Paakkonenite Mineral Data + Say PAAKKONENITE


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General Paakkonenite Information

Help on Chemical  Formula: Chemical Formula: Sb2AsS2
Help on Composition: Composition: Molecular Weight = 382.55 gm
   Antimony  63.65 %  Sb
   Arsenic   19.58 %  As
   Sulfur    16.76 %  S
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Sb2AsS2
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: Kalliosalo deposit, Seinajoki region, Finland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Viekko Paakkonen, who studied the ore deposits of the region.
 

Paakkonenite Image

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Paakkonenite   Kermesite

Comments: Much of the matrix is the gray metallic paakkonenite with red crystals of kermesite and minute yellow crystals of valentinite.
Location: Cai' ao mine, Danfong Co., Shaanxi Prov., China. Scale: 3x2x2cm.
© Tom Loomis / Dakota Matrix

Paakkonenite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.7153:1:3.1548
Help on Cell Dimensions: Cell Dimensions: a = 10.75, b = 3.959, c = 12.49, Z = 4; beta = 115.25° V = 480.78 Den(Calc)= 5.28
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.87(1), 2.68(0.6), 3.13(0.4),
Click Here for Large Paakkonenite Structure Window Crystal Structure:

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Help on Above


Bonazzi P , Borrini D , Mazzi F , Olmi F , American Mineralogist , 80 (1995) p.1054-1058, Crystal structure and twinning of Sb2AsS2, the synthetic analogue of, paakkonenite

 

Physical Properties of Paakkonenite

Help on Color: Color: Gray.
Help on Density: Density: 5.21
Help on Diaphaniety: Diaphaniety: Opaque
Help on Habit: Habit: Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Metallic
Help on Streak: Streak: brownish gray
 

Optical Properties of Paakkonenite

Help on RL Anisotrophism: RL Anisotrophism: Strong.
Help on RL Color: RL Color: Light pale gray with bright red internam reflections.
Help on RL Pleochroism: RL Pleochroism: Weak.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Paakkonenite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 440 nm   40.90   52.10 
   
 460 nm   39.80   51.70 
 480 nm   38.70   50.80 
 500 nm   38.00   49.80 
 520 nm   37.50   48.70 
 540 nm   37.20   47.80 
 560 nm   36.90   47.00 
 580 nm   36.70   46.30 
 600 nm   36.50   45.80 
 620 nm   36.50   45.50 
 640 nm   36.40   45.30 
 660 nm   36.20   45.10 
 680 nm   36.20   45.40 
 700 nm   36.00   45.30 
Calculated Relative Intensity Colors of Paakkonenite in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240%
R1                    
R2                    
 

Calculated Properties of Paakkonenite

Help on Electron Density: Electron Density:

relectron=4.61 gm/cc
note: rPaakkonenite =5.28 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00125
Boson Index = 0.99875
Help on Photoelectric: Photoelectric:

PEPaakkonenite = 229.83 barns/electron
U=PEPaakkonenite x relectron=1,059.48 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Paakkonenite is Not Radioactive

 

Paakkonenite Classification

Help on  Dana Class: Dana Class: 2.11.5.1 (2)Sulfides - Including Selenides and Tellurides
  (2.11)where Am Bn Xp, with (m+n):p=2:3
  (2.11.5)Dana Group
 
2.11.5.1 Paakkonenite Sb2AsS2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: II/D.08-10 II - Sulfides and sulphosalts
  II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold
  II/D.08 - Stibnite - Bismuthinite series
 
II/D.08-10 Paakkonenite Sb2AsS2 C 2/m 2/m
 
II/D.08-20 Stibnite Sb2S3 Pbnm 2/m 2/m 2/m
 
II/D.08-25 Antimonselite Sb2Se3 Pbnm 2/m 2/m 2/m
 
II/D.08-30 Metastibnite Sb2S3 None
 
II/D.08-40 Bismuthinite Bi2S3 Pbnm 2/m 2/m 2/m
 
II/D.08-50 Guanajuatite Bi2Se3 Pbnm 2/m 2/m 2/m
 
II/D.08-60 Ottemannite Sn2S3 Pnam 2/m 2/m 2/m
 

Other Paakkonenite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Paakkonenite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Paakkonenite

Sb2AsS2
Dana No: 2.11.5.1 Strunz No: II/D.08-10
Locality:

 

Notes:

 

 
   
 
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