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Toyohaite Mineral Data
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General Toyohaite Information
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 Chemical Formula: |
Ag2FeSn3S8 |
| Composition: |
Molecular Weight = 884.24 gm |
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Iron 6.32 % Fe |
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Silver 24.40 % Ag |
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Tin 40.28 % Sn |
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Sulfur 29.01 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Ag2Fe2+Sn3S8 |
| Environment: |
Minor ore mineral. |
| IMA Status: |
Approved IMA 1991 |
| Locality: |
Toyoha mine, Sapporo, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Toyohaite + Pronunciation  |
| Synonym: |
IMA1989-007 |
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Toyohaite Image |
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Images:
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Toyohaite
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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Images:
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Toyohaite
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 |
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Toyohaite Crystallography
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| Axial Ratios: |
a:c = 1:1.44694 |
| Cell Dimensions: |
a = 7.464, c = 10.8, Z = 2; V = 601.68 Den(Calc)= 4.88 |
| Crystal System: |
Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: I 41/a |
| X Ray Diffraction: |
By Intensity(I/Io): 3.21(1), 2.03(0.35), 3.72(0.35), |
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Physical Properties of Toyohaite
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| Color: |
Gray. |
| Density: |
4.94 |
| Diaphaneity: |
Opaque |
| Hardness: |
4 - Fluorite |
| Luster: |
Metallic |
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Calculated Properties of Toyohaite
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| Electron Density: |
Bulk Density (Electron Density)=4.39 gm/cc
note: Specific Gravity of Toyohaite =4.88 gm/cc.
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| Fermion Index: |
Fermion Index = 0.07
Boson Index = 0.93 |
| Photoelectric: |
PEToyohaite = 188.68 barns/electron
U=PEToyohaite x rElectron Density= 828.88 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Toyohaite is Not Radioactive |
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Toyohaite Classification
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| Dana Class: |
02.10.03.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.10)where Am Bn Xp, with (m+n):p=3:4 |
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(02.10.03)Dana Group |
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02.10.03.01 Rhodostannite Cu2FeSn3S8 I 41/a 4/m |
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02.10.03.02 Toyohaite Ag2FeSn3S8 I 41/a 4/m |
| Strunz Class: |
02.DA.10 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.DA -M:S = 3:4 |
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02.DA.10 Rhodostannite Cu2FeSn3S8 I 41/a 4/m |
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02.DA.10 Toyohaite Ag2FeSn3S8 I 41/a 4/m |
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Other Toyohaite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.77,p1117,1992) |
| 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
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Toyohaite Specimen Label here :
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Toyohaite
Ag2FeSn3S8
Dana No: 02.10.03.02 Strunz No: 02.DA.10
Locality:
Notes:
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