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Argentobaumhauerite

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About ArgentobaumhaueriteHide

Formula:
Ag1.5Pb22As33.5S72
Colour:
Steel grey
Lustre:
Metallic
Hardness:
3
Specific Gravity:
5.31 (Calculated)
Crystal System:
Triclinic
Member of:
Name:
Originally named Baumhauerite-2a for its similarity to baumhauerite with double length of "a" cell parameter. Renamed by IMA (IMA 15-F) as argentobaumhauerite.

The member of the sartorite group, described, as baumhauerite, by N1,2 = 3;4 = 3.5.

The name argenobaumhauerite replaces the former "baumhauerite-2a" which was formerly thought to be a mineral similar to baumhauerite but with a doubled length of the a cell parameter. There is Ag+As and Tl+As substitution for 2 Pb (Lengenbach material, used for structure refinement).

The structure is similar to that of baumhauerite, and consists of As-rich slabs and zigzag layers with Pb in trigonal prismatic coordination. Beside typical N=3 and N=4 baumhauerite slabs there are two distinct N=4 slabs: (1) with internal Pb and (2) with internal Ag+As instead of Pb.


Classification of ArgentobaumhaueriteHide

Approved
Notes:
Redefined by the IMA, Renamed by the IMA
Approval History:
Published without approval: 2015
2.HC.05b

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb
5.7.21

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
7 : Sulpharsenites etc. of Pb and other metals

Physical Properties of ArgentobaumhaueriteHide

Metallic
Transparency:
Opaque
Colour:
Steel grey
Streak:
Reddish brown
Hardness:
Hardness:
VHN100=156 - 165 - Vickers
Tenacity:
Brittle
Cleavage:
Perfect
Probably on {100}
Fracture:
Conchoidal
Density:
5.31 g/cm3 (Calculated)

Optical Data of ArgentobaumhaueriteHide

Type:
Anisotropic
Anisotropism:
Moderate; brownish grey, greenish grey, very pale bluish grey, pale greenish grey.
Reflectivity:
400nmR1=38.9%R2= 41.9%
420nmR1=38.4%R2= 41.6%
440nmR1=37.8%R2= 41.3%
460nmR1=37.3%R2= 40.9%
480nmR1=36.8%R2= 40.5%
500nmR1=36.2%R2= 40.2%
520nmR1=35.6%R2= 39.6%
540nmR1=34.9%R2= 39.0%
560nmR1=34.2%R2= 38.1%
580nmR1=33.5%R2= 37.3%
600nmR1=32.8%R2= 36.4%
620nmR1=32.1%R2= 35.6%
640nmR1=31.4%R2= 34.7%
660nmR1=30.6%R2= 34.0%
680nmR1=30.1%R2= 33.3%
700nmR1=29.6%R2= 32.6%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 41.9%.
R1 shown in black, R2 shown in red

Chemical Properties of ArgentobaumhaueriteHide

Formula:
Ag1.5Pb22As33.5S72
IMA Formula:
Ag1.5Pb22As33.5S72
Common Impurities:
Tl

Crystallography of ArgentobaumhaueriteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.9053(10) Å, b = 8.4680(10) Å, c = 44.4102(53) Å
α = 84.614(2)°, β = 86.469(2)°, γ = 90.082(8)°
Ratio:
a:b:c = 0.934 : 1 : 5.244
Unit Cell V:
1488.8 ų
Morphology:
As domains intergrown with baumhauerite.
Comment:
Data from Topa & Makovicky (2016).

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.22 Å(80)
3.68 Å(60)
3.01 Å(100)
2.95 Å(70)
2.75 Å(90)
2.73 Å(70)
2.28 Å(90)
Comments:
Similar to that of baumhauerite.

Type Occurrence of ArgentobaumhaueriteHide

Place of Conservation of Type Material:
Museum of Victoria, Melbourne, M30980, South Australian Museum, Adelaide, Australia, G15547; The Natural History Museum, London, England, 1926,1654; Natural History Museum, Basel, Switzerland, L7228.
Geological Setting of Type Material:
In sugary dolomite.
Associated Minerals at Type Locality:

Synonyms of ArgentobaumhaueriteHide

Other Language Names for ArgentobaumhaueriteHide

Relationship of Argentobaumhauerite to other SpeciesHide

Member of:
Other Members of this group:
ArgentodufrénoysiteAg3Pb26As35S80Tric. 1 : P1
ArgentoliveingiteAgxPb40-2xAs48+xS112Tric. 1 : P1
BarikaiteAg3Pb10(Sb8As11)S40Mon. 2/m : P21/b
BaumhaueritePb12As16S36Tric. 1 : P1
BernarlottiitePb6(As5Sb3)S18Tric. 1 : P1
BoscardiniteTlPb4(Sb7As2)S18Tric. 1 : P1
Carducciite(Ag2Sb2)Pb12(As,Sb)16S40Mon. 2/m : P21/b
DekatriasartoriteTlPb58As97S204Mon. 2/m : P21/b
DufrénoysitePb2As2S5Mon. 2 : P21
ÉcrinsiteAgTl3Pb4As11Sb9S36Tric. 1 : P1
EnneasartoriteTl6Pb32As70S140Mon. 2/m : P21/b
GuettarditePbAsSbS4Mon. 2/m : P21/b
HendekasartoriteTl2Pb48As82S172Mon. 2/m : P21/b
HeptasartoriteTl7Pb22As55S108Mon. 2/m : P21/b
HyršlitePb8As10Sb6S32Mon. 2 : P21
IncomsartoriteTl6Pb144As246S516Mon. 2/m
LiveingitePb9As13S28Mon.
ParapierrotiteTlSb5S8Mon. m
PhilrothiteTlAs3S5Mon. 2/m : P21/b
PierrotiteTl2(Sb,As)10S16Orth. mm2 : Pna21
PolloneiteAgPb46As26Sb23S120Mon. 2 : P21
RathiteAg2Pb12-xTlx/2As18+x/2S40Mon. 2/m : P21/b
SartoritePbAs2S4Mon. 2/m : P21/m
Twinnite Pb0.8Tl0.1Sb1.3As0.8S4Mon. 2/m
VeenitePb16Sb9-xAs7+xS40, x ~ 0-0.5Mon. 2 : P21

Common AssociatesHide

Associated Minerals Based on Photo Data:
6 photos of Argentobaumhauerite associated with HutchinsoniteTlPbAs5S9
6 photos of Argentobaumhauerite associated with OrpimentAs2S3
4 photos of Argentobaumhauerite associated with BaryteBaSO4

Related Minerals - Nickel-Strunz GroupingHide

2.HC.05bBaumhaueritePb12As16S36Tric. 1 : P1
2.HC.05eChabournéiteTl4Pb2(Sb,As)20S34Tric. 1 : P1
2.HC.05dDufrénoysitePb2As2S5Mon. 2 : P21
2.HC.05aGuettarditePbAsSbS4Mon. 2/m : P21/b
2.HC.05cLiveingitePb9As13S28Mon.
2.HC.05fParapierrotiteTlSb5S8Mon. m
2.HC.05fPierrotiteTl2(Sb,As)10S16Orth. mm2 : Pna21
2.HC.05dRathiteAg2Pb12-xTlx/2As18+x/2S40Mon. 2/m : P21/b
2.HC.05aSartoritePbAs2S4Mon. 2/m : P21/m
2.HC.05aTwinnite Pb0.8Tl0.1Sb1.3As0.8S4Mon. 2/m
2.HC.05dVeenitePb16Sb9-xAs7+xS40, x ~ 0-0.5Mon. 2 : P21
2.HC.05gMarumoitePb32As40S92Mon. 2 : P21
2.HC.05eDalnegroite(Tl4Pb2)(As12Sb8)S34Tric. 1 : P1
2.HC.10aFülöppitePb3Sb8S15Mon. 2/m : B2/b
2.HC.10cHeteromorphitePb7Sb8S19Mon. 2/m : B2/b
2.HC.10bPlagionitePb5Sb8S17Mon. 2/m
2.HC.10dRayitePb8(Ag,Tl)2Sb8S21Mon.
2.HC.10dSemseyitePb9Sb8S21Mon. 2/m : B2/b
2.HC.15BoulangeritePb5Sb4S11Mon. 2/m : P21/b
2.HC.15FalkmanitePb3Sb2S6Mon.
2.HC.20RobinsonitePb4Sb6S13Mon. 2/m : P21/m
2.HC.25MoëloitePb6Sb6S14(S3)Orth. 2 2 2 : P21 21 2
2.HC.30DadsonitePb23Sb25S60ClTric. 1 : P1
2.HC.35OwyheeiteAg3+xPb10-2xSb11+xS28, -0.13 < x > +0.20Mon. 2/m : P21/b
2.HC.35ZoubekiteAgPb4Sb4S10Orth.
2.HC.40ParasterryiteAg4Pb20Sb14As10S58Mon. 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

