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Fangite

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Allchar (Alsar), Roszdan, Republic of Macedonia
© Thomas Witzke

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Formula:
Tl
 
3
AsS
 
4
System:OrthorhombicColour:Deep red to maroon.
Hardness:2 - 2½
This page provides mineralogical data about Fangite.

Classification of Fangite

IMA status:Approved
Strunz 8th edition ID:2/E.10-10
Nickel-Strunz 10th (pending) edition ID:2.KA.15

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
K : Sulfarsenates, Sulfantimonates
A : Sulfarsenates with (As,Sb)S4 tetrahedra
Dana 8th edition ID:3.2.9.1

3 : SULFOSALTS
2 : ø = 4
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Type Occurrence of Fangite

Type Locality:Mercur Disseminated Gold Mine (Marion Hill pit), Mercur District (Camp Floyd District), Oquirrh Mts, Tooele Co., Utah, USA
Year of Discovery:1992

Physical Properties of Fangite

Colour:Deep red to maroon.
Hardness (Mohs):2 - 2½

Crystallography of Fangite

Crystal System:Orthorhombic
Cell Parameters:a = 8.89Å, b = 10.85Å, c = 9.07Å
Ratio:a:b:c = 0.819 : 1 : 0.836
Unit Cell Volume:V 874.86 ų (Calculated from Unit Cell)

Optical Data of Fangite

Type:Biaxial
Dispersion:relatively strong

Chemical Properties of Fangite

Formula:
Tl
 
3
AsS
 
4
Essential elements:As, S, Tl
All elements listed in formula:As, S, Tl
Common Impurities:Fe,Cu,Zn,Au,Sb,Se,Te,Ni

Relationship of Fangite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.KA.05Enargite
Cu
 
3
AsS
 
4
2.KA.05Petrukite
(Cu,Fe,Zn,Ag)
 
3
(Sn,In)S
 
4
2.KA.10Briartite
Cu
 
2
(Fe,Zn)GeS
 
4
2.KA.10Famatinite
Cu
 
3
SbS
 
4
2.KA.10Luzonite
Cu
 
3
AsS
 
4
2.KA.10Permingeatite
Cu
 
3
SbSe
 
4
2.KA.10Barquillite
Cu
 
2
CdGeS
 
4

Other Names for Fangite

Synonyms:
IMA1991-047
Other Languages:
German:Fangit
Russian:Фангит
Spanish:Fangita

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 Fangite

Reference List:

- +
New Minerals (1997), New Minerals 1990-1994.

American Mineralogist: 78: 1096-1103.

Internet Links for Fangite

Search Engines:
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    • External Links:
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  • Look for Fangite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Fangite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
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    • Localities for Fangite

    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.
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    (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.
    Republic of Macedonia
     
    • Roszdan
    		Volkov, A.V., Serafimovski, T., Kochneva, N.T., Tomson, I.N., and Tasev, G. (2006): Geology of Ore Deposits 48(3), 175-192.
    Gunnar Farber specimens
    USA
     
    • Utah
      • Tooele Co.
        • Oquirrh Mts
          • Mercur District (Camp Floyd District)
    		American Mineralogist: 78: 1096-1103
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