Schieffelinite Mineral Data

General Schieffelinite Information

Chemical Formula:

Pb(Te++++++,S)O4•(H2O)

Composition:

Molecular Weight = 392.93 gm

Tellurium 24.36 % Te 30.46 % TeO₂

Hydrogen 0.51 % H 4.58 % H₂O

Lead 52.73 % Pb 56.80 % PbO

Sulfur 2.04 % S 5.09 % SO₃

Oxygen 20.36 % O

______ ______

100.00 % 96.95 % = TOTAL OXIDE

Empirical Formula:

PbTe_0.75S_0.25O₄•(H₂O)

Environment:

Secondary mineral found in the oxidized portions of telluide-bearing minerals.

IMA Status:

Approved IMA 1980

Locality:

Joe and Grand Central mines, Tombstone, Arizona, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Ed Schieffelin (1847-1897), stagecoach driver and prospector who discovered the Tombstone district mines.

Name Pronunciation:

Schieffelinite + Pronunciation

Schieffelinite Image

Images:

Click Here for Larger Schieffelinite Image

Schieffelinite Rodalquilarite

Comments: Creamy white Schieffelinite with minor green rodalquilarite.
Location: Tombstone, Tombstone District, Cochise Co., Arizona, USA. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Schieffelinite Crystallography

Axial Ratios:

a:b:c =0.4943:1:0.5352

Cell Dimensions:

a = 9.67, b = 19.56, c = 10.47, Z = 16; V = 1,980.35 Den(Calc)= 5.27

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C mcm

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 9.778(1), 3.25(0.6), 3.426(0.6),

Physical Properties of Schieffelinite

Cleavage:

{010} Good

Color:

Colorless, White.

Density:

4.98

Diaphaneity:

Transparent

Habit:

Platy - Sheet forms (e.g. micas).

Habit:

Scaly - Morphology like fish scales.

Hardness:

2 - Gypsum

Luminescence:

Non-fluorescent.

Luster:

Adamantine

Streak:

white

Optical Properties of Schieffelinite

Gladstone-Dale:

CI meas= -0.153 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.089 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1758,KPDmeas= 0.186,KC= 0.1614
Ncalc = 1.8 - 1.85

Optical Data:

Biaxial (-), a=1.897, b=1.94, g=1.942, bire=0.0450, 2V(Calc)=22, 2V(Meas)=24. Dispersion r < v marked.

Calculated Properties of Schieffelinite

Electron Density:

Bulk Density (Electron Density)=4.48 gm/cc
note: Specific Gravity of Schieffelinite =5.27 gm/cc.

Fermion Index:

Fermion Index = 0.13
Boson Index = 0.87

Photoelectric:

PE_{Schieffelinite}=1,040.40 barns/electron
U=PE_{Schieffelinite} x rElectron Density=4,660.63 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Schieffelinite is Not Radioactive

Schieffelinite Classification

Dana Class:

33.03.01.01 (33)Selenates and Tellurates

(33.03)with other anion groups

(33.03.01)Dana Group

33.03.01.01 Schieffelinite Pb(Te,S)O4•(H2O) C mcm 2/m 2/m 2/m

Strunz Class:

07.CD.55 07 - SULFATES (SELENATES, TELLURATES)

07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O

07.CD -With only large cations

07.CD.55 Schieffelinite Pb(Te,S)O4•(H2O) C mcm 2/m 2/m 2/m

Other Schieffelinite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Schieffelinite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Schieffelinite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Schieffelinite :

A Bijoux Google Search for Schieffelinite
Adam's Minerals Google Search for Schieffelinite
Cape Minerals Google Search for Schieffelinite
Dakota Matrix Minerals Google Search for Schieffelinite
Excalibur Mineral Corp. Google Search for Schieffelinite
Exceptional Minerals Google Search for Schieffelinite
John Betts Fine Minerals Search for Schieffelinite
McDougall Minerals Google Search for Schieffelinite
Mineral News Website Link
Rock and Mineral Shows Google Search for Schieffelinite
Weinrich Minerals, Inc. Google Search for Schieffelinite

Ask about Schieffelinite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Schieffelinite Specimen Label here :

Schieffelinite

Pb(Te++++++,S)O4•(H2O)
Dana No: 33.03.01.01 Strunz No: 07.CD.55
Locality:

Notes: