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Aschamalmite

A valid IMA mineral species
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About AschamalmiteHide

Formula:
Pb6-3xBi2+xS9
Simplified Pb6Bi2S9.
Colour:
Lead-grey
Lustre:
Metallic
Hardness:
Specific Gravity:
7.33 (Calculated)
Crystal System:
Monoclinic
Name:
For the type locality
Closely related to heyrovskýite.
Aschamalmite has a monoclinically distorted structure (due to Pb-Bi ordering), unlike heyrovskýite (orthorhombic). Aschamalmite is apparently only stable <350°C.


Unique IdentifiersHide

Mindat ID:
386
Long-form identifier:
mindat:1:1:386:3

IMA Classification of AschamalmiteHide

Classification of AschamalmiteHide

2.JB.40b

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb
3.1.11.1

3 : SULFOSALTS
1 : ø > 4
3.6.9

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
6 : Sulphides etc. of Sb and Pb

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
AhmIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of AschamalmiteHide

Metallic
Transparency:
Opaque
Colour:
Lead-grey
Hardness:
3½ on Mohs scale
Hardness:
VHN50=150 - 181 kg/mm2 - Vickers
Cleavage:
Perfect
on {001}
Density:
7.33 g/cm3 (Calculated)

Optical Data of AschamalmiteHide

Anisotropism:
moderate from gray to red-brown
Reflectivity:
WavelengthR1 (%)R2 (%)
470nm45.1% 48.1%
546nm43.4% 46.3%
589nm42.9% 46.3%
650nm42.9% 46.3%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 48.1%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Creamy white

Chemistry of AschamalmiteHide

Mindat Formula:
Pb6-3xBi2+xS9

Simplified Pb6Bi2S9.
Element Weights:
Element% weight
Pb63.762 %
Bi21.437 %
S14.801 %

Calculated from ideal end-member formula.

Crystallography of AschamalmiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 13.719(1) Å, b = 4.132(1) Å, c = 31.419(3) Å
β = 90.94(1)°
Ratio:
a:b:c = 3.32 : 1 : 7.604
Unit Cell V:
1,780.81 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Prismatic lath-like crystals to 5 cm.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0014588AschamalmiteCallegari A M, Boiocchi M (2009) Aschamalmite (Pb6Bi2S9): crystal structure and ordering scheme for Pb and Bi atoms Mineralogical Magazine 73 83-942009Susa Valley, Piedmont, Italy0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.525 Å(42)
3.426 Å(100)
3.378 Å(88)
2.941 Å(54)
2.926 Å(54)
2.861 Å(48)
2.067 Å(42)
Comments:
Ascham Alm, Austria.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])
Geological Setting:
Alpine cleft veins

Type Occurrence of AschamalmiteHide

General Appearance of Type Material:
Lath-like crystals to 5 cm in length or as thick, slightly bent plates up to 1 cm2. Most crystals are heavily altered to a mixture of bismutite and other unidentified phases.
Place of Conservation of Type Material:
Museum of Natural History, Vienna, Austria; Division of Mineral Chemistry, C.S.I.R.O., Port Melbourne, Victoria, Australia; National Museum of Natural History, Washington, D.C., USA, 160379.
Associated Minerals at Type Locality:

