Idaite Mineral Data

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General Idaite Information

Chemical Formula:

Cu5FeS6

Composition:

Molecular Weight = 565.97 gm

Iron 9.87 % Fe

Copper 56.14 % Cu

Sulfur 33.99 % S

______

100.00 %

Empirical Formula:

Cu₅Fe²⁺S₆

Environment:

A lamellar decomposition product of bornite, commonly associated with fine spindles of chalcopyrite, apparently of secondary origin as the first product of enrichment.

IMA Status:

Valid Species (Pre-IMA) 1958

Locality:

Ida mine, Khan, and Tsumeb, Namibia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Idaite

Synonym:

ICSD 16552 ?

PDF 13-161

Idaite Image

Images:

Idaite

Comments: Deep blue metallic idaite in milky quartz.
Location: Winston, Sierra County, New Mexico, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Idaite Crystallography

Axial Ratios:

a:c = 1:4.34615

Cell Dimensions:

a = 3.9, c = 16.95, Z = 1; V = 223.27 Den(Calc)= 4.21

Crystal System:

Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6₃/mmc

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

By Intensity(I/I_o): 3.134(1), 2.818(0.8), 1.887(0.65),

Physical Properties of Idaite

Color:

Brown, Copper red, Red.

Density:

4.2

Diaphaneity:

Opaque

Habit:

Inclusions - Generally found as inclusions in other minerals.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

2.5-3.5 - Finger Nail-Copper Penny

Luster:

Metallic

Optical Properties of Idaite

RL Anisotrophism:

Strong, reddish orange to reddish brown.

RL Color:

Coppery red to pinchbeck brown.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Idaite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	13.90	17.70
420 nm	14.80	18.50
440 nm	15.70	19.30
460 nm	16.90	21.00
480 nm	18.40	23.20
500 nm	20.50	25.50
520 nm	23.20	27.80
540 nm	26.10	29.40
560 nm	28.90	30.60
580 nm	30.60	31.40
600 nm	31.90	31.60
620 nm	32.80	31.90
640 nm	33.50	32.20
660 nm	34.10	32.80
680 nm	34.70	33.20
700 nm	35.20	33.70

**Calculated Relative Intensity Colors of Idaite in Air**
Relative Intensity	0%	60%	100%	120%	180%	240%	300%	360%	420%	480%	530%
R₁
R₂

Calculated Properties of Idaite

Electron Density:

Bulk Density (Electron Density)=3.97 gm/cc
note: Specific Gravity of Idaite =4.21 gm/cc.

Fermion Index:

Fermion Index = 0.0046414341
Boson Index = 0.9953585659

Photoelectric:

PE_Idaite= 29.94 barns/electron
U=PE_Idaite x rElectron Density= 118.91 barns/cc.

Radioactivity:

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

Idaite Classification

Dana Class:

02.09.14.01 (02)Sulfides - Including Selenides and Tellurides

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

(02.09.14)Dana Group

02.09.14.01 Idaite Cu5FeS6 P 6₃/mmc 6/m 2/m 2/m

02.09.14.02 Catamarcaite! Cu6GeWS8 P 6₃mc 6/m 2/m 2/m

Strunz Class:

02.CB.15a 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.15a Cernyite Cu2CdSnS4 I 42m 4 2m

02.CB.15a Ferrokesterite Cu2(Fe,Zn)SnS4 I 42m 4 2m

02.CB.15a Kesterite Cu2(Zn,Fe)SnS4 I 4 4

02.CB.15a Hocartite Ag2FeSnS4 I 42m 4 2m

02.CB.15a Idaite Cu5FeS6 P 6₃/mmc 6/m 2/m 2/m

02.CB.15a Kuramite Cu3SnS4 I 42m 4 2m

02.CB.15a Pirquitasite Ag2ZnSnS4 I 42m 4 2m

02.CB.15a Stannite Cu2FeSnS4 I 42m 4 2m

02.CB.15a Velikite Cu2HgSnS4 I 42m 4 2m

Other Idaite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Idaite :
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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Ask about Idaite 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 Idaite Specimen Label here :

Idaite

Cu5FeS6
Dana No: 02.09.14.01 Strunz No: 02.CB.15a
Locality:

Notes: