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Flinkite

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Harstigen Mine, Pajsberg, Filipstad, Värmland, Sweden
© Kjell Gatedal

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Formula:
Mn
2+
2
Mn
3+
 
AsO
 
4
(OH)
 
4
System:OrthorhombicColour:Green-brown, dark green; ...
Hardness:4½
Name:After Gustav Flink (1849-1931), Swedish mineralogist and systematic collector of the Långban deposits.
This page provides mineralogical data about Flinkite.

Classification of Flinkite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:7/B.15-10
Nickel-Strunz 10th (pending) edition ID:8.BE.30

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
E : With only medium-sized cations, (OH, etc.):RO4 > 2:1
Dana 8th edition ID:41.3.3.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
3 : (AB)3(XO4)Zq
Hey's CIM Ref.:20.8.4

20 : Arsenates (also arsenates with phosphate, but without other anions)
8 : Arsenates of Mn
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Type Occurrence of Flinkite

Type Locality:Harstigen Mine, Pajsberg, Filipstad, Värmland, Sweden
General Appearance of Type Material:Veinlets in magnetite ore.
Year of Discovery:1889
Geological Setting of type material:Metamorphosed Mn-Fe ore body of the Långban type.
Associated Minerals at type locality:
SarkiniteBrandtiteCaryopiliteNadoriteLead
Manganoan CalciteBaryte

Physical Properties of Flinkite

Lustre:Vitreous, Greasy
Diaphaneity (Transparency):Transparent
Colour:Green-brown, dark green; Brownish yellow-green in transmitted light.
Hardness (Mohs):4½
Tenacity:Brittle
Density (measured):3.87 g/cm3

Crystallography of Flinkite

Crystal System:Orthorhombic
Cell Parameters:a = 9.55Å, b = 13.11Å, c = 5.35Å
Ratio:a:b:c = 0.728 : 1 : 0.408
Unit Cell Volume:V 669.82 ų (Calculated from Unit Cell)
Morphology:Crystals thin tabular {001} with minor elongation [010]. The crystals are frequently rounded in the zone [100], and {001} is striated [100]. Individuals rare, commonly as feather-like aggregates.

Optical Data of Flinkite

Type:Biaxial (+)
RI values: nα = 1.783 nβ = 1.801 nγ = 1.834
Maximum Birefringence:δ = 0.051

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:extreme
Pleochroism:Visible
Comments:X = b = Pale brownish green
Y = c = Yellow-green
Z = a = Orange-brown
Comments:2V large.

Chemical Properties of Flinkite

Formula:
Mn
2+
2
Mn
3+
 
AsO
 
4
(OH)
 
4
Essential elements:As, H, Mn, O
All elements listed in formula:As, H, Mn, O

Relationship of Flinkite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.BE.05Augelite
Al
 
2
[(OH)
 
3
|PO
 
4
]
8.BE.10Grattarolaite
Fe
3+
 
[O
 
3
|PO
 
4
]
8.BE.15Cornetite
Cu
 
3
[(OH)
 
3
|PO
 
4
]
8.BE.20Clinoclase
Cu
 
3
[(OH)
 
3
|AsO
 
4
]
8.BE.25Arhbarite
Cu
 
2
Mg[(OH)
 
3
|AsO
 
4
]
8.BE.25Gilmarite
Cu
 
3
[(OH)
 
3
|AsO
 
4
]
8.BE.30Allactite
Mn
2+
7
(AsO
 
4
)
 
2
(OH)
 
8
8.BE.30Raadeite
Mg
 
7
(PO
 
4
)
 
2
(OH)
 
8
8.BE.35Chlorophoenicite
(Mn,Mg)
 
3
Zn
 
2
(AsO
 
4
)(OH,O)
 
6
8.BE.35Magnesiochlorophoenicite
(Mg,Mn)
 
3
Zn
 
2
(AsO
 
4
)(OH,O)
 
6
8.BE.40Gerdtremmelite
(Zn,Fe)(Al,Fe)
 
2
AsO
 
4
(OH)
 
5
8.BE.45Dixenite
CuMn
2+
14
Fe
2+
 
[(OH)
 
6
|(AsO
 
3
)
 
5
|AsO
 
4
|(SiO
 
4
)
 
2
]
8.BE.45Hematolite
(Mn,Mg,Al)
 
15
(AsO
 
3
)(AsO
 
4
)
 
2
(OH)
 
23
8.BE.45Kraisslite
(Mn
2+
 
,Mg)
 
24
Zn
 
4
[(OH)
 
12
|(AsO
 
4
)
 
4
|(SiO
 
4
)
 
8
]
8.BE.45Mcgovernite
(Mn,Mg,Zn)
 
273
As
3+
~12
As
5+
~30
Si
 
~42
O
 
324
(OH)
 
252
8.BE.45Arakiite
(Zn,Mn
2+
 
)(Mn
2+
 
,Mg)
 
12
(Fe
3+
 
,Al)
 
2
(AsO
 
3
)(AsO
 
4
)
 
2
(OH)
 
23
8.BE.45Turtmannite
(Mn,Mg)
 
22.5
Mg
 
3-3x
[(V,As)O
 
4
]
 
3
[SiO
 
4
]
 
3
[AsO
 
3
]
 
x
O
 
5-5x
(OH)
 
20+x
8.BE.50Synadelphite
Mn
2+
9
[(OH)
 
9
|As
3+
 
O
 
3
|(As
5+
 
O
 
4
)
 
2
] · 2H
 
2
O
8.BE.55Holdenite
(Mn
2+
 
,Mg)
 
6
Zn
 
3
[(OH)
 
8
|(AsO
 
4
)
 
2
|SiO
 
4
]
8.BE.60Kolicite
Mn
2+
7
Zn
 
4
[(OH)
 
8
|(AsO
 
4
)
 
2
|(SiO
 
4
)
 
2
]
8.BE.65Sabelliite
(Cu,Zn)
 
2
Zn[(OH)
 
3
|(AsO
 
4
,SbO
 
4
)]
8.BE.70Jarosewichite
Mn
 
3
MnAsO
 
4
(OH)
 
6
8.BE.75Theisite
Cu
 
5
Zn
 
5
[(OH)
 
7
|(AsO
 
4
,SbO
 
4
)]
 
2
8.BE.80Coparsite
Cu
 
4
[O
 
2
|Cl|(AsO
 
4
,VO
 
4
)]
8.BE.85Waterhouseite
Mn
2+
7
[(OH)
 
8
|(PO
 
4
)
 
2
]
Related Minerals - Hey's Index Grouping:

- +
20.8.1Sarkinite
Mn
2+
2
[OH|AsO
 
4
]
20.8.2Eveite
Mn
2+
2
[OH|AsO
 
4
]
20.8.3Arsenoclasite
Mn
2+
5
[(OH)
 
2
|AsO
 
4
]
 
2
20.8.5Jarosewichite
Mn
 
3
MnAsO
 
4
(OH)
 
6
20.8.6Allactite
Mn
2+
7
(AsO
 
4
)
 
2
(OH)
 
8
20.8.7Krautite
MnHAsO
 
4
·H
 
2
O
20.8.8Synadelphite
Mn
2+
9
[(OH)
 
9
|As
3+
 
O
 
3
|(As
5+
 
O
 
4
)
 
2
] · 2H
 
2
O
20.8.9Sterlinghillite
Mn
 
3
(AsO
 
4
)
 
2
·4H
 
2
O
20.8.10Geigerite
Mn
 
5
[HAsO
 
4
|AsO
 
4
]
 
2
 · 10H
 
2
O
20.8.11Akrochordite
(Mn
2+
 
,Mg)
 
5
[(OH)
 
2
|AsO
 
4
]
 
2
 · 4H
 
2
O
20.8.12Manganohörnesite
(Mn,Mg)
 
3
(AsO
 
4
)
 
2
·8H
 
2
O
20.8.13Fluckite
CaMnH
 
2
(AsO
 
4
)
 
2
·2H
 
2
O
20.8.14Brandtite
Ca
 
2
(Mn
2+
 
,Mg)[AsO
 
4
]
 
2
 · 2H
 
2
O
20.8.15Parabrandtite
Ca
 
2
Mn
2+
 
[AsO
 
4
]
 
2
 · 2H
 
2
O
20.8.16Wallkilldellite-(Mn)
Ca
 
2
Mn
2+
3
[(OH)
 
2
|AsO
 
4
]
 
2
 · 9H
 
2
O
20.8.17Berzeliite
NaCa
 
2
(Mg,Mn
2+
 
)
 
2
[AsO
 
4
]
 
3
20.8.18Manganberzeliite
(Ca,Na)
 
3
(Mn
2+
 
,Mg)
 
2
[AsO
 
4
]
 
3
20.8.19Magnesiochlorophoenicite
(Mg,Mn)
 
3
Zn
 
2
(AsO
 
4
)(OH,O)
 
6
20.8.20Villyaellenite
(Mn,Ca,Zn)
 
5
(AsO
 
4
)
 
2
[AsO
 
3
(OH)]
 
2
·4H
 
2
O
20.8.21Hematolite
(Mn,Mg,Al)
 
15
(AsO
 
3
)(AsO
 
4
)
 
2
(OH)
 
23
20.8.22Grischunite
NaCa
 
2
Mn
2+
5
Fe
3+
 
[AsO
 
4
]
 
6
 · 2H
 
2
O

Other Names for Flinkite

Other Languages:
German:Flinkit
Russian:Флинкит
Spanish:Flinkita

Other Information

Other Information:Soluble in HCl.
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 Flinkite

Reference List:Hamberg (1889) Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm: 11: 212.

Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 75.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 793-794.

American Mineralogist (1967): 52: 1603-1613.

Dunn, Pete J. (1995): Franklin and Sterling Hill New Jersey: the world’s most magnificent mineral deposits (published privately), part 5: 668.

U. Kolitsch (2001): Redetermination of the mixed-valence manganese arsenate flinkite, MnII2MnIII(OH)4(AsO4). Acta Crystallogr. E57, i115-i118.

Articles/Blogs about Flinkite

Internet Links for Flinkite

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    Localities for Flinkite

    Hide Locality List
    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
     
    • Dalsland
      • Åmål
        • Strandhem ore field
    		Kjell Gatedal
    • Värmland
      • Filipstad
    		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.
        • Pajsberg
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 726, 794; Hamberg (1889) Geologiska Föreningens I Stockholm Förhandlingar, Stockholm: 11: 212-222.
    USA
     
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Franklin
    		Dunn(1995):Pt5:668.
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