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Fuettererite

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About FuettereriteHide

Formula:
Pb3Cu2+6Te6+O6(OH)7Cl5
Colour:
Bluish green
Lustre:
Adamantine
Hardness:
2 - 3
Specific Gravity:
5.528 (Calculated)
Crystal System:
Trigonal
Name:
Named for Otto Fuetterer who is largely responsible for the development of the mining claims on Otto Mountain, the TL.
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).


Classification of FuettereriteHide

Approved
Approval Year:
2012

Physical Properties of FuettereriteHide

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}.
Fracture:
Irregular/Uneven
Density:
5.528 g/cm3 (Calculated)

Optical Data of FuettereriteHide

Type:
Uniaxial (-)
RI values:
nω = 2.040 nε = 1.970
Max Birefringence:
δ = 0.070
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Comments:
Dichroic bluish-green, E < O.

Chemical Properties of FuettereriteHide

Formula:
Pb3Cu2+6Te6+O6(OH)7Cl5
IMA Formula:
Pb3Cu2+6Te6+O6(OH)7Cl5

Crystallography of FuettereriteHide

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.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.106 (44)
3.733 (100)
2.749 (53)
2.669 (49)
2.529 (41)
1.964 (87)
1.900 (48)
1.584 (44)

Type Occurrence of FuettereriteHide

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 FuettereriteHide

Common AssociatesHide

AnglesitePbSO4
AtacamiteCu2(OH)3Cl
Bromian ChlorargyriteAg(Cl,Br)
ChalcopyriteCuFeS2
ClinoatacamiteCu2(OH)3Cl
GalenaPbS
Goethiteα-Fe3+O(OH)
HematiteFe2O3
IodargyriteAgI
MuscoviteKAl2(AlSi3O10)(OH)2
PhosphohedyphaneCa2Pb3(PO4)3Cl
TelluroperitePb3TeO4Cl2
TimroseitePb2Cu5(TeO6)2(OH)2
WulfenitePb(MoO4)
Associated Minerals Based on Photo Data:
Bairdite2 photos of Fuettererite associated with Bairdite on mindat.org.
Timroseite1 photo of Fuettererite associated with Timroseite on mindat.org.

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.

References for FuettereriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R., Mills, S.J., Housley, R.M. and Marty, J. (2012) Fuettererite, IMA 2011-111. CNMNC Newsletter No. 13, June 2012, page 811; Mineralogical Magazine, 76, 807-817.
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.

Internet Links for FuettereriteHide

Localities for FuettereriteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
USA
 
  • California
    • San Bernardino Co.
      • Silver Lake District
        • Soda Mts
          • Baker
            • Otto Mountain
Collected by Chuck Adan. EDS confirmed by Bob Housley.; 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.
Kampf, A.R., Mills, S.J., Housley, R.M. and Marty, J. (2012) Fuettererite, IMA 2011-111. CNMNC Newsletter No. 13, June 2012, page 811; Mineralogical Magazine, 76, 807-817.; 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.; Housley R., pers.comm., May 2017
Collected by John Hangstrom. EDS analyzed by Bob Housley.
Mineral and/or Locality  
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