Schieffelinite Mineral Data + 
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- 33.3.1.1 Schieffelinite Pb(Te,S)O4·(H2O) C mcm 2/m 2/m 2/m
- IV/K.17-10 Tlapallite H6(Ca,Pb)2Cu3(SO4)(TeO3)4(TeO6) Unk Mono
- IV/K.17-20 Schieffelinite Pb(Te,S)O4·(H2O) C mcm 2/m 2/m 2/m
General Schieffelinite Information |
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 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: |
PbTe0.75S0.25O4·(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. | ||
Schieffelinite Image | |||
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Images:
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Schieffelinite Crystallography |
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| 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 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 9.778(1), 3.25(0.6), 3.426(0.6), | ||
Physical Properties of Schieffelinite |
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| Cleavage: |
[010] Good | ||
| Color: |
Colorless, White. | ||
| Density: |
4.98 | ||
| Diaphaniety: |
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 |
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| 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 |
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| 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 |
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| Electron Density: |
relectron=4.48 gm/cc |
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| Fermion Index |
Fermion Index = 0.13624 Boson Index = 0.86376 |
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| Photoelectric: |
PESchieffelinite =1,040.40 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Schieffelinite is Not Radioactive |
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Schieffelinite Classification |
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| Dana Class: |
33.3.1.1 (33)Selenates and Tellurates | ||
| (33.3)with other anion groups | |||
| (33.3.1)Dana Group | |||
| Strunz Class: |
IV/K.17-20 IV - Oxides | ||
| IV/K - Complex Tellurides with [TeO6]6-, [TeO3]2- and [TeO4]2- groups | |||
| IV/K.17 - Tlapallite series | |||
Other Schieffelinite Information |
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| 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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Schieffelinite using: Visit our Advertisers for Schieffelinite : Translate Schieffelinite Mineral Data : Ask about Schieffelinite here : Print or Cut-and-Paste your Schieffelinite Specimen Label here :
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