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Stetefeldtite

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Formula:
Ag
 
2
Sb
 
2
(O,OH)
 
7
System:IsometricColour:Brown, black, green, ...
Hardness:3½ - 4½
Name:Named after Karl August Stetefeldt (1838-1896), mining engineer and metallurgist.
A variety of Roméite Group

Very old references (Riotte 1867, Mason & Vitaliano 1953).
Probably 'argentoroméite'. This material needs to be examined chemically and structurally.

Classification of Stetefeldtite

Strunz 8th edition ID:4/C.11-20
Nickel-Strunz 10th (pending) edition ID: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 edition ID: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
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Type Occurrence of Stetefeldtite

Type Locality:Combination claim, Belmont District, Nye Co., Nevada, USA

Physical Properties of Stetefeldtite

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

Crystallography of Stetefeldtite

Crystal System:Isometric
Morphology:Massive.

Optical Data of Stetefeldtite

Type:Isotropic

Chemical Properties of Stetefeldtite

Formula:
Ag
 
2
Sb
 
2
(O,OH)
 
7
Essential elements:Ag, O, Sb
All elements listed in formula:Ag, H, O, Sb

Relationship of Stetefeldtite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.DH.05Brannerite
(U
4+
 
,REE,Th,Ca)(Ti,Fe
3+
 
,Nb)
 
2
(O,OH)
 
6
4.DH.05Orthobrannerite
U
4+
 
U
6+
 
Ti
 
4
O
 
12
(OH)
 
2
4.DH.05Thorutite
(Th,U,Ca)Ti
 
2
(O,OH)
 
6
4.DH.10Kassite
CaTi
 
2
O
 
4
(OH)
 
2
4.DH.10Lucasite-(Ce)
CeTi
 
2
(O,OH)
 
6
4.DH.15Bariomicrolite (of Hogarth 1977)
4.DH.15Bariopyrochlore (of Hogarth 1977)
4.DH.15Betafite (of Hogarth 1977)
4.DH.15Bismutomicrolite (of Hogarth 1977)
4.DH.15Calciobetafite (of Mazzi & Munno)
4.DH.15Ceriopyrochlore (of Hogarth 1977)
4.DH.15Cesstibtantite
4.DH.15Jixianite
Pb(W,Fe
3+
 
)
 
2
(O,OH)
 
7
4.DH.15Hydropyrochlore
(H
 
2
O,□)
 
2
Nb
 
2
(O,OH)
 
6
(H
 
2
O)
4.DH.15Natrobistantite
4.DH.15Plumbopyrochlore (of Skorobogatova et al.)
4.DH.15Plumbomicrolite (of Hogarth 1977)
4.DH.15Plumbobetafite (of Hogarth 1977)
4.DH.15Stibiomicrolite (of Groat et al.)
4.DH.15Strontiopyrochlore (of Hogarth 1977)
4.DH.15Stannomicrolite (of Hogarth 1977)
4.DH.15Stibiobetafite (of Černý et al.)
4.DH.15Uranpyrochlore (of Hogarth 1977)
(U,Ca,Ce)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
4.DH.15Yttrobetafite (of Hogarth 1977)
4.DH.15Yttropyrochlore (of Hogarth 1977)
4.DH.15Fluornatromicrolite
(Na,Ca,Bi)
 
2
Ta
 
2
O
 
6
F
4.DH.15Bismutopyrochlore (of Chukanov et al.)
4.DH.15Hydrokenoelsmoreite
 
2
W
 
2
O
 
6
(H
 
2
O)
4.DH.20Bismutostibiconite
Bi(Sb
5+
 
,Fe
3+
 
)
 
2
O
 
7
4.DH.20Oxyplumboroméite
Pb
 
2
Sb
 
2
O
 
6
O
4.DH.20Monimolite
4.DH.20Cuproroméite
Cu
 
2
Sb
 
2
(O,OH)
 
7
4.DH.20Stibiconite
4.DH.25Rosiaite
PbSb
5+
2
O
 
6
4.DH.30Zirconolite
CaZrTi
 
2
O
 
7
4.DH.35Liandratite
U(Nb,Ta)
 
2
O
 
8
4.DH.35Petscheckite
UFe(Nb,Ta)
 
2
O
 
8
4.DH.40Ingersonite
Ca
 
3
MnSb
 
4
O
 
14
4.DH.45Pittongite
Na
 
0.22
(W,Fe
3+
 
)(O,OH)
 
3
· 0.44H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
24.1.1Mopungite
Na[Sb
5+
 
(OH)
 
6
]
24.1.2Cetineite
(K,Na)
 
6
Sb
3+
12
(Sb
3+
 
S
 
3
)
 
2
O
 
18
(OH)
 
0.5
· 5,5H
 
2
O
24.1.3Cuproroméite
Cu
 
2
Sb
 
2
(O,OH)
 
7
24.1.4Cualstibite
Cu
 
2
Al(OH)
 
6
[Sb
5+
 
(OH)
 
6
]

Other Names for Stetefeldtite

Other Languages:
German:Stetefeldtit
Spanish:Stetefeldtita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Stetefeldtite

Reference List:

- +
Riotte (1867), B.H. Ztg.: 26: 253.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 598.

Mineralogical Magazine (1953): 30: 100-112.

American Mineralogist (1954): 39: 408.

Internet Links for Stetefeldtite

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  • Localities for Stetefeldtite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • New South Wales
      • Yancowinna Co.
    Birch
    Austria
     
    • Tyrol
      • North Tyrol
        • Inn valley
          • Brixlegg - Schwaz area
            • Brixlegg - Rattenberg
              • Geyer - Silberberg District
                • Silberberg
    Schnorrer, G. and Poeverlein, R. (2002) Schwaz-Brixlegg-Fundstellen: 2. Die Minerale des Stockerstollens bei Brixlegg in Tirol. Aufschluss, 53, 209-228.
    Germany
     
    • Lower Saxony
      • Harz
        • St Andreasberg District
    No reference listed
    USA
     
    • Arizona
      • Cochise Co.
        • Dragoon Mts
          • Johnny Lyon Hills
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 381.
      • La Paz Co.
        • Trigo Mts
          • Silver District
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 381; Edson, G.M. (1980), The Red Cloud mine, Yuma, AZ, Min.Rec.: 11: 141-152; Rocks & Min.: 61:55-56.
      • Pima Co.
        • Tucson Mts
          • Amole District
            • Snyder Hill
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 381.
    • Nevada
      • Esmeralda Co.
        • Gilbert District
    NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
        • Silver Peak District
    NBMG Spec. Pub. 31 Minerals of Nevada
      • Lander Co.
    NBMG Spec. Pub. 31 Minerals of Nevada
      • Lincoln Co.
        • Pahranagat District
    NBMG Bull 73 Geology and Mineral Resources of Lincoln County, Nevada
      • Mineral Co.
    NBMG Spec. Pub. 31 Minerals of Nevada
      • Nye Co.
        • Belmont District
    NBMG Spec. Pub. 31 Minerals of Nevada; J.V. Tingley and J. Quade (1986) A mineral inventory of the Tonopah Resource Area, Battle Mountain District, Nevada. Nevada Bureau of Mines and Geology OFR 86-14
    NBMG Bull 99B Geology and Mineral Resources of Northern Nye County, Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
      • White Pine Co.
        • White Pine District
    NBMG Bull 85 Geology and Mineral Resources of White Pine County, Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
    • New Mexico
      • Socorro Co.
    Minerals of New Mexico 3rd ed.
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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