Mineralogy Database

Sakuraiite Mineral Data

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General Sakuraiite Information

Help on Chemical  Formula: Chemical Formula: (Cu,Zn,Fe,In,Sn)4S4
Help on Composition: Composition: Molecular Weight = 424.41 gm
   Zinc    13.87 %  Zn
   Indium  24.35 %  In
   Iron     5.26 %  Fe
   Copper  20.96 %  Cu
   Silver   2.54 %  Ag
   Tin      2.80 %  Sn
   Sulfur  30.22 %  S
          100.00 % 
Help on Empirical Formula: Empirical Formula: Cu1.4Zn0.9Fe2+0.4Ag0.1In0.9Sn0.1S4
Help on Environment: Environment: Exsolved sulfide in stannite in a banded hydrothermal vein.
Help on IMA Status: IMA Status: Approved IMA 1967
Help on Locality: Locality: Ikuno mine Hyogo Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Kin-Ichi Sakurai (1912-1993), a Japanese amateur mineralogist.
Help on Name Pronunciation: Name Pronunciation: Sakuraiite + Pronunciation Say SAKURAIITE

Sakuraiite Image

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Comments: Dark gray sakuraiite ore.
Location: Ikuno Mine, Kanagase, Asago-Gun-Hyogo, Japan. Scale: Specimen Size 2 cm.
© Thomas Witzke

Sakuraiite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 5.4563, Z = 1; V = 162.44 Den(Calc)= 4.34
Help on Crystal System: Crystal System: Isometric Space Group: P 432, P 43m, or P m3m
Help on X Ray Diffraction: 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),

Physical Properties of Sakuraiite

Help on Cleavage: Cleavage: None
Help on Color: Color: Greenish gray, Greenish steel gray.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Exsolution Inclusions - Formed by the exsolution of a separate mineral from the parent mineral caused by a temperature drop.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Metallic
Help on Streak: Streak: lead olive gray

Optical Properties of Sakuraiite

Help on RL Anisotrophism: RL Anisotrophism: Nearly isotropic.
Help on RL Color: RL Color: Purplish olive-gray with a red tint.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Sakuraiite in Air
λ R  ∑ R(λ) 
 400 nm   22.50   
 420 nm   22.50 
 440 nm   22.50 
 460 nm   22.60 
 480 nm   22.60 
 500 nm   22.60 
 520 nm   22.60 
 540 nm   22.70 
 560 nm   22.60 
 580 nm   22.50 
 600 nm   22.50 
 620 nm   22.60 
 640 nm   22.60 
 660 nm   22.60 
 680 nm   22.60 
 700 nm   22.40 
Calculated Relative Intensity Colors of Sakuraiite in Air
   0%   40%   80% 100% 120% 160% 200% 240% 280% 320% 360% 390%

Calculated Properties of Sakuraiite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.00 gm/cc
note: Specific Gravity of Sakuraiite =4.34 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PESakuraiite = 103.17 barns/electron
U=PESakuraiite x rElectron Density= 413.13 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sakuraiite is Not Radioactive

Sakuraiite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.09)where Am Bn Xp, with (m+n):p=1:1
  (02.09.02)Stannite Group (Tetragonal: I-42m) A2BCS type Stannite Cu2FeSnS4 I 42m 4 2m Cernyite Cu2CdSnS4 I 42m 4 2m Briartite Cu2(Zn,Fe)GeS4 I 42m 4 2m Kuramite Cu3SnS4 I 42m 4 2m Sakuraiite (Cu,Zn,Fe,In,Sn)4S4 P 432, P 43m, or P m3m Cubic Hocartite Ag2FeSnS4 I 42m 4 2m Pirquitasite Ag2ZnSnS4 I 42m 4 2m Velikite Cu2HgSnS4 I 42m 4 2m Kesterite Cu2(Zn,Fe)SnS4 I 4 4 Ferrokesterite Cu2(Fe,Zn)SnS4 I 42m 4 2m Barquillite! Cu2CdGeS4 I 42m 4 2m
Help on  Strunz Class: Strunz Class: 02.CB.05b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.C - Metal Sulfides, M:S = 1:1 (and similar)
  02.CB -With Zn, Fe, Cu, Ag, Au, etc
02.CB.05b Sakuraiite (Cu,Zn,Fe,In,Sn)4S4 P 432, P 43m, or P m3m Cubic

Other Sakuraiite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(AntBidBlaNic1) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: 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

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Dana No: Strunz No: 02.CB.05b





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