Toyohaite Mineral Data

General Toyohaite Information

Chemical Formula:

Ag2FeSn3S8

Composition:

Molecular Weight = 884.24 gm

Iron 6.32 % Fe

Silver 24.40 % Ag

Tin 40.28 % Sn

Sulfur 29.01 % S

______

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

Toyohaite Image

Images:

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

Images:

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

Toyohaite Crystallography

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 - DipyramidalH-M Symbol (4/m) Space Group: I 4₁/a

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.21(1), 2.03(0.35), 3.72(0.35),

Physical Properties of Toyohaite

Color:

Gray.

Density:

4.94

Diaphaneity:

Opaque

Hardness:

4 - Fluorite

Luster:

Metallic

Calculated Properties of Toyohaite

Electron Density:

Bulk Density (Electron Density)=4.39 gm/cc
note: Specific Gravity of Toyohaite =4.88 gm/cc.

Fermion Index:

Fermion Index = 0.07
Boson Index = 0.93

Photoelectric:

PE_Toyohaite= 188.68 barns/electron
U=PE_Toyohaite x rElectron Density= 828.88 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Toyohaite is Not Radioactive

Toyohaite Classification

Dana Class:

02.10.03.02 (02)Sulfides - Including Selenides and Tellurides

(02.10)where Am Bn Xp, with (m+n):p=3:4

(02.10.03)Dana Group

02.10.03.01 Rhodostannite Cu2FeSn3S8 I 4₁/a 4/m

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

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

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

Search for Toyohaite using:

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Ask about Toyohaite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Toyohaite Specimen Label here :

Toyohaite

Ag2FeSn3S8
Dana No: 02.10.03.02 Strunz No: 02.DA.10
Locality:

Notes: