Palladodymite Mineral Data (original) (raw)

General Palladodymite Information

Help on Chemical Formula: Chemical Formula:

(Pd,Rh)2As

Help on Composition: Composition:

Molecular Weight = 284.77 gm

Arsenic 26.31 % As

Palladium 42.98 % Pd

Rhodium 30.72 % Rh

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Pd1.15Rh0.85As

Help on Environment: Environment:

Platinum placers derived from ultra-basic rocks. Inclusions in native ruthenium.

Help on IMA Status: IMA Status:

Approved IMA 1999 (Dana # Added)

Help on Locality: Locality:

Unnamed placer deposit in the upper Miass River, South Urals, Russia. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

From (pallad)ium and the Greek for twin as it is the palladium-dominat analogue of rhodarsenide.

Help on Synonym: Synonym:

IMA1997-028

Palladodymite Image

Click Here for Larger Palladodymite Image in a New Browser Window Images:

Click Here for Larger Palladodymite Image Palladodymite Hongshiite Ruthenium Comments: Palladodymite (light gray, in two small grains), hongshiite (pale creamy grayish, tarnished brownish) in massive ruthenium. Polished section (from microprobe analysis) in reflected light. Location: Miass River, Zlatoust, Ilmen Mts, Chelyabinsk Oblast', Urals Region, Russia.Scale: Picture size 0.09 mm. © Thomas Witzke / Abraxas-Verlag

Palladodymite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =1.5153:1:1.882

Help on Cell Dimensions: Cell Dimensions:

a = 5.91, b = 3.9, c = 7.34, Z = 4; V = 169.18 Den(Calc)= 11.18

Help on Crystal System: Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.43(1), 2.24(0.5), 1.838(0.3),2.06(0.1),

Physical Properties of Palladodymite

Help on Cleavage: Cleavage:

None

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Help on Habit: Habit:

Inclusions - Generally found as inclusions in other minerals.

Help on Habit: Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Help on Luster: Luster:

Metallic

Optical Properties of Palladodymite

Help on RL Anisotrophism: RL Anisotrophism:

Distinct, from bluish gray to reddish brown.

Help on RL Color: RL Color:

Brownish gray with bluish tint.

Help on Reflectivity Reflectivity

Standardized Intensity (100%) Reflection Spectra of Palladodymite in Air

λ R1 R 2 ∑ R1(λ) ∑ R2(λ)
480 nm 51.60 45.80
560 nm 54.80 46.90
580 nm 56.20 48.00
660 nm 59.10 50.20

Calculated Relative Intensity Colors of Palladodymite in Air

RelativeIntensity 0% 30% 60% 90% 100% 120% 150% 180% 200%
R1
R2

Calculated Properties of Palladodymite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=9.75 gm/cc
note: Specific Gravity of Palladodymite =11.2 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.09
Boson Index = 0.91

Help on Photoelectric: Photoelectric:

PEPalladodymite = 191.48 barns/electron
U=PEPalladodymite x rElectron Density=1,866.60 barns/cc.

Help on Radioactivity: Radioactivity:

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

Palladodymite Classification

Help on Dana Class: Dana Class:

02.04.19.02 (02)Sulfides - Including Selenides and Tellurides

(02.04)where Am Bn Xp, with (m+n):p=2:1

(02.04.19)Dana Group

02.04.19.01 Rhodarsenide! (Rh,Pd)2As P nma or Pn2 Ortho

02.04.19.02 Palladodymite! (Pd,Rh)2As P nma 2/m 2/m 2/m

Help on Strunz Class: Strunz Class:

02.AC.25c 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.25c Palladodymite! (Pd,Rh)2As P nma 2/m 2/m 2/m

Other Palladodymite Information

Help on References: References:

NAME( MinRec, Vol 31, No 4) PHYS. PROP.(MinRec, Vol 31, No 4) OPTIC PROP.(AmMin, v 85, p 876)

Help on See Also: See Also:

Links to other databases for Palladodymite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

Search for Palladodymite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Palladodymite :

A Bijoux Google Search for Palladodymite
Adam's Minerals Google Search for Palladodymite
Cape Minerals Google Search for Palladodymite
Dakota Matrix Minerals Google Search for Palladodymite
Excalibur Mineral Corp. Google Search for Palladodymite
Exceptional Minerals Google Search for Palladodymite
John Betts Fine Minerals Search for Palladodymite
McDougall Minerals Google Search for Palladodymite
Mineral News Website Link
Rock and Mineral Shows Google Search for Palladodymite
Weinrich Minerals, Inc. Google Search for Palladodymite

Ask about Palladodymite 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 Espa�ol

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

Palladodymite

(Pd,Rh)2As
Dana No: 02.04.19.02 Strunz No: 02.AC.25c
Locality:

Notes: