Nielsenite Mineral Data

General Nielsenite Information

Chemical Formula:

PdCu3

Composition:

Molecular Weight = 295.63 gm

Iron 2.38 % Fe

Copper 67.35 % Cu

Palladium 30.27 % Pd

______

100.00 %

Empirical Formula:

Pd_0.84Cu_0.13Fe⁰⁺_0.12Cu₃

Environment:

Discovered in non-magnetic heavy concentrates from drill core taken from Pd5 level of the Skaergaard intrusion and in a bulk sample obtained by blasting at the toe of Forbindelses-g letscher,

IMA Status:

Approved IMA 2004 (Dana # Added)

Locality:

Skaergaard Intrusion, Greenland. Link to MinDat.org Location Data.

Name Origin:

Named for Troels F.D. Nielsen (b. 1950), a geologist with the Geological Survey of Denmark and Greenland.

Synonym:

IMA2004-046

Nielsenite Image

Images:

Nielsenite

Comments: BSE images of nielsenite (nls), skaergaardite (sk), chalcocite + bornite (cc + bn), bornite (bn) and chalcocite (cc) in non-magnetic ore concentrates..
Location: Skaergaard Intrusion, Greenland.. Scale: See Images.
© Canadian Mineralogist

Nielsenite Crystallography

Axial Ratios:

a:c = 1:6.90101

Cell Dimensions:

a = 3.7125, c = 25.62, Z = 4; V = 353.11 Den(Calc)= 5.56

Crystal System:

Tetragonal - Ditetragonal PyramidalH-M Symbol (4mm) Space Group: P 4mm

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

By Intensity(I/I_o): 2.138(1), 1.8604(0.7), 1.3049(0.6),3.657(0.6), 1.1188(0.55), 1.8337(0.4), 1.0655(0.3),

Crystal Structure:

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Okamura K , Journal of the Physical Society of Japan , 28 (1970) p.1005-1014, Lattice modulation in the long period ordered alloys studied by X-ray diffraction. III. Cu3Pd, Locality: synthetic, Note: Coordinates of Cu6 altered to reproduce reported bond lengths

Physical Properties of Nielsenite

Cleavage:

None

Color:

Steel gray.

Diaphaneity:

Opaque

Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Luster:

Metallic

Streak:

black

Optical Properties of Nielsenite

RL Anisotrophism:

None.

RL Bireflectance:

None.

RL Color:

Bright creamy white with no internal reflections.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Nielsenite in Air**
λ	R	∑ R(λ)
400 nm	53.20
420 nm	54.40
440 nm	55.60
460 nm	56.90
480 nm	58.30
500 nm	59.20
520 nm	59.90
540 nm	60.70
560 nm	61.30
580 nm	62.20
600 nm	63.60
620 nm	64.70
640 nm	66.00
660 nm	67.40
680 nm	68.50
700 nm	69.90

**Standardized Intensity (100%) Reflection Spectra of Nielsenite in Oil**
λ	R	∑ R(λ)
400 nm	42.70
420 nm	44.10
440 nm	45.20
460 nm	46.60
480 nm	48.10
500 nm	49.00
520 nm	50.00
540 nm	50.60
560 nm	51.40
580 nm	52.50
600 nm	53.60
620 nm	55.20
640 nm	56.70
660 nm	58.20
680 nm	60.10
700 nm	61.80

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

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

Calculated Properties of Nielsenite

Electron Density:

Bulk Density (Electron Density)=5.00 gm/cc
note: Specific Gravity of Nielsenite =5.56 gm/cc.

Fermion Index:

Fermion Index = 0.06
Boson Index = 0.94

Photoelectric:

PE_Nielsenite= 102.71 barns/electron
U=PE_Nielsenite x rElectron Density= 513.16 barns/cc.

Radioactivity:

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

Nielsenite Classification

Dana Class:

01.02.14.01 (01)Native Elements

(01.02)with platinum group metals and alloys

(01.02.14)Dana Group

01.02.14.01 Nielsenite! PdCu3 P 4mm 4mm

01.02.14.02 Bortnikovite! Pd4Cu3Zn P 4/mmm 4/m 2/m 2/m

Strunz Class:

01.AG.70 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)

01.A - Metals and Intermetallic Alloys

01.AG -PGE-metal alloys

01.AG.70 Nielsenite! PdCu3 P 4mm 4mm

Other Nielsenite Information

References:

NAME( CanMin, v43:709) PHYS. PROP.(CanMin, v43:709) OPTIC PROP.(CanMin, v43:709)

See Also:

Links to other databases for Nielsenite :
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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Ask about Nielsenite here :
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Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Nielsenite

PdCu3
Dana No: 01.02.14.01 Strunz No: 01.AG.70
Locality:

Notes: