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Aschamalmite

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About AschamalmiteHide

Formula:
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.


Classification of AschamalmiteHide

Approved
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

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

Type:
Anisotropic
Anisotropism:
moderate from gray to red-brown
Reflectivity:
470nmR1=45.1%R2= 48.1%
546nmR1=43.4%R2= 46.3%
589nmR1=42.9%R2= 46.3%
650nmR1=42.9%R2= 46.3%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 48.1%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Creamy white

Chemical Properties of AschamalmiteHide

Formula:
Pb6Bi2S9
IMA Formula:
Pb6-3xBi2+xS9

Crystallography of AschamalmiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
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 5cm
Comment:
SG C2/m

X-Ray Powder DiffractionHide

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

Type Occurrence of AschamalmiteHide

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.

Synonyms of AschamalmiteHide

Other Language Names for AschamalmiteHide

Relationship of Aschamalmite to other SpeciesHide

Other Members of this group:
Andorite IVPb18Ag15Sb47S96Mon. 2 : P2
Andorite VIAgPbSb3S6Orth. mm2 : Pmn21
AndreadiniiteCuHgAg7Pb7Sb24S48Mon. 2/m : P21/b
ArsenquatrandoriteAg17.6Pb12.8Sb38.1As11.5S96Mon. 2/m : P21/b
Clino-oscarkempffiteAg15Pb6Sb21Bi18S72Mon. 2/m : P21/b
ErzwiesiteAg8Pb12Bi16S40Orth. mmm (2/m 2/m 2/m) : Pbcn
EskimoiteAg7Pb10Bi15S36Mon.
FizélyiteAg5Pb14Sb21S48 Mon. 2/m
GustaviteAgPbBi3S6Orth. mmm (2/m 2/m 2/m)
HeyrovskýitePb6Bi2S9Orth. mmm (2/m 2/m 2/m) : Cccm
JasrouxiteAg16Pb4(Sb24As16)S72Tric. 1 : P1
LillianitePb3-2xAgxBi2+xS6Orth. mmm (2/m 2/m 2/m)
OscarkempffiteAg10Pb4(Sb17Bi9)S48Orth. mm2
OurayiteAg3Pb4Bi5S13Orth.
OyoniteAg3Mn2Pb4Sb7As4S24Mon. 2/m
RamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24Mon. 2/m
RoshchiniteAg19Pb10Sb51S96Orth.
SchirmeritePbAgBi3S6 - Pb3Ag1.5Bi3.5S9Orth.
StaročeskéiteAg0.70Pb1.60(Bi1.35Sb1.35)Σ2.70S6Orth. mmm (2/m 2/m 2/m) : Cmcm
TerrywallaceiteAgPb(Sb,Bi)3S6 Mon. 2/m : P21/b
TreasuriteAg7Pb6Bi15S32Mon.
UchucchacuaiteAgMnPb3Sb5S12Orth. mmm (2/m 2/m 2/m) : Pmmm
UstarasitePb(Bi,Sb)6S10 (?)
VikingiteAg5Pb8Bi13S30Mon. 2/m : B2/m
XilingolitePb3Bi2S6Mon.

Common AssociatesHide

AlbiteNa(AlSi3O8)
CalciteCaCO3
Chlorite GroupA group of mostly monoclinic (also triclinic or orthorhombic) micaceous phyllosilicate minerals with a structure ...
CosalitePb2Bi2S5
GalenaPbS
OrthoclaseK(AlSi3O8)
QuartzSiO2
Associated Minerals Based on Photo Data:
Gold2 photos of Aschamalmite associated with Gold on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.JB.Andorite VIAgPbSb3S6Orth. mm2 : Pmn21
2.JB.05DiaphoriteAg3Pb2Sb3S8Mon. 2/m : P21/b
2.JB.10CosalitePb2Bi2S5Orth. mmm (2/m 2/m 2/m)
2.JB.15FreieslebeniteAgPbSbS3Mon. 2/m : P21/b
2.JB.15MarriteAgPbAsS3Mon. 2/m : P21/b
2.JB.20CannizzaritePb48Bi56S132Mon. 2/m : P21/m
2.JB.20WittitePb9Bi12(S,Se)27Mon.
2.JB.25aJunoiteCu2Pb3Bi8(S,Se)16Mon. 2/m : B2/m
2.JB.25iNeyiteAg2Cu6Pb25Bi26S68Mon.
2.JB.25cNordströmiteCuPb3Bi7(Se4S10)Mon.
2.JB.25gNuffielditeCu1.4Pb2.4Bi2.4Sb0.2S7Orth.
2.JB.25dProuditeCuPb7.5Bi9.33(S,Se)22Mon. 2/m : B2/m
2.JB.25hWeibullitePb5Bi8Se7S11Orth.
2.JB.25bFelbertaliteCu2Pb6Bi8S19Mon. 2/m : B2/m
2.JB.25jRouxeliteCu2HgPb23Sb27S65.5Mon. 2/m : B2/m
2.JB.25fÁngelaiteCu2AgPbBiS4Orth. mmm (2/m 2/m 2/m) : Pnma
2.JB.25iCuproneyiteCu7Pb27Bi25S68Mon. 2/m : B2/m
2.JB.30aGeocronitePb14(Sb,As)6S23Mon. 2/m : P21/m
2.JB.30aJordanitePb14(As,Sb)6S23Mon. 2/m : P21/m
2.JB.30bKirkiitePb10Bi3As3S19Mon. 2/m : P21/m
2.JB.30cTsugaruitePb4As2S7Orth.
2.JB.35cPillaitePb9Sb10S23ClO0.5Mon. 2/m : B2/m
2.JB.35aZinkenitePb9Sb22S42Hex. 6 : P63
2.JB.35bScainiitePb14Sb30S54O5Mon. 2/m : B2/m
2.JB.35dPellouxite(Cu,Ag)Pb10Sb12S27O(Cl,S)0.6Mon. 2/m : B2/m
2.JB.35fTubuliteAg2Pb22Sb20S53 Mon. m : Pb
2.JB.35eChovanitePb15-2xSb14+2xS36Ox (x ~ 0.2)Mon. 2/m : B2/m
2.JB.40aBursaitePb5Bi4S11 (?)Orth.
2.JB.40bEskimoiteAg7Pb10Bi15S36Mon.
2.JB.40aFizélyiteAg5Pb14Sb21S48 Mon. 2/m
2.JB.40aGustaviteAgPbBi3S6Orth. mmm (2/m 2/m 2/m)
2.JB.40aLillianitePb3-2xAgxBi2+xS6Orth. mmm (2/m 2/m 2/m)
2.JB.40cOurayiteAg3Pb4Bi5S13Orth.
2.JB.40aRamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24Mon. 2/m
2.JB.40aRoshchiniteAg19Pb10Sb51S96Orth.
2.JB.40dSchirmeritePbAgBi3S6 - Pb3Ag1.5Bi3.5S9Orth.
2.JB.40aTreasuriteAg7Pb6Bi15S32Mon.
2.JB.40aUchucchacuaiteAgMnPb3Sb5S12Orth. mmm (2/m 2/m 2/m) : Pmmm
2.JB.40eUstarasitePb(Bi,Sb)6S10 (?)
2.JB.40aVikingiteAg5Pb8Bi13S30Mon. 2/m : B2/m
2.JB.40aXilingolitePb3Bi2S6Mon.
2.JB.40bHeyrovskýitePb6Bi2S9Orth. mmm (2/m 2/m 2/m) : Cccm
2.JB.40UM1988-05-S:AgBiCuHgPb(Hg,Ag,Cu,Pb)5Pb5Bi11S27
2.JB.40UM1988-06-S:AgBiCuHgPb(Pb,Hg)12(Cu,Ag)3(Bi,Sb)10(S,Te)27
2.JB.40aAndorite IVPb18Ag15Sb47S96Mon. 2 : P2
2.JB.55GratonitePb9As4S15Trig. 3m : R3m
2.JB.60MarrucciiteHg3Pb16Sb18S46Mon. 2/m : B2/m
2.JB.65VurroitePb20Sn2(Bi,As)22S54Cl6Orth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.6.1HerzenbergiteSnSOrth.
3.6.2Ottemannitebeta Sn2S3
3.6.3BerndtiteSnS2Trig. 3m (3 2/m) : P3m1
3.6.4StistaiteSnSbTrig. 3m (3 2/m) : R3m
3.6.5GalenaPbSIso. m3m (4/m 3 2/m) : Fm3m
3.6.6ClausthalitePbSeIso. m3m (4/m 3 2/m) : Fm3m
3.6.7AltaitePbTeIso. m3m (4/m 3 2/m) : Fm3m
3.6.8Furutobeite(Cu,Ag)6PbS4Mon.
3.6.10Betekhtinite(Cu,Fe)21Pb2S15Orth. mmm (2/m 2/m 2/m) : Immm
3.6.11Shadlunite(Pb,Cd)(Fe,Cu)8S8

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 AschamalmiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mumme, W. G., Niedermayr, G., Kelly, P. R., Paar, W. H. (1983): Aschamalmite, Pb5.92Bi2.06S9, from Untersulzbach Valley in Salzburg, Austria - “monoclinic heyrovskyite”, Neues Jahrbuch für Mineralogie, Monatshefte, 1983, 433-444.
American Mineralogist: 69: 810.
Boiocchi, M. & Callegari, A. (2008): Aschamalmite (Pb6Bi2S9): crystal structure refinement and ordering scheme for Pb and Bi atoms. Plinius, 34, 220.
Callegari, A.M. & Boiocchi, M. (2009): Aschamalmite (Pb6Bi2S9): crystal structure and ordering scheme for Pb and Bi atoms. Mineralogical Magazine, 73, 83-94.

