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Fangite

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About FangiteHide

Formula:
Tl3AsS4
Colour:
Deep red to maroon.
Hardness:
2 - 2½
Crystal System:
Orthorhombic
Name:
In honor of Dr. Jen-Ho Fang (1929– ), crystal chemist, University of Alabama, Tuscaloosa, Alabama, USA.
This page provides mineralogical data about Fangite.


Classification of FangiteHide

Approved
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
3.2.9.1

3 : SULFOSALTS
2 : ø = 4

Physical Properties of FangiteHide

Colour:
Deep red to maroon.
Hardness:
2 - 2½ on Mohs scale

Optical Data of FangiteHide

Type:
Biaxial
Dispersion:
relatively strong

Chemical Properties of FangiteHide

Formula:
Tl3AsS4
Common Impurities:
Fe,Cu,Zn,Au,Sb,Se,Te,Ni

Crystallography of FangiteHide

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

Type Occurrence of FangiteHide

Synonyms of FangiteHide

Other Language Names for FangiteHide

German:Fangit
Russian:Фангит
Spanish:Fangita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Orpiment5 photos of Fangite associated with Orpiment on mindat.org.
Lorándite2 photos of Fangite associated with Lorándite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.KA.05EnargiteCu3AsS4Orth. mm2 : Pmn21
2.KA.05Petrukite(Cu,Fe,Zn,Ag)3(Sn,In)S4Orth.
2.KA.10BriartiteCu2(Fe,Zn)GeS4Tet.
2.KA.10FamatiniteCu3SbS4Tet. 4 2m : I4 2m
2.KA.10LuzoniteCu3AsS4Tet. 4 2m : I4 2m
2.KA.10PermingeatiteCu3SbSe4Tet.
2.KA.10BarquilliteCu2CdGeS4Tet. 4 2m : I4 2m

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 FangiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
El Goresy, A. & Pavičević, M. K. (1988): A new thallium mineral in the Alshar deposit in Yugoslavia. Mineralogy, mineral chemistry and genetic relations of the thallium-rich mineral associations. Naturwissenschaften 75, 37-39. [as unnamed mineral]
Wilson, J.R., Sen Gupta, P.K., Robinson, P.D., Criddle, A.J. (1993): Fangite, Tl3AsS4, a new thallium arsenic sulfosalt from the Mercur gold deposit, Utah, and revised optical data for gillulyite. American Mineralogist 78, 1096-1103.
New Minerals (1997), New Minerals 1990-1994.

Internet Links for FangiteHide

Localities for FangiteHide

ⓘ - 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.
Republic of Macedonia
 
  • Kavadarci
    • Rožden (Rozhden; Roszdan)
El Goresy, A. & Pavičević, M. K. (1988): A new thallium mineral in the Alshar deposit in Yugoslavia. Mineralogy, mineral chemistry and genetic relations of the thallium-rich mineral associations. Naturwissenschaften 75, 37-39. [as unnamed mineral]; Boev, B., Bermanec, V., Serafimovski, T., Lepitkova, S., Mikulčić, S., Šoufek, M., Jovanovski, G., Stafilov, T., Najdoski, M. (2001-2002): Allchar mineral assemblage. Geol. Maced., 15-16, Suppl., 1-23.; Volkov, A.V., Serafimovski, T., Kochneva, N.T., Tomson, I.N., and Tasev, G. (2006): Geology of Ore Deposits 48(3), 175-192.
Gunnar Färber specimens
Switzerland
 
  • Wallis (Valais)
    • Binn Valley
      • Fäld (Imfeld; Im Feld; Feld)
Roth, P. (2017): Fangit: neue Mineralart für die Schweiz und die ersten Kristalle. Schweizer Strahler 51 (2), 35-37 (in German and French).
USA (TL)
 
  • Utah
    • Tooele Co.
      • Oquirrh Mts
        • Mercur District (Camp Floyd District)
American Mineralogist: 78: 1096-1103
Mineral and/or Locality  
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