Synonyms of AschamalmiteHide

Other Language Names for AschamalmiteHide

Relationship of Aschamalmite to other SpeciesHide

Other Members of Lillianite Homologous Series:
AndreadiniiteCuHgAg7Pb7Sb24S48Mon. 2/m : P21/b
ArsenquatrandoriteAg17.6Pb12.8Sb38.1As11.5S96Mon. 2/m : P21/b
BaiamareiteAg4Pb12Fe4Sb20S48Mon. 2/m
BrusnitsyniteMn3CuPbAs3Sb2S12Mon. 2/m : P21/b
Clino-oscarkempffiteAg15Pb6Sb21Bi18S72Mon. 2/m : P21/b
ErzwiesiteAg8Pb12Bi16S40Orth. mmm(2/m2/m2/m) : Cmcm
EskimoiteAg7Pb10Bi15S36Mon.
FizélyiteAg5Pb14Sb21S48 Mon. 2/m
GustaviteAgPbBi3S6Orth. mmm(2/m2/m2/m)
HeyrovskýitePb6Bi2S9Orth. mmm(2/m2/m2/m) : Cccm
HolubiteAg3Pb6(Sb8Bi3)S24Mon. 2/m
JasrouxiteAg16Pb4(Sb25As15)S72Tric. 1 : P1
LasmanisiteAg12Pb13Mn11Sb44S96Orth. 222 : P212121
LazerckeriteAg3.75Pb4.50(Sb7.75Bi4)S24Mon. 2/m : P21/b
LillianitePb3-2xAgxBi2+xS6Orth. mmm(2/m2/m2/m)
MenchettiiteAgPb2.40Mn1.60Sb3As2S12Mon. 2/m : P21/b
OscarkempffiteAg10Pb4(Sb17Bi9)S48Orth. mm2
OurayiteAg3Pb4Bi5S13Orth.
OyoniteAg3Mn2Pb4Sb7As4S24Mon. 2/m
QuatrandoriteAgPbSb3S6Mon. 2/m : P21/b
RamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24Mon. 2/m
RoshchiniteAg19Pb10Sb51S96Orth. mmm(2/m2/m2/m) : Pnma
'Schirmerite'PbAgBi3S6 - Pb3Ag1.5Bi3.5S9Orth.
SenandoriteAgPbSb3S6Orth. mm2 : Pmn21
StaročeskéiteAg0.70Pb1.60(Bi1.35Sb1.35)Σ2.70S6Orth. mmm(2/m2/m2/m) : Cmcm
TarutinoiteAg3Pb7Bi7S19Mon. 2/m : B2/m
TerrywallaceiteAgPb(Sb,Bi)3S6Mon. 2/m : P21/b
TreasuriteAg7Pb6Bi15S32Mon.
UchucchacuaiteAgMnPb3Sb5S12Orth. mmm(2/m2/m2/m) : Pmmm
UstarasitePb(Bi,Sb)6S10 (?)
VikingiteAg5Pb8Bi13S30Mon. 2/m : B2/m
XilingolitePb3Bi2S6Mon.

Common AssociatesHide

Associations Based on Photo Data:
33 photos of Aschamalmite associated with QuartzSiO2
3 photos of Aschamalmite associated with Native GoldAu
1 photo of Aschamalmite associated with BeyeriteCa(BiO)2(CO3)2

Related Minerals - Strunz-mindat GroupingHide

2.JB.Clino-oscarkempffiteAg15Pb6Sb21Bi18S72Mon. 2/m : P21/b
2.JB.ArsenquatrandoriteAg17.6Pb12.8Sb38.1As11.5S96Mon. 2/m : P21/b
2.JB.GinelfiteAg2(Ag0.5Fe)TlPb23.5(Sb,As)33.5S76Tric. 1 : P1
2.JB.AndreadiniiteCuHgAg7Pb7Sb24S48Mon. 2/m : P21/b
2.JB.ChukotkaiteAgPb7Sb5S15Mon. 2/m : P21/b
2.JB.SelenojunoiteCu2Pb3Bi8Se16Mon. 2/m : B2/m
2.JB.LechneriteAg10Cu4HgPb33Sb58S128Tric. 1 : P1
2.JB.Cuprosenandorite Ag16Cu8Pb24Sb72S144Orth. mm2 : Pna21
2.JB.MorleyiteAg2CuPb25Sb24As4S68.5Tric. 1 : P1
2.JB.LazerckeriteAg3.75Pb4.50(Sb7.75Bi4)S24Mon. 2/m : P21/b
2.JB.LasmanisiteAg12Pb13Mn11Sb44S96Orth. 222 : P212121
2.JB.MontpelvouxiteAgPb16Sb27As18S84Tric. 1 : P1
2.JB.SenandoriteAgPbSb3S6Orth. mm2 : Pmn21
2.JB.OscarkempffiteAg10Pb4(Sb17Bi9)S48Orth. mm2
2.JB.05DiaphoriteAg3Pb2Sb3S8Mon. 2/m : P21/b
2.JB.10CosalitePb2Bi2S5Orth. mmm(2/m2/m2/m)
2.JB.15MarriteAgPbAsS3Mon. 2/m : P21/b
2.JB.15FreieslebeniteAgPbSbS3Mon. 2/m : P21/b
2.JB.20CannizzaritePb48Bi56S132Mon. 2/m : P21/m
2.JB.20WittitePb9Bi12(S,Se)27Mon.
2.JB.25jRouxeliteCu2HgPb23Sb27S65.5Tric. 1 : P1
2.JB.25iNeyiteAg2Cu6Pb25Bi26S68Mon. 2/m : B2/m
2.JB.25aJunoiteCu2Pb3Bi8(S,Se)16Mon. 2/m : B2/m
2.JB.25fÁngelaiteCu2AgPbBiS4Orth. mmm(2/m2/m2/m) : Pnma
2.JB.25eGalenobismutitePbBi2S4Orth. mmm(2/m2/m2/m)
2.JB.25cNordströmiteCuPb3Bi7(Se4S10)Mon. 2/m : P21/m
2.JB.25iCuproneyiteCu7Pb27Bi25S68Mon. 2/m : B2/m
2.JB.25gNuffielditeCu1.4Pb2.4Bi2.4Sb0.2S7Orth. mmm(2/m2/m2/m)
2.JB.25hWeibullitePb5Bi8Se7S11Orth. mmm(2/m2/m2/m) : Pnma
2.JB.25dProuditeCuPb7.5Bi9.33(S,Se)22Mon. 2/m : B2/m
2.JB.25bFelbertaliteCu2Pb6Bi8S19Mon. 2/m : B2/m
2.JB.30aJordanitePb14As6S23Mon. 2/m : P21/m
2.JB.30aGeocronitePb14Sb6S23Mon. 2/m : P21/m
2.JB.30aArsenmarcobaldiitePb12(As3.2Sb2.8)Σ6S21Tric. 1 : P1
2.JB.30bKirkiitePb10Bi3As3S19Mon. 2/m : P21/m
2.JB.30cTsugaruitePb28As15S50ClOrth. mm2 : Pnn2
2.JB.30aMarcobaldiitePb12(Sb3As2Bi)Σ6S21Tric. 1 : P1
2.JB.35dPellouxite(Cu,Ag)Pb10Sb12S27O(Cl,S)0.6Mon. 2/m : B2/m
2.JB.35eChovanitePb15-2xSb14+2xS36Ox (x ~ 0.2)Mon. 2/m : B2/m
2.JB.35aZinkenitePb9Sb22S42Hex. 6 : P63
2.JB.35cPillaitePb9Sb10S23ClO0.5Mon. 2/m : B2/m
2.JB.35bScainiitePb14Sb30S54O5Mon. 2/m : B2/m
2.JB.35fTubuliteAg2Pb22Sb20S53 Mon. m : Pb
2.JB.40aFizélyiteAg5Pb14Sb21S48 Mon. 2/m
2.JB.40aRamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24Mon. 2/m
2.JB.40eUstarasitePb(Bi,Sb)6S10 (?)
2.JB.40a'Bursaite'Pb5Bi4S11 (?)Orth.
2.JB.40'UM1988-05-S:AgBiCuHgPb'(Hg,Ag,Cu,Pb)5Pb5Bi11S27
2.JB.40'UM1988-06-S:AgBiCuHgPb'(Pb,Hg)12(Cu,Ag)3(Bi,Sb)10(S,Te)27
2.JB.40aTerrywallaceiteAgPb(Sb,Bi)3S6Mon. 2/m : P21/b
2.JB.40aJasrouxiteAg16Pb4(Sb25As15)S72Tric. 1 : P1
2.JB.40aTarutinoiteAg3Pb7Bi7S19Mon. 2/m : B2/m
2.JB.40aOyoniteAg3Mn2Pb4Sb7As4S24Mon. 2/m
2.JB.40bHeyrovskýitePb6Bi2S9Orth. mmm(2/m2/m2/m) : Cccm
2.JB.40aQuatrandoriteAgPbSb3S6Mon. 2/m : P21/b
2.JB.40aErzwiesiteAg8Pb12Bi16S40Orth. mmm(2/m2/m2/m) : Cmcm
2.JB.40aVikingiteAg5Pb8Bi13S30Mon. 2/m : B2/m
2.JB.40aLillianitePb3-2xAgxBi2+xS6Orth. mmm(2/m2/m2/m)
2.JB.40bBaiamareiteAg4Pb12Fe4Sb20S48Mon. 2/m
2.JB.40aStaročeskéiteAg0.70Pb1.60(Bi1.35Sb1.35)Σ2.70S6Orth. mmm(2/m2/m2/m) : Cmcm
2.JB.40aRoshchiniteAg19Pb10Sb51S96Orth. mmm(2/m2/m2/m) : Pnma
2.JB.40bEskimoiteAg7Pb10Bi15S36Mon.
2.JB.40aMenchettiiteAgPb2.40Mn1.60Sb3As2S12Mon. 2/m : P21/b
2.JB.40aHolubiteAg3Pb6(Sb8Bi3)S24Mon. 2/m
2.JB.40aBrusnitsyniteMn3CuPbAs3Sb2S12Mon. 2/m : P21/b
2.JB.40aTreasuriteAg7Pb6Bi15S32Mon.
2.JB.40cOurayiteAg3Pb4Bi5S13Orth.
2.JB.40aUchucchacuaiteAgMnPb3Sb5S12Orth. mmm(2/m2/m2/m) : Pmmm
2.JB.40d'Schirmerite'PbAgBi3S6 - Pb3Ag1.5Bi3.5S9Orth.
2.JB.40aXilingolitePb3Bi2S6Mon.
2.JB.40aGustaviteAgPbBi3S6Orth. mmm(2/m2/m2/m)
2.JB.55GratonitePb9As4S15Trig. 3m : R3m
2.JB.60MarrucciiteHg3Pb16Sb18S46Mon. 2/m : B2/m
2.JB.65VurroitePb20Sn2(Bi,As)22S54Cl6Mon. 2/m : B2/b
2.JB.65TazieffitePb20Cd2(As,Bi)22S50Cl10Mon. 2/m : B2/b
2.JB.70DaliranitePbHgAs2S5Mon.

