Paakkonenite Mineral Data

Paakkonenite Mineral Data
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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.
Help on Name Pronunciation: Name Pronunciation: Paakkonenite + Pronunciation Say PAAKKONENITE
 

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
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Paakkonenite   Vaughanite   Stibarsen

Comments: B&W image of vaughanite (Va) aggregate surrounding a fibrous bundle of paakkonenite (Pfi) and associated with stibarsen (Star) and realgar (Re). Oil immersion. (CanMin, v53:369).
Location: Rare primary constituent of the Golden Giant orebody of the Hemlo gold deposit, Hemlo, Ontario, Canada. Scale: See Image.
© Canadian Mineralogist

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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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
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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 Diaphaneity: Diaphaneity: 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: Bulk Density (Electron Density)=4.61 gm/cc
note: Specific Gravity of Paakkonenite =5.28 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.001257314
Boson Index = 0.998742686
Help on Photoelectric: Photoelectric: PEPaakkonenite = 229.83 barns/electron
U=PEPaakkonenite x rElectron Density=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: 02.11.05.01 (02)Sulfides - Including Selenides and Tellurides
  (02.11)where Am Bn Xp, with (m+n):p=2:3
  (02.11.05)Dana Group
 
02.11.05.01 Paakkonenite Sb2AsS2 C 2/m 2/m
Help on Strunz Class: Strunz Class: 02.DB.05b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.D - Metal Sulfides, M:S = 3:4 and 2:3
  02.DB -M:S = 2:3 and similar
 
02.DB.05b Paakkonenite Sb2AsS2 C 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 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Paakkonenite

Sb2AsS2
Dana No: 02.11.05.01 Strunz No: 02.DB.05b
Locality:

 

Notes: