Rudashevskyite Mineral Data

General Rudashevskyite Information

Chemical Formula:

(Fe,Zn)S

Composition:

Molecular Weight = 91.85 gm

Manganese 2.39 % Mn

Zinc 24.92 % Zn

Iron 37.09 % Fe

Copper 0.69 % Cu

Sulfur 34.91 % S

______

100.00 %

Empirical Formula:

Fe²⁺_0.61Zn_0.35Mn²⁺_0.04Cu_0.01S

Environment:

Accessory phase in an enstatite chondrite, EH4. Fe-dominent member of Sphalerite group.

IMA Status:

Approved IMA 2005 (Dana # Added)

Locality:

Indarch meteorite, Shusha, Nagorno-Karabakh, Azerbaijan. Link to MinDat.org Location Data.

Name Origin:

Named for Nickolay S. Rudashevsky (1944-), St. Petersburg, Russia, for his contributions to study of ore minerals.

Synonym:

IMA2005-017

Rudashevskyite Image

Images:

Rudashevskyite

Comments: B&W reflected light image of rudashevskyite (Rud) attached to large schreibersite grain (Schr), associated with troilite (Tr), idiomorphic roedderite tablets (Roed), and clinoenstatite (Px) (AmMin, v93:903).
Location: Indarch meteorite, Shusha, Nagorno-Karabakh, Azerbaijan. Scale: See Image.
© American Mineralogist

Rudashevskyite Crystallography

Cell Dimensions:

a = 5.426, Z = 6; V = 159.75 Den(Calc)= 5.73

Crystal System:

Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: F43m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.13(1), 1.919(0.5), 1.634(0.4),1.045(0.3), 1.107(0.3), 1.246(0.3), 2.714(0.1),

Crystal Structure:

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Britvin S N , Bogdanova A N , Boldyreva M M , Aksenova G Y , American Mineralogist , 93 (2008) p.902-909, Rudashevskyite, the Fe-dominant analogue of sphalerite, a new mineral:, Description and crystal structure, Locality: Indarch meteorite, Sample: Domain 3

Physical Properties of Rudashevskyite

Cleavage:

Unknown, Unknown, Unknown

Color:

Black.

Diaphaneity:

Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Hardness:

4 - Fluorite

Luster:

Resinous - Metallic

Streak:

brownish black

Optical Properties of Rudashevskyite

RL Anisotrophism:

None.

RL Bireflectance:

Isotropic.

RL Color:

Gray with distinct brownish tints.

RL Pleochroism:

None.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Rudashevskyite in Air**
λ	R	∑ R(λ)
400 nm	19.50
420 nm	19.50
440 nm	19.50
460 nm	19.50
470 nm	19.60
480 nm	19.60
500 nm	19.80
520 nm	19.90
540 nm	20.20
546 nm	20.30
560 nm	20.50
580 nm	20.70
589 nm	20.80
600 nm	20.90
620 nm	20.90
640 nm	21.10
650 nm	21.10
660 nm	21.10
680 nm	21.10
700 nm	21.20

**Calculated Relative Intensity Colors of Rudashevskyite in Air**
Relative Intensity	0%	50%	100%	150%	200%	250%	300%	350%	400%	450%
R

Calculated Properties of Rudashevskyite

Electron Density:

Bulk Density (Electron Density)=5.45 gm/cc
note: Specific Gravity of Rudashevskyite =5.73 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Rudashevskyite}= 26.68 barns/electron
U=PE_{Rudashevskyite} x rElectron Density= 145.28 barns/cc.

Radioactivity:

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

Rudashevskyite Classification

Dana Class:

02.08.02.07 (02)Sulfides - Including Selenides and Tellurides

(02.08)where Am Bn Xp, with (m+n):p=1:1

(02.08.02)Sphalerite Group (Isometric: F4-3m)

02.08.02.01 Sphalerite (Zn,Fe)S F43m 4 3m

02.08.02.02 Stilleite ZnSe F43m 4 3m

02.08.02.03 Metacinnabar HgS F43m 4 3m

02.08.02.04 Tiemannite HgSe F43m 4 3m

02.08.02.05 Coloradoite HgTe F43m 4 3m

02.08.02.06 Hawleyite CdS F43m 4 3m

02.08.02.07 Rudashevskyite! (Fe,Zn)S F43m 4 3m

Strunz Class:

02.CB.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.C - Metal Sulfides, M:S = 1:1 (and similar)

02.CB -With Zn, Fe, Cu, Ag, Au, etc

02.CB.05a Hawleyite CdS F43m 4 3m

02.CB.05a Coloradoite HgTe F43m 4 3m

02.CB.05a Metacinnabar HgS F43m 4 3m

02.CB.05a Sphalerite (Zn,Fe)S F43m 4 3m

02.CB.05a Tiemannite HgSe F43m 4 3m

02.CB.05a Stilleite ZnSe F43m 4 3m

02.CB.05a Rudashevskyite! (Fe,Zn)S F43m 4 3m

Other Rudashevskyite Information

References:

NAME( AmMin, v93:902) PHYS. PROP.(AmMin, v93:902) OPTIC PROP.(AmMin, v93:902)

See Also:

Links to other databases for Rudashevskyite :
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

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Print or Cut-and-Paste your Rudashevskyite Specimen Label here :

Rudashevskyite

(Fe,Zn)S
Dana No: 02.08.02.07 Strunz No: 02.CB.05a
Locality:

Notes: