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Ikunolite Mineral Data
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General Ikunolite Information
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 Chemical Formula: |
Bi4(S,Se)3 |
| Composition: |
Molecular Weight = 967.29 gm |
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Bismuth 86.42 % Bi |
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Selenium 6.12 % Se |
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Sulfur 7.46 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Bi4S2.25Se0.75 |
| Environment: |
In a quartz vein. |
| IMA Status: |
Approved IMA 1959 |
| Locality: |
At the Ikuno and Akenobe mines, Hyogo Prefecture, and the Ashio mine, Tochigi Prefecture, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
For the Ikuno mine, Japan, in which it was first found. |
| Name Pronunciation: |
Ikunolite + Pronunciation  |
| Synonym: |
ICSD 25795 |
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PDF 25-1175 |
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Ikunolite Image |
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Images:
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Ikunolite
Comments: B&W polished section showing kunolite( ik) in association with bismuth bi) and bismuthinite (bt). (AmMin, v47:1431).
Location: Bismuth-molybdenite pipes at Kingsgate in the New England district of New South Wales, Australia.
Scale: 150 X.
© American Mineralogist |
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Images:
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Ikunolite Crystallography
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| Axial Ratios: |
a:c = 1:9.44337 |
| Cell Dimensions: |
a = 4.15, c = 39.19, Z = 3; V = 584.52 Den(Calc)= 8.24 |
| Crystal System: |
Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.022(1), 4.34(0.5), 2.205(0.3), |
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Physical Properties of Ikunolite
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| Cleavage: |
{???} Perfect |
| Color: |
Lead gray. |
| Density: |
7.8 |
| Diaphaneity: |
Opaque |
| Hardness: |
2 - Gypsum |
| Luster: |
Metallic |
| Streak: |
dark gray |
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Optical Properties of Ikunolite
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| Optical Data: |
NCalc= 2.21 - from Gladstone-Dale relationship (KC = 0.1474) where Ncalc=Dcalc*KC+1
NCalc= 2.15 - from Gladstone-Dale relationship (KC = 0.1474) where Ncalc=Dmeas*KC+1
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| RL Anisotrophism: |
Nearly isotropic in basal section, moderately anisotropic, pale gray to gray, in diagonal section. |
| RL Color: |
White with faint creamy tint. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Ikunolite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
46.60 |
48.80 |
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| 420 nm |
46.30 |
49.00 |
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| 440 nm |
46.00 |
49.20 |
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| 460 nm |
45.70 |
49.00 |
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| 480 nm |
45.50 |
48.70 |
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| 500 nm |
45.30 |
48.60 |
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| 520 nm |
45.20 |
48.60 |
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| 540 nm |
45.00 |
48.80 |
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| 560 nm |
45.00 |
48.90 |
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| 580 nm |
44.90 |
49.00 |
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| 600 nm |
44.90 |
49.00 |
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| 620 nm |
44.80 |
48.90 |
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| 640 nm |
44.60 |
48.70 |
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| 660 nm |
44.20 |
48.50 |
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| 680 nm |
43.80 |
48.10 |
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| 700 nm |
43.40 |
47.60 |
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Calculated Relative Intensity Colors of Ikunolite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
200% |
| R1 |
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| R2 |
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Calculated Properties of Ikunolite
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| Electron Density: |
Bulk Density (Electron Density)=6.70 gm/cc
note: Specific Gravity of Ikunolite =8.24 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0052131927
Boson Index = 0.9947868073 |
| Photoelectric: |
PEIkunolite =1,715.06 barns/electron
U=PEIkunolite x rElectron Density=11498.07 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ikunolite is Not Radioactive |
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Ikunolite Classification
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| Dana Class: |
02.06.02.03 (02)Sulfides - Including Selenides and Tellurides |
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(02.06)where Am Bn Xp, with (m+n):p=4:3 |
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(02.06.02)Joseite Group (Trigonal: R-3m) |
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02.06.02.01 Joseite Bi4(S,Te)3 R 3m 3 2/m |
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02.06.02.02 Joseite-B Bi4(S,Te)3 R 3m 3 2/m |
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02.06.02.03 Ikunolite Bi4(S,Se)3 R 3m 3 2/m |
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02.06.02.04 Laitakarite Bi4(Se,S)3 R 3m 3 2/m |
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02.06.02.05 Pilsenite Bi4Te3 R 3m 3 2/m |
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02.06.02.06 Poubaite PbBi2Se2(Te,S)2 R 3m 3 2/m |
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02.06.02.07 Rucklidgeite (Bi,Pb)3Te4 R 3m 3 2/m |
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02.06.02.08 Babkinite! Pb2Bi2(S,Se)3 P 3,P 3m Trig |
| Strunz Class: |
02.DC.05d 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.DC -Variable M:S |
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02.DC.05d Laitakarite Bi4(Se,S)3 R 3m 3 2/m |
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02.DC.05d Ikunolite Bi4(S,Se)3 R 3m 3 2/m |
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02.DC.05d Joseite Bi4(S,Te)3 R 3m 3 2/m |
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02.DC.05d Joseite-B Bi4(S,Te)3 R 3m 3 2/m |
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02.DC.05d Pilsenite Bi4Te3 R 3m 3 2/m |
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Other Ikunolite 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 Ikunolite :
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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Print or Cut-and-Paste your Ikunolite Specimen Label here :
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Ikunolite
Bi4(S,Se)3
Dana No: 02.06.02.03 Strunz No: 02.DC.05d
Locality:
Notes:
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