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Orthopinakiolite

Formula:
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
[O
 
2
|BO
 
3
]
System:OrthorhombicHardness:6
Dimorph of:Pinakiolite


The orthorhombic dimorph of Pinakiolite.

Classification of Orthopinakiolite

IMA status:Approved
Strunz 8th edition ID:5/G.04-60
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:24.2.5.1

24 : ANHYDROUS BORATES
2 : A2BO2[XO3]
Hey's CIM Ref.:9.7.2

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

Type Locality:Långban, Filipstad, Värmland, Sweden
Year of Discovery:1960

Physical Properties of Orthopinakiolite

Hardness (Mohs):6

Crystallography of Orthopinakiolite

Crystal System:Orthorhombic
Cell Parameters:a = 18.45Å, b = 12.7Å, c = 6.07Å
Ratio:a:b:c = 1.453 : 1 : 0.478
Unit Cell Volume:V 1,422.29 ų (Calculated from Unit Cell)

Chemical Properties of Orthopinakiolite

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

Relationship of Orthopinakiolite to other Species

Related Minerals - Nickel-Strunz Grouping):
6.AB.05Hambergite
Be
 
2
[O|OH|BO
 
2
]
6.AB.10Berborite
Be
 
2
[(OH,F)|BO
 
3
] · H
 
2
O
6.AB.15Jeremejevite
Al
 
6
[(F,OH)
 
3
|(BO
 
3
)
 
5
]
6.AB.20Warwickite
(Mg,Fe
2+
 
)
 
3
Ti[O|BO
 
3
]
 
2
6.AB.20Yuanfuliite
Mg(Fe
3+
 
,Fe
2+
 
,Al,Ti,Mg)[O|BO
 
3
]
6.AB.25Karlite
Mg
 
7
[(OH,Cl)
 
5
|(BO
 
3
)
 
3
]
6.AB.30Azoproite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Ti,Mg)[O
 
2
|BO
 
3
]
6.AB.30Bonaccordite
Ni
 
2
Fe
3+
 
[O
 
2
|BO
 
3
]
6.AB.30Fredrikssonite
Mg
 
2
(Mn
3+
 
,Fe
3+
 
)[O
 
2
|BO
 
3
]
6.AB.30Ludwigite
Mg
 
2
Fe
3+
 
[O
 
2
|BO
 
3
]
6.AB.30Vonsenite
Fe
2+
2
Fe
3+
 
[O
 
2
|BO
 
3
]
6.AB.35Pinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
[O
 
2
|BO
 
3
]
6.AB.40Blatterite
(Mn
2+
 
,Mg)
 
2
(Mn
3+
 
,Sb
3+
 
,Fe
3+
 
)[O
 
2
|BO
 
3
]
6.AB.40Chestermanite
Mg
 
2
(Fe
3+
 
,Mn
3+
 
,Al,Sb
3+
 
)[O
 
2
|BO
 
3
]
6.AB.40Takéuchiite
(Mg,Mn
2+
 
)
 
2
(Mn
3+
 
,Fe
3+
 
)[O
 
2
|BO
 
3
]
6.AB.45Hulsite
(Fe
2+
 
,Mg)
 
2
(Fe
3+
 
,Sn)[O
 
2
|BO
 
3
]
6.AB.45Magnesiohulsite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Sn,Mg)[O
 
2
|BO
 
3
]
6.AB.45Aluminomagnesiohulsite
(Mg,Fe
2+
 
)
 
2
(Al,Mg,Sn)[O
 
2
|BO
 
3
]
6.AB.50Fluoborite
Mg
 
3
[(F,OH)
 
3
|BO
 
3
]
6.AB.50Hydroxylborite
Mg
 
3
(BO
 
3
)(OH)
 
3
6.AB.55Shabynite
Mg
 
5
[(Cl,OH)
 
2
|(OH)
 
5
|BO
 
3
] · 4H
 
2
O
6.AB.55Wightmanite
Mg
 
5
[O|(OH)
 
5
|BO
 
3
] · 2H
 
2
O
6.AB.60Gaudefroyite
Ca
 
4
Mn
3+
2-3
[(O,OH)
 
3
|CO
 
3
|(BO
 
3
)
 
3
]
6.AB.65Sakhaite
Ca
 
12
Mg
 
4
[Cl|(OH)
 
2
|(CO
 
3
)
 
4
|(BO
 
3
)
 
7
]
6.AB.70Harkerite
Ca
 
24
Mg
 
8
Al
 
2
Si
 
8
(O,OH)
 
32
(BO
 
3
)
 
8
(CO
 
3
)
 
8
(H
 
2
O,Cl)
6.AB.75Pertsevite
Mg
 
2
BO
 
3
F
6.AB.80Jacquesdietrichite
Cu
 
2
BO(OH)
 
2
(OH)
 
3
6.AB.85Painite
ZrCaAl
 
9
[O
 
15
|BO
 
3
]
Related Minerals - Hey's Index Grouping:
9.7.1Pinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
[O
 
2
|BO
 
3
]
9.7.3Jimboite
(Mn
2+
 
,Mg)
 
3
[BO
 
3
]
 
2
9.7.4Sussexite
(Mn
2+
 
,Mg)
 
2
[B
 
2
O
 
5
] · H
 
2
O
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
]
9.7.8Takéuchiite
(Mg,Mn
2+
 
)
 
2
(Mn
3+
 
,Fe
3+
 
)[O
 
2
|BO
 
3
]
9.7.9Blatterite
(Mn
2+
 
,Mg)
 
2
(Mn
3+
 
,Sb
3+
 
,Fe
3+
 
)[O
 
2
|BO
 
3
]
9.7.10Tusionite
Mn
2+
 
Sn
4+
 
[BO
 
3
]
 
2

Other Names for Orthopinakiolite

German names:
Orthopinakiolit
Spanish names:
Orthopinakiolita

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 Orthopinakiolite

Reference List:American Mineralogist (1961): 46: 768.

Canadian Mineralogist (1978): 16: 475-485.

Acta Crystallographica: A37: 28-35.

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

Internet Links for Orthopinakiolite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Orthopinakiolite in the Natural History Museum (London) online catalogue
  • Orthopinakiolite details from Handbook of Mineralogy (PDF)
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    Localities for Orthopinakiolite

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    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
    		Arkiv Min.Geol.(1961) 2, 551-555; 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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