Mineralogy Database

Pillaite Mineral Data

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General Pillaite Information

Help on Chemical  Formula: Chemical Formula: Pb9Sb10S23ClO0.5
Help on Composition: Composition: Molecular Weight = 3,909.56 gm
   Copper     0.16 %  Cu
   Antimony  30.52 %  Sb
   Lead      49.29 %  Pb
   Sulfur    18.86 %  S
   Chlorine   0.96 %  Cl
   Oxygen     0.20 %  O
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Pb9.3Sb9.8Cu0.1S23Cl1.06O0.5
Help on Environment: Environment: Calcite veins that cut the Ba-Fe orebody and host rocks.
Help on IMA Status: IMA Status: Approved IMA 2001 (Dana # Added)
Help on Locality: Locality: Buca della Vena mine in the Apuan Alps of norhtern Tuscany, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Leopoldo Pilla (1805-1848), Italian Earth scientist.
Help on Synonym: Synonym: IMA1997-042
 

Pillaite Image

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  Pillaite

Comments: Scanning electron microscope image of acicular pillaite fibers. (Eur. J. Mineral, 13:606).
Location: Buca della Vena mine in the Apuan Alps, northern Tuscany, Italy. Scale: See Image.
© Eur. J. Mineral

Pillaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =11.9638:1:5.2795
Help on Cell Dimensions: Cell Dimensions: a = 49.65, b = 4.15, c = 21.91, Z = 4; beta = 99.76° V = 4,449.16 Den(Calc)= 5.84
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.48(1)(206), 2.956(0.47)(515,914), 3.458(0.4)(12.0.4),4.14(0.27)(205), 3.261(0.26)(406,12.0.2),
 

Physical Properties of Pillaite

Help on Cleavage: Cleavage: None
Help on Color: Color: Black.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Irregular - Very brittle fracture producing irregular fragments
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Metallic
Help on Streak: Streak: brownish black
 

Optical Properties of Pillaite

Help on Optical Data: Optical Data: NCalc= 1.02 - from Gladstone-Dale relationship (KC = 0.0035) where Ncalc=Dcalc*KC+1
Help on RL Anisotrophism: RL Anisotrophism: Weak.
Help on RL Bireflectance: RL Bireflectance: Weak.
Help on RL Color: RL Color: Rare red internal reflections.
Help on RL Pleochroism: RL Pleochroism: None.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Pillaite in Air
λ R  ∑ R(λ) 
 400 nm   37.00   
 410 nm   35.30 
 420 nm   37.70 
 430 nm   36.30 
 440 nm   36.00 
 450 nm   36.70 
 460 nm   35.90 
 470 nm   35.70 
 480 nm   35.40 
 490 nm   35.30 
 500 nm   35.40 
 510 nm   35.10 
 520 nm   34.70 
 530 nm   34.40 
 540 nm   34.90 
 550 nm   34.20 
 560 nm   34.20 
 570 nm   34.50 
 580 nm   34.20 
 590 nm   34.00 
 600 nm   32.70 
 610 nm   32.90 
 620 nm   32.80 
 630 nm   32.80 
 640 nm   32.40 
 650 nm   32.70 
 660 nm   31.90 
 670 nm   31.90 
 680 nm   31.50 
 690 nm   31.00 
 700 nm   30.50 
Standardized Intensity (100%) Reflection Spectra of Pillaite in Oil
λ R  ∑ R(λ) 
 400 nm   21.25   
 410 nm   20.30 
 420 nm   19.80 
 430 nm   20.00 
 440 nm   20.50 
 450 nm   20.40 
 460 nm   20.50 
 470 nm   20.10 
 480 nm   20.00 
 490 nm   19.75 
 500 nm   19.25 
 510 nm   19.45 
 520 nm   19.25 
 530 nm   18.95 
 540 nm   18.60 
 550 nm   18.75 
 560 nm   18.35 
 570 nm   18.15 
 580 nm   18.15 
 590 nm   17.60 
 600 nm   17.65 
 610 nm   17.50 
 620 nm   16.85 
 630 nm   16.90 
 640 nm   16.75 
 650 nm   16.45 
 660 nm   16.10 
 670 nm   16.15 
 680 nm   16.05 
 690 nm   15.55 
 700 nm   15.40 
Calculated Relative Intensity Colors of Pillaite in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 270%
R                      
Calculated Relative Intensity Colors of Pillaite in Oil
Relative
Intensity
   0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 510%
R                      
 

Calculated Properties of Pillaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.95 gm/cc
note: Specific Gravity of Pillaite =5.84 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.11
Boson Index = 0.89
Help on Photoelectric: Photoelectric: PEPillaite =1,000.79 barns/electron
U=PEPillaite x rElectron Density=4,949.24 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Pillaite is Not Radioactive
 

Pillaite Classification

Help on  Dana Class: Dana Class: 03.08.01.02 (03)Sulfides - Sulfosalts
  (03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.08.01)Zinkenite Group
 
03.08.01.01 Zinkenite Pb9Sb22S42 P 63 6
 
03.08.01.02 Pillaite! Pb9Sb10S23ClO0.5 C 2/m 2/m
 
03.08.01.03 Pellouxite! (Cu,Ag)Pb10Sb12S27(Cl,S)0.6O C 2/m 2/m
 
03.08.01.04 Tazieffite! Pb20Cd2(As,Bi)22S50Cl10 C 2/c 2/m
Help on  Strunz Class: Strunz Class: 02.JB.35c 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.J - Sulfosalts of PbS Archetype
  02.JB -Galena derivatives, with Pb
 
02.JB.35c Pillaite! Pb9Sb10S23ClO0.5 C 2/m 2/m
 

Other Pillaite Information

Help on References: References: NAME( AmMin, Vol 87, P 181) PHYS. PROP.(AmMin, Vol 87, P 181) OPTIC PROP.(EurJMin, v 13, p 605)
Help on See Also: See Also: Links to other databases for Pillaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Pillaite

Pb9Sb10S23ClO0.5
Dana No: 03.08.01.02 Strunz No: 02.JB.35c
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