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Ardaite

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About ArdaiteHide

Formula:
Pb19Sb13S35Cl7
Colour:
Greenish gray or bluish green
Lustre:
Metallic
Hardness:
2½ - 3
Specific Gravity:
6.44 (Calculated)
Crystal System:
Monoclinic
Name:
For the Arda River, Bulgaria which passes through the type locality.
A rare example of lead chlorosulfoantimonite. Chemically related to dadsonite; also similar to 'UM1980-08-S:ClPbSb' (which has similar PXRD pattern), 'UM1980-09-S:ClPbSb', and 'UM1980-10-S:ClPbSb'.


Classification of ArdaiteHide

Approved
2.LB.30

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
B : With essential Pb
2.15.1.1

2 : SULFIDES
15 : Chlor-sulfides
6.5.8

6 : Sulphosalts - Sulphostannates, Sulphogermanates,Sulpharsenates, Sulphantimonates, Sulphovanadates and Sulphohalides
5 : Sulphohalides

Physical Properties of ArdaiteHide

Metallic
Transparency:
Opaque
Colour:
Greenish gray or bluish green
Hardness:
2½ - 3 on Mohs scale
Density:
6.44 g/cm3 (Calculated)

Optical Data of ArdaiteHide

Type:
Anisotropic
Anisotropism:
Distinct
Reflectivity:
440nmR1=31.3%R2= 33.2%
480nmR1=32.1%R2= 34.4%
520nmR1=32.3%R2= 35.1%
580nmR1=31.7%R2= 34.7%
620nmR1=31.1%R2= 33.9%
660nmR1=30.6%R2= 32.8%
700nmR1=30.3%R2= 31.8%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 35.1%.
R1 shown in black, R2 shown in red
Pleochroism:
Weak

Chemical Properties of ArdaiteHide

Formula:
Pb19Sb13S35Cl7
IMA Formula:
Pb17Sb15S35Cl9
Common Impurities:
Ag,Fe

Crystallography of ArdaiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 21.09 Å, b = 22.11 Å, c = 8.05 Å
β = 103.02°
Ratio:
a:b:c = 0.954 : 1 : 0.364
Unit Cell V:
3,657.21 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Aggregates of acicular crystals to 50 microns

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.24 (20)
3.90 (20)
3.43 (100)
3.13 (40)
2.83 (80)
2.36 (20)
1.90 (30)
Comments:
Synthetic.

Type Occurrence of ArdaiteHide

Synonyms of ArdaiteHide

Other Language Names for ArdaiteHide

German:Ardait
Spanish:Ardaita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Galena4 photos of Ardaite associated with Galena on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.LB.05MiharaiteCu4FePbBiS6Orth.
2.LB.30LaunayiteCuPb10(Sb,As)12S20Mon.
2.LB.30MadocitePb19(Sb,As)16S43Orth.
2.LB.30PlayfairitePb16(Sb,As)19S44ClMon.
2.LB.30SorbyiteCuPb9(Sb,As)11S26Mon. 2/m : B2/m
2.LB.30SterryiteCu(Ag,Cu)3Pb19(Sb,As)22(As-As)S56Mon. 2/m
2.LB.35Larosite(Cu,Ag)21PbBiS13Orth.
2.LB.40PetroviciteCu3HgPbBiSe5Orth.
2.LB.40MazzettiiteAg3HgPbSbTe5Orth.
2.LB.45CreraritePt2-x(Bi,Pb)11(S,Se)11Tric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

6.5.1CorderoiteHg2+3S2Cl2Iso. m3 (2/m 3)
6.5.2ArzakiteHg2+3S2(Br,Cl)2Mon.
6.5.3LavrentieviteHg2+3S2(Cl,Br)2Mon.
6.5.4GrechishcheviteHg2+3S2(Br,Cl,I)2Tet.
6.5.5RadtkeiteHg2+3S2IClMon. 2/m : B2/m
6.5.6CapgaronniteAgHgClSOrth.
6.5.7PerrouditeHg5Ag4S5(I,Br)2Cl2Orth. 2 2 2 : P21 21 2
6.5.9DadsonitePb23Sb25S60ClTric. 1 : P1
6.5.10RadhakrishnaitePbTe3(Cl,S)2Tet.
6.5.11DjerfisheriteK6(Fe,Cu,Ni)25S26ClIso. m3m (4/m 3 2/m) : Pm3m
6.5.12ThalfenisiteTl6(Fe,Ni,Cu)25S26Cl

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 ArdaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Breskovska V.V., Mozgova, N.N., Bortnikov, N.S., Gorshkov, A.I., Tzepin, A.I. (1982) Ardaite, a new lead-antimony chlorsulphosalt. Mineralogical Magazine: 46: 357-361.
Dunn, P.J., Fleischer, M. (1983) New mineral names. American Mineralogist: 68: 642-645..
Burke, E.A.J., Kieft, C., Zakrzewski, M.A. (1981) The second occurrence of ardaite: Gruvasen, Bergslagen, Sweden. The Canadian Mineralogist: 19: 419–422.
Moëlo, Y., Makovicky, E., Mozgova, N.N., Jambor, J.L., Cook, N., Pring, A., Paar, W., Nickel, E.H., Graeser, S., Karup-Møller, S., Balic-Zunic, T., Mumme, W.G., Vurro, F., Topa, D., Bindi, L., Bente, K., Shimizu, M. (2008) Sulfosalt systematics: a review. Report of the sulfosalt sub-committee of the IMA Commission on Ore Mineralogy. European Journal of Mineralogy: 20: 7-46.

Internet Links for ArdaiteHide

Localities for ArdaiteHide

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.
Bulgaria (TL)
 
  • Haskovo Oblast (Khaskovo Oblast)
Mineralogical Magazine(1982) 46, 357-361
Sweden
 
  • Värmland
    • Filipstad
      • Persberg district
        • Gruvåsen mines
Burke, E.A.J., Kieft, C. & Zakrzewski, M.A. (1981): The second occurrence of ardaite: Gruvåsen, Bergslagen, Sweden. Canadian Mineralogist. 19, 419-422
Mineral and/or Locality  
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