Aramayoite
A valid IMA mineral species - grandfathered
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About Aramayoite
Don Felix Avelino Aramayo
Formula:
Ag3Sb2(Bi,Sb)S6
End-member formula: Ag3Sb2BiS6. Formerly given as Ag(Sb,Bi)S2.
Colour:
Iron-black; deep red (transmitted light)
Lustre:
Metallic
Hardness:
2½
Specific Gravity:
5.602
Crystal System:
Triclinic
Name:
Named in honor of Don Felix Avelino Aramayo (23 June 1846, Paris, France - 5 May 1929, Arcangues, France), Managing Director of the Compagnie Aramayo de Mines en Bolivie.
Type Locality:
Isostructural with:
This page provides mineralogical data about Aramayoite.
Unique Identifiers
Mindat ID:
310
Long-form identifier:
mindat:1:1:310:0
IMA Classification of Aramayoite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1926
Classification of Aramayoite
2.HA.25
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)
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)
3.7.4.1
3 : SULFOSALTS
7 : ø = 2
3 : SULFOSALTS
7 : ø = 2
5.2.16
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
2 : Sulpharsenites etc. of Ag
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
2 : Sulpharsenites etc. of Ag
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Ary | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Ara | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Aramayoite
Metallic
Transparency:
Opaque
Colour:
Iron-black; deep red (transmitted light)
Streak:
Black
Hardness:
2½ on Mohs scale
Tenacity:
Sectile
Cleavage:
Perfect
{010} perfect; {100} fair; {001} poor.
{010} perfect; {100} fair; {001} poor.
Parting:
{101} frequent.
Density:
5.602 g/cm3 (Measured) 5.624 g/cm3 (Calculated)
Optical Data of Aramayoite
Anisotropism:
Very high in oil
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 400nm | 38.9% | 43.4% |
| 420nm | 38.8% | 42.5% |
| 440nm | 38.5% | 41.9% |
| 460nm | 38.4% | 41.6% |
| 480nm | 38.2% | 41.1% |
| 500nm | 38.0% | 40.9% |
| 520nm | 37.8% | 40.5% |
| 540nm | 37.5% | 40.2% |
| 560nm | 37.3% | 40.0% |
| 580nm | 37.1% | 40.1% |
| 600nm | 37.0% | 40.1% |
| 620nm | 36.7% | 39.9% |
| 640nm | 36.6% | 39.5% |
| 660nm | 36.2% | 39.1% |
| 680nm | 36.1% | 39.0% |
| 700nm | 36.3% | 39.8% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 43.4%.
R1 shown in black, R2 shown in red
Colour in reflected light:
White
Internal Reflections:
Red
Pleochroism:
Visible
Comments:
Distinct in oil
Chemistry of Aramayoite
Mindat Formula:
Ag3Sb2(Bi,Sb)S6
End-member formula: Ag3Sb2BiS6. Formerly given as Ag(Sb,Bi)S2.
End-member formula: Ag3Sb2BiS6. Formerly given as Ag(Sb,Bi)S2.
Element Weights:
Elements listed:
Common Impurities:
Cu,Fe
Crystallography of Aramayoite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.74 Å, b = 8.84 Å, c = 8.32 Å
α = 100.7°, β = 90°, γ = 103.9°
α = 100.7°, β = 90°, γ = 103.9°
Ratio:
a:b:c = 0.876 : 1 : 0.941
Unit Cell V:
542.40 ų (Calculated from Unit Cell)
Z:
6
Morphology:
Thin plates
Twinning:
About [_101] with composition plane near {_101}
Crystallographic forms of Aramayoite
Crystal Atlas:
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Aramayoite - Tabular {010}
3d models and HTML5 code kindly provided by
www.smorf.nl.
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0002821 | Aramayoite | Effenberger 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 87 753-764 |  | 2002 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 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 Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-𝑇 alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Geological Setting:
Hydrothermal silver tin ores.
Type Occurrence of Aramayoite
General Appearance of Type Material:
An irregular pocket, about 8 x 6 cm. Irregular and confused aggregate of bright cleavage surfaces with striated areas at the edges, similar to 'books' of mica.
Place of Conservation of Type Material:
The Natural History Museum, London, England, 1926,292, 1940,10.
Royal Ontario Museum, Toronto, Ontario, Canada, M15125.
National Museum of Natural History, Washington, D.C., USA, 95553.
Royal Ontario Museum, Toronto, Ontario, Canada, M15125.
National Museum of Natural History, Washington, D.C., USA, 95553.
