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.

Name Pronunciation:

Isomertieite + Pronunciation

Synonym:

Guanglinite

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),

Crystal Structure:

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Shi N , Ma Z , Zhang N , Ding X , Kexue Tongbao , 23 (1978) p.499-501, Crystal structure of isomertieite (fengluanite)

Physical Properties of Isomertieite

Cleavage:

{???} Perfect

Color:

Silver white.

Density:

10.33

Diaphaneity:

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	42.80
420 nm	43.20
440 nm	44.05
460 nm	45.50
470 nm	46.40
480 nm	47.30
500 nm	49.40
520 nm	51.50
540 nm	53.50
546 nm	54.00
560 nm	54.95
580 nm	56.20
589 nm	56.80
600 nm	57.35
620 nm	58.40
640 nm	59.20
650 nm	59.45
660 nm	59.70
680 nm	60.20
700 nm	60.70

**Standardized Intensity (100%) Reflection Spectra of Isomertieite in Oil**
λ	R	∑ R(λ)
400 nm	29.40
420 nm	30.00
440 nm	31.00
460 nm	32.40
470 nm	33.30
480 nm	34.30
500 nm	36.40
520 nm	38.50
540 nm	40.50
546 nm	40.90
560 nm	42.10
580 nm	43.30
589 nm	43.95
600 nm	44.55
620 nm	45.65
640 nm	46.40
650 nm	46.65
660 nm	47.00
680 nm	47.45
700 nm	47.90

**Calculated Relative Intensity Colors of Isomertieite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	200%
R

**Calculated Relative Intensity Colors of Isomertieite in Oil**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	270%	280%
R

Calculated Properties of Isomertieite

Electron Density:

Bulk Density (Electron Density)=9.66 gm/cc
note: Specific Gravity of Isomertieite =11.2 gm/cc.

Fermion Index:

Fermion Index = 0.16
Boson Index = 0.84

Photoelectric:

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

Radioactivity:

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

Isomertieite Classification

Dana Class:

02.16.02.01 (02)Sulfides - Including Selenides and Tellurides

(02.16)with miscellaneous formulae

(02.16.02)Dana Group

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

02.16.02.02 Miessiite! Pd11Te2Se2 F d3m 2/m 3

Strunz Class:

02.AC.15a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.A - Simple Sulfides, Selenides, etc

02.AC -Alloys of metalloids with PGE

02.AC.15a Isomertieite Pd11Sb2As2 F d3m 4/m 3 2/m

02.AC.15a Miessiite! Pd11Te2Se2 F d3m 2/m 3

Other Isomertieite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(CanMin, v45:1221)

See Also:

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

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Isomertieite

Pd11Sb2As2
Dana No: 02.16.02.01 Strunz No: 02.AC.15a
Locality:

Notes: