Arsenopalladinite Mineral Data

Arsenopalladinite Mineral Data +

[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop

General Arsenopalladinite Information

Chemical Formula:

Pd8(As,Sb)3

Composition:

Molecular Weight = 1,099.54 gm

Antimony 5.54 % Sb

Arsenic 17.03 % As

Palladium 77.43 % Pd

______

100.00 %

Empirical Formula:

Pd₈As_2.5Sb_0.5

Environment:

Alluvial placers and ultra-basic intrusions.

IMA Status:

Approved IMA 1974

Locality:

Itabira, Minas Gerias, Brazil. Link to MinDat.org Location Data.

Name Origin:

Named for its composition.

Arsenopalladinite Image

Images:

Click Here for Larger Arsenopalladinite Image

Arsenopalladinite Isomertieite 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

Images:

Arsenopalladinite

Comments: Arsenopalladinite micro crystal.
Location: Itabira, Minas Gerais, Brazil. Scale: Not Given.
© Jeff Weissman / Photographic Guide to Mineral Species

Arsenopalladinite Crystallography

Axial Ratios:

a:b:c =0.5326:1:0.5268

Cell Dimensions:

a = 7.43, b = 13.95, c = 7.35, Z = 4; alpha = 92.88°, beta = 119.5°, gamma = 87.85° V = 661.75 Den(Calc)= 11.04

Crystal System:

Triclinic - PedialH-M Symbol (1) Space Group: P1

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

By Intensity(I/I_o): 2.13(1), 2.34(0.6), 1.41(0.4),

Physical Properties of Arsenopalladinite

Color:

Silver white.

Density:

10.4

Diaphaniety:

Opaque

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Habit:

Nuggets - Irregular lumps produced by stream transport of malleable metals.

Hardness:

4 - Fluorite

Luster:

Metallic

Optical Properties of Arsenopalladinite

RL Anisotrophism:

Strong, red and golden brown to blue-gray in air, khaki-brown to blue gray in oil.

RL Color:

White with yellowish creamy tint.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Arsenopalladinite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	43.90	44.50
420 nm	44.70	45.80
440 nm	45.70	46.50
460 nm	46.80	47.80
480 nm	48.10	49.40
500 nm	49.40	50.80
520 nm	50.80	52.40
540 nm	52.10	53.90
560 nm	53.20	55.10
580 nm	54.40	56.40
600 nm	55.40	57.30
620 nm	56.40	58.10
640 nm	57.00	58.80
660 nm	57.70	59.20
680 nm	58.20	59.80
700 nm	58.80	60.00

**Calculated Relative Intensity Colors of Arsenopalladinite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%	180%	190%
R₁
R₂

Calculated Properties of Arsenopalladinite

Electron Density:

r_electron=9.56 gm/cc
note: r_{Arsenopalladinite}=11.0 gm/cc.

Fermion Index

Fermion Index = 0.17289
Boson Index = 0.82711

Photoelectric:

PE_{Arsenopalladinite}= 218.60 barns/electron
U=PE_{Arsenopalladinite} x r_electron=2,089.54 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Arsenopalladinite is Not Radioactive

Arsenopalladinite Classification

Dana Class:

2.16.5.1 (2)Sulfides - Including Selenides and Tellurides

(2.16)with miscellaneous formulae

(2.16.5)Dana Group

2.16.5.1 Arsenopalladinite Pd8(As,Sb)3 P1 1

Strunz Class:

II/A.05-40 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 Arsenopalladinite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Arsenopalladinite :
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

Search for Arsenopalladinite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Arsenopalladinite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Arsenopalladinite Mineral Data :

Ask about Arsenopalladinite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Arsenopalladinite

Pd8(As,Sb)3
Dana No: 2.16.5.1 Strunz No: II/A.05-40
Locality:

Notes: