Paakkonenite Mineral Data (original) (raw)
General Paakkonenite Information
Chemical Formula:
Sb2AsS2
Composition:
Molecular Weight = 382.55 gm
Antimony 63.65 % Sb
Arsenic 19.58 % As
Sulfur 16.76 % S
______
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 
Paakkonenite Image
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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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 |
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Paakkonenite Crystallography
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 - PrismaticH-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),
Crystal Structure:
Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
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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
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
Optical Properties of Paakkonenite
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 | R 2 |  |
∑ 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 |  |
Calculated Relative Intensity Colors of Paakkonenite in Air
| RelativeIntensity | 0% | 30% | 60% | 90% | 100% | 120% | 150% | 180% | 210% | 240% |
|---|---|---|---|---|---|---|---|---|---|---|
| R1 | ||||||||||
| R2 |
Calculated Properties of Paakkonenite
Electron Density:
Bulk Density (Electron Density)=4.61 gm/cc
note: Specific Gravity of Paakkonenite =5.28 gm/cc.
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.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paakkonenite is Not Radioactive
Paakkonenite Classification
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
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
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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Ask about Paakkonenite here :
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Print or Cut-and-Paste your Paakkonenite Specimen Label here :
Paakkonenite
Sb2AsS2
Dana No: 02.11.05.01 Strunz No: 02.DB.05b
Locality:
Notes: