Schreibersite Mineral Data

Schreibersite Mineral Data +

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General Schreibersite Information

Chemical Formula:

(Fe,Ni)3P

Composition:

Molecular Weight = 200.65 gm

Iron 62.63 % Fe

Nickel 21.94 % Ni

Phosphorus 15.44 % P

______

100.00 %

Empirical Formula:

Fe⁰⁺_2.25Ni_0.75P

IMA Status:

Valid Species (Pre-IMA) 1847

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 14241

PDF 19-617

Rhabdite

Schreibersite Image

Images:

Schreibersite

Comments: Golden metallic schreibersite cleavage fragment from type IIB octahedrite meteorite.
Location: Sau Luiao de Moreira Meteorite, Ponte de Lima, Minho, Viana do Castelo, Portugal. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Schreibersite Allabogdanite

Comments: Relict grain of allabogdanite crystal (ABG) surrounded by schreibersite rim (SCHR) in plessite matrix (PL). Black phase is a secondary Fe-Ni-hydroxide. Backscattered electron image. (AmMin, 87:1249).
Location: Onello iron meteorite (high-Ni ataxite) Onello River basin, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia. Scale: Scale bar 10 µ-m.
© American Mineralogist

Schreibersite Crystallography

Axial Ratios:

a:c = 1:0.49084

Cell Dimensions:

a = 9.013, c = 4.424, Z = 8; V = 359.38 Den(Calc)= 7.42

Crystal System:

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

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

By Intensity(I/I_o): 2.19(1), 1.972(0.7), 2.1(0.7),

Crystal Structure:

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Skala R , Cisarova I , Physics and Chemistry of Minerals , 31 (2005) p.721-732, Crystal structure of meteoritic schreibersites: determination of absolute structure, Sample: Acuna

View Additional jPOWD Structure files for Schreibersite
[1] [2] [3] [4] [5] [6] [7] [8]

Physical Properties of Schreibersite

Cleavage:

[001] Perfect, [010] Indistinct, [110] Indistinct

Color:

Bronze, Brown, Brass yellow, Silver white.

Density:

7 - 7.8, Average = 7.4

Diaphaniety:

Opaque

Fracture:

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

Hardness:

6.5-7 - Pyrite-Quartz

Luster:

Metallic

Streak:

dark gray

Calculated Properties of Schreibersite

Electron Density:

r_electron=6.99 gm/cc
note: r_{Schreibersite}=7.42 gm/cc.

Fermion Index

Fermion Index = 0.01575
Boson Index = 0.98425

Photoelectric:

PE_{Schreibersite}= 28.90 barns/electron
U=PE_{Schreibersite} x r_electron= 201.97 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Schreibersite is Not Radioactive

Schreibersite Classification

Dana Class:

1.1.21.2 (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.11-20 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 Schreibersite Information

References:

NAME( Athena) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Schreibersite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Schreibersite

(Fe,Ni)3P
Dana No: 1.1.21.2 Strunz No: I/A.11-20
Locality:

Notes: