Ruthenium Mineral Data

Ruthenium Mineral Data +

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General Ruthenium Information

Chemical Formula:

(Ru,Ir,Os)

Composition:

Molecular Weight = 137.33 gm

Iridium 41.99 % Ir

Osmium 13.85 % Os

Ruthenium 44.16 % Ru

______

100.00 %

Empirical Formula:

Ru_0.6Ir_0.3Os_0.1

Environment:

Placer deposits derived from ultrabasic rocks. Included in rutheniridosmine and in platinum.

IMA Status:

Approved IMA 1974

Locality:

Horakanai, Hokkaido, Japan. Link to MinDat.org Location Data.

Name Origin:

Named for the element (Latin, Ruthenia = "Russia.").

Ruthenium Image

Images:

Ruthenium Palladodymite Hongshiite

Comments: Palladodymite (light gray, in two small grains), hongshiite (pale creamy grayish, tarnished brownish) in massive ruthenium. Polished section (from microprobe analysis) in reflected light.
Location: Miass River, Zlatoust, Ilmen Mts, Chelyabinsk Oblast', Urals Region, Russia. Scale: Picture size 0.09 mm.
© Thomas Witzke / Abraxas-Verlag

Images:

Ruthenium Isoferroplatinum

Comments: Scanning electron micrograph of polished section of ruthenium nugget with isoferroplatinum inclusions.
Location: Miass River, Chelyabinsk District, Southern Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ruthenium Crystallography

Axial Ratios:

a:c = 1:1.59985

Cell Dimensions:

a = 2.704, c = 4.326, Z = 2; V = 27.39 Den(Calc)= 16.65

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): 2.056(1), 2.343(0.4), 2.142(0.35),

Crystal Structure:

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Wyckoff R W G , Crystal Structures , 1 (1963) p.7-83, Second edition. Interscience Publishers, New York, New York, Hexagonal closest packed, hcp, structure

Physical Properties of Ruthenium

Color:

Tin white.

Density:

12.2

Diaphaniety:

Opaque

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

6.5 - Pyrite

Luster:

Metallic

Optical Properties of Ruthenium

RL Anisotrophism:

Weak.

RL Color:

White with a creamy tint.

Calculated Properties of Ruthenium

Electron Density:

r_electron=13.8 gm/cc
note: r_Ruthenium=16.7 gm/cc.

Fermion Index

Fermion Index = 0.1561
Boson Index = 0.8439

Photoelectric:

PE_Ruthenium= 917.29 barns/electron
U=PE_Ruthenium x r_electron=12700.71 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Ruthenium is Not Radioactive

Ruthenium Classification

Dana Class:

1.2.2.2 (1)Native Elements

(1.2)with platinum group metals and alloys

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

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

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

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

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

Strunz Class:

I/A.13-30 I - Elements

I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides

I/A.13 - Osmium series

I/A.13-10 Rhenium* Re P 6₃/mmc 6/m 2/m 2/m

I/A.13-15 Hexaferrum! (Fe,Os,Ru,Ir) P 6₃/mmc 6/m 2/m 2/m

I/A.13-20 Osmium (Os,Ir) P 6₃/mmc 6/m 2/m 2/m

I/A.13-30 Ruthenium (Ru,Ir,Os) P 6₃/mmc 6/m 2/m 2/m

I/A.13-40 Rutheniridosmine (Ir,Os,Ru) P 6₃/mmc 6/m 2/m 2/m

Other Ruthenium Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)

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Ruthenium

(Ru,Ir,Os)
Dana No: 1.2.2.2 Strunz No: I/A.13-30
Locality:

Notes: