_name_H-M 'I 41/a c d'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '1/4-y,3/4-x,3/4+z'
  '3/4-y,1/4-x,1/4+z'
  '1/4+y,3/4+x,3/4-z'
  '3/4+y,1/4+x,1/4-z'
  '1/4+y,3/4-x,1/4-z'
  '3/4+y,1/4-x,3/4-z'
  '1/4-y,3/4+x,1/4+z'
  '3/4-y,1/4+x,3/4+z'
  '1/2+x,-y,z'
  '+x,1/2-y,1/2+z'
  '1/2-x,y,-z'
  '-x,1/2+y,1/2-z'
  '1/2+x,y,1/2-z'
  '+x,1/2+y,-z'
  '1/2-x,-y,1/2+z'
  '-x,1/2-y,+z'
  '1/4+y,1/4+x,1/4+z'
  '3/4+y,3/4+x,3/4+z'
  '1/4-y,1/4-x,1/4-z'
  '3/4-y,3/4-x,3/4-z'
  '1/4-y,1/4+x,3/4-z'
  '3/4-y,3/4+x,1/4-z'
  '1/4+y,1/4-x,3/4+z'
  '3/4+y,3/4-x,1/4+z'
  '-x,y,1/2+z'
  '1/2-x,1/2+y,+z'
  'x,-y,1/2-z'
  '1/2+x,1/2-y,-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-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
Zr1   0.00000   0.25000   0.12500   0.49000   0.01083
Mn1   0.00000   0.25000   0.12500   0.40000   0.01083
Mg1   0.00000   0.25000   0.12500   0.07000   0.01083
Ca1   0.00000   0.25000   0.12500   0.02000   0.01083
Zn1   0.00000   0.25000   0.12500   0.01000   0.01083
Ce1   0.00000   0.25000   0.12500   0.01000   0.01083
Mn3+2   0.00000   0.00000   0.00000   0.96000   0.00999
Mn2+2   0.00000   0.00000   0.00000   0.01000   0.00999
Mg2   0.00000   0.00000   0.00000   0.02500   0.00999
Al2   0.00000   0.00000   0.00000   0.00500   0.00999
Mn3+3   0.25000   0.21715   0.00000   0.44500   0.00958
Fe3   0.25000   0.21715   0.00000   0.29000   0.00958
Mn2+3   0.25000   0.21715   0.00000   0.17000   0.00958
Mg3   0.25000   0.21715   0.00000   0.09500   0.00958
Mn3+4   0.23539   0.48539   0.12500   0.81500   0.00984
Mn2+4   0.23539   0.48539   0.12500   0.10000   0.00984
Mg4   0.23539   0.48539   0.12500   0.08500   0.00984
Si   0.00000   0.25000   0.37500   1.00000   0.00790
O1   0.14641   0.85765   0.94603   1.00000   0.01560
O2   0.13889   0.07817   0.05840   1.00000   0.01750
O3   0.08203   0.13707   0.92473   1.00000   0.01520
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
Zr1 0.01221 0.01221 0.00810 -0.00546 0.00000 0.00000
Mn1 0.01221 0.01221 0.00810 -0.00546 0.00000 0.00000
Mg1 0.01221 0.01221 0.00810 -0.00546 0.00000 0.00000
Ca1 0.01221 0.01221 0.00810 -0.00546 0.00000 0.00000
Zn1 0.01221 0.01221 0.00810 -0.00546 0.00000 0.00000
Ce1 0.01221 0.01221 0.00810 -0.00546 0.00000 0.00000
Mn3+2 0.01020 0.01138 0.00840 -0.00289 -0.00112 0.00136
Mn2+2 0.01020 0.01138 0.00840 -0.00289 -0.00112 0.00136
Mg2 0.01020 0.01138 0.00840 -0.00289 -0.00112 0.00136
Al2 0.01020 0.01138 0.00840 -0.00289 -0.00112 0.00136
Mn3+3 0.01018 0.00998 0.00860 0.00000 0.00147 0.00000
Fe3 0.01018 0.00998 0.00860 0.00000 0.00147 0.00000
Mn2+3 0.01018 0.00998 0.00860 0.00000 0.00147 0.00000
Mg3 0.01018 0.00998 0.00860 0.00000 0.00147 0.00000
Mn3+4 0.01062 0.01062 0.00830 -0.00049 0.00047 -0.00047
Mn2+4 0.01062 0.01062 0.00830 -0.00049 0.00047 -0.00047
Mg4 0.01062 0.01062 0.00830 -0.00049 0.00047 -0.00047
Si 0.00750 0.00750 0.00880 0.00000 0.00000 0.00000
O1 0.01730 0.01360 0.01580 -0.00240 -0.00380 0.00010
O2 0.02380 0.01700 0.01170 -0.00550 -0.00530 0.00080
O3 0.01660 0.01470 0.01440 0.00170 -0.00170 0.00160

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
2.730 Å	(100)
2.367 Å	(12)
2.359 Å	(6)
1.6735 Å	(12)
1.671 Å	(29)
1.427 Å	(16)
1.423 Å	(10)

Locality:

Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

Comments:

From Type Description.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
High-? alteration and/or metamorphism
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits

Type Occurrence of GatedaliteHide

Type Locality:

ⓘ Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden

General Appearance of Type Material:

Small (⩽60 μm), grey, submetallic, irregularly rounded anhedral grains.

Place of Conservation of Type Material:

Type material is deposited in the collections of the Swedish Museum of Natural History, Stockholm, Sweden, registration number 20130001.

Geological Setting of Type Material:

Hausmannite-impregnated skarn.

Associated Minerals at Type Locality:

Hausmannite	Jacobsite	Långbanite	'Manganese-bearing Calcite'	Oxyplumboroméite
Phlogopite	Pinakiolite	Tephroite

Synonyms of GatedaliteHide

IMA2013-091

Other Language Names for GatedaliteHide

Dutch:Gatedaliet

German:Gatedalit

Relationship of Gatedalite to other SpeciesHide

Member of:

Braunite Group

Other Members of Braunite Group:

Abswurmbachite	CuMn³⁺₆(SiO₄)O₈	Tet. 4/mmm(4/m2/m2/m) : I4₁/acd
Braunite	Mn²⁺Mn³⁺₆(SiO₄)O₈	Tet. 4/mmm(4/m2/m2/m) : I4₁/acd
'Braunite-II'	Ca(Mn³⁺,Fe)₁₄(SiO₄)O₂₀	Tet. 4/mmm(4/m2/m2/m) : I4₁/acd
Neltnerite	CaMn³⁺₆(SiO₄)O₈	Tet. 4/mmm(4/m2/m2/m) : I4₁/acd
Skogbyite	Zr(Mg₂Mn³⁺₄)SiO₁₂	Tet. 4/mmm(4/m2/m2/m) : I4₁/acd

Common AssociatesHide

Associations Based on Photo Data:

3 photos of Gatedalite associated with Tephroite	Mn²⁺₂(SiO₄)
1 photo of Gatedalite associated with Jacobsite	Mn²⁺Fe³⁺₂O₄
1 photo of Gatedalite associated with 'Schefferite'	(Ca,Mn)(Mg,Fe,Mn)Si₂O₆

Related Minerals - Strunz-mindat Grouping Hide

9.AG.	Aluminotaipingite-(CeCa)	(Ce₆Ca₃)◻Al(SiO₄)₃[SiO₃(OH)]₄F₃	Trig. 3m : R3c
9.AG.	'Ivanyukite-Na-T'	Na₂Ti₄(SiO₄)₃(OH)O₃ · 7H₂O	Trig. 3m : R3m
9.AG.	'Ivanyukite-Na-C'	Na₂Ti₄(SiO₄)₃(OH)₂O₂ · 6H₂O	Iso. 43m : P43m
9.AG.	Edgrewite	Ca₉(SiO₄)₄F₂	Mon. 2/m : P2₁/b
9.AG.05	Abswurmbachite	CuMn³⁺₆(SiO₄)O₈	Tet. 4/mmm(4/m2/m2/m) : I4₁/acd
9.AG.05	Neltnerite	CaMn³⁺₆(SiO₄)O₈	Tet. 4/mmm(4/m2/m2/m) : I4₁/acd
9.AG.05	Skogbyite	Zr(Mg₂Mn³⁺₄)SiO₁₂	Tet. 4/mmm(4/m2/m2/m) : I4₁/acd
9.AG.05	Braunite	Mn²⁺Mn³⁺₆(SiO₄)O₈	Tet. 4/mmm(4/m2/m2/m) : I4₁/acd
9.AG.05	'Braunite-II'	Ca(Mn³⁺,Fe)₁₄(SiO₄)O₂₀	Tet. 4/mmm(4/m2/m2/m) : I4₁/acd
9.AG.10	Långbanite	Mn²⁺₄Mn³⁺₉Sb⁵⁺O₁₆(SiO₄)₂	Trig. 3m : P3m1
9.AG.12	Taipingite-(CeCa)	(Ce₇Ca₂)◻Mg(SiO₄)₃[SiO₃(OH)]₄F₃	Trig. 3m : R3c
9.AG.15	Żabińskiite	Ca[Al_0.5(Ta,Nb)_0.5)]O(SiO₄)	Tric. 1
9.AG.15	Titanite	CaTiO(SiO₄)	Mon. 2/m : P2₁/b
9.AG.15	Vanadomalayaite	CaVO(SiO₄)	Mon. 2/m : B2/b
9.AG.15	Natrotitanite	(Na_0.5Y_0.5)TiO(SiO₄)	Mon. 2/m : B2/b
9.AG.15	Malayaite	CaSnO(SiO₄)	Mon. 2/m
9.AG.20	Ferricerite-(LaCa)	(La₆Ca₃)◻Fe³⁺(SiO₄)₃(SiO₃OH)₄(OH)₃	Trig. 3m : R3c
9.AG.20	Aluminocerite-(CeCa)	(Ce₆Ca₃)◻Al(SiO₄)₃[SiO₃(OH)]₄(OH)₃	Trig. 3m : R3c
9.AG.20	Cerite-(CeCa)	(Ce₇Ca₂)◻Mg(SiO₄)₃(SiO₃OH)₄(OH)₃	Trig. 3m : R3c
9.AG.20	Nipeiite-(Ce)	Ce₉Fe³⁺(SiO₄)₆[SiO₃(OH)](OH)₃	Trig. 3m : R3c
9.AG.25	'Yftisite-(Y)'	(Y,Dy,Er)₄(Ti,Sn)(SiO₄)₂O(F,OH)₆
9.AG.25	Mieite-(Y)	Y₄Ti(SiO₄)₂O[F,(OH)]₆	Orth. mmm(2/m2/m2/m) : Cmcm
9.AG.25	Trimounsite-(Y)	Y₂Ti₂(SiO₄)O₅	Mon. 2/m : P2₁/b
9.AG.30	Sitinakite	KNa₂Ti₄(SiO₄)₂O₅(OH) · 4H₂O	Tet. 4/mmm(4/m2/m2/m) : P4₂/mcm
9.AG.35	Kittatinnyite	Ca₂Mn₂Mn(SiO₄)₂(OH)₄ · 9H₂O	Hex.
9.AG.40b	Paranatisite	Na₂Ti(SiO₄)O	Orth. mmm(2/m2/m2/m) : Pmma
9.AG.40a	Natisite	Na₂Ti(SiO₄)O	Tet. 4/mmm(4/m2/m2/m)
9.AG.45	Törnebohmite-(Ce)	Ce₂Al(SiO₄)₂(OH)	Mon. 2/m : P2₁/b
9.AG.45	Törnebohmite-(La)	La₂Al(SiO₄)₂(OH)
9.AG.50	Ivanyukite-Na	Na₂Ti₄(SiO₄)₃(OH)₂O₂ · 6H₂O	Trig. 3m : R3m
9.AG.50	Ivanyukite-K	K₂Ti₄(SiO₄)₃(OH)₂O₂ · 9H₂O	Iso. 43m : P43m
9.AG.50	Ivanyukite-Cu	CuTi₄(SiO₄)₃(OH)₂O₂ · 7H₂O	Iso. 43m : P43m
9.AG.50	Kuliokite-(Y)	Y₄Al(SiO₄)₂(OH)₂F₅	Mon. m
9.AG.50	Hydroxyledgrewite	Ca₉(SiO₄)₄(OH)₂	Mon. 2/m : P2₁/b
9.AG.52	Ulfanderssonite-(Ce)	(Ce₁₅Ca)_Σ16Mg₂(SiO₄)₁₀(SiO₃OH)(OH,F)₅Cl₃	Mon. m : Bm
9.AG.55	Chantalite	CaAl₂(SiO₄)(OH)₄	Tet. 4/m : I4₁/a
9.AG.60	Vuagnatite	CaAl(SiO₄)(OH)	Orth. 222 : P2₁2₁2₁
9.AG.60	Mozartite	CaMn³⁺(SiO₄)(OH)	Orth. 222 : P2₁2₁2₁
9.AG.65	Hatrurite	Ca₃(SiO₄)O	Trig.
9.AG.70	Jasmundite	Ca₁₁(SiO₄)₄O₂S	Tet. 42m : I4m2
9.AG.75	Afwillite	Ca₃[SiO₄][SiO₂(OH)₂] · 2H₂O	Mon. m : Bb
9.AG.80	Bultfonteinite	Ca₂(HSiO₄)F · H₂O	Tric. 1 : P1
9.AG.85	Zoltaiite	BaV⁴⁺₂V³⁺₁₂(SiO₄)₂O₁₉	Trig. 3 : P3
9.AG.90	Tranquillityite	(Fe²⁺,Ca)₈(Zr,Y)₂Ti₃(SiO₄)₃O₁₂	Hex.

