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Schaurteite

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Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
© 2004 ROM

Show Schaurteite Photos (11)
Formula:
Ca
 
3
Ge[(OH)
 
6
|(SO
 
4
)
 
2
] · 4H
 
2
O
System:HexagonalColour:White
Hardness:2½
Name:For German chemist, Werner T. Schaurte (1893-1978).


Fleischerite Group.

Classification of Schaurteite

IMA status:Approved
Strunz 8th edition ID:6/D.11-20
Nickel-Strunz 10th (pending) edition ID:7.DF.25

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations
Dana 8th edition ID:31.7.6.2

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
Hey's CIM Ref.:25.7.1

25 : Sulphates
7 : Sulphates of Pb
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Type Occurrence of Schaurteite

Type Locality:Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
Year of Discovery:1965

Physical Properties of Schaurteite

Lustre:Silky
Colour:White
Hardness (Mohs):2½

Crystallography of Schaurteite

Crystal System:Hexagonal
Cell Parameters:a = 8.52Å, c = 10.8Å
Ratio:a:c = 1 : 1.268
Unit Cell Volume:V 678.94 ų (Calculated from Unit Cell)

Optical Data of Schaurteite

Type:Uniaxial (+)
RI values: nω = 1.569 nε = 1.581
Maximum Birefringence:δ = 0.012

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

Chemical Properties of Schaurteite

Formula:
Ca
 
3
Ge[(OH)
 
6
|(SO
 
4
)
 
2
] · 4H
 
2
O
Essential elements:Ca, Ge, H, O, S
All elements listed in formula:Ca, Ge, H, O, S

Relationship of Schaurteite to other Species

Related Minerals - Nickel-Strunz Grouping):
7.DF.05Uklonskovite
NaMg[F|SO
 
4
] · 2H
 
2
O
7.DF.10Kainite
KMg[Cl|SO
 
4
] · 3H
 
2
O
7.DF.15Natrochalcite
NaCu
 
2
[OH|(SO
 
4
)
 
2
] · 2H
 
2
O
7.DF.20Metasideronatrite
Na
 
4
Fe
 
2
(SO
 
4
)
 
4
(OH)
 
2
·2H
 
2
O
7.DF.20Sideronatrite
Na
 
2
Fe(SO
 
4
)
 
2
OH·3H
 
2
O
7.DF.25Despujolsite
Ca
 
3
Mn
4+
 
[(OH)
 
6
|(SO
 
4
)
 
2
] · 3H
 
2
O
7.DF.25Fleischerite
Pb
 
3
Ge[(OH)
 
6
|(SO
 
4
)
 
2
] · 3H
 
2
O
7.DF.25Mallestigite
Pb
 
3
Sb
5+
 
[(OH)
 
6
|AsO
 
4
|SO
 
4
] · 3H
 
2
O
7.DF.30Slavíkite
NaMg
 
2
Fe
 
5
(SO
 
4
)
 
7
(OH)
 
6
·33H
 
2
O
7.DF.35Metavoltine
Na
 
6
K
 
2
FeFe
 
6
(SO
 
4
)
 
12
O
 
2
·18H
 
2
O
7.DF.40Lannonite
HCa
 
4
Mg
 
2
Al
 
4
(SO
 
4
)
 
8
F
 
9
·32H
 
2
O
7.DF.40Vlodavetsite
AlCa
 
2
[F
 
2
|Cl|(SO
 
4
)
 
2
] · 4H
 
2
O
7.DF.45Peretaite
Ca(SbO)
 
4
[(OH)|SO
 
4
]
 
2
 · 2H
 
2
O
7.DF.50Gordaite
NaZn[(OH)
 
6
|SO
 
4
|Cl] · 6H
 
2
O
7.DF.55Clairite
(NH
 
4
)
 
2
Fe
 
3
(SO
 
4
)
 
4
(OH)
 
3
·3H
 
2
O
7.DF.60Arzrunite
near Cu
 
4
Pb
 
2
SO
 
4
Cl
 
6
(OH)
 
4
·2H
 
2
O
7.DF.65Elyite
Pb
 
4
Cu(SO
 
4
)O
 
2
(OH)
 
4
·H
 
2
O
7.DF.70Yecoraite
Fe
3+
3
(BiO)
 
5
(Te
4+
 
O
 
3
)(Te
6+
 
O
 
6
)
 
2
 · 9H
 
2
O
7.DF.75Riomarinaite
Bi(OH)(SO
 
4
) * H
 
2
O
Related Minerals - Hey's Index Grouping:
25.7.2Zircosulfate
(Zr,Ti)(SO
 
4
)
 
2
·4H
 
2
O
25.7.3Anglesite
PbSO
 
4
25.7.4Lanarkite
Pb
 
2
[O|SO
 
4
]
25.7.5Palmierite
(K,Na)
 
2
Pb(SO
 
4
)
 
2
25.7.6Linarite
PbCu[(OH)
 
2
|SO
 
4
]
25.7.7Elyite
Pb
 
4
Cu(SO
 
4
)O
 
2
(OH)
 
4
·H
 
2
O
25.7.8Chenite
Pb
 
4
Cu[(OH)
 
3
|SO
 
4
]
 
2
25.7.9Osarizawaite
Pb(Al,Cu)
 
3
[(OH,H
 
2
O)
 
3
|SO
 
4
]
 
2
25.7.10Itoite
Pb
 
3
Ge
4+
 
[O|OH|SO
 
4
]
 
2
25.7.11Fleischerite
Pb
 
3
Ge[(OH)
 
6
|(SO
 
4
)
 
2
] · 3H
 
2
O
25.7.12Beaverite
Pb(Fe
3+
 
,Cu,Al)
 
3
[(OH)
 
3
|SO
 
4
]
 
2
25.7.13Plumbojarosite
PbFe
3+
6
[(OH)
 
3
|SO
 
4
]
 
4

Other Names for Schaurteite

German names:
Schaurteit
Spanish names:
Schaurteita

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 Schaurteite

Reference List:Strunz, H. & Tennyson, C. (1967): Schaurteit, ein neues Germaniun-Mineral von Tsumeb/SW-Afrika und seine Paragenese. In: Festschrift Dr. Werner Schaurte. Bauer & Schaurte, Eds., Neuss/Rhein (Germany), 33-47.

American Mineralogist (1967): 52: 926.

American Mineralogist (1968): 53: 507.

Mineralogical Magazine: 39: 377-389.

Internet Links for Schaurteite

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    Localities for Schaurteite

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    Namibia
     
    • Otjikoto (Oshikoto) Region
      • Tsumeb
    		Strunz, H. & Tennyson, C. (1967): Schaurteit, ein neues Germaniun-Mineral von Tsumeb/SW-Afrika und seine Paragenese. In: Festschrift Dr. Werner Schaurte. Bauer & Schaurte, Eds., Neuss/Rhein (Germany), 33-47.
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