Isomertieite Mineral Data

Isomertieite Mineral Data +

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General Isomertieite Information

Chemical Formula:

Pd11Sb2As2

Composition:

Molecular Weight = 1,563.96 gm

Antimony 15.57 % Sb

Arsenic 9.58 % As

Palladium 74.85 % Pd

______

100.00 %

Empirical Formula:

Pd₁₁Sb₂As₂

Environment:

In heavy-metal concentrates from Precambrian iron-precious metal deposits.

IMA Status:

Approved IMA 1974

Locality:

From Itabira, Minas Gerais, Brazil. Link to MinDat.org Location Data.

Name Origin:

For its structural and compositional relationship to mertieite-I.

Isomertieite Image

Images:

Click Here for Larger Isomertieite Image

Isomertieite Arsenopalladinite Gold Bornite

Comments: Light grayish grain of intimately intergrown isomertieite and arsenopalladinite (in the center of the picture), with pale yellow gold and brownish to violet bornite. Polished section (from microprobe analysis) in reflected light.
Location: Noril'sk, Putoran Mts, Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia. Scale: Picture size 0.1 mm.
© Thomas Witzke / Abraxas-Verlag

Isomertieite Crystallography

Cell Dimensions:

a = 12.283, Z = 8; V = 1,853.16 Den(Calc)= 11.21

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): 2.167(1), 2.356(0.9), 0.86(0.8),

Physical Properties of Isomertieite

Cleavage:

[???] Perfect

Color:

Silver white.

Density:

10.33

Diaphaniety:

Opaque

Hardness:

5.5 - Knife Blade

Luster:

Metallic

Optical Properties of Isomertieite

RL Anisotrophism:

Weak in shades of dull brown.

RL Color:

Pale yellow white.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Isomertieite in Air**
λ	R	∑ R(λ)
400 nm	43.20
420 nm	44.10
440 nm	45.50
460 nm	47.20
480 nm	49.20
500 nm	51.20
520 nm	53.10
540 nm	54.80
560 nm	56.20
580 nm	57.40
600 nm	58.60
620 nm	59.40
640 nm	60.10
660 nm	60.50
680 nm	60.80
700 nm	61.10

**Calculated Relative Intensity Colors of Isomertieite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%	180%	190%
R

Calculated Properties of Isomertieite

Electron Density:

r_electron=9.66 gm/cc
note: r_Isomertieite=11.2 gm/cc.

Fermion Index

Fermion Index = 0.16713
Boson Index = 0.83287

Photoelectric:

PE_Isomertieite= 241.98 barns/electron
U=PE_Isomertieite x r_electron=2,337.98 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Isomertieite is Not Radioactive

Isomertieite Classification

Dana Class:

2.16.2.1 (2)Sulfides - Including Selenides and Tellurides

(2.16)with miscellaneous formulae

(2.16.2)Dana Group

2.16.2.1 Isomertieite Pd11Sb2As2 F d3m 4/m 3 2/m

Strunz Class:

II/A.05-50 II - Sulfides and sulphosalts

II/A - Alloys and alloylike compounds, with metals of the Platinum series, (Palladium)

II/A.05 - Atheneite - Genkinite series

II/A.05-10 Atheneite (Pd,Hg)3As P 6/mmm 6/m 2/m 2/m

II/A.05-20 Vincentite (Pd,Pt)3(As,Sb,Te) Unk Mono

II/A.05-30 Stillwaterite Pd8As3 P 3 3

II/A.05-40 Arsenopalladinite Pd8(As,Sb)3 P1 1

II/A.05-50 Isomertieite Pd11Sb2As2 F d3m 4/m 3 2/m

II/A.05-60 Mertieite-I Pd11(Sb,As)4 Unk Hex

II/A.05-70 Mertieite-II Pd8(Sb,As)3 R 3c 3m

II/A.05-80 Stibiopalladinite Pd5Sb2 P 6₃mc 6mm

II/A.05-90 Palladoarsenide Pd2As P 2/m 2/m

II/A.05-100 Palladobismutharsenide Pd2(As,Bi) Pmcn,P 2₁cn Ortho

II/A.05-102 Palladodymite! (Pd,Rh)2As P nma 2/m 2/m 2/m

II/A.05-105 Rhodarsenide! (Rh,Pd)2As P nma or Pn2 Ortho

II/A.05-110 Majakite PdNiAs Unk Hex

II/A.05-112 Menshikovite! Pd3Ni2As3 P 6₃/m,P 6₃, or P 6₃22 Hex

II/A.05-115 Polkanovite! Rh12As7 P 6₃m 6/m

II/A.05-120 Genkinite (Pt,Pd)4Sb3 P 4₁2₁2 4 2 2

Other Isomertieite Information

References:

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

See Also:

Links to other databases for Isomertieite :
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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Isomertieite

Pd11Sb2As2
Dana No: 2.16.2.1 Strunz No: II/A.05-50
Locality:

Notes: