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Chromferide (Chromferid)

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Chromferide
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Chromferide

SEM image of 0.28x0.18x0.15 mm micro-nugget of pure, analyticaly confirmed Chromferide extracted from heavy fraction of unspecified gold placer in area of Kumak gold deposit - the type locality of...

Copyright: Pavel M. Kartashov
Contribution: Stefan 2015-07-29
Locality: Kumak / Orsk / Orenburg, Oblast / Wolga, Föderationskreis / Russland

Collectors Summary

Color grauweiß
Lustre Metallglanz
Hardness (Mohs) 4 - 4.5
Crystal System kubisch, Pm3m

Chemism

Chem­ical formula

Fe1.5Cr0.2

Chem­ical com­po­si­tion

Chrom, Eisen

Unit weight: 94.167032 u; Number of atoms in the formula: 1.7

Info

Empirical formula:

Fe1.5Cr0.2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Chromium

Cr

11.04

0.2

11.76

51.9961600

10.3992320

Iron

Fe

88.96

1.5

88.24

55.8452000

83.7678000

Anal­y­sis wt%

Ø Fe : 88.91, Cr : 11.30 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 86)

Strunz 9th edi­tion incl. updates

1.AE.15

1: Elemente (Metalle, intermetallische Legierungen, Metalloide u. Nichtmetalle, Carbide, Silicide, Nitride u. Phosphide)
A: Metalle und intermetallische Legierungen
E: Eisen-Chrom-Familie
15:Wairauit-Gruppe

Lapis Clas­sifica­tion

I/A.06-030

I: ELEMENTE
A: Metalle und intermetallische Verbindungen

Clas­sifica­tion by Hölzel

1.AF.160

1: ELEMENTS
A: Metals, Intermetallic Compounds, and Alloys
F: Fe-Cr-Group
1: cubic

Hey's Chem­ical Index of Min­er­als

01.58

01: Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)

Dana 8th edi­tion

01.01.12.02

01: Native Elements and Alloys
01: Native Elements with metallic elements other than the platinum group

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

grauweiß

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Anisotropism

isotropisch

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(440) 50.40, , 50.40
(460) 51.40, , 51.40
(480) 50.90, , 50.90
(500) 52.60, , 52.60
(520) 53.00, , 53.00
(540) 55.30, , 55.30
(560) 56.50, , 56.50
(580) 56.90, , 56.90
(600) 57.90, , 57.90
(620) 58.30, , 58.30
(640) 59.00, , 59.00
(660) 60.00, , 60.00
(680) 60.70, , 60.70
(700) 60.80, , 60.80

Reflection chart Chromferide

Reflec­tiv­ity Ø

55.98

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

221

Space Group

Pm3m

Cell param­e­ters a (Å)

2.859

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

1

Volumne (ų)

23.369

X-Ray Pow­der Diffrac­tion

2.87(2),
2.02(10),
1.656(1),
1.43(8),
1.28(5),
1.16(10),
1.01(7)

XRD chart Chromferide

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

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

4 - 4.5

VHN (Hard­ness Vick­ers)

260 (100g)

Density (g/cm³)

6.69 (berechnet)

6.691 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Russland/Wolga, Föderationskreis/Orenburg, Oblast/Orsk/Kumak/Efim

Type mate­r­ial

A. E. Fersman Mineralogical Museum, Academy of Sciences, Moskau, Russland

Preface

Name from

Für die chemische Zusammensetzung, CHROMium (Chrom) und FERrum (Eisen)

Author (Name, Year)

Novgorodova & Gorshkov & Turbkin & Tsepin & Dmitrieva, 1986

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 115 (1986), 355.

American Mineralogist 73 (1988), 190 (Zusammenfassung).

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Wairauite

CoFe

kubisch : m3m : Pm3m

1.AE.15

Chromferide

Fe1.5Cr0.2

kubisch : m3m : Pm3m

1.AE.15

Ferchromide

Cr3Fe1-x

kubisch : m3m : Pm3m

1.AE.15

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Titanium

Ti

hexagonal : 6/mmm : P63/mmc

I/A.06-005

'Tantalum'

Ta

kubisch : m3m : Im3m

I/A.06-007

Tungsten

W

kubisch : m3m : Im3m

I/A.06-008

Chromium

Cr

kubisch : m3m : Im3m

I/A.06-010

Ferchromide

Cr3Fe1-x

kubisch : m3m : Pm3m

I/A.06-020

Chromferide

Fe1.5Cr0.2

kubisch : m3m : Pm3m

I/A.06-030

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Iron

Fe

kubisch : m3m : Im3m

1.AF.100

'Kamacite'

(Fe,Ni)

kubisch : m3m : Im3m

1.AF.105

Wairauite

CoFe

kubisch : m3m : Pm3m

1.AF.120

Nickel

Ni

kubisch : m3m : Fm3m

1.AF.130

Taenite

(Ni,Fe)

kubisch : m3m : Fm3m

1.AF.135

Awaruite

Ni3Fe

kubisch : m3m : Pm3m

1.AF.140

Chromferide

Fe1.5Cr0.2

kubisch : m3m : Pm3m

1.AF.160

Ferchromide

Cr3Fe1-x

kubisch : m3m : Pm3m

1.AF.165

'Manganese'

Mn

kubisch : 432 : P4132

1.AF.180

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Leadamalgam

Pb0.7Hg0.3

tetragonal : 4/mmm : I4/mmm

01.01.10.01

'Kamacite'

(Fe,Ni)

kubisch : m3m : Im3m

01.01.11.01

Taenite

(Ni,Fe)

kubisch : m3m : Fm3m

01.01.11.02

Tetrataenite

FeNi

monoklin : m : Pm

01.01.11.03

Awaruite

Ni3Fe

kubisch : m3m : Pm3m

01.01.11.04

Nickel

Ni

kubisch : m3m : Fm3m

01.01.11.05

Wairauite

CoFe

kubisch : m3m : Pm3m

01.01.11.06

Chromium

Cr

kubisch : m3m : Im3m

01.01.12.01

Chromferide

Fe1.5Cr0.2

kubisch : m3m : Pm3m

01.01.12.02

Ferchromide

Cr3Fe1-x

kubisch : m3m : Pm3m

01.01.12.03

Tin

Sn

tetragonal : 4/mmm : I41/amd

01.01.13.01

Indium

In

tetragonal : 4/mmm : I4/mmm

01.01.14.01

Cupalite

(Cu,Zn)Al

01.01.15.01

Khatyrkite

(Cu,Zn)Al2

tetragonal : 4/mmm : I4/mcm

01.01.15.02

Cohenite

(Fe,Ni,Co)3C

orthorhombisch : mmm : Pnma

01.01.16.01

Haxonite

(FeNi)23C6

01.01.16.02

Isovite

(Cr,Fe)23C6

kubisch : m3m : Fm3m

01.01.16.03

Tongbaite

Cr3C2

orthorhombisch : mmm : Pnma

01.01.17.01

Florenskyite

Fe(Ti,Ni)P

orthorhombisch : mmm : Pnma

01.01.17.02

Siderazot

Fe3N1.33

hexagonal : 6/mmm : P63/mmc

01.01.18.01

Roaldite

Fe4N

kubisch : m3m : Pm3m

01.01.18.02

Osbornite

TiN

kubisch : m3m : Fm3m

01.01.19.01

Khamrabaevite

(Ti,V,Fe)C

kubisch : m3m : Fm3m

01.01.19.02

Niobocarbide

(Nb,Ta)C

kubisch : m3m : Fm3m

01.01.19.03

Tantalcarbide

TaC

kubisch : m3m : Fm3m

01.01.19.04

Related minerals "Hey's Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

IMA Number

IMA 1984-021

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

German pages

DeWikiPedia - search for: Chromferid
Google-Bilder-Suche - search for: Chromferid
Mineralogisch-Petrographisches-Institut Hamburg - search for: Chromferid

English pages

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

Russian pages

Webmineral.ru - search for: Хромферид

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Chromferid
Crystal-Treasure.com - search for: Chromferid
Bosse - search for: Chromferid

Locations with GPS information