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Toyohaite Mineral Data

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General Toyohaite Information

Help on Chemical  Formula: Chemical Formula: Ag2FeSn3S8
Help on Composition: Composition: Molecular Weight = 884.24 gm
   Iron     6.32 %  Fe
   Silver  24.40 %  Ag
   Tin     40.28 %  Sn
   Sulfur  29.01 %  S
          100.00 % 
Help on Empirical Formula: Empirical Formula: Ag2Fe2+Sn3S8
Help on Environment: Environment: Minor ore mineral.
Help on IMA Status: IMA Status: Approved IMA 1991
Help on Locality: Locality: Toyoha mine, Sapporo, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Toyohaite + Pronunciation Say TOYOHAITE
Help on Synonym: Synonym: IMA1989-007

Toyohaite Image

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Comments: Acicular needles of metallic toyohaite on matrix.
Location: Pirquitas (sector Oploca, level 7 1/4), Jujuy, Argentina. Scale: Specimen size 7.1 x 5.6 x 3.4 cm.
© Rob Lavinsky

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Comments: B&:W image showing checkered twins of toyohaite. (Mineralogical Journal, v15:222).
Location: Toyoha mine, SW Sapporo City, Hokkaido, Japan. Scale: Scale Bar 50µm.
© Mineralogical Journal

Toyohaite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.44694
Help on Cell Dimensions: Cell Dimensions: a = 7.464, c = 10.8, Z = 2; V = 601.68 Den(Calc)= 4.88
Help on Crystal System: Crystal System: Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: I 41/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.21(1), 2.03(0.35), 3.72(0.35),

Physical Properties of Toyohaite

Help on Color: Color: Gray.
Help on Density: Density: 4.94
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Metallic

Calculated Properties of Toyohaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.39 gm/cc
note: Specific Gravity of Toyohaite =4.88 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEToyohaite = 188.68 barns/electron
U=PEToyohaite x rElectron Density= 828.88 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Toyohaite is Not Radioactive

Toyohaite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.10)where Am Bn Xp, with (m+n):p=3:4
  (02.10.03)Dana Group Rhodostannite Cu2FeSn3S8 I 41/a 4/m Toyohaite Ag2FeSn3S8 I 41/a 4/m
Help on  Strunz Class: Strunz Class: 02.DA.10 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.D - Metal Sulfides, M:S = 3:4 and 2:3
  02.DA -M:S = 3:4
02.DA.10 Rhodostannite Cu2FeSn3S8 I 41/a 4/m
02.DA.10 Toyohaite Ag2FeSn3S8 I 41/a 4/m

Other Toyohaite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.77,p1117,1992)
Help on See Also: See Also: Links to other databases for Toyohaite :
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.DA.10





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