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About AramayoiteHide

Don Felix Avelino Aramayo
End-member formula: Ag3Sb2BiS6. Formerly given as Ag(Sb,Bi)S2.
Iron-black; deep red (transmitted light)
Specific Gravity:
Crystal System:
Named in honor of Don Felix Avelino Aramayo (1846 - 1929), Managing Director of the Compagnie Aramayo de Mines en Bolivie.
Isostructural with:
This page provides mineralogical data about Aramayoite.

Classification of AramayoiteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
A : With Cu, Ag, Fe (without Pb)

7 : ø = 2

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

Physical Properties of AramayoiteHide

Iron-black; deep red (transmitted light)
2½ on Mohs scale
{010} perfect; {100} fair; {001} poor.
{101} frequent.
5.602 g/cm3 (Measured)    5.624 g/cm3 (Calculated)

Optical Data of AramayoiteHide

Very high in oil
400nmR1=38.9%R2= 43.4%
420nmR1=38.8%R2= 42.5%
440nmR1=38.5%R2= 41.9%
460nmR1=38.4%R2= 41.6%
480nmR1=38.2%R2= 41.1%
500nmR1=38.0%R2= 40.9%
520nmR1=37.8%R2= 40.5%
540nmR1=37.5%R2= 40.2%
560nmR1=37.3%R2= 40.0%
580nmR1=37.1%R2= 40.1%
600nmR1=37.0%R2= 40.1%
620nmR1=36.7%R2= 39.9%
640nmR1=36.6%R2= 39.5%
660nmR1=36.2%R2= 39.1%
680nmR1=36.1%R2= 39.0%
700nmR1=36.3%R2= 39.8%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 43.4%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Internal Reflections:
Distinct in oil

Chemical Properties of AramayoiteHide


End-member formula: Ag3Sb2BiS6. Formerly given as Ag(Sb,Bi)S2.
Emperical Formula (of original material):
Common Impurities:

Crystallography of AramayoiteHide

Crystal System:
Class (H-M):
1 - Pinacoidal
Space Group:
Cell Parameters:
a = 7.74 Å, b = 8.84 Å, c = 8.32 Å
α = 100.7°, β = 90°, γ = 103.9°
a:b:c = 0.876 : 1 : 0.941
Unit Cell V:
542.40 ų (Calculated from Unit Cell)
Thin plates
About [_101] with composition plane near {_101}

Crystallographic forms of AramayoiteHide

Crystal Atlas:
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Aramayoite - Tabular {010}
3d models and HTML5 code kindly provided by

Edge Lines | Miller Indices | Axes

Opaque | Translucent | Transparent

Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation

Crystal StructureHide

Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Big Balls | Small Balls | Just Balls | Spacefill
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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0002821AramayoiteEffenberger H, Paar W H, Topa D, Criddle A J, Fleck M (2002) The new mineral baumstarkite and a structural reinvestigation of aramayoite and miargyrite American Mineralogist 87 753-76420020293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
3.43 Å(20)
3.21 Å(40)
2.806 Å(100)
2.048 Å(20)
1.940 Å(30)
1.705 Å(20)
1.402 Å(20)

Geological EnvironmentHide

Geological Setting:
Hydrothermal silver tin ores.

Type Occurrence of AramayoiteHide

Spencer, L.J., Mountain, E.D. (1926) Aramayoite, a new mineral, from Bolivia. Mineralogical Magazine: 21: 156-162.

Other Language Names for AramayoiteHide

Simplified Chinese:硫铋锑银矿

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Aramayoite associated with GeocronitePb14(Sb,As)6S23
2 photos of Aramayoite associated with EskimoiteAg7Pb10Bi15S36
2 photos of Aramayoite associated with PyriteFeS2
2 photos of Aramayoite associated with QuartzSiO2
2 photos of Aramayoite associated with JordanitePb14(As,Sb)6S23
1 photo of Aramayoite associated with ProustiteAg3AsS3
1 photo of Aramayoite associated with KobellitePb22Cu4(Bi,Sb)30S69

Related Minerals - Nickel-Strunz GroupingHide

2.HA.05ChalcostibiteCuSbS2Orth. mmm (2/m 2/m 2/m)
2.HA.05EmplectiteCuBiS2Orth. mmm (2/m 2/m 2/m) : Pmna
2.HA.10MiargyriteAgSbS2Mon. 2/m : B2/b
2.HA.20BerthieriteFeSb2S4Orth. mmm (2/m 2/m 2/m)
2.HA.25BaumstarkiteAg3Sb3S6Tric. 1 : P1

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
5.2.7Argentotennantite-(Zn)Ag6(Cu4Zn2)As4S12SIso. 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
5.2.13BillingsleyiteAg7AsS6Iso. 2 3 : P21 3
5.2.14Polybasite-TacTrig. 3m (3 2/m) : P3m1
5.2.15Freibergite Subgroup([Ag6]4+,(Ag,Cu)6)((Cu,Ag)4C2+2)Sb4S12S0-1Iso. 4 3m : I4 3m
5.2.17MatilditeAgBiS2Trig. 3m (3 2/m) : P3m1
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 AramayoiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Spencer, L.J., Mountain, E.D. (1926) Aramayoite, a new mineral, from Bolivia. Mineralogical Magazine: 21: 156-162.
Foshag, W.F. (1927) New mineral names. American Mineralogist: 12: 265-266.
Palache, C., Berman, H., Frondel, C. (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: 427-429.
Graham, A.R. (1951) Matildite, aramayoite, miargyrite. American Mineralogist: 36: 436–449.
Ramdohr, Paul (1969) The Ore Minerals and their Intergrowths, Pergamon Press, pp. 1174.
Mullen, D.J.E., Nowacki, W. (1974) The crystal structure of aramayoite Ag(Sb,Bi)S2. Zeitschrift für Kristallographie: 139: 54-69.
Effenberger, H., Paar, W.H., Topa, D., Criddle, A.J., Fleck, M. (2002) The new mineal baumstarkite and a structural reinvestigation of aramayoite and miargyrite. American Mineralogist: 87: 753-764.

Internet Links for AramayoiteHide

Localities for AramayoiteHide

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.
  • Jujuy Province
    • Rinconada Department
Milka K. de Brodtkorb (1973) 5th Congreso Geologico Argentino 1:63-68, Cordoba.
  • Salta Province
    • Los Andes department
      • El Quevar mining district
Brodtkorb (2002): Las Especies Minerales de la Republica Argentina
        • Incahuasi Valley
Herta Effenberger, Werner Hermann Paar, Dan Topa, Alan J. Criddle and Michel Fleck (2002) The new mineral baumstarkite and a structural reinvestigation of aramayoite and miargyrite American Mineralogist, 87(5-6):753-764; ROBL, Klaus; BRODTKORB, Milka and AMETRANO, Silvia. The Miocene epithermal mineralization of the Quevar Stratovolcan Complex, Salta. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 525-539
  • Santa Cruz Province
    • Deseado department
      • Deseado massif
        • Tres Cerros
Jovic, S.M., Guido, D.M., Schalamuk, I.B., Ríos, F.J., Tassinari, C.C.G., Recio. C. (2011): Pingüino In-bearing polymetallic vein deposit, Deseado Massif, Patagonia, Argentina: characteristics of mineralization and ore-forming fluids. Mineralium Deposita, 46, 257-271.
  • Salzburg
    • Tamsweg District
      • Murwinkel
        • Rotgülden
- Putz, H.; Paar, W. H.; Topa, D.; Horner, J.; Lüders, V. (2003): Structurally controlled gold and sulfosalt ore mineralization: the Altenberg example, Salzburg Province, Austria. Mineralogy and Petrology 78, 111-138.
      • Ramingstein
Handbook of Mineralogy
Bolivia (TL)
  • Potosí
    • Sud Chichas Province
      • Chocaya-Animas (Animas-Chocaya)
[MinRec 32:461]; Torró, L., Cazorla, M., Melgarejo, J. C., Camprubí, A., Tarrés, M., Gemmrich, L., ... & Mollinedo, D. (2019). Indium Mineralization in the Volcanic Dome-Hosted Ánimas–Chocaya–Siete Suyos Polymetallic Deposit, Potosí, Bolivia. Minerals, 9(10), 604.
          • Colorada vein
Topa, D., Paar, W.H., Makovicky, E., Stanley, C.J., Roberts, A.C. (2016): Oscarkempffite, Ag10Pb4(Sb17Bi9)Σ26S48, a new Sb-Bi member of the lillianite homologous series. Mineralogical Magazine, 80, 809-817
[MinRec 32:461]
Kempff, O., Paar, W.H., Tawackoli, S.: "Minerales de Bolivia", 115pp (La Paz, 2009)
  • Arica y Parinacota
    • Parinacota Province
      • Ticnamar area
Cecioni A, Cornejo C, Ruz L.; Choquelimpie, un yacimiento epitermal", Actas n. 1 del Congreso Geológico Chileno, pag.181/183, agosto 2000; Econ Geol (1991) 86:1206-1221
  • Coquimbo
    • Elqui Province
Handbook of Mineralogy
  • Guangxi
    • Hechi
      • Nandan County
        • Dachang Sn-polymetallic ore field
Yingchen Ren (1999): Contributions to Geology and Mineral Resources Research 14(1), 1-12, 38
  • Inner Mongolia
    • Hulunbuir City (Hulunbei'er Prefecture)
      • New Barag Right Banner (Xin Barag Youqi)
Zhicheng Lu, Peiping Zhang, Guozheng Duan, Libo Hao, and Dianchao Li (2002): Acta Mineralogica Sinica 22(1), 75-80
  • Jiangxi
    • Ganzhou
      • Yudu Co.
        • Yinkeng polymetallic ore field
Mingxing Shi and Guirong Gao (2006): Resources Survey and Environment 27(2), 164-172
Czech Republic
  • Central Bohemian Region
Pažout, R., Sejkora, J., Šrein, V. (2017): Bismuth and bismuth–antimony sulphosalts from Kutná Hora vein Ag–Pb–Zn ore district, Czech Republic. Journal of Geosciences 62, 59-76.
      • Kutná Hora
Pazout, R., Sejkora, J., & Srein, V. (2017). Bismuth and bismuth-antimony sulphosalts from Kutna Hora vein Ag-Pb-Zn ore district, Czech Republic. Journal of GEOsciences, 62(1), 59-76.
  • Grand Est
    • Haut-Rhin
      • Colmar-Ribeauvillé
        • Ste Marie-aux-Mines
P&T N°23-24, H. BARI 1982, Minéralogie des filons du Neuenberg à Sainte Marie aux Mines (Haut-Rhin).
            • Sankt Jakob vein
Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
This mine worked the same vein as Gabe gottes mine. From the 19th century, ore from a large part of the Saint-Jacques mine network was transported to level -40 of Gabe Gottes before being sent to the processing plant. The mineralization of this sector is therefore very comparable to that of Gabe-Gotes.
  • Nouvelle-Aquitaine
    • Haute-Vienne
      • Limoges
        • Saint-Yrieix-la-Perche
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
  • Pays de la Loire
    • Vendée
      • La Roche-sur-Yon
Y. Moëlo, E. Makovicky and S. Karup-Moller : "Sulfures complexes plombo-argentifères : minéralogie et cristallochimie de la série andorite-fizelyite", Documents du BRGM N° 167, 1989.
  • Hokkaidō Prefecture
    • Ishikari Subprefecture
Mineral.Journ.Japan (1985) 12, 341-348
  • Miyagi Prefecture
    • Kurihara City
The Mineral Species of Japan (5th ed) Matsubara
  • Yamagata Prefecture
    • Nanyō City
The Mineral Species of Japan (5th ed) Matsubara
  • Huancavelica
    • Angaraes Province
Crowley, Jack A., Currier, Rock H., & Szenics, Terry (1997) Mines and Minerals of Peru. Mineralogical Record, Vol.28, No.4. 98p.
Handbook of Mineralogy
    • Castrovirreyna Province
      • Castrovirreyna District
Lewis Jr, R. W. (1964). The geology, mineralogy and paragenesis of the Castrovirreyna lead-zinc-silver deposits, Peru (OFR No. 64-103). US Geological Survey,.
Handbook of Mineralogy; Lewis Jr, R. W. (1964). The geology, mineralogy and paragenesis of the Castrovirreyna lead-zinc-silver deposits, Peru (OFR No. 64-103). US Geological Survey,.
  • Lower Silesian Voivodeship
    • Kłodzko County
      • Gmina Stronie Śląskie
Eligiusz Szełęg collection (SEM/EDS identification)
  • Sakha Republic (Yakutia)
    • Indigirka River Basin
      • Ust'-Nera
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; American Mineralogist, Volume 79, pages 763-767, 1994
  • Košice Region
    • Rožňava District
      • Rožňava
Pauliš P., Ďuďa R., 2002:Nejznámejší mineralogická nalezište Slovenska. Kuttna, Kutná Hora, 136p
  • Gorno-Badakhshan
    • Pamir Silver District
      • Bazardara ore cluster
Pavlova, G.G., and Borisenko, A.S. (2009): Ore Geology Reviews 35, 164-185.
Pavlova, G.G., and Borisenko, A.S. (2009): Ore Geology Reviews 35, 164-185.
  • Alaska
    • Bethel Census Area
      • Aniak Mining District
U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
  • Montana
    • Flathead Co.
      • Hog Heaven Mining District (Flathead Mining District)
        • Kofford Ridge
Mineral and/or Locality  
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