Other InformationHide

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for GatedaliteHide

mindat.org URL:

https://www.mindat.org/min-46003.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

Buy from D. Joyce minerals

References for GatedaliteHide

Reference List:

Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No 18. Mineralogical Magazine, 77 (8) 3249-3258 doi:10.1180/minmag.2013.077.8.15

Hålenius, U., Bosi, F. (2014) Gatedalite, a new Zr-rich braunite group mineral from Långban, Sweden. 21st General Meeting of the IMA (IMA2014), Gauteng, South Africa, September 1-5; Abstract Volume, 373.

Hålenius, Ulf, Bosi, Ferdinando (2015) Gatedalite, Zr(Mn²⁺₂Mn³⁺₄)SiO₁₂, a new mineral species of the braunite group from Långban, Sweden. Mineralogical Magazine, 79 (3) 625-634 doi:10.1180/minmag.2015.079.3.08

(2016) Gatedalite. Handbook of Mineralogy. Mineralogical Society of America

Localities for GatedaliteHide

Showing 1 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

symbol to view information about a locality. The

symbol next to localities in the list can be used to jump to that position on the map.

Hide all sections | Show all sections

Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

Sweden (TL)

Värmland County

Filipstad

Långban Ore District

ⓘ Långban Mine (TL)

Williams et al. (2013) +1 other reference

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Gatedalite

About GatedaliteHide

Unique IdentifiersHide

IMA Classification of GatedaliteHide

Classification of GatedaliteHide

Mineral SymbolsHide

Physical Properties of GatedaliteHide

Optical Data of GatedaliteHide

Chemistry of GatedaliteHide

Crystallography of GatedaliteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of GatedaliteHide

Synonyms of GatedaliteHide

Other Language Names for GatedaliteHide

Relationship of Gatedalite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for GatedaliteHide

References for GatedaliteHide

Localities for GatedaliteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide