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Sakuraiite Mineral Data
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General Sakuraiite Information
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 Chemical Formula: |
(Cu,Zn,Fe,In,Sn)4S4 |
| Composition: |
Molecular Weight = 424.41 gm |
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Zinc 13.87 % Zn |
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Indium 24.35 % In |
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Iron 5.26 % Fe |
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Copper 20.96 % Cu |
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Silver 2.54 % Ag |
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Tin 2.80 % Sn |
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Sulfur 30.22 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Cu1.4Zn0.9Fe2+0.4Ag0.1In0.9Sn0.1S4 |
| Environment: |
Exsolved sulfide in stannite in a banded hydrothermal vein. |
| IMA Status: |
Approved IMA 1967 |
| Locality: |
Ikuno mine Hyogo Prefecture, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Kin-Ichi Sakurai (1912-1993), a Japanese amateur mineralogist. |
| Name Pronunciation: |
Sakuraiite + Pronunciation  |
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Sakuraiite Image |
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Images:
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Sakuraiite
Comments: Dark gray sakuraiite ore.
Location: Ikuno Mine, Kanagase, Asago-Gun-Hyogo, Japan.
Scale: Specimen Size 2 cm.
© Thomas Witzke |
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Sakuraiite Crystallography
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| Cell Dimensions: |
a = 5.4563, Z = 1; V = 162.44 Den(Calc)= 4.34 |
| Crystal System: |
Isometric Space Group: P 432, P 43m, or P m3m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.15(1), 1.927(0.4), 1.65(0.2),2.73(0.1), 2.44(0.06), 3.85(0.06), 5.47(0.06), |
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Physical Properties of Sakuraiite
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| Cleavage: |
None |
| Color: |
Greenish gray, Greenish steel gray. |
| Diaphaneity: |
Opaque |
| Habit: |
Exsolution Inclusions - Formed by the exsolution of a separate mineral from the parent mineral caused by a temperature drop. |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
4 - Fluorite |
| Luster: |
Metallic |
| Streak: |
lead olive gray |
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Optical Properties of Sakuraiite
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| RL Anisotrophism: |
Nearly isotropic. |
| RL Color: |
Purplish olive-gray with a red tint. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Sakuraiite in Air
| λ |
R |
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∑ R(λ) |
| 400 nm |
22.50 |
 |
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| 420 nm |
22.50 |
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| 440 nm |
22.50 |
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| 460 nm |
22.60 |
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| 480 nm |
22.60 |
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| 500 nm |
22.60 |
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| 520 nm |
22.60 |
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| 540 nm |
22.70 |
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| 560 nm |
22.60 |
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| 580 nm |
22.50 |
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| 600 nm |
22.50 |
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| 620 nm |
22.60 |
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| 640 nm |
22.60 |
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| 660 nm |
22.60 |
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| 680 nm |
22.60 |
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| 700 nm |
22.40 |
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Calculated Relative Intensity Colors of Sakuraiite in Air
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
320% |
360% |
390% |
| R |
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Calculated Properties of Sakuraiite
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| Electron Density: |
Bulk Density (Electron Density)=4.00 gm/cc
note: Specific Gravity of Sakuraiite =4.34 gm/cc.
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| Fermion Index: |
Fermion Index = 0.01
Boson Index = 0.99 |
| Photoelectric: |
PESakuraiite = 103.17 barns/electron
U=PESakuraiite x rElectron Density= 413.13 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sakuraiite is Not Radioactive |
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Sakuraiite Classification
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| Dana Class: |
02.09.02.05 (02)Sulfides - Including Selenides and Tellurides |
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(02.09)where Am Bn Xp, with (m+n):p=1:1 |
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(02.09.02)Stannite Group (Tetragonal: I-42m) A2BCS type |
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02.09.02.01 Stannite Cu2FeSnS4 I 42m 4 2m |
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02.09.02.02 Cernyite Cu2CdSnS4 I 42m 4 2m |
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02.09.02.03 Briartite Cu2(Zn,Fe)GeS4 I 42m 4 2m |
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02.09.02.04 Kuramite Cu3SnS4 I 42m 4 2m |
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02.09.02.05 Sakuraiite (Cu,Zn,Fe,In,Sn)4S4 P 432, P 43m, or P m3m Cubic |
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02.09.02.06 Hocartite Ag2FeSnS4 I 42m 4 2m |
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02.09.02.07 Pirquitasite Ag2ZnSnS4 I 42m 4 2m |
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02.09.02.08 Velikite Cu2HgSnS4 I 42m 4 2m |
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02.09.02.09 Kesterite Cu2(Zn,Fe)SnS4 I 4 4 |
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02.09.02.10 Ferrokesterite Cu2(Fe,Zn)SnS4 I 42m 4 2m |
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02.09.02.11 Barquillite! Cu2CdGeS4 I 42m 4 2m |
| Strunz Class: |
02.CB.05b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.C - Metal Sulfides, M:S = 1:1 (and similar) |
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02.CB -With Zn, Fe, Cu, Ag, Au, etc |
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02.CB.05b Sakuraiite (Cu,Zn,Fe,In,Sn)4S4 P 432, P 43m, or P m3m Cubic |
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Other Sakuraiite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(AntBidBlaNic1) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Sakuraiite :
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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Sakuraiite
(Cu,Zn,Fe,In,Sn)4S4
Dana No: 02.09.02.05 Strunz No: 02.CB.05b
Locality:
Notes:
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