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Stanĕkite

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Big Photo

Clementine II pegmatite, Okatjimukuju farm (Friedrichsfelde farm), Karibib District, Erongo Region, Namibia
© Marek Patúš




Formula:
(Mn
2+
 
,Fe
2+
 
,Mg)Fe
3+
 
(PO
 
4
)O
System:MonoclinicColour:Black
Lustre:GreasyHardness:4 - 5
Member of:Wagnerite Group
Name:Named after Josef Stanek (1928-1995), Professor of Mineralogy, Masarykov University, Brno, Czech Republic, a specialist in phosphate mineralogy.


Wagnerite Group.

Two polytypes are known: Ma2bc (type material) and Mabc (space group I2/a; Keller et al., 2005).

Classification of Stanĕkite

IMA status:Approved 1994
Strunz 8th edition ID:7/B.03-65
Nickel-Strunz 10th (pending) edition ID:8.BB.15

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
Dana 8th edition ID:41.6.3.4

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq
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Type Occurrence of Stanĕkite

Type Locality:Clementine II pegmatite, Okatjimukuju farm (Friedrichsfelde farm), Karibib District, Erongo Region, Namibia

Physical Properties of Stanĕkite

Lustre:Greasy
Colour:Black
Streak:Dark brown
Hardness (Mohs):4 - 5

Crystallography of Stanĕkite

Crystal System:Monoclinic

Optical Data of Stanĕkite

Type:Uniaxial
RI values: nα = 2.010 nβ = 2.110
Maximum Birefringence:δ = 2.010

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High

Chemical Properties of Stanĕkite

Formula:
(Mn
2+
 
,Fe
2+
 
,Mg)Fe
3+
 
(PO
 
4
)O
Essential elements:Fe, Mn, O, P
All elements listed in formula:Fe, Mg, Mn, O, P

Relationship of Stanĕkite to other Species

Member of:Wagnerite Group
Other Members of Group:

- +
Hydroxylwagnerite
Mg
 
2
(PO
 
4
)(OH)
Joosteite
Mn
2+
 
(Mn
3+
 
,Fe
3+
 
)(PO
 
4
)O
Sarkinite
Mn
2+
2
(AsO
 
4
)(OH)
Triploidite
(Mn
2+
 
,Fe
2+
 
)
 
2
(PO
 
4
)(OH)
Wagnerite
(Mg,Fe
2+
 
)
 
2
(PO
 
4
)F
Wolfeite
(Fe
2+
 
,Mn
2+
 
)
 
2
(PO
 
4
)(OH)
Related Minerals - Nickel-Strunz Grouping):

- +
8.BB.05Amblygonite
LiAl(PO
 
4
)F
8.BB.05Montebrasite
LiAl(PO
 
4
)(OH)
8.BB.05Tavorite
LiFe
3+
 
(PO
 
4
)(OH)
8.BB.10Triplite
(Mn
2+
 
,Fe
2+
 
)
 
2
(PO
 
4
)(F,OH)
8.BB.10Zwieselite
Fe
2+
 
Mn
2+
 
(PO
 
4
)F
8.BB.15Sarkinite
Mn
2+
2
(AsO
 
4
)(OH)
8.BB.15Triploidite
(Mn
2+
 
,Fe
2+
 
)
 
2
(PO
 
4
)(OH)
8.BB.15Wagnerite
(Mg,Fe
2+
 
)
 
2
(PO
 
4
)F
8.BB.15Wolfeite
(Fe
2+
 
,Mn
2+
 
)
 
2
(PO
 
4
)(OH)
8.BB.15Joosteite
Mn
2+
 
(Mn
3+
 
,Fe
3+
 
)(PO
 
4
)O
8.BB.15Hydroxylwagnerite
Mg
 
2
(PO
 
4
)(OH)
8.BB.20Holtedahlite
Mg
 
2
(PO
 
4
)(OH)
8.BB.20Satterlyite
(Fe
2+
 
,Mg,Fe
3+
 
)
 
2
(PO
 
4
)(OH,O)
8.BB.25Althausite
Mg
 
2
(PO
 
4
)(OH,F)
8.BB.30Adamite
Zn
 
2
(AsO
 
4
)(OH)
8.BB.30Eveite
Mn
2+
2
(AsO
 
4
)(OH)
8.BB.30Libethenite
Cu
 
2
(PO
 
4
)(OH)
8.BB.30Olivenite
Cu
 
2
(AsO
 
4
)(OH)
8.BB.30Zincolibethenite
CuZn(PO
 
4
)(OH)
8.BB.30Zincolivenite
CuZn(AsO
 
4
)(OH)
8.BB.30Auriacusite
Fe
3+
 
Cu
2+
 
(AsO
 
4
)O
8.BB.35Paradamite
Zn
 
2
(AsO
 
4
)(OH)
8.BB.35Tarbuttite
Zn
 
2
(PO
 
4
)(OH)
8.BB.40Barbosalite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
8.BB.40Hentschelite
CuFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
8.BB.40Lazulite
(Mg,Fe
2+
 
)Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
8.BB.40Scorzalite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
8.BB.40Wilhelmkleinite
ZnFe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
8.BB.45Trolleite
Al
 
4
(PO
 
4
)
 
3
(OH)
 
3
8.BB.50Namibite
Cu(BiO)
 
2
(VO
 
4
)(OH)
8.BB.55Phosphoellenbergerite
Mg
 
14
(PO
 
4
)
 
6
(HPO
 
4
,CO
 
3
)
 
2
(OH)
 
6
8.BB.60Urusovite
CuAl(AsO
 
4
)O
8.BB.65Theoparacelsite
Cu
 
3
(As
 
2
O
 
7
)(OH)
 
2
8.BB.70Turanite
Cu
 
5
(VO
 
4
)
 
2
(OH)
 
2
8.BB.75Stoiberite
Cu
 
5
(VO
 
4
)
 
2
O
 
2
8.BB.80Fingerite
Cu
 
11
(VO
 
4
)
 
6
O
 
2
8.BB.85Averievite
Cu
 
6
(VO
 
4
)
 
2
O
 
2
Cl
 
2
8.BB.90Lipscombite
(Fe
2+
 
,Mn
2+
 
)Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
8.BB.90Richellite
CaFe
3+
2
(PO
 
4
)
 
2
(OH,F)
 
2
8.BB.90Zinclipscombite
ZnFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2

Other Names for Stanĕkite

Synonyms:
IMA1994-045Stanekite
Other Languages:
Russian:Станекит

Polytypes for Stanĕkite

Polytypes:
Stanĕkite-Ma2bcStanĕkite-Mabc

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 Stanĕkite

Reference List:

- +
Keller, P., Fontan, F., Velasco-Roldan, F., Melgarejo i Draper, J. C. (1997): Stanĕkite, Fe3+(Mn,Fe2+,Mg)(PO4)O: a new phosphate mineral in pegmatites at Karibib (Namibia) and French Pyrénées (France). European Journal of Mineralogy 9, 475-482.

Keller, P., Lissner, F. & Schleid, T. (2005): The crystal structrure and polytypism of stanĕkite, (Fe3+,Mn,Fe2+)2(PO4)O. Z. Kristallogr., Suppl. No. 21, 158.

Internet Links for Stanĕkite

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    • Localities for Stanĕkite

    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.
    Hide Locality List
    (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.
    France
     
    • Languedoc-Roussillon
      • Pyrénées-Orientales
    		P. Keller, F. Fontan, F. Velasco Roldan, J.C. Melgarejo i Draper : "Stanĕkite a new Phosphate Mineral in Pegmatites at Karibib (Namibia) and French Pyrénées (France)", European Journal of Mineralogy, 1997, 9, 475-482
    Italy
     
    • Lombardy
      • Sondrio Province
    		Guastoni, A., et al., Mineralogical Magazine 71,579-585(2007)
    Namibia
     
    • Erongo Region
      • Karibib District
        • Okatjimukuju farm (Friedrichsfelde farm)
    		Keller, P., Fontan, F., Velasco-Roldan, F., Melgarejo i Draper, J. C. (1997): Stanĕkite, Fe3+(Mn,Fe2+,Mg)(PO4)O: a new phosphate mineral in pegmatites at Karibib (Namibia) and French Pyrénées (France). European Journal of Mineralogy 9, 475-482.
    Poland
     
    • Lower Silesia (Dolnośląskie)
      • Sowie Mts
    		Pieczka A., Łobos K., Sachanbiński M. 2004: The first occurence of elbaite in Poland. Mineralogia Polonica, vol. 35, 3-14
    Switzerland
     
    • Ticino (Tessin)
      • Lago Maggiore
    		Vignola, P., Diella, V., Oppizzi, P., Tiepolo, M. & Weiss, S. (2008): Phosphate assemblages from the Brissago granitic pegmatite, Western Southern Alps, Switzerland. Can. Mineral. 46, 635-650.
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