Hexaferrum Mineral Data

Advertisment

Adamsminerals.com- Online mineral store front for mineral collectors

General Hexaferrum Information

Chemical Formula:

(Fe,Os,Ru,Ir)

Composition:

Molecular Weight = 86.51 gm

Iron 41.96 % Fe

Iridium 31.11 % Ir

Osmium 17.59 % Os

Ruthenium 9.35 % Ru

______

100.00 %

Empirical Formula:

Fe⁰⁺_0.65Ir_0.14Os_0.08Ru_0.08

Environment:

Found in chromite segregations in dunite.

IMA Status:

Approved IMA 1995 (Dana # Added)

Locality:

The Chirynaisky massif, Koryak Mountains, Kamchatka, Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the symmetry and composition.

Synonym:

IMA1995-032

Hexaferrum Image

Images:

Hexaferrum

Comments: Polished section showing a white euhedral crystal of hexaferrum in gray chromite.
Location: Pole Corral Pass, Rattlesnake Creek Terrane, Beegum, California, USA. Scale: Picture size 14 mm.
© Thomas Witzke

Hexaferrum Crystallography

Axial Ratios:

a:c = 1:1.60864

Cell Dimensions:

a = 2.591, c = 4.168, Z = 2; V = 24.23 Den(Calc)= 11.86

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): 1.976(1), 1.297(0.6), 2.087(0.6),

Physical Properties of Hexaferrum

Cleavage:

None

Color:

Yellowish steel gray.

Diaphaneity:

Opaque

Habit:

Inclusions - Generally found as inclusions in other minerals.

Habit:

Pseudo Cubic - Crystals show a cubic outline.

Hardness:

6-7 - Orthoclase-Quartz

Luster:

Metallic

Streak:

black

Optical Properties of Hexaferrum

RL Anisotrophism:

Weak.

RL Bireflectance:

None.

RL Color:

White.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Hexaferrum in Air**
λ	R	∑ R(λ)
480 nm	55.10
560 nm	53.40
580 nm	53.20
660 nm	54.70

**Calculated Relative Intensity Colors of Hexaferrum in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%	170%
R

Calculated Properties of Hexaferrum

Electron Density:

Bulk Density (Electron Density)=10.2 gm/cc
note: Specific Gravity of Hexaferrum =11.9 gm/cc.

Fermion Index:

Fermion Index = 0.06
Boson Index = 0.94

Photoelectric:

PE_Hexaferrum= 721.29 barns/electron
U=PE_Hexaferrum x rElectron Density=7,372.56 barns/cc.

Radioactivity:

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

Hexaferrum Classification

Dana Class:

01.02.02.04 (01)Native Elements

(01.02)with platinum group metals and alloys

(01.02.02)Osmium group (Space Group P63/mmc)

01.02.02.01 Osmium (Os,Ir) P 6₃/mmc 6/m 2/m 2/m

01.02.02.02 Ruthenium (Ru,Ir,Os) P 6₃/mmc 6/m 2/m 2/m

01.02.02.03 Rutheniridosmine (Ir,Os,Ru) P 6₃/mmc 6/m 2/m 2/m

01.02.02.04 Hexaferrum! (Fe,Os,Ru,Ir) P 6₃/mmc 6/m 2/m 2/m

01.02.02.05 Hexamolybdenum! (Mo,Ru,Fe,Ir,Os) P 6₃/mmc 6/m 2/m 2/m

01.02.02.06 IMA2008-055! (Ni,Fe,Ir) P 6₃/mmc 6/m 2/m 2/m

Strunz Class:

01.AG.05 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)

01.A - Metals and Intermetallic Alloys

01.AG -PGE-metal alloys

01.AG.05 Hexaferrum! (Fe,Os,Ru,Ir) P 6₃/mmc 6/m 2/m 2/m

01.AG.05 IMA2008-055! (Ni,Fe,Ir) P 6₃/mmc 6/m 2/m 2/m

Other Hexaferrum Information

References:

NAME( MinRec, V. 31, No. 2) PHYS. PROP.(MinRec, V 31, No. 2) OPTIC PROP.(AmMin,v 84, p 1686)

See Also:

Links to other databases for Hexaferrum :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Hexaferrum using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Hexaferrum :

A Bijoux Google Search for Hexaferrum
Adam's Minerals Google Search for Hexaferrum
Cape Minerals Google Search for Hexaferrum
Dakota Matrix Minerals Google Search for Hexaferrum
Excalibur Mineral Corp. Google Search for Hexaferrum
Exceptional Minerals Google Search for Hexaferrum
John Betts Fine Minerals Search for Hexaferrum
McDougall Minerals Google Search for Hexaferrum
Mineral News Website Link
Rock and Mineral Shows Google Search for Hexaferrum
Weinrich Minerals, Inc. Google Search for Hexaferrum

Ask about Hexaferrum 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 Hexaferrum Specimen Label here :

Hexaferrum

(Fe,Os,Ru,Ir)
Dana No: 01.02.02.04 Strunz No: 01.AG.05
Locality:

Notes: