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Stetefeldtite

A valid IMA mineral species - grandfathered - questionable
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06089440017271926769722.jpg
Stetefeldtite

Belmont, Belmont Mining District, Toquima Range, Nye County, Nevada, USA
01728530017271926807838.jpg
Stetefeldtite

Alter Theuerdank Mine, Beerberg, St Andreasberg, Braunlage, Goslar District, Lower Saxony, Germany
06390510017271926836479.jpg
Stetefeldtite, etc.

Alter Theuerdank Mine, Beerberg, St Andreasberg, Braunlage, Goslar District, Lower Saxony, Germany
06089440017271926769722.jpg
Stetefeldtite

Belmont, Belmont Mining District, Toquima Range, Nye County, Nevada, USA
01728530017271926807838.jpg
Stetefeldtite

Alter Theuerdank Mine, Beerberg, St Andreasberg, Braunlage, Goslar District, Lower Saxony, Germany
06390510017271926836479.jpg
Stetefeldtite, etc.

Alter Theuerdank Mine, Beerberg, St Andreasberg, Braunlage, Goslar District, Lower Saxony, Germany
06089440017271926769722.jpg
Stetefeldtite

Belmont, Belmont Mining District, Toquima Range, Nye County, Nevada, USA
01728530017271926807838.jpg
Stetefeldtite

Alter Theuerdank Mine, Beerberg, St Andreasberg, Braunlage, Goslar District, Lower Saxony, Germany
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About StetefeldtiteHide

Formula:
Ag2Sb2(O,OH)7
Colour:
Brown, black, green, yellow
Lustre:
Earthy
Hardness:
3½ - 4½
Specific Gravity:
4.12 - 4.24
Crystal System:
Isometric
Name:
Named after Karl August Stetefeldt (28 September 1838, Holzhausen, near Gotha, Germany - 17 March 1896, Oakland, California, USA), mining engineer and metallurgist.
Very old references (Riotte 1867, Mason & Vitaliano 1953).
Probably 'argentoroméite'. This material needs to be examined chemically and structurally.


Unique IdentifiersHide

Mindat ID:
3769
Long-form identifier:
mindat:1:1:3769:9

IMA Classification of StetefeldtiteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959), Questionable
IMA Formula:
Ag2+2Sb5+2(O,OH)7
First published:
2013

Classification of StetefeldtiteHide

Strunz-mindat (2026):
4.DH.20

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
Dana 8th ed.:
44.1.1.5

44 : ANTIMONATES
1 : A2X2O6(O,OH,F)
Hey's CIM Ref.:
24.1.5

24 : Antimonates and Antimonites
1 : Antimonates and antimonites of Na, Cu or Ag

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
SfIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of StetefeldtiteHide

Lustre:
Earthy
Colour:
Brown, black, green, yellow
Streak:
Shiny yellow
Hardness:
3½ - 4½ on Mohs scale
Density:
4.12 - 4.24 g/cm3 (Measured)    

Chemistry of StetefeldtiteHide

Mindat Formula:
Ag2Sb2(O,OH)7
Element Weights:
Element% weight
Sb42.629 %
Ag37.766 %
O19.605 %

Calculated from ideal end-member formula.
Elements listed:
Ag, H, O, Sb - search for minerals with similar chemistry

Crystallography of StetefeldtiteHide

Crystal System:
Isometric

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47d : [Arsenates, antimonates, selenates, bismuthinates]
Stage 10b: Anthropogenic minerals<10 Ka
57 : Other minerals formed by human processes

Type Occurrence of StetefeldtiteHide

Synonyms of StetefeldtiteHide

Other Language Names for StetefeldtiteHide

Common AssociatesHide

Associations Based on Photo Data:
2 photos of Stetefeldtite associated with QuartzSiO2
2 photos of Stetefeldtite associated with PyrargyriteAg3SbS3
1 photo of Stetefeldtite associated with MimetitePb5(AsO4)3Cl

Related Minerals - Strunz-mindat GroupingHide

4.DH.Cesiokenopyrochlore◻Nb2(O,OH)6(Cs,◻) Iso. m3m(4/m32/m) : Fd3m
4.DH.Roméite GroupA2(Sb5+)2O6Z
4.DH.OxyplumboroméitePb2Sb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.Fluornatropyrochlore(Na,Pb,Ca,REE,U)2Nb2O6FIso. m3m(4/m32/m)
4.DH.Hydroxykenomicrolite(◻,Na,Sb3+)2Ta2O6(OH,Cs)Iso. m3m(4/m32/m) : Fd3m
4.DH.'Fluornatroroméite'(Na,Ca)2Sb2(O,OH)6F
4.DH.Oxyyttrobetafite-(Y)Y2Ti2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.05Thorutite(Th,U,Ca)Ti2(O,OH)6Mon.
4.DH.05OrthobranneriteU4+U6+Ti4O12(OH)2Orth.
4.DH.05BranneriteUTi2O6Mon. 2/m : B2/m
4.DH.10KassiteCaTi2O4(OH)2Mon. 2/m : P21/b
4.DH.10Lucasite-(La)Mon. 2 : B2
4.DH.10Lucasite-(Ce)CeTi2(O,OH)6Mon.
4.DH.15'Fluorhydropyrochlore'
4.DH.15Hydrokenoelsmoreite◻2W2O6(H2O)Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Hydroxynatromicrolite'(Na,Bi3+,◻)2Ta2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Hydroplumboelsmoreite(Pb,◻)(W,Fe3+)2O6 · H2OIso. m3m(4/m32/m) : Fd3m
4.DH.15Hydropyrochlore(H2O,◻)2Nb2(O,OH)6(H2O)Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Unnamed (Sb-analogue of Hydroxymanganopyrochlor)'(Mn,Ca,Y)2(Sb,Ti)2O6(OH)
4.DH.15Hydroxynatropyrochlore(Na,Ca,Ce)2Nb2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Hydrokenopyrochlore(◻,x)2Nb2O6(H2O,Cs)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Oxybismutomicrolite(Bi1.33◻0.67)Σ2Ta2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15Kenomicrolite◻2Ta2[O4(OH)2]◻Iso. m3m(4/m32/m) : Fd3m
4.DH.15Fluornatromicrolite(Na1.5Bi0.5)Ta2O6FIso. m3m(4/m32/m) : Fd3m
4.DH.15'Oxynatropyrochlore'(Na,Ca,U)2Nb2O6(O,OH)
4.DH.15Hydroxycalciopyrochlore(Ca,Na,U,◻)2(Nb,Ti)2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Fluorcalciopyrochlore(Ca,Na)2(Nb,Ti)2O6FIso.
4.DH.15OxycalciopyrochloreCa2Nb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15'Fluorstrontiopyrochlore'(Sr,◻)2Nb2(O,OH)6F
4.DH.15OxyplumbopyrochlorePb2Nb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15'Fluorplumbopyrochlore'(Pb,Y,Th,U,Na,Ca)2-x(Nb,Ti)2O6FIso.
4.DH.15'Bismutomicrolite (of Hogarth 1977)'Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Bismutopyrochlore (of Chukanov et al.)'(Bi,Ca,U,Pb)2-xNb2(O,OH)6(OH)Amor.
4.DH.15'Kenoplumbopyrochlore'(Pb,◻)Nb2O6(◻,O)
4.DH.15Hydroxyplumbopyrochlore (Pb1.5◻0.5)Nb2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Stibiomicrolite (of Groat et al.)'
4.DH.15'Oxyyttropyrochlore-(Y)'(Y,◻)2Nb2O6O
4.DH.15'Fluorkenopyrochlore'(◻,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
4.DH.15HydroxycalciomicroliteCa1.5Ta2O6(OH)Iso. 432 : P4232
4.DH.15'Strontiopyrochlore (of Hogarth 1977)'(Sr,Ce,Ca)0.66(Nb,Fe)2(O,OH)7
4.DH.15 va'Alumotungstite'◻2W2O6(H2O)Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Oxycalciobetafite'Ca2(Ti,Nb)2O6O
4.DH.15'Oxyuranobetafite'(U,Ca,◻)2(Ti,Nb)2O6O
4.DH.15Fluorcalciomicrolite(Ca,Na)2(Ta,Nb)2O6FIso. m3m(4/m32/m) : Fd3m
4.DH.15OxycalciomicroliteCa2Ta2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15OxystannomicroliteSn2Ta2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15Kenoplumbomicrolite(Pb,◻)2Ta2O6(◻,OH,O)Iso.
4.DH.15Oxynatromicrolite(Na,Ca,U)2(Ta,Nb)2O6(O,F)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Oxystibiomicrolite(Sb3+,Ca)2Ta2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15'Hydromicrolite'(H2O,◻)2Ta2(O,OH)6(H2O)
4.DH.15'Plumbomicrolite (of Hogarth 1977)'
4.DH.15Hydrokenomicrolite(◻,H2O)2Ta2(O,OH)6(H2O)Iso. m3m(4/m32/m)
4.DH.15Hydroxykenoelsmoreite(◻,Pb)2(W,Fe3+,Al)2(O,OH)6(OH)Trig. 3 : R3
4.DH.15 va'Yttromicrolite (of Hogarth)'(Ca,Y3+,U,Na)2-x(Ta,Nb,Ti,Fe3+)2O7Iso. m3m(4/m32/m) : Fd3m
4.DH.15Hydroxykenopyrochlore(◻,Ce,Ba)2(Nb,Ti)2O6(OH,F)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Hydroxymanganopyrochlore(Mn2+,Th,Na,Ca,REE)2(Nb,Ti)2O6(OH) Iso. m3(2/m3)
4.DH.20'Cuproroméite'Cu2Sb2(O,OH)7Iso.
4.DH.20Hydroxycalcioroméite(Ca,Sb3+)2(Sb5+,Ti)2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.20BindheimitePb2Sb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.20Hydroxyferroroméite(Fe2+1.5◻0.5)Sb5+2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.20Fluorcalcioroméite(Ca,Na,◻)2Sb5+2(O,OH)6FIso. m3m(4/m32/m) : Fd3m
4.DH.20OxycalcioroméiteCa2Sb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.20StibiconiteSb3+Sb5+2O6(OH) Iso. m3m(4/m32/m)
4.DH.20MonimolitePb2Sb5+2O7Iso. m3m(4/m32/m)
4.DH.25RosiaitePbSb5+2O6Trig. 3m(32/m) : P31m
4.DH.30Stefanweissite(Ca,REE)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14Orth. mmm(2/m2/m2/m) : Cmca
4.DH.30ZirconoliteCaZrTi2O7Orth.
4.DH.30Laachite(Ca,Mn)2Zr2Nb2TiFeO14Mon. 2/m : B2/b
4.DH.30Nöggerathite-(Ce)(Ce,Ca)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14Orth. mmm(2/m2/m2/m) : Cmca
4.DH.35LiandratiteU(Nb,Ta)2O8Trig. 3m(32/m) : P31m
4.DH.35PetscheckiteUFe(Nb,Ta)2O8Hex.
4.DH.40IngersoniteCa3Mn2+Sb5+4O14Trig. 32 : P3121
4.DH.45PittongiteNa0.22(W,Fe3+)(O,OH)3 · 0.44H2OHex. 6m2 : P6m2
4.DH.50TazzoliiteBa4-xNaxTi2Nb3SiO17[PO2(OH)2]x(OH)(1-2x) Orth. mmm(2/m2/m2/m) : Fmmm

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.

Internet Links for StetefeldtiteHide

References for StetefeldtiteHide

Localities for StetefeldtiteHide

Showing 29 localities.

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.
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Locality ListHide

- 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). 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Australia
 
  • New South Wales
    • Yancowinna Co.
      • Broken Hill district
Birch (1999)
  • Tasmania
    • West Coast municipality
      • Zeehan mining district
        • Dundas mineral field
Bill Birch unpub data
Austria
 
  • Tyrol
    • Kufstein District
      • Reith im Alpbachtal
        • Geyer - Silberberg District
          • Silberberg
Schnorrer et al. (2002)
France
 
  • Brittany
    • Côtes-d'Armor
      • Guingamp
        • Belle-Isle-en-Terre
Chauris (2014)
Germany
 
  • Lower Saxony
    • Goslar District
      • Braunlage
          • Beerberg
Schnorrer et al. (1995)
USA
 
  • Arizona
    • Cochise County
      • Johnny Lyon Hills
Anthony et al. (1995)
    • La Paz County
      • Silver Mining District
Rocks & Min.: 61:55-56. +2 other references
    • Pima County
      • Tucson Mountains
        • Amole Mining District
          • Snyder Hill
Anthony et al. (1995)
  • Idaho
    • Valley County
Leonard et al. (1987)
  • Nevada
    • Esmeralda County
Castor et al. (2004)
      • Gilbert Mining District
Castor et al. (2004)
Castor et al. (2004)
      • Palmetto Mining District
- (2005)
    • Lander County
Castor et al. (2004)
    • Lincoln County
      • Pahranagat Mining District
NBMG Bull 73 Geology and Mineral ...
    • Mineral County
Castor et al. (2004)
    • Nye County
      • Hot Creek Range
Castor et al. (2004)
      • Toquima Range
        • Belmont Mining District
- (2005)
          • Belmont
J.V. Tingley and J. Quade (1986) +1 other reference
Castor et al. (2004) +1 other reference
Castor et al. (2004)
Kleinhampl et al. (1984)
Castor et al. (2004)
Castor et al. (2004)
Castor et al. (2004)
    • White Pine County
      • White Pine Mining District
- (1976)
Castor et al. (2004)
  • New Mexico
    • Socorro County
Northrop et al. (1996)
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