Internet Links for AschamalmiteHide

Localities for AschamalmiteHide

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.
Austria
 
  • Carinthia
    • Hohe Tauern
      • Goldberg group
        • Innerfragant
          • Wurten
Blass, G. & Graf, H.-W. (2001): 1255. Plumbojarosit, Schwefel, unbekannte Wismut-Sekundärphasen sowie Aschamalmit, Gersdorffit und ein nicht eindeutig bestimmtes Wismuterz von der Feldsee Scharte im Wurtengebiet, Hohe Tauern, Kärnten. Pp. 158-159 in: NIEDERMAYR, G., F. BERNHARD, G. BLASS, H.-P. BOJAR, F. BRANDSTÄTTER, K. ETTINGER, H.-W. GRAF, V. M. F. HAMMER, B. LEIKAUF, H. MEDITZ, B. MOSER, W. POSTL, J. TAUCHER & P. TOMAZIC (2001): Neue Mineralfunde aus Österreich L. – Carinthia II, 191./111.: 141-185; U. Kolitsch (SXRD-analysis)
  • Salzburg
    • Hohe Tauern
      • Habach valley
        • Moar Alp
Natural History Museum Vienna collection (SXRD-analysed by Uwe Kolitsch)
        • Nasenkopf
          • Leckbachgraben (Leckbachrinne)
            • Emerald deposit
C Mavris collection, not analyzed
Bayerl, R. (2004): Krupkait, ein Erstfund aus dem Habachtal. Lapis 29 (7-8), 54-56. (in German)
Lapis 25(12):42 (2000)
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
Kolitsch, U. (2012): 1748) Aschamalmit von der Wiesbachrinne im Habachtal, Salzburg. P. 153 in Niedermayr, G. et al. (2012): Neue Mineralfunde aus Österreich LXI. Carinthia II, 202./122., 123-180.
      • Untersulzbach valley
        • Ascham Alp - Breitfuß - Sonntagskopf area
Neues Jahrb.Min.,Mh.(1983) 433-444
NIEDERMAYR, G., W. POSTL & F. WALTER (1984): Neue Mineralfunde aus Österreich XXXIII. Carinthia II, 174./94.: 243-260 [cited also in A. Strasser: Die Minerale Salzburgs (1989)]
Italy
 
  • Piedmont
    • Torino Province
      • Susa Valley
        • Bussoleno
          • Tignai
Callegari, A., Boiocchi, M., Cech, G. (2008). Ritrovamento di aschamalmite in Val di Susa. Micro (notizie mineralogiche), 1/2008, 125-128. Boiocchi, M. & Callegari, A. (2008): Aschamalmite (Pb6Bi2S9): crystal structure refinement and ordering scheme for Pb and Bi atoms. Plinius, 34, 220.
    • Verbano-Cusio-Ossola Province
      • Ossola Valley
        • Vigezzo Valley
          • Santa Maria Maggiore
            • Basso Valley
              • Cedo Alp
Perchiazzi N. (1989) - Aschamalmite: secondo ritrovamento in natura presso l'Alpe Cedo, val d'Ossola - Rivista Mineralogica Italiana, Milano, vol. 4, pp.238-240
Mali
 
  • Sikasso Region
    • Cercle de Yanfolila
Sangaré, A., Driouch, Y., Salvi, S., Féménias, O., Siebenaller, L., Belkasmi, M., ... & Debat, P. (2014). Géologie des minéralisations aurifères du gisement tardi-éburnéen de Kalana (Birimien, Sud-Ouest du Mali) Geology of Kalana late-eburnean gold deposit (Birimian, southwestern Mali). Bulletin de l’Institut Scientifique, Rabat, (36), 00-00.
Romania
 
  • Bihor Co.
    • Nucet
www.minerals-of-the carpathians.eu (2009)
Serbia
 
  • Moravica District
    • Gornji Milanovac
Stojanovic, J., Radosavljević-Mihajlović, A., Radosavljević, S., Vuković, N., Pačevski, A. (2016): Occurrence of Ag-bearing aschamalmite from the Rudnik Pb–Zn/Cu,Ag,Bi,W polymetallic deposit, Šumadija Metallogenic District, Serbia. Periodico di Mineralogia: 85, (in press); http://forum.amiminerals.it/viewtopic.php?f=5&t=12614 (2016)
Switzerland
 
  • Wallis (Valais)
    • Collonges
      • Plex
Meisser, N. (2012): La minéralogie de l'uranium dans le massif des Aiguilles Rouges. Matér. Géol. Suisse, Sér. géotech. 96, 183 p.
USA
 
  • New Mexico
    • Hidalgo Co.
      • Peloncillo Mts
        • San Simon District
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
Mineral and/or Locality  
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