Naldretteite Mineral Data

General Naldretteite Information

Chemical Formula:

Pd2Sb

Composition:

Molecular Weight = 333.37 gm

Iron 0.12 % Fe

Antimony 35.86 % Sb

Arsenic 0.31 % As

Palladium 63.69 % Pd

Sulfur 0.02 % S

______

100.00 %

Empirical Formula:

Pd_1.99Fe²⁺_0.007Sb_0.98As_0.01S_0.002

Environment:

In the contact zone that separates massive and disseminated sulfide mineralization.

IMA Status:

Approved IMA 2004 (Dana # Added)

Locality:

Discovered in drill core from the Mesamax Northwest deposit, Cape Smith fold belt, Ungava region, Canada. Link to MinDat.org Location Data.

Name Origin:

Named for Professor Anthony J. Naldrett (b. 1933), University of Toronto and past President of both the Mineralogical Association of Canada and the International Mineralogical Assoc iation.

Synonym:

IMA2004-007

Naldretteite Crystallography

Axial Ratios:

a:b:c =0.2224:1:0.3962

Cell Dimensions:

a = 3.906, b = 17.5551, c = 6.957, Z = 8; V = 477.04 Den(Calc)= 9.28

Crystal System:

Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C mc2₁

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

By Intensity(I/I_o): 2.2454(1)(132 ), 0.8584(0.56)(1,17,4 ), 2.0567(0.52)(043 ),0.8409(0.51)(118 ), 1.2122(0.5)(204 ), 1.2842(0.42)(115 ), 2.0009(0.4)(152 ), 1.3674(0.35)(193 ), 2.3029(0.35)(151 ),

Physical Properties of Naldretteite

Cleavage:

None

Color:

Creamy white.

Diaphaneity:

Opaque

Fracture:

Malleable - Deforms rather than breaking apart with a hammer.

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Hardness:

4-5 - Fluorite-Apatite

Luster:

Metallic

Optical Properties of Naldretteite

RL Anisotrophism:

Distinct in shades of deep bright blue, lemon-buff, and mauve to pale pink.

RL Bireflectance:

Weak.

RL Color:

Bright creamy white.

RL Pleochroism:

None.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Naldretteite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	49.00	50.90
546 nm	53.20	55.10
589 nm	55.40	57.50
650 nm	58.50	60.10

**Standardized Intensity (100%) Reflection Spectra of Naldretteite in Oil**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	35.90	37.60
546 nm	40.30	42.10
589 nm	42.50	44.30
650 nm	45.40	47.20

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

**Calculated Relative Intensity Colors of Naldretteite in Oil**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	250%
R₁
R₂

Calculated Properties of Naldretteite

Electron Density:

Bulk Density (Electron Density)=7.94 gm/cc
note: Specific Gravity of Naldretteite =9.28 gm/cc.

Fermion Index:

Fermion Index = 0.14
Boson Index = 0.86

Photoelectric:

PE_Naldretteite= 279.42 barns/electron
U=PE_Naldretteite x rElectron Density=2,217.20 barns/cc.

Radioactivity:

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

Naldretteite Classification

Dana Class:

02.04.22.01 (02)Sulfides - Including Selenides and Tellurides

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

(02.04.22)Dana Group

02.04.22.01 Naldretteite! Pd2Sb C mc2₁ 2/m 2/m 2/m

Strunz Class:

02.AC.25d 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.25d Naldretteite! Pd2Sb C mc2₁ 2/m 2/m 2/m

Other Naldretteite Information

References:

NAME( AmMin, v90, p1146) PHYS. PROP.(AmMin, v90, p1146) OPTIC PROP.(AmMin, v90, p1146)

See Also:

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

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

Naldretteite

Pd2Sb
Dana No: 02.04.22.01 Strunz No: 02.AC.25d
Locality:

Notes:

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