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Schreibersite

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Karl Franz Anton von Schreibers
Formula:
(Fe,Ni,Cr)3P
System:
Tetragonal
Colour:
Silver-white to ...
Lustre:
Metallic
Hardness:
6½ - 7
Name:
Named after Karl Franz Anton von Schreibers (1775-1852) of Vienna, Austria.
Recently suggested by Pasek (2016) as a potentially important prebiotic mineral of the early Earth, possibly standing for a reactive source of phosphorus and a precursor to some phosphorylated molecules. The mineral is estimated to stand for 1-10% of the total crustal phosphorus during the Hadean.


Classification of Schreibersite

Approved, 'Grandfathered' (first described prior to 1959)
1.BD.05

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
B : Metallic Carbides, Silicides, Nitrides and Phosphides
D : Phosphides
Dana 7th ed.:
1.1.31.2
1.1.21.2

1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group
2.14

2 : Carbides, Nitrides, Silicides and Phosphides

Physical Properties of Schreibersite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Silver-white to tin-white, tarnishes to brass yellow or brown
Hardness (Mohs):
6½ - 7
Tenacity:
Very brittle
Cleavage:
Perfect
Perfect on {001}
imperfect on {010} or {110}
Density:
7.0 - 7.3 g/cm3 (Measured)    7.28(16) g/cm3 (Calculated)

Optical Data of Schreibersite

Type:
Uniaxial

Chemical Properties of Schreibersite

IMA Formula:
(Fe,Ni,Cr)3P
Elements listed in formula:
Common Impurities:
Cr

Crystallography of Schreibersite

Crystal System:
Tetragonal
Class (H-M):
4 - Disphenoidal
Space Group:
I4
Cell Parameters:
a = 9.05 Å, c = 4.47 Å
Ratio:
a:c = 1 : 0.494
Unit Cell Volume:
V 366.10 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Rarely in crystals, hoppered, plates, tablets, rods or needles.

Occurrences of Schreibersite

Type Occurrence of Schreibersite

Relationship of Schreibersite to other Species

Common Associates:
1.BD.ZuktamruriteFeP2
1.BD.05NickelphosphideNi3P
1.BD.10Barringerite(Fe,Ni)2P
1.BD.10MonipiteMoNiP
1.BD.15FlorenskyiteFeTiP
1.BD.15Allabogdanite(Fe,Ni)2P
1.BD.15AndreyivanoviteFeCrP
1.BD.20Melliniite(Ni,Fe)4P
2.1MoissaniteSiC
2.2SinoiteSi2N2O
2.3OsborniteTiN
2.4TongbaiteCr3C2
2.5CarlsbergiteCrN
2.6SiderazotFeNx (x=0.25-0.5)
2.7GupeiiteFe3Si
2.8XifengiteFe5Si3
2.9Khamrabaevite(Ti,V,Fe)C
2.10Haxonite(Fe,Ni)23C6
2.11CoheniteFe3C
2.12Roaldite(Fe,Ni)4N
2.13SuessiteFe3Si
2.15Barringerite(Fe,Ni)2P
2.16Perryite(Ni,Fe)8(Si,P)3
1.1.31.1Barringerite(Fe,Ni)2P
1.1.31.3NickelphosphideNi3P
1.1.31.4Melliniite(Ni,Fe)4P

Other Names for Schreibersite

Other Information

Other Information:
Strongly magnetic
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Schreibersite in petrology

Accessory component of (items highlighted in red)

References for Schreibersite

Reference List:
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume I: 124-126.

Geochemica et Cosmochimica Acta: 28: 971-980.

Geochemica et Cosmochimica Acta: 29: 513-534.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1982): 111: 685.

Skála, R. and Císařová, I. (2005) Crystal structure of meteoritic schreibersites: determination of absolute structure: Physicas and Chemistry of Minerals: 31: 721-732.

Pasek, M.A. (2016): Schreibersite on the early earth: scenarios for prebiotic phosphorylation. Geoscience Frontiers: 7: (in press); http://forum.amiminerals.it/viewtopic.php?f=5&t=12877 (2016)

Internet Links for Schreibersite

mindat.org URL:
https://www.mindat.org/min-3582.html
Please feel free to link to this page.

Localities for Schreibersite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Mineral and/or Locality  
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