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Stranskiite

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Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
© Brent Thorne

Show Stranskiite Photos (5)
Formula:
(Zn,Cu)
 
3
[AsO
 
4
]
 
2
System:TriclinicColour:Cyan-blue
This page provides mineralogical data about Stranskiite.

Classification of Stranskiite

IMA status:Approved
Strunz 8th edition ID:7/A.09-20
Nickel-Strunz 10th (pending) edition ID:8.AB.35

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
Dana 7th edition ID:38.3.7.1
Dana 8th edition ID:38.3.7.1

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
3 : (AB)3(XO4)2
Hey's CIM Ref.:20.3.7

20 : Arsenates (also arsenates with phosphate, but without other anions)
3 : Arsenates of Zn, Cd or Hg
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Type Occurrence of Stranskiite

Type Locality:Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
Year of Discovery:1960

Physical Properties of Stranskiite

Colour:Cyan-blue

Crystallography of Stranskiite

Crystal System:Triclinic
Cell Parameters:a = 5.07Å, b = 6.66Å, c = 5.26Å
α = 109.85°, β = 112.14°, γ = 86.88°
Ratio:a:b:c = 0.761 : 1 : 0.79
Unit Cell Volume:V 154.19 ų (Calculated from Unit Cell)

Optical Data of Stranskiite

Type:Biaxial (-)
RI values: nα = 1.795 nβ = 1.842 nγ = 1.874
2V:Measured: 80° , Calculated: 76°
Maximum Birefringence:δ = 0.079

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

Chemical Properties of Stranskiite

Formula:
(Zn,Cu)
 
3
[AsO
 
4
]
 
2
Essential elements:As, O, Zn
All elements listed in formula:As, Cu, O, Zn

Relationship of Stranskiite to other Species

Related Minerals - Nickel-Strunz Grouping):
8.AB.05Farringtonite
Mg
 
3
[PO
 
4
]
 
2
8.AB.10Ferrisicklerite
(Fe
3+
 
,LiMn
2+
 
)[PO
 
4
]
8.AB.10Heterosite
(Fe
3+
 
,Mn
3+
 
)[PO
 
4
]
8.AB.10Lithiophilite
LiMn
2+
 
[PO
 
4
]
8.AB.10Natrophilite
NaMn
2+
 
[PO
 
4
]
8.AB.10Purpurite
(Mn
3+
 
,Fe
3+
 
)[PO
 
4
]
8.AB.10Sicklerite
(LiMn
2+
 
,Fe
3+
 
)[PO
 
4
]
8.AB.10Simferite
Li(Mg,Fe
2+
 
,Mn
2+
 
)[PO
 
4
]
8.AB.10Triphylite
LiFe
2+
 
[PO
 
4
]
8.AB.15Sarcopside
(Fe
2+
 
,Mn
2+
 
,Mg)
 
3
[PO
 
4
]
 
2
8.AB.15Chopinite
(Mg,Fe
2+
 
)
 
3
[PO
 
4
]
 
2
8.AB.20Beusite
(Mn
2+
 
,Fe
2+
 
,Ca,Mg)
 
3
[PO
 
4
]
 
2
8.AB.20Graftonite
(Fe
2+
 
,Mn
2+
 
,Ca)
 
3
[PO
 
4
]
 
2
8.AB.25Xanthiosite
Ni
 
3
[AsO
 
4
]
 
2
8.AB.30Lammerite
Cu
 
3
[AsO
 
4
]
 
2
8.AB.35Mcbirneyite
Cu
 
3
(VO
 
4
)
 
2
8.AB.40Lyonsite
Cu
 
3
Fe
 
4
(VO
 
4
)
 
6
Related Minerals - Hey's Index Grouping:
20.3.1Adamite
Zn
 
2
(AsO
 
4
)(OH)
20.3.2Paradamite
Zn
 
2
[OH|AsO
 
4
]
20.3.3Koritnigite
Zn[HAsO
 
4
] · H
 
2
O
20.3.4Legrandite
Zn
 
2
[OH|AsO
 
4
] · H
 
2
O
20.3.5Warikahnite
Zn
 
3
(AsO
 
4
)
 
2
·2H
 
2
O
20.3.6Köttigite
Zn
 
3
(AsO
 
4
)
 
2
·8H
 
2
O
20.3.8Philipsburgite
(Cu,Zn)
 
6
[(OH)
 
3
|(AsO
 
4
,PO
 
4
)]
 
2
 · H
 
2
O
20.3.9Austinite
CaZn[OH|AsO
 
4
]
20.3.10Prosperite
CaZn
 
2
[OH|HAsO
 
4
|AsO
 
4
]
20.3.11Gaitite
Ca
 
2
Zn[AsO
 
4
]
 
2
 · 2H
 
2
O
20.3.12Zincroselite
Ca
 
2
Zn[AsO
 
4
]
 
2
 · 2H
 
2
O
20.3.13O'Danielite
Na(Zn,Mg)
 
3
H
 
2
(AsO
 
4
)
 
3
20.3.14Johillerite
Na(Mg,Zn)
 
3
Cu[AsO
 
4
]
 
3
20.3.15Holdenite
(Mn
2+
 
,Mg)
 
6
Zn
 
3
[(OH)
 
8
|(AsO
 
4
)
 
2
|SiO
 
4
]
20.3.16Chudobaite
(Na,K)(Mg,Zn)
 
2
H(AsO
 
4
)(OH,O)
 
6
20.3.17Chlorophoenicite
(Mn,Mg)
 
3
Zn
 
2
(AsO
 
4
)(OH,O)
 
6
20.3.18Lotharmeyerite
Ca(Zn,Mn
3+
 
)
 
2
[AsO
 
4
]
 
2
 · 2(H
 
2
O,OH)
20.3.19Metaköttigite
(Zn,Fe,Fe)
 
3
(AsO
 
4
)
 
2
·8(H
 
2
O,OH)
20.3.20Ojuelaite
ZnFe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
20.3.21Fahleite
Zn
 
5
CaFe
 
2
(AsO
 
4
)
 
6
·14H
 
2
O
20.3.22Keyite
(Cu,Zn,Cd)
 
3
(AsO
 
4
)
 
2

Other Names for Stranskiite

German names:
Stranskiit
Russian names:
Странскиит
Spanish names:
Stranskiita

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 Stranskiite

Reference List:American Mineralogist (1960): 45: 1315.

American Mineralogist (1978): 63: 213-215.

Zeitschrift für Kristallographie: 124: 91-100.

Zeitschrift für Kristallographie: 130: 231-233.

Tschermaks Mineralogische und Petrographische Mitteilungen: 26(3): 167-174.

Internet Links for Stranskiite

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  • Stranskiite details from Handbook of Mineralogy (PDF)
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    Localities for Stranskiite

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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.
    Austria
     
    • Tyrol
      • North Tyrol
        • Inn valley
          • Brixlegg - Schwaz area
            • Brixlegg - Rattenberg
    		Schnorrer, G. & Poeverlein, R. (2005): Schwaz-Brixlegger-Fundstellen: 3. Die Minerale vom Bergbau Maukenötz bei Brixlegg, Tirol. Der Aufschluss, 56, 223-234.
    Germany
     
    • North Rhine-Westphalia
      • Sauerland
        • Iserlohn
          • Letmathe
    		Wittern: "Mineralfundorte in Deutschland", 2001
    • Rhineland-Palatinate
      • Lahn valley
    		Wittern: "Mineralfundorte in Deutschland", 2001
    Namibia
     
    • Otjikoto (Oshikoto) Region
      • Tsumeb
    		Naturwissenschaften,(1960) 47, 376; J.W. Anthony, R.A. Bideaux, K.W. Bladh, M.C. Nichols: Handbook of Mineralogy, Vol. IV (2000)
    Mineral and/or Locality
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