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Dark lead-grey
Specific Gravity:
Crystal System:
For Paul Billingsley (1887-1962), who discovered the mineral.
This page provides mineralogical data about Billingsleyite.

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Classification of BillingsleyiteHide


2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
K : Sulfarsenates, Sulfantimonates
B : Sulfarsenates with additional S

1 : ø > 4

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
2 : Sulpharsenites etc. of Ag

Physical Properties of BillingsleyiteHide

Dark lead-grey
2½ on Mohs scale
5.92(2) g/cm3 (Measured)    5.90 g/cm3 (Calculated)

Chemical Properties of BillingsleyiteHide

Common Impurities:

Crystallography of BillingsleyiteHide

Crystal System:
Class (H-M):
2 3 - Tetartoidal
Space Group:
P21 3
Cell Parameters:
a = 10.4760(8) Å
Unit Cell V:
1,149.71 ų (Calculated from Unit Cell)
Fine-grained aggregates. Flattened octahedra (often dull).

X-Ray Powder DiffractionHide

Powder Diffraction Data:
6.11 (40)
3.53 (60)
3.34 (50)
3.19 (70)
3.05 (100)
2.83 (60)
2.49 (60)
Tintic, Utah, USA.

Type Occurrence of BillingsleyiteHide

General Appearance of Type Material:
Fine-grained aggregates.
Place of Conservation of Type Material:
National School of Mines, Paris, France; Harvard University, Cambridge, Massachusetts, 110530; National Museum of Natural History, Washington, D.C., USA, R18987.
Geological Setting of Type Material:
Believed to have occurred in a body of high-grade silver ore.
Associated Minerals at Type Locality:

Synonyms of BillingsleyiteHide

Other Language Names for BillingsleyiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Alabandite1 photo of Billingsleyite associated with Alabandite on
Pyrargyrite1 photo of Billingsleyite associated with Pyrargyrite on
Chalcopyrite1 photo of Billingsleyite associated with Chalcopyrite on

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

5.2.1SmithiteAgAsS2Mon. 2/m
5.2.3ProustiteAg3AsS3Trig. 3m (3 2/m) : R3c
5.2.4XanthoconiteAg3AsS3Mon. 2/m : B2/b
5.2.5Pearceite[Ag9CuS4][(Ag,Cu)6(As,Sb)2S7]Trig. 3m (3 2/m) : P3m1
5.2.6Pearceite-T2acTrig. 3 2 : P3 2 1
5.2.7ArgentotennantiteAg6[Cu4(Fe,Zn)2]As4S13Iso. 4 3m : I4 3m
5.2.8MiargyriteAgSbS2Mon. 2/m : B2/b
5.2.9PyrargyriteAg3SbS3Trig. 3m : R3c
5.2.10PyrostilpniteAg3SbS3Mon. 2/m : P21/b
5.2.11StephaniteAg5SbS4Orth. mm2 : Cmc21
5.2.12Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]Mon. 2/m : B2/m
5.2.14Polybasite-TacTrig. 3m (3 2/m) : P3m1
5.2.15FreibergiteAg6[Cu4Fe2]Sb4S13-xIso. 4 3m : I4 3m
5.2.16AramayoiteAg3Sb2(Bi,Sb)S6Tric. 1 : P1
5.2.19PavoniteAgBi3S5Mon. 2/m : B2/m
5.2.21BohdanowicziteAgBiSe2Trig. 3m (3 2/m) : P3m1
5.2.23Benleonardite[Ag6(Sb,As)2S6Te] [Ag9Cu(S,Te)2Te2]Trig. 3m (3 2/m) : P3m1

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 BillingsleyiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Frondel, C., Honea, R. M. (1968): Billingsleyite, a new silver sulfosalt. American Mineralogist, 53, 1791-1798.
Anzeiger der Österreichischen Akademie der Wissenschaften, Mathematisch-Naturwissenschaftliche Klasse: 129(2): 9-11.
Pertlik, F. (1994): Hydrothermal synthesis and crystal structure determination of heptasilver(I)-disulfur-tetrathioarsenate(V), Ag7S2(AsS4), with a survey on thioarsenate anions. Journal of Solid State Chemistry, 112, 170-175.
L. Bindi, R.T. Downs, S. Menchetti (2010): The crystal structure of billingsleyite, Ag7(As,Sb)S6, a sulfosalt containing As5+. Canadian Mineralogist, 48, 155-162.

Internet Links for BillingsleyiteHide

Localities for BillingsleyiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.
  • Lower Austria
    • Mostviertel
      • Annaberg
Kolitsch, U., Auer, C. & Zeug, M. (2017): 2046) Austinit, Billingsleyit, Konichalcit, Lenait?, Luzonit, Marrit, Trechmannit und Zinkrosasit von Annaberg, Niederösterreich (ein Vorbericht). Pp. 265-268 in Walter, F. et al. (2017): Neue Mineralfunde aus Österreich LXVI. Carinthia II, 207./127., 217-284.
  • Baden-Württemberg
    • Black Forest
      • Wolfach
        • Oberwolfach
          • Rankach valley
Blaß, G. & Graf, H. W. (2000): Neufunde von bekannten Fundorten im Schwarzwald. Mineralien-Welt, 11 (4), 57-60. (in German); BLAß, G. & GRAF, H. W. (2001): Billingsleyit – die Grube Clara, weltweit der zweite Fundpunkt. Erzgräber, 15, 4-6.
  • Tuscany
    • Grosseto Province
      • Gavorrano
Rivista Mineralogica Italiana anno 2014 n. 1 pg. 8-24 e 26-31
Orlandi, P. (2011): Zibaldone di mineralogia italiana 2010. Micro, 1/2011, 39-42
    • Lucca Province
      • Apuan Alps
        • Pietrasanta
          • Valdicastello Carducci
Biagioni, C., Bindi, L., Orlandi, P., Michelucci, E., Bazzoni, C., Bernocchi, M. & Mangoni, G. (2014): Billingsleyite e fettelite. Nuovi ritrovamenti toscani. Rivista Mineralogica Italiana, 38(1), 26-31.
  • Mexico
    • Mun. de Temascaltepec
      • Temascaltepec de González (Temascaltepec)
Camprubi, A., Canals, A., Cardellach, E., Prol-Ledesma, R.M., Rivera, R., 2001, The La Guitarra Ag-Au low-sulfidation epithermal deposit, Temascaltepec district, Mexico: vein structure, mineralogy, and sulfide-sulfosalt chemistry. Society of Economic Geologists Special Publication, v. 8, p. 133-158.
  • Lima Department
    • Oyon Province
Frank Keutsch EDS- (Ag7AsS6, Sb-free) and SXRD-analysis (P213, a = 10.46 A).
  • Hunedoara Co.
    • Deva
Andy Roberts
  • Far-Eastern Region
    • Magadanskaya Oblast'
Savva, N. E., & Pal’yanova, G. A. (2007). Genesis of gold and silver sulfides at the Ulakhan deposit (northeastern Russia). Russian Geology and Geophysics, 48(10), 799-810.
  • Marmara Region
    • Balikesir Province
      • Sindirgi
Blanks, D. E., Holwell, D. A. and Coller, I. V. (2014), Multi Stage Epithermal Au-Ag Mineralisation in the Kiziltepe Deposit, Western Turkey: Evidence From 3D High Resolution CT Scanning. Acta Geologica Sinica, 88: 706–707.
  • Utah
    • Utah Co.
      • East Tintic Mts
        • East Tintic District
AM 53 (1968), 1791; HB1 (1990); Am Min 53:1791-1798
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