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Paakkonenite Mineral Data
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General Paakkonenite Information
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 Chemical Formula: |
Sb2AsS2 |
| Composition: |
Molecular Weight = 382.55 gm |
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Antimony 63.65 % Sb |
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Arsenic 19.58 % As |
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Sulfur 16.76 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Sb2AsS2 |
| IMA Status: |
Approved IMA 1981 |
| Locality: |
Kalliosalo deposit, Seinajoki region, Finland. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Viekko Paakkonen, who studied the ore deposits of the region. |
| Name Pronunciation: |
Paakkonenite + Pronunciation  |
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Paakkonenite Image |
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Images:
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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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Images:
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Vaughanite Paakkonenite 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 |
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Paakkonenite Crystallography
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| Axial Ratios: |
a:b:c =2.7153:1:3.1548 |
| Cell Dimensions: |
a = 10.75, b = 3.959, c = 12.49, Z = 4; beta = 115.25° V = 480.78 Den(Calc)= 5.28 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m |
| X Ray Diffraction: |
By Intensity(I/Io): 2.87(1), 2.68(0.6), 3.13(0.4), |
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Physical Properties of Paakkonenite
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| Color: |
Gray. |
| Density: |
5.21 |
| Diaphaneity: |
Opaque |
| Habit: |
Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks. |
| Hardness: |
2 - Gypsum |
| Luster: |
Metallic |
| Streak: |
brownish gray |
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Optical Properties of Paakkonenite
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| RL Anisotrophism: |
Strong. |
| RL Color: |
Light pale gray with bright red internam reflections. |
| RL Pleochroism: |
Weak. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Paakkonenite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 440 nm |
40.90 |
52.10 |
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| 460 nm |
39.80 |
51.70 |
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| 480 nm |
38.70 |
50.80 |
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| 500 nm |
38.00 |
49.80 |
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| 520 nm |
37.50 |
48.70 |
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| 540 nm |
37.20 |
47.80 |
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| 560 nm |
36.90 |
47.00 |
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| 580 nm |
36.70 |
46.30 |
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| 600 nm |
36.50 |
45.80 |
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| 620 nm |
36.50 |
45.50 |
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| 640 nm |
36.40 |
45.30 |
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| 660 nm |
36.20 |
45.10 |
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| 680 nm |
36.20 |
45.40 |
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| 700 nm |
36.00 |
45.30 |
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Calculated Relative Intensity Colors of Paakkonenite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
240% |
| R1 |
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| R2 |
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Calculated Properties of Paakkonenite
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| Electron Density: |
Bulk Density (Electron Density)=4.61 gm/cc
note: Specific Gravity of Paakkonenite =5.28 gm/cc.
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| Fermion Index: |
Fermion Index = 0.001257314
Boson Index = 0.998742686 |
| Photoelectric: |
PEPaakkonenite = 229.83 barns/electron
U=PEPaakkonenite x rElectron Density=1,059.48 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paakkonenite is Not Radioactive |
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Paakkonenite Classification
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| Dana Class: |
02.11.05.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.11)where Am Bn Xp, with (m+n):p=2:3 |
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(02.11.05)Dana Group |
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02.11.05.01 Paakkonenite Sb2AsS2 C 2/m 2/m |
| Strunz Class: |
02.DB.05b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.D - Metal Sulfides, M:S = 3:4 and 2:3 |
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02.DB -M:S = 2:3 and similar |
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02.DB.05b Paakkonenite Sb2AsS2 C 2/m 2/m |
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Other Paakkonenite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| 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 - 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
15 - WWW-MINCRYST
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Paakkonenite
Sb2AsS2
Dana No: 02.11.05.01 Strunz No: 02.DB.05b
Locality:
Notes:
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