Fuettererite
A valid IMA mineral species
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About Fuettererite
Formula:
Pb3Cu2+6Te6+O6(OH)7Cl5
Colour:
Bluish green
Lustre:
Adamantine
Hardness:
2 - 3
Specific Gravity:
5.528 (Calculated)
Crystal System:
Trigonal
Name:
Named in honor of Otto Fuetterer (born ca. 1880, Germany; died ca. 1970, USA) who is largely responsible for the development of the mining claims on Otto Mountain, the type locality. The mountain is also named after Mr Fuetterer.
Elemental combination is rather unique, only slightly resembling that in quetzalcoatlite.
The structure is based on double spangolite-type sheets; the sheets are composed of two types of octahedra: CuO5Cl (typically with Jahn-Teller distortions) and TeO6. These sheets alternate with other type of double layers comprising PbO2Cl6 polyhedra, that have lopsided distribution of bond lengths (lone-pair effect).
The structure is based on double spangolite-type sheets; the sheets are composed of two types of octahedra: CuO5Cl (typically with Jahn-Teller distortions) and TeO6. These sheets alternate with other type of double layers comprising PbO2Cl6 polyhedra, that have lopsided distribution of bond lengths (lone-pair effect).
Unique Identifiers
Mindat ID:
42738
Long-form identifier:
mindat:1:1:42738:2
IMA Classification of Fuettererite
Approved
IMA Formula:
Pb2+3Cu2+6Te6+O6(OH)7Cl5
Approval year:
2012
First published:
2013
Type description reference:
Classification of Fuettererite
4.FE.50
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
E : Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
E : Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Fue | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Fuettererite
Adamantine
Colour:
Bluish green
Streak:
Pale bluish-green
Hardness:
2 - 3 on Mohs scale
Comment:
Estimated at between 2 and 3
Tenacity:
Brittle
Cleavage:
Perfect
on {001}.
on {001}.
Fracture:
Irregular/Uneven
Density:
5.528 g/cm3 (Calculated)
Optical Data of Fuettererite
Type:
Uniaxial (-)
RI values:
nω = 2.04 nε = 1.97
Max. Birefringence:
δ = 0.070
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Comments:
Dichroic bluish-green, E < O.
Chemistry of Fuettererite
Mindat Formula:
Pb3Cu2+6Te6+O6(OH)7Cl5
Element Weights:
Crystallography of Fuettererite
Crystal System:
Trigonal
Class (H-M):
3 - Pyramidal
Space Group:
R3
Setting:
R3
Cell Parameters:
a = 8.4035(12) Å, c = 44.681(4) Å
Ratio:
a:c = 1 : 5.317
Unit Cell V:
2732.6 ų
Z:
6
Morphology:
Tabular to short prismatic, exhibit the forms {100}, {101}, and {001} and reach a maximum dimension of 50 μm.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0019763 | Fuettererite | Kampf A R, Mills S J, Housley R M, Marty J (2013) Lead-tellurium oxysalts from Otto Mountain near Baker, California: VIII. Fuettererite, Pb3Cu2+6Te6+O6(OH)7Cl5, a new mineral with double spangolite-type sheets American Mineralogist 98 506-511 | 2013 | Otto Mountain near Baker, California, USA | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.106 Å | (44) |
| 3.733 Å | (100) |
| 2.749 Å | (53) |
| 2.669 Å | (49) |
| 2.529 Å | (41) |
| 1.964 Å | (87) |
| 1.900 Å | (48) |
| 1.584 Å | (44) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47e : [Vanadates, chromates, manganates] | |
| 47g : [Halogen-bearing surface weathering minerals] |
Geological Setting:
Bird Nest drift specimen
Type Occurrence of Fuettererite
Place of Conservation of Type Material:
Mineral Sciences Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California 90007, USA, catalogue numbers 63588 and 63589
Geological Setting of Type Material:
In vugs in quartz; originated by partial oxidation of primary sulfide and telluride minerals during/following brecciation of the quartz veins
Associated Minerals at Type Locality:
Synonyms of Fuettererite
Other Language Names for Fuettererite
Dutch:Fuettereriet
German:Fuettererit
Common Associates
Associations Based on Photo Data:
| 4 photos of Fuettererite associated with Bairdite | Pb2Cu2+4Te6+2O10(OH)2(SO4) · H2O |
| 4 photos of Fuettererite associated with Timroseite | Pb2Cu5(TeO6)2(OH)2 |
| 3 photos of Fuettererite associated with Thorneite | Pb6(Te6+2O10)(CO3)Cl2(H2O) |
| 3 photos of Fuettererite associated with Hagstromite | Pb8Cu2+(Te6+O6)2(CO3)Cl4 |
| 2 photos of Fuettererite associated with Backite | Pb2AlTeO6Cl |
Related Minerals - Strunz-mindat Grouping
| 4.FE. | Nannoniite | Al2(OH)5F |
| 4.FE.05 | Brucite | Mg(OH)2 |
| 4.FE.05 | Theophrastite | Ni(OH)2 |
| 4.FE.05 | Amakinite | Fe2+(OH)2 |
| 4.FE.05 | Portlandite | Ca(OH)2 |
| 4.FE.05 | Pyrochroite | Mn(OH)2 |
| 4.FE.10 | Doyleite | Al(OH)3 |
| 4.FE.10 | Bayerite | Al(OH)3 |
| 4.FE.10 | Nordstrandite | Al(OH)3 |
| 4.FE.10 | Gibbsite | Al(OH)3 |
| 4.FE.15 | Lepidocrocite | Fe3+O(OH) |
| 4.FE.15 | Böhmite | AlO(OH) |
| 4.FE.20 | Heterogenite | Co3+O(OH) |
| 4.FE.20 | Grimaldiite | CrO(OH) |
| 4.FE.25 | Lithiophorite | (Al,Li)MnO2(OH)2 |
| 4.FE.25 | Feitknechtite | Mn3+O(OH) |
| 4.FE.30 | Quenselite | PbMnO2(OH) |
| 4.FE.35 | Ferrihydrite | Fe3+10O14(OH)2 |
| 4.FE.40 | Vernadite | (Mn4+,Fe3+,Ca,Na)(O,OH)2 · nH2O |
| 4.FE.40 | Feroxyhyte | Fe3+O(OH) |
| 4.FE.45 | Quetzalcoatlite | Zn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y |
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.
Internet Links for Fuettererite
mindat.org URL:
https://www.mindat.org/min-42738.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Fuettererite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2012) New minerals and nomenclature modifications approved in 2012. CNMNC Newsletter No 13. Mineralogical Magazine, 76 (3) 807-817 doi:10.1180/minmag.2012.076.3.26
Localities for Fuettererite
Showing 4 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
USA | |
| Marek Chorazewicz (2022) |
| Collected by Chuck Adan. EDS confirmed ... +1 other reference | |
| Housley R. +2 other references | |
| Collected by John Hangstrom. EDS ... |
Quick NavTopAbout FuettereriteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Bird Nest drift, Otto Mountain, Baker, Soda Mountains, Silver Lake Mining District, San Bernardino County, California, USA