Nickelphosphide Mineral Data

Nickelphosphide Mineral Data

General Nickelphosphide Information

Chemical Formula:

(Ni,Fe)3P

Composition:

Molecular Weight = 203.35 gm

Iron 35.70 % Fe

Nickel 49.07 % Ni

Phosphorus 15.23 % P

______

100.00 %

Empirical Formula:

Ni_1.7Fe⁰⁺_1.3P

Environment:

The nickel-dominant analog of schreibersite.

IMA Status:

Approved IMA 1998 (Dana # Added)

Locality:

Found in the Butler iron meteorite, Bates County, Missouri, U.S.A., which fell in 1874, and a number of other iron meteorites. Link to MinDat.org Location Data.

Name Origin:

The name reflects its composition.

Synonym:

ICSD 43396

IMA1998-023

PDF 51-1367

Nickelphosphide Image

Images:

Click Here for Larger Nickelphosphide Image

Nickelphosphide Kamacite

Comments: Small inclusion of nickelphosphide in massive kamacite.
Location: Kenton County meteorite, Kenton Co., Kentucky, USA. Scale: Picture size 0.09 mm.
© Thomas Witzke / Abraxas-Verlag

Nickelphosphide Crystallography

Axial Ratios:

a:c = 1:0.48898

Cell Dimensions:

a = 8.99, c = 4.396, Z = 6; V = 355.29 Den(Calc)= 5.70

Crystal System:

Tetragonal - DisphenoidalH-M Symbol (4) Space Group: I 4

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

By Intensity(I/I_o): 2.17(1), 1.995(0.7), 1.955(0.7),2.08(0.5), 2.13(0.5), 2.01(0.2), 2.48(0.2),

Physical Properties of Nickelphosphide

Cleavage:

None

Color:

Pinkish white, Yellowish white.

Diaphaniety:

Opaque

Fracture:

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

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

6.5-7 - Pyrite-Quartz

Luster:

Metallic

Optical Properties of Nickelphosphide

RL Anisotrophism:

None in air, weak in oil, yellowish-pinkish.

RL Bireflectance:

None.

RL Color:

White witha pink-yellow tint.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Nickelphosphide in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
480 nm	44.60	43.00
560 nm	48.30	46.80
580 nm	49.10	47.60
660 nm	52.50	51.30

**Calculated Relative Intensity Colors of Nickelphosphide in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%
R₁
R₂

Calculated Properties of Nickelphosphide

Electron Density:

r_electron=5.40 gm/cc
note: r_{Nickelphosphide}=5.70 gm/cc.

Fermion Index

Fermion Index = 0.01311
Boson Index = 0.98689

Photoelectric:

PE_{Nickelphosphide}= 31.56 barns/electron
U=PE_{Nickelphosphide} x r_electron= 170.55 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Nickelphosphide is Not Radioactive

Nickelphosphide Classification

Dana Class:

1.1.21.3 (1)Native Elements

(1.1)with metallic elements other than the platinum group

(1.1.21)Dana Group

1.1.21.1 Barringerite (Fe,Ni)2P P 62m 6 m2

1.1.21.2 Schreibersite (Fe,Ni)3P I 4 4

1.1.21.3 Nickelphosphide ! (Ni,Fe)3P I 4 4

1.1.21.4 Allabogdanite! (Fe,Ni)2P P nma 2/m 2/m 2/m

Strunz Class:

I/A.11-30 I - Elements

I/A - Metallic and intermetallic compounds, Carbides, Nitrides, Phosphides and Silicides

I/A.11 - Barringerite-Schreibersite series

I/A.11-05 Florenskyite! (Fe,Ni)TiP P nma 2/m 2/m 2/m

I/A.11-10 Barringerite (Fe,Ni)2P P 62m 6 m2

I/A.11-20 Schreibersite (Fe,Ni)3P I 4 4

I/A.11-30 Nickelphosphide (Ni,Fe)3P I 4 4

Other Nickelphosphide Information

References:

NAME( CanMin, 8/99) PHYS. PROP.(MinRec, Vol 31, No 4) OPTIC PROP.(AmMin, v 85, p 875)

See Also:

Links to other databases for Nickelphosphide :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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Nickelphosphide

(Ni,Fe)3P
Dana No: 1.1.21.3 Strunz No: I/A.11-30
Locality:

Notes: