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Schreibersite

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Karl Franz Anton von Schreibers
Formula:
(Fe,Ni)3P
Colour:
Silver-white to tin-white, tarnishes to brass yellow or brown
Lustre:
Metallic
Hardness:
6½ - 7
Specific Gravity:
7.0 - 7.3
Crystal System:
Tetragonal
Name:
Named in 1847 by Wilhelm Karl Ritter von Haidinger in honor of Karl Franz Anton von Schreibers (15 August 1775 – 21 May 1852) of Bratislava, Slovakia (which at the time was known as Pressburg, Hungary, Habsburg Empire).
He earned his medical doctorate from Vienna in 1798 but also studied botany, mineralogy, and zoology at the University. For a brief period of time, he assisted his uncle, Joseph Ludwig von Schreibers, with his medical practice in Vienna. As a young man, he also toured museums throughout Europe. In 1802 he was an assistant of natural history and agricultural sciences at the University of Vienna. In 1806 he was appointed the director of the Viennese natural history collections (Naturalienkabinette), which became his life's work.
Schreibers was involved with all aspects of natural sciences, and he embarked upon a total organizational overhaul of the museum's natural history collections. During his time as director, the size of the museum's library grew from a few scientific books to a collection of over 30,000 volumes. Here, he stored the results of his personal research work, as well as a collection of meteorites — Schreibers' main interest of study. On 31 October 1848, some parts of the collections of the museum were destroyed by fire during the course of the bombardment of Viennese revolutionaries by the Austrian Imperial Army. Schreibers was devastated by the loss and retired soon afterward. Fortunately, his collection of meteorites was saved from destruction. [Source: Wikipedia]
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
Transparency:
Opaque
Colour:
Silver-white to tin-white, tarnishes to brass yellow or brown
Hardness:
6½ - 7 on Mohs scale
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

Formula:
(Fe,Ni)3P
IMA Formula:
(Fe,Ni,Cr)3P
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 V:
366.10 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Rarely in crystals, hoppered, plates, tablets, rods or needles.

Type Occurrence of Schreibersite

Synonyms of Schreibersite

Other Language Names for Schreibersite

Common Associates

Associated Minerals Based on Photo Data:
Kamacite13 photos of Schreibersite associated with Kamacite on mindat.org.
Troilite8 photos of Schreibersite associated with Troilite on mindat.org.
Taenite6 photos of Schreibersite associated with Taenite on mindat.org.
Barringerite4 photos of Schreibersite associated with Barringerite on mindat.org.
Brezinaite4 photos of Schreibersite associated with Brezinaite on mindat.org.
Forsterite3 photos of Schreibersite associated with Forsterite on mindat.org.
Wüstite2 photos of Schreibersite associated with Wüstite on mindat.org.
Olivine2 photos of Schreibersite associated with Olivine on mindat.org.
Iron1 photo of Schreibersite associated with Iron on mindat.org.
Allabogdanite1 photo of Schreibersite associated with Allabogdanite on mindat.org.

Related Minerals - Nickel-Strunz Grouping

1.BD.ZuktamruriteFeP2
1.BD.05Nickelphosphide(Ni,Fe)3P
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

Related Minerals - Hey's Chemical Index of Minerals Grouping

2.1MoissaniteSiC
2.2SinoiteSi2N2O
2.3OsborniteTiN
2.4TongbaiteCr3C2
2.5CarlsbergiteCrN
2.6SiderazotFe5N2
2.7GupeiiteFe3Si
2.8XifengiteFe5Si3
2.9Khamrabaevite(Ti,V,Fe)C
2.10Haxonite(Fe,Ni)23C6
2.11CoheniteFe3C
2.12Roaldite(Fe,Ni)4N
2.13Suessite(Fe,Ni)3Si
2.15Barringerite(Fe,Ni)2P
2.16Perryite(Ni,Fe)5(Si,P)2

Related Minerals - Dana Grouping (8th Ed.)

1.1.21.1Barringerite(Fe,Ni)2P

Other Information

Notes:
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:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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: Physics 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
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Localities for Schreibersite

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