5.7.1SeligmannitePbCuAsS3Orth. mmm (2/m 2/m 2/m) : Pmmn
5.7.2BournonitePbCuSbS3Orth. mm2 : Pmn21
5.7.3MeneghinitePb13CuSb7S24Orth. mmm (2/m 2/m 2/m)
5.7.4GladitePbCuBi5S9Orth. mmm (2/m 2/m 2/m)
5.7.5LindströmitePb3Cu3Bi7S15Orth. mmm (2/m 2/m 2/m)
5.7.6KrupkaitePbCuBi3S6Orth.
5.7.7HammaritePb2Cu2Bi4S9Orth.
5.7.8FriedrichitePb5Cu5Bi7S18Orth. mm2
5.7.9AikinitePbCuBiS3Orth. mmm (2/m 2/m 2/m) : Pnma
5.7.10NuffielditeCu1.4Pb2.4Bi2.4Sb0.2S7Orth.
5.7.11JaskólskiiteCuxPb2+x(Sb,Bi)2-xS5 (x ~ 0.15)Orth. mmm (2/m 2/m 2/m)
5.7.12TintinaitePb22Cu4(Sb,Bi)30S69Orth. mmm (2/m 2/m 2/m) : Pnnm
5.7.13KobellitePb22Cu4(Bi,Sb)30S69Orth. mmm (2/m 2/m 2/m) : Pnnm
5.7.14ProuditeCuPb7.5Bi9.33(S,Se)22Mon. 2/m : B2/m
5.7.15NordströmiteCuPb3Bi7(Se4S10)Mon.
5.7.16WatkinsoniteCu2PbBi4(Se,S,Te)8Mon.
5.7.17PekoitePbCuBi11S18Orth.
5.7.18PetroviciteCu3HgPbBiSe5Orth.
5.7.19Eclarite(Cu,Fe)Pb9Bi12S28Orth. mmm (2/m 2/m 2/m) : Pnma
5.7.20MarriteAgPbAsS3Mon. 2/m : P21/b
5.7.22AndoriteAgPbSb3S6Orth. mmm (2/m 2/m 2/m)
5.7.23RamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24Mon. 2/m
5.7.24RoshchiniteAg19Pb10Sb51S96Orth.
5.7.25OurayiteAg3Pb4Bi5S13Orth.
5.7.26EskimoiteAg7Pb10Bi15S36Mon.
5.7.27FizélyiteAg5Pb14Sb21S48Mon. 2/m
5.7.28OwyheeiteAg3+xPb10-2xSb11+xS28, -0.13 < x > +0.20Mon. 2/m : P21/b
5.7.29FreieslebeniteAgPbSbS3Mon. 2/m : P21/b
5.7.30DiaphoriteAg3Pb2Sb3S8Mon. 2/m : P21/b
5.7.31SterryiteCu(Ag,Cu)3Pb19(Sb,As)22(As-As)S56Mon. 2/m
5.7.32VikingiteAg5Pb8Bi13S30Mon. 2/m : B2/m
5.7.33ZoubekiteAgPb4Sb4S10Orth.
5.7.34SchirmeritePbAgBi3S6 - Pb3Ag1.5Bi3.5S9Orth.
5.7.36GustaviteAgPbBi3S6Orth. mmm (2/m 2/m 2/m)
5.7.37KitaibeliteAg10PbBi30S51
5.7.38TreasuriteAg7Pb6Bi15S32Mon.
5.7.39BenjaminiteAg3Bi7S12Mon. 2/m : B2/m
5.7.40Lengenbachite Ag4Cu2Pb18As12S39Tric.
5.7.41BerryiteCu3Ag2Pb3Bi7S16Mon. 2/m : P21/m
5.7.42NeyiteAg2Cu6Pb25Bi26S68Mon.
5.7.43Larosite(Cu,Ag)21PbBiS13Orth.
5.7.44CupropavoniteCu0.9Ag0.5Pb0.6Bi2.5S5Mon. 2/m : B2/m
5.7.45PadĕraiteCu7[(Cu,Ag)0.33Pb1.33Bi11.33]S22Mon.
5.7.46RayitePb8(Ag,Tl)2Sb8S21Mon.
5.7.47RathiteAg2Pb12-xTlx/2As18+x/2S40Mon. 2/m : P21/b
5.7.48HatchiteAgTlPbAs2S5Tric. 1 : P1

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 ArgentobaumhaueriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Robinson, G. and Harris, D. (1987): A baumhauerite-like mineral from Quiruvilca, Peru. Mineralogical Record, 18, 199–201.
Laroussi, A., Moëlo, Y., Ohnenstetter, D., Ginderow, D. (1989): Argent et thallium dans les sulfosels de la série de la sartorite (Gisement de Lengenbach, vallée de Binn, Suisse). Comptes Rendus de l'Académie des Sciences, Série II, 308, 927-933. [as "Ag-rich baumhauerite"]
Pring, A., Birch, W. D., Sewell, D., Graeser, S., Edenharter, A. & Criddle, A. (1990): Baumhauerite-2a: A silver-bearing mineral with baumhauerite-like supercell from Lengenbach, Switzerland. American Mineralogist: 75, 915-922.
Pring, A. & Graeser, S. (1994): Polytypism in baumhauerite. American Mineralogist 79, 302-307.
Topa, D. & Makovicky, E. (2016): Argentobaumhauerite: name, chemistry, crystal structure, comparison with baumhauerite, and position in the Lengenbach mineralization sequence. Mineralogical Magazine, 80, 819-840.

Internet Links for ArgentobaumhaueriteHide

Localities for ArgentobaumhaueriteHide

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.
Peru
 
  • La Libertad
    • Santiago de Chuco Province
      • Quiruvilca District
Robinson, G. W., Harris, D. C. (1987): A baumhauerite-like mineral from Quiruvilca, Peru. Mineralogical Record 18, 199-201.; Crowley, J.A., Currier, R.H. & Szenics, T. (1997): Mines and Minerals of Peru. Mineralogical Record 28, 1-98.
Switzerland (TL)
 
  • Valais
    • Goms
      • Binn
        • Fäld (Imfeld; Im Feld; Feld)
Laroussi, A., Moëlo, Y., Ohnenstetter, D., Ginderow, D. (1989): Argent et thallium dans les sulfosels de la série de la sartorite (Gisement de Lengenbach, vallée de Binn, Suisse). Comptes Rendus de l'Académie des Sciences, Série II, 308, 927-933. [as "Ag-rich baumhauerite"]; Pring, A., Birch, W. D., Sewell, D., Graeser, S., Edenharter, A. & Criddle, A. (1990): Baumhauerite-2a: A silver-bearing mineral with baumhauerite-like supercell from Lengenbach, Switzerland. American Mineralogist: 75, 915-922 [as "baumhauerite-2a"]; Topa, D. & Makovicky, E. (2016): Argentobaumhauerite: name, chemistry, crystal structure, comparison with baumhauerite, and position in the Lengenbach mineralization sequence. Mineralogical Magazine, 80, 819-840; Raber, T. (2016): Argentobaumhauerit. Schweizer Strahler 50 (3), 20-29.
 
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