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Schieffelinite

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Grand Central Mine, Contention-Grand Central Mine group, Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA
© JBS 2006

Show Schieffelinite Photos (9)
Formula:
Pb
 
8
(TeO
 
4
)
 
5
(SO
 
4
)
 
3
·8H
 
2
O
System:OrthorhombicColour:Colorless, milk-white
Hardness:2
Name:
Named after Ed Schieffelin (1847-1897), the prospector who discovered the Tombstone mining district.
This page provides mineralogical data about Schieffelinite.

Classification of Schieffelinite

IMA status:Approved 1979
Strunz 8th edition ID:4/K.17-20
Nickel-Strunz 10th (pending) edition ID:7.CD.55

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
D : With only large cations
Dana 7th edition ID:33.3.1.1
Dana 8th edition ID:33.3.1.1

33 : SELENATES AND TELLURATES
3 : Compound Selenates and Tellurates
Hey's CIM Ref.:28.4.6

28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates
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Type Occurrence of Schieffelinite

Type Locality:Joe Mine (Joe shaft), Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA
General Appearance of Type Material:Clusters of intergrown colorless or milk-white scales.
Place of Conservation of Type Material:Smithsonian R18474
Year of Discovery:1980
Geological Setting of type material:In a shattered quartz vein.

Physical Properties of Schieffelinite

Lustre:Adamantine
Diaphaneity (Transparency):Transparent, Translucent
Colour:Colorless, milk-white
Hardness (Mohs):2
Cleavage:Very Good
Easy on {010}
Density (measured):4.98(12) g/cm3
Density (calculated):5.15 g/cm3

Crystallography of Schieffelinite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Cmcm {C2/m 2/c 21/m}
Space Group Setting:Cmcm
Cell Parameters:a = 9.67Å, b = 19.56Å, c = 10.47Å
Ratio:a:b:c = 0.494 : 1 : 0.535
Unit Cell Volume:V 1,980.35 ų (Calculated from Unit Cell)
Z:16
Morphology:Platy or scaly to 1mm

Optical Data of Schieffelinite

Type:Biaxial (-)
RI values: nα = 1.897 nβ = 1.940 nγ = 1.942
2V:Measured: 24° , Calculated: 22°
Maximum Birefringence:δ = 0.045

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

Chemical Properties of Schieffelinite

Formula:
Pb
 
8
(TeO
 
4
)
 
5
(SO
 
4
)
 
3
·8H
 
2
O
Essential elements:H, O, Pb, S, Te
All elements listed in formula:H, O, Pb, S, Te

Relationship of Schieffelinite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.CD.05Matteuccite
NaHSO
 
4
·H
 
2
O
7.CD.10Mirabilite
Na
 
2
SO
 
4
·10H
 
2
O
7.CD.15Lecontite
(NH
 
4
,K)Na(SO
 
4
)·2H
 
2
O
7.CD.20Hydroglauberite
Na
 
10
Ca
 
3
(SO
 
4
)
 
8
·6H
 
2
O
7.CD.25Eugsterite
Na
 
4
Ca(SO
 
4
)
 
3
·2H
 
2
O
7.CD.30Görgeyite
K
 
2
Ca
 
5
(SO
 
4
)
 
6
·H
 
2
O
7.CD.35Koktaite
(NH
 
4
)
 
2
Ca(SO
 
4
)
 
2
·H
 
2
O
7.CD.35Syngenite
K
 
2
Ca(SO
 
4
)
 
2
·H
 
2
O
7.CD.40Gypsum
Ca[SO
 
4
] · 2H
 
2
O
7.CD.45Bassanite
Ca[SO
 
4
] · 0.5H
 
2
O
7.CD.50Zircosulfate
(Zr,Ti)(SO
 
4
)
 
2
·4H
 
2
O
7.CD.60Montanite
Bi
 
2
[TeO
 
6
] · 2H
 
2
O
7.CD.65Omongwaite
Na
 
2
Ca
 
5
(SO
 
4
)
 
6
·3H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
28.4.1Xocomecatlite
Cu
 
3
[(OH)
 
4
|TeO
 
4
]
28.4.2Carlfriesite
CaTe
 
3
O
 
8
28.4.3Yafsoanite
Ca
 
3
Zn
 
3
[TeO
 
6
]
 
2
28.4.4Tlalocite
Cu
 
10
Zn
 
6
(TeO
 
3
)(TeO
 
4
)
 
2
Cl(OH)
 
25
·27H
 
2
O
28.4.5Oboyerite
Pb
 
6
H
 
6
[(Te
4+
 
O
 
3
)
 
3
|(Te
6+
 
O
 
6
)
 
2
] · 2H
 
2
O
28.4.7Girdite
Pb
 
3
H
 
2
[Te
4+
 
O
 
3
|Te
6+
 
O
 
6
]
28.4.8Khinite
Pb
2+
 
Cu
2+
3
(TeO
 
6
)(OH)
 
2
28.4.9Parakhinite
Pb
2+
 
Cu
2+
3
TeO
 
6
(OH)
 
2
28.4.10Dugganite
Pb
 
3
Zn
 
3
(Te
6+
 
O
 
6
)(AsO
 
4
)
 
2
28.4.11Kuksite
Pb
 
3
Zn
 
3
TeO
 
6
(PO
 
4
)
 
2
28.4.12Cheremnykhite
Pb
 
3
Zn
 
3
TeO
 
6
(VO
 
4
)
 
2
28.4.13Tlapallite
H
 
6
(Ca,Pb)
 
2
(Cu,Zn)
 
3
SO
 
4
(TeO
 
3
)
 
4
TeO
 
6
28.4.14Montanite
Bi
 
2
[TeO
 
6
] · 2H
 
2
O
28.4.15Kuranakhite
PbMn
4+
 
Te
6+
 
O
 
6
28.4.16Cuzticite
Fe
3+
2
[TeO
 
6
] · 3H
 
2
O
28.4.17Yecoraite
Fe
3+
3
(BiO)
 
5
(Te
4+
 
O
 
3
)(Te
6+
 
O
 
6
)
 
2
 · 9H
 
2
O

Other Names for Schieffelinite

Synonyms:
IMA1979-043
Other Languages:
German:Schieffelinit
Spanish:Schieffelinita

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 Schieffelinite

Reference List:Williams, S.A. (1980a), Schieffelinite, a new lead tellurate-sulfate from Tombstone, AZ, Mineralogical Magazine: 43: 771-773.

American Mineralogist (1981): 66: 219.

Internet Links for Schieffelinite

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    Localities for Schieffelinite

    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.
    (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.
    USA
     
    • Arizona
      • Cochise Co.
        • Tombstone Hills
          • Tombstone District
            • Contention-Grand Central Mine group
    		Rocks & Min.:57:12.
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 364; Williams, S.A. (1980a), Schieffelinite, a new lead tellurate-sulfate from Tombstone, AZ, Min.Mag.: 43: 771-773; Rocks & Min.:57:16.
    Mineral and/or Locality
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