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Heideite

Collectors Summary

Color cremeweiß
Hardness (Mohs) 4
Solubility +++ HNO3, - HCl
Crystal System monoklin, I2/m

Chemism

Chemical formula

(Fe,Cr)1.15(Ti,Fe)2S4

Chemical composition

Chrom, Eisen, Titan, Schwefel

Unit weight: 291.100631 u; Number of atoms in the formula: 7.15

Info

Empirical formula:

(Fe0.75Cr0.25)1.15(Ti0.75Fe0.25)2S4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

44.06

4

55.94

32.0655000

128.2620000

Titanium

Ti

24.67

1.5

20.98

47.8671000

71.8006500

Chromium

Cr

5.14

0.29

4.02

51.9961600

14.9488960

Iron

Fe

26.14

1.36

19.06

55.8452000

76.0890850

Analysis wt%

Ø Ti : 28.50, Fe : 25.10, Cr : 2.90, S : 44.90 (Ref: American Mineralogist 74)

Strunz 9th edition incl. updates

2.DA.15

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
D: Metallsulfide mit M:S = 3:4 und 2:3
A: M:S = 3:4
15:Brezinait-Gruppe

Lapis Classification

II/C.19-070

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

Classification by Hölzel

2.DA.560

2: SULFIDES
D: With Me/S <1/1 and >1/2
A: Me/S=3/4 Thiospinels, etc
5: Brezianite-Group

Dana 8th edition

02.10.02.03

02: Sulfide Minerals
10: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=3:4
02: Wilkmanite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

cremeweiß

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

I2/m

Cell parameters a (Å)

5.97

Cell parameters b (Å)

3.42

Cell parameters c (Å)

11.4

Cell parameters a/b or c/a

1.746

Cell parameters c/b

3.333

Cell parameters α

90°

Cell parameters β

90.20

Cell parameters γ

90°

Z

2

Volumne (ų)

232.757

X-Ray Powder Diffraction

5.71(20),
5.28(20),
2.97(50),
2.64(70),
2.06(100),
1.72(70),
1.44(10)

XRD chart Heideite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

4

VHN (Hardness Vickers)

190 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.1

4.153 ( ρ calc. Mineralienatlas )

Instability

+++ HNO3, - HCl

(Co-)Type locality

(Co-)Type locality

Indien/Uttar Pradesh/Basti District/Bustee Meteorit

Preface

Author (Name, Year)

Keil & Brett, 1974

References

American Mineralogist 59 (1974), 465

Other languages

German

Heideit

English

Heideite

French

Heideite

Spanish

Heideíta

Russian

Хейдеит

Simplified Chinese

硫钛铁矿

Alternative Name

Simplified Chinese

硫钛铬铁矿

CNMNC (IMA)-Number

IMA 1973-062

CNMNC symbol

Symbol

Hei

Locations with GPS information