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Ruarsite (Ruarsit)

Collectors Summary

Color grauweiß
Streak color gräulich-schwarz
Lustre Metallglanz
Hardness (Mohs) 6.5
Solubility - HCl
Crystal System monoklin, P21/c

Chemism

Chemical formula

RuAsS

Chemical composition

Arsen, Ruthenium, Schwefel

Unit weight: 208.059102 u; Number of atoms in the formula: 3

Info

Empirical formula:

RuAsS

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

15.41

1

33.33

32.0655000

32.0655000
Arsenic

As

36.01

1

33.33

74.9216020

74.9216020
Ruthenium

Ru

48.58

1

33.33

101.0720000

101.0720000

Strunz 9th edition incl. updates

2.EB.20

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
E: Metallsulfide mit M:S >= 1:2
B: M:S = 1:2, mit Fe, Co, Ni, PGE, usw.
20:Arsenopyrit-Gruppe

Lapis Classification

II/D.22-040

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
D: Sulfide mit Metall : S,Se,Te < 1:1
22: Arsenopyrit-Gruppe

Classification by Hölzel

2.EB.750

2: SULFIDES
E: Me/S=1/2 (also < 1/2)
B: With Fe,Co,Ni,PGE Pyrite, Marcasite Family
7: Arsenopyrite-Group

IMA status

Ohne Prüfung durch die CNMNC veröffentlicht, inzwischen anerkannt nach IMA/CNMNC List of Mineral Names (2009)

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Arsenopyrite Group

Optical Properties

Color

grauweiß

Streak color

gräulich-schwarz

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Reflectivity: (Lambda nm) ↓, ↑, Ø

(480) 43.40, , 43.40
(546) 44.10, , 44.10
(589) 43.80, , 43.80
(656) 45.10, , 45.10
Reflection chart Ruarsite

Reflectivity Ø

44.1

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

5.931

Cell parameters b (Å)

5.915

Cell parameters c (Å)

6.003

Cell parameters a/b or c/a

1.003

Cell parameters c/b

1.015

Cell parameters α

90°

Cell parameters β

112.45

Cell parameters γ

90°

Z

4

Volumne (ų)

194.636

X-Ray Powder Diffraction

3.79(50),
2.77(100),
2.74(70),
1.890(70),
1.870(90),
1.695(90),
1.660(60),
1.580(50)
XRD chart Ruarsite

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

Physical Properties

Hardness (Mohs)

6.5

VHN (Hardness Vickers)

1006 (20g), 734 - 893 (50g)

Density (g/cm³)

7.08 (berechnet)

7.1 ( ρ calc. Mineralienatlas )

Tenacity

spröde

Instability

- HCl

(Co-)Type locality

(Co-)Type locality

China/Tibet (Xizang AR)/Nagchu (Naqu), Präfektur/Amdo (Anduo), Kreis/Anduo Cr-Lagerstätte

Preface

Name from

Für die chemische Zusammensetzung RUthenium, ARsen und Schwefel.

Author (Name, Year)

Yu & Chou, 1979

References

Chinese Science Bulletin 24 (1979), 310

IMA group assignments

Other languages

German

Ruarsit

Spanish

Ruarsita

French

Ruarsite

English

Ruarsite

Russian

Руарсит

Simplified Chinese

硫砷钌矿

CNMNC symbol

Symbol

Rua

Locations with GPS information