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Takéuchiite

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Långban, Filipstad, Värmland, Sweden
© 2008, JGW




Formula:
(Mg,Mn
2+
 
)
 
2
(Mn
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
System:OrthorhombicColour:Black
Hardness:6
Member of:Orthopinakiolite Group
This page provides mineralogical data about Takéuchiite.

Classification of Takéuchiite

IMA status:Approved 1980
Strunz 8th edition ID:5/G.04-80
Nickel-Strunz 10th (pending) edition ID:6.AB.40

6 : BORATES
A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.
Dana 8th edition ID:24.2.6.1

24 : ANHYDROUS BORATES
2 : A2BO2[XO3]
Hey's CIM Ref.:9.7.8

9 : Borates
7 : Borates of Mn
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Type Occurrence of Takéuchiite

Type Locality:Långban, Filipstad, Värmland, Sweden
Year of Discovery:1980

Physical Properties of Takéuchiite

Lustre:Sub-Metallic
Diaphaneity (Transparency):Opaque
Colour:Black
Streak:Brown
Hardness (Mohs):6

Crystallography of Takéuchiite

Crystal System:Orthorhombic
Cell Parameters:a = 27.5Å, b = 12.61Å, c = 6.04Å
Ratio:a:b:c = 2.181 : 1 : 0.479
Unit Cell Volume:V 2,094.52 ų (Calculated from Unit Cell)

Chemical Properties of Takéuchiite

Formula:
(Mg,Mn
2+
 
)
 
2
(Mn
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
Essential elements:B, Mg, Mn, O
All elements listed in formula:B, Fe, Mg, Mn, O

Relationship of Takéuchiite to other Species

Member of:Orthopinakiolite Group
Other Members of Group:

- +
Blatterite
(Mn
2+
 
,Mg)
 
2
(Mn
3+
 
,Sb
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
Chestermanite
Mg
 
2
(Fe
3+
 
,Mn
3+
 
,Al,Sb
3+
 
)(BO
 
3
)O
 
2
Orthopinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
(BO
 
3
)O
 
2
Related Minerals - Nickel-Strunz Grouping):

- +
6.AB.05Hambergite
Be
 
2
(BO
 
3
)(OH)
6.AB.10Berborite
Be
 
2
(BO
 
3
)(OH,F) · H
 
2
O
6.AB.15Jeremejevite
Al
 
6
(BO
 
3
)
 
5
(F,OH)
 
3
6.AB.20Warwickite
(Mg,Fe
2+
 
)
 
3
Ti(BO
 
3
)
 
2
O
 
2
6.AB.20Yuanfuliite
Mg(Fe
3+
 
,Fe
2+
 
,Al,Ti,Mg)(BO
 
3
)O
6.AB.25Karlite
Mg
 
7
(BO
 
3
)
 
3
(OH,Cl)
 
5
6.AB.30Azoproite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Ti,Mg)(BO
 
3
)O
 
2
6.AB.30Bonaccordite
Ni
 
2
Fe
3+
 
(BO
 
3
)O
 
2
6.AB.30Fredrikssonite
Mg
 
2
(Mn
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
6.AB.30Ludwigite
Mg
 
2
Fe
3+
 
(BO
 
3
)O
 
2
6.AB.30Vonsenite
Fe
2+
2
Fe
3+
 
(BO
 
3
)O
 
2
6.AB.35Pinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
(BO
 
3
)O
 
2
6.AB.40Blatterite
(Mn
2+
 
,Mg)
 
2
(Mn
3+
 
,Sb
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
6.AB.40Chestermanite
Mg
 
2
(Fe
3+
 
,Mn
3+
 
,Al,Sb
3+
 
)(BO
 
3
)O
 
2
6.AB.40Orthopinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
(BO
 
3
)O
 
2
6.AB.45Hulsite
(Fe
2+
 
,Mg)
 
2
(Fe
3+
 
,Sn)(BO
 
3
)O
 
2
6.AB.45Magnesiohulsite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Sn,Mg)(BO
 
3
)O
 
2
6.AB.45Aluminomagnesiohulsite
(Mg,Fe
2+
 
)
 
2
(Al,Mg,Sn)(BO
 
3
)O
 
2
6.AB.50Fluoborite
Mg
 
3
(BO
 
3
)(F,OH)
 
3
6.AB.50Hydroxylborite
Mg
 
3
(BO
 
3
)(OH)
 
3
6.AB.55Shabynite
Mg
 
5
(BO
 
3
)(OH)
 
5
(Cl,OH)
 
2
 · 4H
 
2
O
6.AB.55Wightmanite
Mg
 
5
(BO
 
3
)O(OH)
 
5
 · 2H
 
2
O
6.AB.60Gaudefroyite
Ca
 
4
Mn
3+
2-3
(BO
 
3
)
 
3
(CO
 
3
)(O,OH)
 
3
6.AB.65Sakhaite
Ca
 
12
Mg
 
4
(BO
 
3
)
 
7
(CO
 
3
)
 
4
(OH)
 
2
Cl
6.AB.70Harkerite
Ca
 
12
Mg
 
4
Al(BO
 
3
)
 
3
(SiO
 
4
)
 
4
(CO
 
3
)
 
5
 · H
 
2
O
6.AB.75Pertsevite-(F)
Mg
 
2
(BO
 
3
)(F,OH)
6.AB.75Pertsevite-(OH)
Mg
 
2
(BO
 
3
)(OH)
6.AB.80Jacquesdietrichite
Cu
 
2
(H
 
2
BO
 
3
)(OH)
 
3
6.AB.85Painite
CaZrAl
 
9
(BO
 
3
)O
 
15
Related Minerals - Hey's Index Grouping:

- +
9.7.1Pinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
(BO
 
3
)O
 
2
9.7.2Orthopinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
(BO
 
3
)O
 
2
9.7.3Jimboite
(Mn
2+
 
,Mg)
 
3
[BO
 
3
]
 
2
9.7.4Sussexite
(Mn
2+
 
,Mg)
 
2
[(OH)(B
 
2
O
 
4
(OH))]
9.7.5Wiserite
(Mn,Mg)
 
14
[Cl|(OH)
 
8
|(Si,Mg)(O,OH)
 
4
|(B
 
2
O
 
5
)
 
4
]
9.7.6Kurchatovite
Ca(Mg,Mn
2+
 
)[B
 
2
O
 
5
]
9.7.7Clinokurchatovite
Ca(Mg,Fe
2+
 
,Mn
2+
 
)[B
 
2
O
 
5
]
9.7.9Blatterite
(Mn
2+
 
,Mg)
 
2
(Mn
3+
 
,Sb
3+
 
,Fe
3+
 
)(BO
 
3
)O
 
2
9.7.10Tusionite
Mn
2+
 
Sn
4+
 
[BO
 
3
]
 
2

Other Names for Takéuchiite

Synonyms:
IMA1980-018
Other Languages:
German:Takeuchiit
Russian:Такеутиит
Spanish:Takeuchiita

Other Information

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

References for Takéuchiite

Reference List:

- +
American Mineralogist (1980): 65: 1130-1133.

American Mineralogist (1986): 71: 227.

Zeitschrift für Kristallographie (1987): 181: 135-149.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for Takéuchiite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Takeuchiite details from Handbook of Mineralogy (PDF)
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    • Localities for Takéuchiite

    The 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.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Sweden
     
    • Värmland
      • Filipstad
    		Amer.Min.(1980) 65, 1130-1133; Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
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