Ferrorhodsite Mineral Data

Ferrorhodsite Mineral Data

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General Ferrorhodsite Information

Chemical Formula:

(Fe,Cu)(Rh,Ir,Pt)2S4

Composition:

Molecular Weight = 417.75 gm

Iron 7.62 % Fe

Copper 6.39 % Cu

Iridium 10.58 % Ir

Platinum 2.33 % Pt

Rhodium 42.37 % Rh

Sulfur 30.70 % S

______

100.00 %

Empirical Formula:

Fe²⁺_0.57Cu_0.42Rh_1.72Ir_0.23Pt_0.05S₄

Environment:

Found as inclusions in isoferroplatinum in dunnite. The iron dominant analog of cuprorodsite.

IMA Status:

Approved IMA 1996

Locality:

Gold-platinum placers in the Chadsky and Kondersky dunite massifs, Yakutia-Saha, Russia. Link to MinDat.org Location Data.

Name Origin:

For it's composition and relationship to cuprorhodsite.

Synonym:

IMA1996-047

Search for Ferrorhodsite Images

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Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Ferrorhodsite Crystallography

Cell Dimensions:

a = 9.89, Z = 8; V = 967.36 Den(Calc)= 5.74

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): 2.99(1), 1.75(0.9), 2.471(0.8),1.93(0.7), 1.009(0.3), 1.674(0.3),

Physical Properties of Ferrorhodsite

Cleavage:

None

Color:

Black.

Density:

5.71

Diaphaniety:

Opaque

Fracture:

Fragile - Crystals with a delicate and easily injured structure.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Habit:

Inclusions - Generally found as inclusions in other minerals.

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Metallic

Streak:

black

Optical Properties of Ferrorhodsite

RL Color:

Gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Ferrorhodsite in Air**
λ	R	∑ R(λ)
450 nm	40.90
480 nm	41.50
520 nm	41.90
560 nm	41.80
600 nm	41.80
640 nm	41.80
680 nm	41.70
720 nm	41.80

**Calculated Relative Intensity Colors of Ferrorhodsite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	220%
R

Calculated Properties of Ferrorhodsite

Electron Density:

r_electron=5.22 gm/cc
note: r_{Ferrorhodsite}=5.74 gm/cc.

Fermion Index

Fermion Index = 0.01181
Boson Index = 0.98819

Photoelectric:

PE_{Ferrorhodsite}= 275.65 barns/electron
U=PE_{Ferrorhodsite} x r_electron=1,439.36 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Ferrorhodsite is Not Radioactive

Ferrorhodsite Classification

Dana Class:

2.10.1.18 (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.02-45 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 Ferrorhodsite Information

References:

NAME( MinRec, V31, No. 2) PHYS. PROP.(MinRec, V 31, No. 2) OPTIC PROP.(AmMin, v 84, p 1685)

See Also:

Links to other databases for Ferrorhodsite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Ferrorhodsite

(Fe,Cu)(Rh,Ir,Pt)2S4
Dana No: 2.10.1.18 Strunz No: II/D.02-45
Locality:

Notes: