Schieffelinite
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About Schieffelinite
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.
Type Locality:
Isostructural with:
A chromate-analogue of schieffelinite is mentioned in Marty et al. (2010), and was later approved as chromschieffelinite.
Classification of Schieffelinite
Approved
Approval Year:
1979
4/K.17-20
7.CD.55
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
D : With only large cations
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
33 : SELENATES AND TELLURATES
3 : Compound Selenates and Tellurates
28.4.6
28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates
28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates
Physical Properties of Schieffelinite
Adamantine
Transparency:
Transparent, Translucent
Colour:
Colorless, milk-white
Hardness:
2 on Mohs scale
Cleavage:
Very Good
Easy on {010}
Easy on {010}
Density:
4.98(12) g/cm3 (Measured) 5.15 g/cm3 (Calculated)
Optical Data of Schieffelinite
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.
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v extreme
Chemical Properties of Schieffelinite
Formula:
Pb10Te6+6O20(OH)14(SO4)(H2O)5
Crystallography of Schieffelinite
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
Type Occurrence of Schieffelinite
General Appearance of Type Material:
Clusters of intergrown colorless or milk-white scales.
Place of Conservation of Type Material:
Smithsonian R18474
Geological Setting of Type Material:
In a shattered quartz vein.
Synonyms of Schieffelinite
Other Language Names for Schieffelinite
German:Schieffelinit
Spanish:Schieffelinita
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Nickel-Strunz Grouping
| 7.CD. | Campostriniite | (Bi3+,Na)3(NH4,K)2Na2(SO4)6·H2O | Mon. 2/m : B2/b |
| 7.CD.05 | Matteuccite | NaHSO4 · H2O | Mon. |
| 7.CD.10 | Mirabilite | Na2SO4 · 10H2O | Mon. 2/m |
| 7.CD.15 | Lecontite | (NH4,K)NaSO4 · 2H2O | Orth. 2 2 2 : P21 21 21 |
| 7.CD.20 | Hydroglauberite | Na10Ca3(SO4)8 · 6H2O | Mon. |
| 7.CD.25 | Eugsterite | Na4Ca(SO4)3 · 2H2O | Mon. |
| 7.CD.30 | Görgeyite | K2Ca5(SO4)6 · H2O | Mon. |
| 7.CD.35 | Koktaite | (NH4)2Ca(SO4)2 · H2O | Mon. |
| 7.CD.35 | Syngenite | K2Ca(SO4)2 · H2O | Mon. 2/m : P21/m |
| 7.CD.40 | Gypsum | CaSO4 · 2H2O | Mon. 2/m |
| 7.CD.45 | Bassanite | CaSO4 · 0.5H2O | Mon. 2 : B2 |
| 7.CD.50 | Zircosulfate | (Zr,Ti)(SO4)2 · 4H2O | Orth. |
| 7.CD.60 | Montanite | Bi2(TeO6) · 2H2O | |
| 7.CD.65 | Omongwaite | Na2Ca5(SO4)6 · 3H2O | Mon. 2 : B2 |
Related Minerals - Hey's Chemical Index of Minerals Grouping
| 28.4.1 | Xocomecatlite | Cu3(TeO4)(OH)4 | Orth. |
| 28.4.2 | Carlfriesite | CaTe4+2Te6+O8 | Mon. 2/m : B2/b |
| 28.4.3 | Yafsoanite | Ca3Zn3(TeO6)2 | Iso. m3 (2/m 3) |
| 28.4.4 | Tlalocite | Cu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2O | Orth. |
| 28.4.5 | Oboyerite | H6(Pb,Ca)6(Te4+O3)3(Te6+O6)2 · 2H2O | Tric. |
| 28.4.7 | Girdite | H2Pb3(Te4+O3)(Te6+O6) | Mon. m |
| 28.4.8 | Khinite | Pb2+Cu2+3[Te6+O6](OH)2 | Orth. mm2 : Fdd2 |
| 28.4.9 | Khinite-3T | Pb2+Cu2+3Te6+O6(OH)2 | Trig. 3 : P32 |
| 28.4.10 | Dugganite | Pb3Zn3(AsO4)2(TeO6) | Trig. 3 2 : P3 2 1 |
| 28.4.11 | Kuksite | Pb3Zn3(PO4)2(TeO6) | Trig. 3 2 : P3 2 1 |
| 28.4.12 | Cheremnykhite | Pb3Zn3(VO4)2(TeO6) | Orth. |
| 28.4.13 | Tlapallite | H6(Ca,Pb)2(Cu,Zn)3(TeO3)4(TeO6)(SO4) | |
| 28.4.14 | Montanite | Bi2(TeO6) · 2H2O | |
| 28.4.15 | Kuranakhite | PbMn4+Te6+O6 | Orth. |
| 28.4.16 | Cuzticite | Fe3+2(TeO6) · 3H2O | Hex. |
| 28.4.17 | Yecoraite | Fe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O |
Other Information
Health Risks:
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:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Williams, S.A. (1980a), Schieffelinite, a new lead tellurate-sulfate from Tombstone, AZ, Mineralogical Magazine: 43: 771-773.
American Mineralogist (1981): 66: 219.
Marty, J., Kampf, A. R., Housley, R. M., Mills, S. J. & Weiß, S.. (2010). Seltene neue Tellurmineralien aus Kalifornien, Utah, Arizona und New Mexiko (USA). Lapis, 35 (12), 42-51; 66.
Internet Links for Schieffelinite
mindat.org URL:
https://www.mindat.org/min-3566.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Schieffelinite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for 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).
All localities listed without proper references should be considered as questionable.
China | |
| Jiuling Li, Makovicky, E., Rose Hansen, J., Petersen, S.B., Feng Qi, Yanhe Cui, and Qingsheng Xu (2001): Geoscience 15(2), 189-196 |
USA | |
| Rocks & Min.:57:12. |
| In the collection of Brent Thorne | |
| 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, Mineralogical Magazine: 43: 771-773; Rocks & Min.:57:16. |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.:76 |
Grand Central Mine, Contention-Grand Central Mine group, Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA