Fukuchilite Mineral Data

General Fukuchilite Information

Chemical Formula:

Cu3FeS8

Composition:

Molecular Weight = 503.01 gm

Iron 11.10 % Fe

Copper 37.90 % Cu

Sulfur 51.00 % S

______

100.00 %

Empirical Formula:

Cu₃Fe²⁺S₈

Environment:

Found in an ore body of gypsum-anhydrite, occurring in interstices of small masses consisting of barite, covellite, and pyrite.

IMA Status:

Approved IMA 1969

Locality:

Hanawa mine, Akita Prefecture, Honshu, Japan. Link to MinDat.org Location Data.

Name Origin:

For Nobuyo Fukuchi (1877-1934).

Name Pronunciation:

Fukuchilite + Pronunciation

Synonym:

ICSD 74217

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Fukuchilite Image

Images:

Fukuchilite

Comments: Dark brown fine-grained fukuchilite in white gypsum.
Location: Hanawa Mine, Kazuno City, Akita, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fukuchilite Crystallography

Cell Dimensions:

a = 5.58, Z = 1; V = 173.74 Den(Calc)= 4.81

Crystal System:

Isometric - Diploidal H-M Symbol (2/m 3) Space Group: P a3

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

By Intensity(I/I_o): 2.789(1), 1.685(0.8), 3.21(0.8),

Physical Properties of Fukuchilite

Color:

Gray.

Density:

4.9

Diaphaneity:

Opaque

Hardness:

6 - Orthoclase

Luster:

Sub Metallic

Optical Properties of Fukuchilite

RL Color:

Pinkish brown, similar bornite.

Calculated Properties of Fukuchilite

Electron Density:

Bulk Density (Electron Density)=4.61 gm/cc
note: Specific Gravity of Fukuchilite =4.81 gm/cc.

Fermion Index:

Fermion Index = 0.0061786006
Boson Index = 0.9938213994

Photoelectric:

PE_Fukuchilite= 22.82 barns/electron
U=PE_Fukuchilite x rElectron Density= 105.17 barns/cc.

Radioactivity:

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

Fukuchilite Classification

Dana Class:

02.12.01.07 (02)Sulfides - Including Selenides and Tellurides

(02.12)where Am Bn Xp, with (m+n):p=1:2

(02.12.01)Pyrite Group (Isometric: Pa3)

02.12.01.01 Pyrite FeS2 P a3 2/m 3

02.12.01.02 Vaesite NiS2 P a3 2/m 3

02.12.01.03 Cattierite CoS2 P a3 2/m 3

02.12.01.04 Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3

02.12.01.05 Trogtalite CoSe2 P a3 2/m 3

02.12.01.06 Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3

02.12.01.07 Fukuchilite Cu3FeS8 P a3 2/m 3

02.12.01.08 Krutaite CuSe2 P a3 2/m 3

02.12.01.09 Hauerite MnS2 P a3 2/m 3

02.12.01.10 Laurite RuS2 P a3 2/m 3

02.12.01.11 Aurostibite AuSb2 P a3 2/m 3

02.12.01.12 Krutovite NiAs2 P a3 2/m 3

02.12.01.13 Sperrylite PtAs2 P a3 2/m 3

02.12.01.14 Geversite Pt(Sb,Bi)2 P a3 2/m 3

02.12.01.15 Insizwaite Pt(Bi,Sb)2 P a3 2/m 3

02.12.01.16 Erlichmanite OsS2 P a3 2/m 3

02.12.01.17 Dzharkenite FeSe2 P a3 2/m 3

02.12.01.18 Gaotaiite Ir3Te8 P a3 2/m 3

02.12.01.19 Mayingite IrBiTe P a3 2/m 3

Strunz Class:

02.EB.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.E - Metal Sulfides, M:S ï¿½ 1:2

02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc.

02.EB.05a Aurostibite AuSb2 P a3 2/m 3

02.EB.05a Cattierite CoS2 P a3 2/m 3

02.EB.05a Hauerite MnS2 P a3 2/m 3

02.EB.05a Fukuchilite Cu3FeS8 P a3 2/m 3

02.EB.05a Dzharkenite FeSe2 P a3 2/m 3

02.EB.05a Erlichmanite OsS2 P a3 2/m 3

02.EB.05a Geversite Pt(Sb,Bi)2 P a3 2/m 3

02.EB.05a Gaotaiite Ir3Te8 P a3 2/m 3

02.EB.05a Insizwaite Pt(Bi,Sb)2 P a3 2/m 3

02.EB.05a Laurite RuS2 P a3 2/m 3

02.EB.05a Krutaite CuSe2 P a3 2/m 3

02.EB.05a Pyrite FeS2 P a3 2/m 3

02.EB.05a Penroseite (Ni,Co,Cu)Se2 P a3 2/m 3

02.EB.05a Sperrylite PtAs2 P a3 2/m 3

02.EB.05a Vaesite NiS2 P a3 2/m 3

02.EB.05a Villamaninite (Cu,Ni,Co,Fe)S2 P a3 2/m 3

02.EB.05a Trogtalite CoSe2 P a3 2/m 3

Other Fukuchilite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Fukuchilite :
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 Fukuchilite Specimen Label here :

Fukuchilite

Cu3FeS8
Dana No: 02.12.01.07 Strunz No: 02.EB.05a
Locality:

Notes:

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