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Schieffelinite

A valid IMA mineral species
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About SchieffeliniteHide

02275230014946273214647.jpg
Ed Schieffelin
Formula:
Pb10Te6+6O20(OH)14(SO4)(H2O)5
Colour:
Colorless, milk-white
Lustre:
Adamantine
Hardness:
2
Specific Gravity:
4.98
Crystal System:
Orthorhombic
Name:
Named after Ed Schieffelin (1847-1897), the prospector who discovered the Tombstone mining district.
Isostructural with:
A chromate-analogue of schieffelinite is mentioned in Marty et al. (2010), and was later approved as chromschieffelinite. Chemically somewhat reminds adanite, northstarite, and eztlite.


Unique IdentifiersHide

Mindat ID:
3566
Long-form identifier:
mindat:1:1:3566:4
GUID
(UUID V4):
48faa3e2-4eb5-4a7e-aa5d-545d3d9c15f5

IMA Classification of SchieffeliniteHide

Classification of SchieffeliniteHide

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 ed.:
33.3.1.1
33.3.1.1

33 : SELENATES AND TELLURATES
3 : Compound Selenates and Tellurates
28.4.6

28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
SflIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of SchieffeliniteHide

Adamantine
Transparency:
Transparent, Translucent
Colour:
Colorless, milk-white
Streak:
White
Hardness:
Cleavage:
Very Good
Easy on {010}
Density:
4.98(12) g/cm3 (Measured)    5.15 g/cm3 (Calculated)

Optical Data of SchieffeliniteHide

Type:
Biaxial (-)
RI values:
nα = 1.897 nβ = 1.940 nγ = 1.942
2V:
Measured: 24° , Calculated: 22°
Max Birefringence:
δ = 0.045
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v extreme
Optical Extinction:
X = b; Y = c; Z = a.

Chemistry of SchieffeliniteHide

Mindat Formula:
Pb10Te6+6O20(OH)14(SO4)(H2O)5

Crystallography of SchieffeliniteHide

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

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0018765SchieffeliniteKampf A R, Mills S J, Housley R M, Rumsey M S, Spratt J (2012) Lead-tellurium oxysalts from Otto Mountain near Baker, California: VII. Chromschieffelinite, Pb10Te6O20(OH)14(CrO4)(H2O)5, the chromate analog of schieffelinite American Mineralogist 97 212-2192012Otto Mountain near Baker, California, USA0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.778 Å(100)
3.426 Å(60)
3.250 Å(60 broad)
3.560 Å(50 broad)
3.338 Å(50)
3.033 Å(50)
2.934 Å(50)
Comments:
Joe mine, Tombstone, Arizona, USA. Data are from the type description.

Geological EnvironmentHide

Paragenetic Mode(s):

Type Occurrence of SchieffeliniteHide

General Appearance of Type Material:
Clusters of intergrown colorless or milk-white scales.
Place of Conservation of Type Material:
Natural History Museum, Paris, France.
The Natural History Museum, London, England, 1980,539.
University of Arizona Mineral Museum, Tucson, Arizona, USA.
National Museum of Natural History, Washington, D.C., USA, R18474.
Geological Setting of Type Material:
In a shattered quartz vein.
Associated Minerals at Type Locality:
Reference:
Williams, S.A. (1980) Schieffelinite, a new lead tellurate-sulfate from Tombstone, Arizona. Mineralogical Magazine: 43: 771-773.

Synonyms of SchieffeliniteHide

Other Language Names for SchieffeliniteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Schieffelinite associated with RodalquilariteFe2(TeO2OH)3(TeO3)Cl
2 photos of Schieffelinite associated with GirditeH2Pb3(Te4+O3)(Te6+O6)
1 photo of Schieffelinite associated with EmmonsiteFe3+2(TeO3)3 · 2H2O
1 photo of Schieffelinite associated with CerussitePbCO3
1 photo of Schieffelinite associated with ChlorargyriteAgCl
1 photo of Schieffelinite associated with OttoitePb2TeO5
1 photo of Schieffelinite associated with FlaggitePb4Cu2+4Te6+2(SO4)2O11(OH)2(H2O)

Related Minerals - Strunz-mindat GroupingHide

7.CD.Argesite(NH4)7Bi3Cl16 Trig. 3m (3 2/m) : R3c
7.CD.Campostriniite(Bi3+,Na)3(NH4,K)2Na2(SO4)6 · H2OMon. 2/m : B2/b
7.CD.05MatteucciteNaHSO4 · H2OMon. m
7.CD.10MirabiliteNa2SO4 · 10H2OMon. 2/m : P21/b
7.CD.15Lecontite(NH4,K)NaSO4 · 2H2OOrth. 2 2 2 : P21 21 21
7.CD.20HydroglauberiteNa10Ca3(SO4)8 · 6H2OMon.
7.CD.25EugsteriteNa4Ca(SO4)3 · 2H2OMon.
7.CD.30GörgeyiteK2Ca5(SO4)6 · H2OMon. 2/m : B2/b
7.CD.35Koktaite(NH4)2Ca(SO4)2 · H2OMon. 2/m : P21/b
7.CD.35SyngeniteK2Ca(SO4)2 · H2OMon. 2/m : P21/m
7.CD.35AntofagastaiteNa2Ca(SO4)2 · 1.5H2OMon. 2/m : P21/m
7.CD.40GypsumCaSO4 · 2H2OMon. 2/m
7.CD.45BassaniteCa(SO4) · 0.5H2OMon. 2 : B2
7.CD.45Chinleite-(Y)NaY(SO4)2 · H2OTrig. 3 2
7.CD.45Chinleite-(Nd)NaNd(SO4)2 · H2OTrig. 3 2 : P32 2 1
7.CD.50Zircosulfate(Zr,Ti)(SO4)2 · 4H2OOrth. mmm (2/m 2/m 2/m) : Fddd
7.CD.60MontaniteBi2(TeO6) · nH2OHex. 6 : P6
7.CD.65OmongwaiteNa2Ca5(SO4)6 · 3H2OMon. 2 : B2

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for SchieffeliniteHide

References for SchieffeliniteHide

Localities for SchieffeliniteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
China
 
  • Hebei
    • Zhangjiakou
      • Chongli District
        • Shuiquangou Complex
Jiuling Li et al. (2001)
Wang et al. (2019)
Russia
 
  • Sverdlovsk Oblast
    • Serovsky District
Kasatkin et al. (2023)
USA
 
  • Arizona
    • Cochise County
      • Tombstone Mining District
        • Contention-Grand Central Mine group
Rocks & Min.:57:12.
In the collection of Brent Thorne
Rocks & Min.:57:16. +2 other references
Anthony et al. (1995)
  • California
    • San Bernardino County
      • Silver Lake Mining District
        • Soda Mountains
          • Baker
Kampf et al. (2010)
 
Mineral and/or Locality  
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