Cuprorhodsite Mineral Data

Cuprorhodsite Mineral Data

General Cuprorhodsite Information

Chemical Formula:

CuRh2S4

Composition:

Molecular Weight = 397.62 gm

Copper 15.98 % Cu

Rhodium 51.76 % Rh

Sulfur 32.26 % S

______

100.00 %

Empirical Formula:

CuRh₂S₄

Environment:

In alluvial placers.

IMA Status:

Approved IMA 1985

Locality:

From undefined localities in the Aldan shield and Kamchatka, Far Eastern Region, USSR. Link to MinDat.org Location Data.

Name Origin:

For the chemical composition.

Synonym:

ICSD 41900

PDF 17-644

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Cuprorhodsite Crystallography

Cell Dimensions:

a = 9.88, Z = 8; V = 964.43 Den(Calc)= 5.48

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m

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

By Intensity(I/I_o): 1.758(1), 3(1), 1.009(0.9),

Physical Properties of Cuprorhodsite

Cleavage:

None

Color:

Iron black, Black.

Density:

6.74

Diaphaniety:

Opaque

Hardness:

5-5.5 - Apatite-Knife Blade

Luster:

Metallic

Optical Properties of Cuprorhodsite

RL Color:

Gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Cuprorhodsite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
460 nm	35.60	39.50
480 nm	35.80	39.30
500 nm	36.40	39.30
520 nm	36.60	39.20
540 nm	36.70	39.20
560 nm	36.80	39.10
580 nm	36.90	39.10
600 nm	37.00	39.10
620 nm	37.00	39.00
640 nm	37.00	38.90
660 nm	36.90	38.80
680 nm	36.80	38.80
700 nm	36.70	38.70

**Calculated Relative Intensity Colors of Cuprorhodsite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	250%
R₁
R₂

Calculated Properties of Cuprorhodsite

Electron Density:

r_electron=5.04 gm/cc
note: r_{Cuprorhodsite}=5.48 gm/cc.

Fermion Index

Fermion Index = 0.00241
Boson Index = 0.99759

Photoelectric:

PE_{Cuprorhodsite}= 119.15 barns/electron
U=PE_{Cuprorhodsite} x r_electron= 601.03 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Cuprorhodsite is Not Radioactive

Cuprorhodsite Classification

Dana Class:

2.10.1.16 (2)Sulfides - Including Selenides and Tellurides

(2.10)where Am Bn Xp, with (m+n):p=3:4

(2.10.1)Linnaeite Group (Isometric: Fd3m)

2.10.1.1 Linnaeite CoCo2S4 F d3m 4/m 3 2/m

2.10.1.2 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m

2.10.1.3 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m

2.10.1.4 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m

2.10.1.5 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m

2.10.1.6 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m

2.10.1.7 Polydymite NiNi2S4 F d3m 4/m 3 2/m

2.10.1.8 Violarite FeNi2S4 F d3m 4/m 3 2/m

2.10.1.9 Trustedtite Ni3Se4 F d3m 4/m 3 2/m

2.10.1.10 Greigite FeFe2S4 F d3m 4/m 3 2/m

2.10.1.11 Daubreelite FeCr2S4 F d3m 4/m 3 2/m

2.10.1.12 Indite FeIn2S4 F d3m 4/m 3 2/m

2.10.1.13 Kalininite ZnCr2S4 F d3m 4/m 3 2/m

2.10.1.14 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m

2.10.1.15 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m

2.10.1.16 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m

2.10.1.17 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m

2.10.1.18 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m

2.10.1.19 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m

Strunz Class:

II/D.02-20 II - Sulfides and sulphosalts

II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold

II/D.02 - Dayingite - Xingzhongite series

II/D.02-10 Dayingite? CuCoPtS4 F m3m 4/m 3 2/m

II/D.02-20 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m

II/D.02-30 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m

II/D.02-40 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m

II/D.02-45 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m

II/D.02-50 Xingzhongite (Pb,Cu,Fe)(Ir,Pt,Rh)2S4 F d3m 4/m 3 2/m

Other Cuprorhodsite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Cuprorhodsite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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

Cuprorhodsite

CuRh2S4
Dana No: 2.10.1.16 Strunz No: II/D.02-20
Locality:

Notes: