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Jonassonite Mineral Data
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General Jonassonite Information
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 Chemical Formula: |
Au(Bi,Pb)5S4 |
| Composition: |
Molecular Weight = 1,344.86 gm |
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Cadmium 0.08 % Cd |
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Silver 0.08 % Ag |
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Bismuth 68.68 % Bi |
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Antimony 0.09 % Sb |
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Lead 6.01 % Pb |
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Gold 14.94 % Au |
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Selenium 0.41 % Se |
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Sulfur 9.70 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Au1.02Ag0.01Bi4.42Pb0.39Cd0.01Sb0.01S4.07Se0.07 |
| Environment: |
Detected in old mining dumps of the abandoned Nagyb�rzs�ny deposit. |
| IMA Status: |
Approved IMA 2004 (Dana # Added) |
| Locality: |
Nagyb�rzs�ny ore deposit, B�rzs�ny Mountains, Hungary Link to MinDat.org Location Data. |
| Name Origin: |
Named for Ian Roy Jonasson, an economic geologist at the Geological Survey of Canada, Ottawa, |
| Synonym: |
IMA2004-031 |
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Jonassonite Image |
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Images:
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Jonassonite
Comments: PPL (a) and XPL (b) of jonassonite (Jo) with inclusions of native bismuth (Bi) is intergrown with native bismuth (Bi) and bismuthinite (Bmt). (b) demonstrates the characteristic orange-red color of jonassonite. (CanMin, v44:1127).
Location: Nagybörzsöny ore deposit, Börzsöny Mountains, Hungary.
Scale: Scale bar 100 µm.
© Canadian Mineralogist |
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Jonassonite Crystallography
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| Axial Ratios: |
a:b:c =4.4617:1:3.4016 |
| Cell Dimensions: |
a = 18.329, b = 4.108, c = 13.974, Z = 4; beta = 100.9° V = 1,033.20 Den(Calc)= 8.65 |
| Crystal System: |
Monoclinic Space Group: F2/m, F2 or Fm |
| X Ray Diffraction: |
By Intensity(I/Io): 2.959(1), 2.086(0.5), 2.101(0.5),3.382(0.4), 9.002(0.4), 3.46(0.3), 6.876(0.3), 6.046(0.2), |
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Physical Properties of Jonassonite
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| Cleavage: |
None |
| Color: |
Tin white. |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
| Hardness: |
2.5-3 - Finger Nail-Calcite |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Jonassonite
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| RL Anisotrophism: |
Distinct in shades of green and purple. |
| RL Bireflectance: |
Weak. |
| RL Color: |
Pale gray. |
| RL Pleochroism: |
Weak pale slightly bluish gray to pale gray. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Jonassonite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
48.80 |
49.50 |
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| 420 nm |
49.10 |
50.10 |
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| 440 nm |
49.10 |
50.20 |
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| 460 nm |
48.80 |
50.10 |
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| 480 nm |
48.40 |
50.00 |
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| 500 nm |
47.60 |
49.70 |
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| 520 nm |
47.10 |
49.40 |
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| 540 nm |
46.70 |
49.20 |
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| 560 nm |
46.50 |
49.00 |
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| 580 nm |
46.50 |
49.90 |
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| 600 nm |
46.70 |
48.80 |
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| 620 nm |
47.20 |
48.80 |
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| 640 nm |
47.70 |
48.40 |
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| 660 nm |
48.20 |
48.90 |
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| 680 nm |
45.40 |
49.00 |
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| 700 nm |
45.60 |
49.00 |
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Standardized Intensity (100%) Reflection Spectra of Jonassonite in Oil
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
35.80 |
36.60 |
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| 420 nm |
35.80 |
36.80 |
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| 440 nm |
35.80 |
36.80 |
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| 460 nm |
35.30 |
36.80 |
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| 480 nm |
34.70 |
36.60 |
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| 500 nm |
33.70 |
36.30 |
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| 520 nm |
33.10 |
35.90 |
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| 540 nm |
32.70 |
35.70 |
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| 560 nm |
32.60 |
35.50 |
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| 580 nm |
32.70 |
35.30 |
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| 600 nm |
33.10 |
35.10 |
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| 620 nm |
33.50 |
35.00 |
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| 640 nm |
34.00 |
35.00 |
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| 660 nm |
34.40 |
35.00 |
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| 680 nm |
34.60 |
35.10 |
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| 700 nm |
34.80 |
35.10 |
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Calculated Relative Intensity Colors of Jonassonite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
190% |
| R1 |
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| R2 |
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Calculated Relative Intensity Colors of Jonassonite in Oil
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
240% |
270% |
| R1 |
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| R2 |
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Calculated Properties of Jonassonite
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| Electron Density: |
Bulk Density (Electron Density)=7.05 gm/cc
note: Specific Gravity of Jonassonite =8.65 gm/cc.
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| Fermion Index: |
Fermion Index = 0.01
Boson Index = 0.99 |
| Photoelectric: |
PEJonassonite =1,719.41 barns/electron
U=PEJonassonite x rElectron Density=12129.08 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Jonassonite is Not Radioactive |
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Jonassonite Classification
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| Dana Class: |
02.05.11.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.05)where Am Bn Xp, with (m+n):p=3:2 |
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(02.05.11)Dana Group |
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02.05.11.01 Jonassonite! Au(Bi,Pb)5S4 F2/m, F2 or Fm Mono |
| Strunz Class: |
02.LA.65 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.L - Unclassified Sulfosalts |
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02.LA -Without essential Pb |
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02.LA.65 Jonassonite! Au(Bi,Pb)5S4 F2/m, F2 or Fm Mono |
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Other Jonassonite Information
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| References: |
NAME( CanMin, v44:1127) PHYS. PROP.(CanMin, v44:1127) OPTIC PROP.(CanMin, v44:1127) |
| See Also: |
Links to other databases for Jonassonite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Jonassonite Specimen Label here :
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Jonassonite
Au(Bi,Pb)5S4
Dana No: 02.05.11.01 Strunz No: 02.LA.65
Locality:
Notes:
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