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Hydroxyferroroméite

Additional Functions

Collectors Summary

Color gelb, gelbbraun
Crystal System kubisch, Fd3m

Chemism

Chemical formula

(Fe2+1.50.5)Sb5+2O6(OH)

Empirical formula (analysis)

(Fe2+1.07Cu2+0.50Zn0.03Sr0.03Ca0.010.36)Σ2 (Sb5+1.88Si0.09Al0.02As0.01)Σ2 O6((OH)0.86O0.14)

Chemical composition

Antimon, Eisen, Sauerstoff, Wasserstoff, Vakanz

Unit weight: 442.1075869076 u; Number of atoms in the formula: 11.86

Info

Empirical formula:

(Fe1.07Cu0.50Zn0.03Sr0.03Ca0.01Vc0.36)(Sb1.88Si0.09Al0.02As0.01)O6((OH)0.86O0.14)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Vacancy

Vc

0.00

0.36

3.04

0.0000000

0.0000000

Hydrogen

H

0.20

0.86

7.25

1.0079470

0.8668344

Oxygen

O

25.33

7

59.02

15.9994300

111.9960100

Aluminium

Al

0.12

0.02

0.17

26.9815382

0.5396308

Silicon

Si

0.57

0.09

0.76

28.0855300

2.5276977

Calcium

Ca

0.09

0.01

0.08

40.0784000

0.4007840

Iron

Fe

13.52

1.07

9.02

55.8452000

59.7543640

Copper

Cu

7.19

0.5

4.22

63.5463000

31.7731500

Zinc

Zn

0.44

0.03

0.25

65.4094000

1.9622820

Arsenic

As

0.17

0.01

0.08

74.9216020

0.7492160

Strontium

Sr

0.59

0.03

0.25

87.6210000

2.6286300

Antimony

Sb

51.78

1.88

15.85

121.7601000

228.9089880

Strunz 9th edition incl. updates

4.DH.15

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
H: Mit großen (± mittelgroßen) [Kationen]; Lagen kantenverknüpfter Oktaeder
15:Pyrochlor-Gruppe

Lapis Classification

IV/C.16-030

IV: OXIDE
C: Oxide mit Verhältnis Metall : Sauerstoff = 2:3 (M2O3 und verwandte Verbindungen)
16: Pyrochlor-Gruppe; ROMEIT-Untergruppe [Sb ± Ti]

IMA status

anerkannt - CNMNC Newsletter No. 31, June 2016, page 692; Mineralogical Magazine, 80, 691–697.

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Pyrochlore supergroup  ⇒ Roméite group

Optical Properties

Color

gelb, gelbbraun

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

10.25(3)

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

8

Volume (ų)

1076.891

Crystal structure

Pyrochlor-Supergruppe

X-Ray Powder Diffraction

5.971(65), 3.190(63), 3.069(100), 2.681(48), 2.005(63), 1.935(25), 1.785(43)

XRD chart Hydroxyferroroméite

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

Physical Properties

Density (g/cm³)

5.453 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Frankreich/Okzitanien (Occitanie), Region/Pyrenées-Orientales, Département/Céret, Arrondissement/Oms/Correc d'en Llinassos (Ravin d'en Llinassous)

Type material

Museum Victoria, Melbourne, Victoria, Australia, Registrierungsnummer M53584

Natural History Museum, London, UK, Registrierungsnummer BM2016,2

Paragenesis of type material

Siderit-Quarz-Matrix

Preface

Occurrences

Pulverförmig bis zu etwa 50 μm nach Tetrahedrit

Author (Name, Year)

Stuart J. Mills, Andrew G. Christy, Mike S. Rumsey, John Spratt, Erica Bittarello, Georges Favreau, Marco E. Ciriotti und Christian Berbain (2016)

References

Mills, S.J., Christy, A.C., Rumsey, M.S., Spratt, J., Bittarello, E., Favreau, G., Ciriotti, M.E. und Berbain, C. (2016) Hydroxyferroroméite, IMA 2016-006. CNMNC Newsletter No. 31, June 2016, page 695; Mineralogical Magazine, 80, 691–697.

Mills, S.J., Christy, A.C., Rumsey, M.S., Spratt, J., Bittarello, E., Favreau, G., Ciriotti, M.E. und Berbain, C. - Hydroxyferroroméite, a new secondary weathering mineral from 2 Oms, France - European Journal of Mineralogy; Appeared or available online: 13. Februar 2017

IMA group assignments

Other languages

German

Hydroxyferroroméit

English

Hydroxyferroroméite

Russian

Гидроксиферроромеит

CNMNC (IMA)-Number

IMA 2016-006

CNMNC symbol

Symbol

Hfr

IDs

GUSID (Global unique identifier short form) Moo9dmXonUKpGc6YBAFYmQ
GUID (Global unique identifier) 763D8A32-E865-429D-A919-CE9804015899
Database ID 8137