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.

Internet Links for AschamalmiteHide

References for AschamalmiteHide

Localities for AschamalmiteHide

Showing 22 localities.

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.
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Locality ListHide

- 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). 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Austria
 
  • Carinthia
    • Spittal an der Drau District
      • Flattach
        • Wurten
U. Kolitsch (SXRD-analysis) +2 other references
  • Salzburg
    • Zell am See District
      • Bramberg am Wildkogel
        • Moar Alp (Moa Alp)
Natural History Museum Vienna collection (SXRD-analysed by Uwe Kolitsch)
        • Nasenkopf mountain
          • Leckbachgraben
Dr. Günter Grundmann collection
C Mavris collection
Sammer (2000)
Bayerl (2004)
Exel (1993)
Kolitsch (2012)
      • Neukirchen am Großvenediger
        • Ascham Alp - Breitfuß - Sonntagskopf area
Mumme et al. (1983)
NIEDERMAYR et al. (1984)
Bulgaria
 
  • Sofia Province
    • Etropole Municipality
Mladenova et al. (2017)
Italy
 
  • Piedmont
    • Metropolitan City of Turin
      • Bussoleno
        • Tignai
Callegari et al. (2008) +1 other reference
    • Verbano-Cusio-Ossola Province
      • Santa Maria Maggiore
        • Basso Valley
          • Cedo Alp
Perchiazzi N. (1989)
Kazakhstan
 
  • Akmola Region
    • Bulandy District
Kovalev et al. (2018)
Mali
 
  • Sikasso Region
    • Yanfolila Cercle
Sangaré et al. (2014)
Romania
 
  • Bihor County
    • Nucet
www.minerals-of-the carpathians.eu (2009)
Russia
 
  • Primorsky Krai
    • Dalnerechensky District
      • Malinovsky cluster
Grebennikova et al. (2023) +1 other reference
  • Zabaykalsky Krai
    • Gazimuro-Zavodsky District
      • Lugokan ore cluster
Redin et al. (2015) +2 other references
Serbia
 
  • Central Serbia
    • Moravica District
      • Gornji Milanovac
Mineco Limited
Slovakia
 
  • Banská Bystrica Region
    • Banská Štiavnica District
      • Banská Štiavnica
Mikuš et al. (2026)
Switzerland
 
  • Valais
    • Saint-Maurice
      • Collonges
        • Plex
Meisser (2012)
USA
 
  • New Mexico
    • Hidalgo County
      • Peloncillo Mountains
        • San Simon Mining District
Anthony et al. (1990)
 
and/or  
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