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Idaite

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Idait
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Idait

Bildbreite: 2 mm, Fundort: Tier des Carrières, Cahai (Cahay), Vielsalm, Stavelot-Massiv, Provinz Luxemburg, Belgien
Copyright: Luigi Chiappino
Contribution: thdun5 2010-07-26
Locality: Tier des Carrières / Cahai (Cahay) / Vielsalm / Bastogne, Bezirk / Luxemburg (Luxembourg), Provinz / Belgien

Collectors Summary

Color kupferrot, braun
Lustre Metallglanz
Hardness (Mohs) 2.5 - 3.5
Solubility - HCl, H2SO4
Crystal System tetragonal, I42m

Chemism

Chem­ical formula

Cu3FeS4

Chem­ical com­po­si­tion

Eisen, Kupfer, Schwefel

Unit weight: 374.7461 u; Number of atoms in the formula: 8

Info

Empirical formula:

Cu3FeS4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

34.23

4

50.00

32.0655000

128.2620000
Iron

Fe

14.90

1

12.50

55.8452000

55.8452000
Copper

Cu

50.87

3

37.50

63.5463000

190.6389000

Anal­y­sis wt%

Cu : 51.34, Fe : 14.50, S : 33.66 (Ref: American Mineralogist 75)

Strunz 9th edi­tion incl. updates

2.CB.15

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
B: mit Zink (Zn), Eisen (Fe), Kupfer (Cu), Silber (Ag), usw.
15:Stannit-Gruppe

Lapis Clas­sifica­tion

II/C.22-030

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
C: Sulfide mit Metall : S,Se,Te ~ 1:1

Clas­sifica­tion by Hölzel

2.CA.180

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
A: With Cu Coordination Number ~[3] and ~[4], Layers
1: Covellite-Group

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

kupferrot, braun

Change in color

orangrot in reflektiertem Licht

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Pleochro­ism

stark

Anisotropism

sehr stark

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(400) 13.90, 17.70, 15.80
(420) 14.80, 18.50, 16.65
(440) 15.70, 19.30, 17.50
(460) 16.90, 21.00, 18.95
(480) 18.40, 23.20, 20.80
(500) 20.50, 25.50, 23.00
(520) 23.20, 27.80, 25.50
(540) 26.10, 29.40, 27.75
(560) 28.90, 30.60, 29.75
(580) 30.60, 31.40, 31.00
(600) 31.90, 31.60, 31.75
(620) 32.80, 31.90, 32.35
(640) 33.50, 32.20, 32.85
(660) 34.10, 32.80, 33.45
(680) 34.70, 33.20, 33.95
(700) 35.20, 33.70, 34.45
Reflection chart Idaite

Reflec­tiv­ity Ø

26.59

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

42m

Space Group number

121

Space Group

I42m

Cell param­e­ters a (Å)

5.279

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

10.47

Cell param­e­ters a/b or c/a

1.983

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

120°

Z

2

Volumne (ų)

291.776

X-Ray Pow­der Diffrac­tion

3.14(100),
2.82(100),
2.70(50),
1.89(100),
1.85(100),
1.564(100),
1.317(50)
XRD chart Idaite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Hard­ness (Mohs)

2.5 - 3.5

VHN (Hard­ness Vick­ers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.2 (gemessen) 4.26 (berechnet)

4.265 ( ρ calc. Mineralienatlas )

Insta­bil­ity

- HCl, H2SO4

(Co-)Type locality

(Co-)Type locality

Namibia/Erongo, Region/Swakopmund, Kreis/Ida Mine

Preface

Gen­er­a­tion con­di­tions

Bildet sich als Verwitterungsprodukt des Bornit.

Author (Name, Year)

Frenzel, 1958

References

European Journal of Mineralogy 15 (2003), 1063
Lehrbuch der Mineralogie/Rösler (1991)

Other languages

German

Idait

French

Idaite

English

Idaite

Spanish

Idaíta

Russian

Идаит

Simplified Chinese

铁铜蓝

Japanese

ｱｲﾀﾞ鉱

Alternative Name

Orange bornite

Simplified Chinese

伊达矿

CNMNC symbol

Symbol

Ida

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

 DeWikiPedia - search for: Idait
Google-Bilder-Suche - search for: Idait
Mineralienatlas.de (Forum) - search for: Idait

English pages

 Mindat - search for: Idaite
Webmineral - search for:Idaite
Handbook-of-Mineralogy - search for: Idaite
RRUFF - Raman, XRD and other mineral data - search for: Idaite
RRUFF - References and PDF downloads - search for: Idaite
American-Mineralogist-Crystal-Structure-Database - search for: Idaite
Strahlen.org - search for: Idaite

Russian pages

 Webmineral.ru - search for: Идаит

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Idait
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Locations with GPS information