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Fischesserite

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De Lamar Mine (Wahl; Sommercamp; Voschay), De Lamar District, Owyhee Co., Idaho, USA
© 2007, JGW




Formula:
Ag
 
3
AuSe
 
2
System:IsometricHardness:2
Name:For Raymond Fischer, Director of the National School of Mines, Paris, France
This page provides mineralogical data about Fischesserite.

Classification of Fischesserite

IMA status:Approved
Strunz 8th edition ID:2/B.07-50
Nickel-Strunz 10th (pending) edition ID:2.BA.75

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
A : With Cu, Ag, Au
Hey's CIM Ref.:3.3.5

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
3 : Sulphides etc. of Au
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Type Occurrence of Fischesserite

Type Locality:Předbořice, Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic
Place of Conservation of Type Material:National School of Mines, Paris, France
Year of Discovery:1971
Geological Setting of type material:Carbonate vein in epithermal precious metal hydrothermal deposit.
Associated Minerals at type locality:
NaumanniteClausthalitePermingeatiteGoldCalcite
Quartz

Physical Properties of Fischesserite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Hardness (Mohs):2
Hardness (Vickers):VHN50=32 kg/mm2
Density (calculated):9.05 g/cm3

Crystallography of Fischesserite

Crystal System:Isometric
Class (H-M):4 3 2 - Gyroidal
Space Group:I41 3 2
Cell Parameters:a = 9.967Å
Unit Cell Volume:V 990.13 ų (Calculated from Unit Cell)
Z:8
Morphology:Massive, xenomorphic grains

Chemical Properties of Fischesserite

Formula:
Ag
 
3
AuSe
 
2
Essential elements:Ag, Au, Se
All elements listed in formula:Ag, Au, Se
Common Impurities:Cu

Relationship of Fischesserite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.BA.05Chalcocite
Cu
 
2
S
2.BA.05Djurleite
Cu
 
31
S
 
16
2.BA.05Geerite
Cu
 
8
S
 
5
2.BA.05Roxbyite
Cu
 
9
S
 
5
2.BA.10Anilite
Cu
 
7
S
 
4
2.BA.10Digenite
Cu
 
9
S
 
5
2.BA.15Bornite
Cu
 
5
FeS
 
4
2.BA.20Bellidoite
Cu
 
2
Se
2.BA.20Berzelianite
Cu
 
2
Se
2.BA.25Athabascaite
Cu
 
5
Se
 
4
2.BA.25Umangite
Cu
 
3
Se
 
2
2.BA.30Rickardite
Cu
 
7
Te
 
5
2.BA.30Weissite
Cu
 
2-x
Te
2.BA.35Acanthite
Ag
 
2
S
2.BA.40Mckinstryite
Ag
 
5-x
Cu
 
3+x
S
 
4
2.BA.40Stromeyerite
AgCuS
2.BA.40dUM2003-13-S:AgAuCu
Ag
 
6
AuCu
 
2
S
 
5
2.BA.45Jalpaite
Ag
 
3
CuS
 
2
2.BA.45Selenojalpaite
Ag
 
3
CuSe
 
2
2.BA.50Eucairite
AgCuSe
2.BA.55Aguilarite
Ag
 
4
SeS
2.BA.55Naumannite
Ag
 
2
Se
2.BA.60Cervelleite
Ag
 
4
TeS
2.BA.60Hessite
Ag
 
2
Te
2.BA.60Chenguodaite
Ag
 
9
Fe
3+
 
Te
 
2
S
 
4
2.BA.65Henryite
Ag
 
3
Cu
 
4
Te
 
4
2.BA.65Stützite
Ag
 
5-x
Te
 
3
, x = 0.24-0.36
2.BA.70Argyrodite
Ag
 
8
GeS
 
6
2.BA.70Canfieldite
Ag
 
8
(Sn,Ge)(S,Te)
 
6
2.BA.70Putzite
(Cu
 
4.7
Ag
 
3.3
)GeS
 
6
2.BA.75Penzhinite
(Ag,Cu)
 
4
Au(S,Se)
 
4
2.BA.75Petrovskaite
AuAg(S,Se)
2.BA.75Petzite
Ag
 
3
AuTe
 
2
2.BA.75Uytenbogaardtite
Ag
 
3
AuS
 
2
2.BA.80Bezsmertnovite
(Au,Ag)
 
4
Cu(Te,Pb)
2.BA.80Bilibinskite
PbCuAu
 
3
Te
 
2
2.BA.80Bogdanovite
(Au,Te,Pb)
 
3
(Cu,Fe)
Related Minerals - Hey's Index Grouping:

- +
3.3.1Calaverite
AuTe
 
2
3.3.2Krennerite
(Au,Ag)Te
 
2
3.3.3Kostovite
CuAuTe
 
4
3.3.4Uytenbogaardtite
Ag
 
3
AuS
 
2
3.3.6Petrovskaite
AuAg(S,Se)
3.3.7Petzite
Ag
 
3
AuTe
 
2
3.3.8Muthmannite
AuAgTe
 
2
3.3.9Sylvanite
(Au,Ag)
 
2
Te
 
4
3.3.10Penzhinite
(Ag,Cu)
 
4
Au(S,Se)
 
4
3.3.11Bezsmertnovite
(Au,Ag)
 
4
Cu(Te,Pb)
3.3.12Bilibinskite
PbCuAu
 
3
Te
 
2
3.3.13Bogdanovite
(Au,Te,Pb)
 
3
(Cu,Fe)
3.3.14Montbrayite
(Au,Sb)
 
2
Te
 
3

Other Names for Fischesserite

Synonyms:
IMA1971-010
Other Languages:
German:Fischesserit
Russian:Фишессерит
Simplified Chinese:硒金银矿
Spanish:Fischesserita

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 Fischesserite

Reference List:

- +
Bindi, L. & and Cipriani, C. (2004): Structural and physical properties of fischesserite, a rare gold–silver selenide from the De Lamar mine, Owyhee County, Idaho, USA. The Canadian Mineralogist, 42, 1733-1737.

American Mineralogist: 57: 1554.

Internet Links for Fischesserite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Fischesserite details from Handbook of Mineralogy (PDF)
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    • Localities for Fischesserite

    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.
    Hide Locality List
    (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.
    Argentina
     
    • La Rioja
    		Recursos Minerales de la Republica Argentina, E. O. Zappettini Ed., Buenos Aires 1999 ISSN 0328-2325
      • Sañogasta District
    		M.K. de Brodtkorb (ed.) (2002) Las Especies Minerales de la Republica Argentina, (Asociacion Mineralogica Argentina)
    Minerales de la Republica Argentina, E. O. Zappettini Ed., Buenos Aires 1999 ISSN 0328-2325
      • Sierra de Umango
        • Sierra de Cacho
    		DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.
    Canada
     
    • Ontario
      • Cochrane District
        • Timmins Area
          • Kidd Township
    		ontariominerals.com; Econ Geol (1997) 92:468-484; Canadian Mineralogist (1984) 22 (2), 227-232
    Chile
     
    • Atacama Region
      • Chañaral Province
        • Salitrosa-Porvenir district
    		Extra Lapis English No. 5 Gold
    China
     
    • Yunnan Province
      • Pu'er Prefecture
        • Mojiang Co.
    		Yuan Li (1998): Geology and Prospecting 34(5), 28-32
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
    		Bull.Soc.fr.Min.Crist.(1971) 94, 381-384; Econ Geol (1997) 92:468-484
    • Moravia (Mähren; Maehren)
      • Vysočina Region
        • Rožná deposit
    		Strübel, Zimmer: "Lexikon der Minerale", 2nd Ed., 1991
    Sweden
     
    • Östergötland
      • Valdemarsvik
    		Sandström, F. (2007): Skrikerum. Litiofilen 24 (1), 22-38
    UK
     
    • England
      • Devon
        • South Devon
          • Torquay
    		[Camm, 1995, 71 - "Gold in the Counties of Cornwall and Devon"]
    USA
     
    • Idaho
      • Owyhee Co.
        • De Lamar District
    		Extra Lapis English No. 5 Gold
    • Nevada
      • Elko Co.
        • Gold Circle District (Midas District)
    		NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
    • Washington
      • Chelan Co.
        • Wenatchee District
          • Wenatchee
            • Squillchuck Creek
    		Lasmanis, R. (1995): Mineral News: A Compendium of Wenatchee District Mineralogy, Chelan County, Washington, p.6-7
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. 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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