Geological Setting of Type Material:
Hydrothermal silver tin ores.
Associated Minerals at Type Locality:
Other Language Names for Aramayoite
Dutch:Aramayoiet
French:Aramayoite
German:Aramayoit
Japanese:アラマヨ鉱
Norwegian:Aramayoitt
Russian:Арамайоит
Simplified Chinese:硫铋锑银矿
Spanish:Aramayoita
Common Associates
Associated Minerals Based on Photo Data:
| 9 photos of Aramayoite associated with Freibergite Subgroup | (Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1 |
| 9 photos of Aramayoite associated with Stannite | Cu2FeSnS4 |
| 7 photos of Aramayoite associated with Pyrite | FeS2 |
| 4 photos of Aramayoite associated with Geocronite | Pb14Sb6S23 |
| 4 photos of Aramayoite associated with Chalcopyrite | CuFeS2 |
| 3 photos of Aramayoite associated with Arsenopyrite | FeAsS |
| 3 photos of Aramayoite associated with Pyrargyrite | Ag3SbS3 |
| 3 photos of Aramayoite associated with Quartz | SiO2 |
| 2 photos of Aramayoite associated with Jordanite | Pb14As6S23 |
| 2 photos of Aramayoite associated with Xanthoconite | Ag3AsS3 |
Related Minerals - Strunz-mindat Grouping
| 2.HA.05 | Grundmannite | CuBiSe2 |
| 2.HA.05 | Emplectite | CuBiS2 |
| 2.HA.05 | Příbramite | CuSbSe2 |
| 2.HA.05 | Hansblockite | (Cu,Hg)(Bi,Pb)Se2 |
| 2.HA.05 | Chalcostibite | CuSbS2 |
| 2.HA.10 | Miargyrite | AgSbS2 |
| 2.HA.20 | Sunshuite | |
| 2.HA.20 | Garavellite | FeSbBiS4 |
| 2.HA.20 | Berthierite | FeSb2S4 |
| 2.HA.20 | Graţianite | MnBi2S4 |
| 2.HA.20 | Clerite | MnSb2S4 |
| 2.HA.25 | Baumstarkite | Ag3Sb3S6 |
| 2.HA.30 | Zhonghongite | Cu29(As,Sb)12S33 |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Aramayoite
mindat.org URL:
https://www.mindat.org/min-310.html
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Please feel free to link to this page.
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References for Aramayoite
Reference List:
Ramdohr, Paul (1969) The Ore Minerals and their Intergrowths. Pergamon Press, Oxford. 1174pp. doi:10.1016/c2013-0-10027-x
Localities for Aramayoite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Argentina | |
| Milka K. de Brodtkorb (1973) |
| e-rocks.com (n.d.) +1 other reference |
| ROBL +2 other references |
| Brodtkorb (2002) | |
| Jovic et al. (2011) |
Austria | |
| Putz +4 other references |
| Mineralogical Society of America - ... |
Bolivia (TL) | |
| Wilson (2001) +1 other reference |
| Topa et al. (2016) |
| Wilson (2001) | |
| Kempff et al. (La Paz, 2009) |
Chile | |
| Gröpper et al. (1991) +1 other reference |
| Mineralogical Society of America - ... |
China | |
| Yingchen Ren (1999) |
| Zhicheng Lu et al. (2002) |
| Mingxing Shi and Guirong Gao (2006) |
Czech Republic | |
| Pažout et al. (2017) |
| Pažout et al. (2017) |
France | |
| Bari (1982) |
| Wittern +1 other reference |
| This mine worked the same vein as Gabe ... +2 other references | |
| Anthony et al. (1990) |
| Moëlo et al. (1989) |
Italy | |
| Stara et al. (1999) |
Japan | |
| SUGAKI et al. (1985) |
| The Mineral Species of Japan (5th ed) |
| The Mineral Species of Japan (5th ed) |
Peru | |
| Gibson (1992) |
| Crowley et al. (1997) |
| Mineralogical Society of America - ... | |
| Lewis Jr (1964) |
| Mineralogical Society of America - ... +2 other references | |
Poland | |
| Eligiusz Szełęg collection (SEM/EDS identification) |
Russia | |
| American Mineralogist +1 other reference |
Slovakia | |
| Pauliš et al. (2002) |
Tajikistan | |
| Pavlova et al. (2009) |
| Pavlova et al. (2009) | |
USA | |
| - (2008) |
| ... |
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Ánimas Mine, Chocaya-Animas mining district, Atocha Municipality, Sud Chichas Province, Potosí, Bolivia