Mineralogy Database

Ardaite Mineral Data

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General Ardaite Information

Help on Chemical  Formula: Chemical Formula: Pb19Sb13S35Cl7
Help on Composition: Composition: Molecular Weight = 6,890.03 gm
   Antimony  22.97 %  Sb
   Lead      57.14 %  Pb
   Sulfur    16.29 %  S
   Chlorine   3.60 %  Cl
            100.00 % 
Help on Empirical Formula: Empirical Formula: Pb19Sb13S35Cl7
Help on Environment: Environment: In polymetallic ore deposits.
Help on IMA Status: IMA Status: Approved IMA 1980
Help on Locality: Locality: Madjarovo, Arda River, Bulgaria. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Ardaite Say ARDAITE

Ardaite Image

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Comments: B&W image of 1. Ardaite; 2. Chlorine-containing robinsonite; 3. Nadorite; 4. Anglesite; 5. Galena.
Location: Madjarovo polymetallic ore deposit, Bulgaria. (MinMag, v 46:340). Scale: Magnification 120 x.
© Mineralogical Magazine

Ardaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0464:1:0.3813
Help on Cell Dimensions: Cell Dimensions: a = 22.09, b = 21.11, c = 8.05, Z = 2; beta = 103.02° V = 3,657.37 Den(Calc)= 6.26
Help on Crystal System: Crystal System: Monoclinic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2(1), 3.38(1), 3.4(1),

Physical Properties of Ardaite

Help on Color: Color: Green gray.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Metallic

Optical Properties of Ardaite

Help on RL Anisotrophism: RL Anisotrophism: Distinct.
Help on RL Pleochroism: RL Pleochroism: Distinct.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Ardaite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 440 nm   31.30   33.20 
 480 nm   32.10   34.40 
 520 nm   32.30   35.10 
 580 nm   31.70   34.70 
 620 nm   31.10   33.90 
 660 nm   30.60   32.80 
 700 nm   30.30   31.80 
Calculated Relative Intensity Colors of Ardaite in Air
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 270% 290%

Calculated Properties of Ardaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.27 gm/cc
note: Specific Gravity of Ardaite =6.26 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.12
Boson Index = 0.88
Help on Photoelectric: Photoelectric: PEArdaite =1,123.48 barns/electron
U=PEArdaite x rElectron Density=5,920.32 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ardaite is Not Radioactive

Ardaite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.15.01)Dana Group Ardaite Pb19Sb13S35Cl7 Unk Mono
Help on  Strunz Class: Strunz Class: 02.LB.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.L - Unclassified Sulfosalts
  02.LB -With essential Pb
02.LB.20 Ardaite Pb19Sb13S35Cl7 Unk Mono

Other Ardaite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Ardaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 02.LB.20





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